./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-15.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-15.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU --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 abe6fcc2bea9781e0ab07417eb8616a5b638529e720de8eddec3568cb8edc6ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:02:24,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:02:25,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:02:25,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:02:25,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:02:25,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:02:25,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:02:25,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:02:25,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:02:25,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:02:25,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:02:25,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:02:25,085 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:02:25,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:02:25,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:02:25,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:02:25,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:02:25,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:02:25,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:02:25,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:02:25,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:02:25,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:02:25,092 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:02:25,093 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:02:25,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:02:25,094 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:02:25,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:02:25,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:02:25,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:02:25,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:02:25,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:02:25,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:25,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:02:25,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:02:25,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:02:25,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:02:25,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:02:25,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:02:25,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:02:25,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:02:25,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:02:25,100 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_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abe6fcc2bea9781e0ab07417eb8616a5b638529e720de8eddec3568cb8edc6ea [2024-10-31 22:02:25,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:02:25,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:02:25,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:02:25,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:02:25,420 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:02:25,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-deagle/floating_read-15.i Unable to find full path for "g++" [2024-10-31 22:02:27,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:02:27,941 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:02:27,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/sv-benchmarks/c/pthread-deagle/floating_read-15.i [2024-10-31 22:02:27,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/data/6e8a366fa/3b45489f692745eebb7567bd9465bae2/FLAGaeb2915d1 [2024-10-31 22:02:28,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/data/6e8a366fa/3b45489f692745eebb7567bd9465bae2 [2024-10-31 22:02:28,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:02:28,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:02:28,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:28,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:02:28,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:02:28,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:28,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b4b66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28, skipping insertion in model container [2024-10-31 22:02:28,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:28,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:02:28,751 WARN L1657 CHandler]: Possible shadowing of function thread [2024-10-31 22:02:28,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:28,799 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:02:28,867 WARN L1657 CHandler]: Possible shadowing of function thread [2024-10-31 22:02:28,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:28,928 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:02:28,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28 WrapperNode [2024-10-31 22:02:28,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:28,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:28,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:02:28,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:02:28,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:28,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,011 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2024-10-31 22:02:29,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:29,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:02:29,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:02:29,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:02:29,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:02:29,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:02:29,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:02:29,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:02:29,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (1/1) ... [2024-10-31 22:02:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:29,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:02:29,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:02:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:02:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:02:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:02:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:02:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:02:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:02:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:02:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-31 22:02:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-31 22:02:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:02:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:02:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:02:29,198 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:02:29,403 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:02:29,407 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:02:29,653 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:02:29,654 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:02:29,703 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:02:29,703 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:02:29,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:29 BoogieIcfgContainer [2024-10-31 22:02:29,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:02:29,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:02:29,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:02:29,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:02:29,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:02:28" (1/3) ... [2024-10-31 22:02:29,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9e6c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:29, skipping insertion in model container [2024-10-31 22:02:29,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:28" (2/3) ... [2024-10-31 22:02:29,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9e6c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:29, skipping insertion in model container [2024-10-31 22:02:29,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:29" (3/3) ... [2024-10-31 22:02:29,718 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-15.i [2024-10-31 22:02:29,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:02:29,740 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-31 22:02:29,740 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:02:29,805 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:02:29,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 157 flow [2024-10-31 22:02:29,948 INFO L124 PetriNetUnfolderBase]: 9/119 cut-off events. [2024-10-31 22:02:29,948 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:02:29,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-10-31 22:02:29,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 75 transitions, 157 flow [2024-10-31 22:02:29,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 157 flow [2024-10-31 22:02:29,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:29,987 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:29,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-31 22:02:29,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:29,993 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:29,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:29,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:29,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:29,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:30,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:30,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1413199819, now seen corresponding path program 1 times [2024-10-31 22:02:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212641739] [2024-10-31 22:02:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:30,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212641739] [2024-10-31 22:02:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212641739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:30,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013683267] [2024-10-31 22:02:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:30,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:30,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 75 [2024-10-31 22:02:30,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-10-31 22:02:30,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:30,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 75 [2024-10-31 22:02:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:30,404 INFO L124 PetriNetUnfolderBase]: 1/105 cut-off events. [2024-10-31 22:02:30,405 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-10-31 22:02:30,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 1/105 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 8/101 useless extension candidates. Maximal degree in co-relation 3. Up to 5 conditions per place. [2024-10-31 22:02:30,407 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 4 selfloop transitions, 0 changer transitions 12/67 dead transitions. [2024-10-31 22:02:30,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 149 flow [2024-10-31 22:02:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:02:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-10-31 22:02:30,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.92 [2024-10-31 22:02:30,426 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 157 flow. Second operand 2 states and 138 transitions. [2024-10-31 22:02:30,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 149 flow [2024-10-31 22:02:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:30,437 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 117 flow [2024-10-31 22:02:30,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=117, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-10-31 22:02:30,448 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-10-31 22:02:30,448 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 117 flow [2024-10-31 22:02:30,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-10-31 22:02:30,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:30,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:30,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:02:30,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:30,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash -968080929, now seen corresponding path program 1 times [2024-10-31 22:02:30,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302607799] [2024-10-31 22:02:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:30,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:30,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302607799] [2024-10-31 22:02:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302607799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:30,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714496369] [2024-10-31 22:02:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:30,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:30,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2024-10-31 22:02:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-31 22:02:30,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2024-10-31 22:02:30,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:30,787 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2024-10-31 22:02:30,787 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:02:30,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 106 events. 3/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 124. Up to 13 conditions per place. [2024-10-31 22:02:30,790 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 8 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-31 22:02:30,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 139 flow [2024-10-31 22:02:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-10-31 22:02:30,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2024-10-31 22:02:30,794 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 117 flow. Second operand 3 states and 185 transitions. [2024-10-31 22:02:30,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 139 flow [2024-10-31 22:02:30,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:30,799 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 125 flow [2024-10-31 22:02:30,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-31 22:02:30,801 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-10-31 22:02:30,802 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 125 flow [2024-10-31 22:02:30,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-31 22:02:30,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:30,803 INFO L204 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] [2024-10-31 22:02:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:02:30,803 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:30,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:30,805 INFO L85 PathProgramCache]: Analyzing trace with hash 305169799, now seen corresponding path program 1 times [2024-10-31 22:02:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:30,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008529338] [2024-10-31 22:02:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008529338] [2024-10-31 22:02:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008529338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582586315] [2024-10-31 22:02:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:31,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:31,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 75 [2024-10-31 22:02:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:31,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 75 [2024-10-31 22:02:31,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:31,741 INFO L124 PetriNetUnfolderBase]: 12/112 cut-off events. [2024-10-31 22:02:31,741 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:02:31,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 112 events. 12/112 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 255 event pairs, 2 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 175. Up to 32 conditions per place. [2024-10-31 22:02:31,742 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 18 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-10-31 22:02:31,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 177 flow [2024-10-31 22:02:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-10-31 22:02:31,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:02:31,746 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 125 flow. Second operand 6 states and 300 transitions. [2024-10-31 22:02:31,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 177 flow [2024-10-31 22:02:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:31,751 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 129 flow [2024-10-31 22:02:31,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=6, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-10-31 22:02:31,752 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-10-31 22:02:31,752 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 129 flow [2024-10-31 22:02:31,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:31,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:31,754 INFO L204 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] [2024-10-31 22:02:31,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:02:31,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:31,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1477123848, now seen corresponding path program 1 times [2024-10-31 22:02:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874780983] [2024-10-31 22:02:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874780983] [2024-10-31 22:02:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874780983] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293411960] [2024-10-31 22:02:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:31,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:31,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:31,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:02:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:31,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:02:31,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:02:32,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293411960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:02:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:02:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067588201] [2024-10-31 22:02:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:32,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:32,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:32,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:32,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2024-10-31 22:02:32,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-31 22:02:32,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:32,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2024-10-31 22:02:32,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:32,055 INFO L124 PetriNetUnfolderBase]: 1/103 cut-off events. [2024-10-31 22:02:32,055 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-10-31 22:02:32,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 103 events. 1/103 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2024-10-31 22:02:32,056 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 7 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-10-31 22:02:32,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 158 flow [2024-10-31 22:02:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-10-31 22:02:32,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8622222222222222 [2024-10-31 22:02:32,059 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 129 flow. Second operand 3 states and 194 transitions. [2024-10-31 22:02:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 158 flow [2024-10-31 22:02:32,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 148 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:32,061 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 141 flow [2024-10-31 22:02:32,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-10-31 22:02:32,063 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2024-10-31 22:02:32,063 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 141 flow [2024-10-31 22:02:32,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-31 22:02:32,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:32,064 INFO L204 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] [2024-10-31 22:02:32,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:32,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:32,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:32,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1236436539, now seen corresponding path program 1 times [2024-10-31 22:02:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369837813] [2024-10-31 22:02:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:32,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369837813] [2024-10-31 22:02:32,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369837813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:32,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652434565] [2024-10-31 22:02:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:32,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:32,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:32,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:02:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:32,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:02:32,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:32,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652434565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:32,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:32,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:02:32,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332816904] [2024-10-31 22:02:32,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:32,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:32,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 75 [2024-10-31 22:02:32,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 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) [2024-10-31 22:02:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:32,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 75 [2024-10-31 22:02:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:32,772 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-10-31 22:02:32,772 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:02:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 63 events. 4/63 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2024-10-31 22:02:32,773 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 9 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-10-31 22:02:32,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 118 flow [2024-10-31 22:02:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-10-31 22:02:32,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2024-10-31 22:02:32,776 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 141 flow. Second operand 6 states and 344 transitions. [2024-10-31 22:02:32,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 118 flow [2024-10-31 22:02:32,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 108 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:32,778 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 82 flow [2024-10-31 22:02:32,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-10-31 22:02:32,779 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -28 predicate places. [2024-10-31 22:02:32,779 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 82 flow [2024-10-31 22:02:32,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 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) [2024-10-31 22:02:32,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:32,781 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-31 22:02:32,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:32,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:32,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-31 22:02:32,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash -684794120, now seen corresponding path program 1 times [2024-10-31 22:02:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625970830] [2024-10-31 22:02:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:33,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:33,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:33,052 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:02:33,053 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-31 22:02:33,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-31 22:02:33,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-31 22:02:33,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-31 22:02:33,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-31 22:02:33,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-31 22:02:33,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-31 22:02:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:02:33,058 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-31 22:02:33,061 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:02:33,061 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:02:33,078 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:02:33,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 83 transitions, 182 flow [2024-10-31 22:02:33,110 INFO L124 PetriNetUnfolderBase]: 16/200 cut-off events. [2024-10-31 22:02:33,110 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:02:33,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 200 events. 16/200 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 443 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2024-10-31 22:02:33,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 83 transitions, 182 flow [2024-10-31 22:02:33,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 83 transitions, 182 flow [2024-10-31 22:02:33,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:33,116 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:33,118 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-31 22:02:33,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:33,122 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:33,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:33,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:33,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:33,122 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:33,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1432291435, now seen corresponding path program 1 times [2024-10-31 22:02:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38176930] [2024-10-31 22:02:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38176930] [2024-10-31 22:02:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38176930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:33,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:33,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622706701] [2024-10-31 22:02:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:33,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:33,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2024-10-31 22:02:33,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2024-10-31 22:02:33,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:33,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2024-10-31 22:02:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:33,195 INFO L124 PetriNetUnfolderBase]: 7/212 cut-off events. [2024-10-31 22:02:33,195 INFO L125 PetriNetUnfolderBase]: For 31/40 co-relation queries the response was YES. [2024-10-31 22:02:33,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 212 events. 7/212 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 541 event pairs, 4 based on Foata normal form. 16/203 useless extension candidates. Maximal degree in co-relation 111. Up to 18 conditions per place. [2024-10-31 22:02:33,197 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 7 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2024-10-31 22:02:33,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 178 flow [2024-10-31 22:02:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:02:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2024-10-31 22:02:33,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9036144578313253 [2024-10-31 22:02:33,199 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 182 flow. Second operand 2 states and 150 transitions. [2024-10-31 22:02:33,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 178 flow [2024-10-31 22:02:33,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:33,202 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 164 flow [2024-10-31 22:02:33,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-10-31 22:02:33,204 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-10-31 22:02:33,204 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 164 flow [2024-10-31 22:02:33,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2024-10-31 22:02:33,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:33,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:33,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:02:33,205 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:33,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1669664558, now seen corresponding path program 1 times [2024-10-31 22:02:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494843059] [2024-10-31 22:02:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494843059] [2024-10-31 22:02:33,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494843059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:33,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:33,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978514798] [2024-10-31 22:02:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:33,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:33,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 83 [2024-10-31 22:02:33,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-31 22:02:33,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:33,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 83 [2024-10-31 22:02:33,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:33,351 INFO L124 PetriNetUnfolderBase]: 28/388 cut-off events. [2024-10-31 22:02:33,352 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-31 22:02:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 388 events. 28/388 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1856 event pairs, 10 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 469. Up to 65 conditions per place. [2024-10-31 22:02:33,355 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 12 selfloop transitions, 2 changer transitions 3/76 dead transitions. [2024-10-31 22:02:33,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 198 flow [2024-10-31 22:02:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-10-31 22:02:33,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8112449799196787 [2024-10-31 22:02:33,361 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 164 flow. Second operand 3 states and 202 transitions. [2024-10-31 22:02:33,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 198 flow [2024-10-31 22:02:33,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:33,366 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 170 flow [2024-10-31 22:02:33,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-10-31 22:02:33,367 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-10-31 22:02:33,367 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 170 flow [2024-10-31 22:02:33,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-31 22:02:33,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:33,370 INFO L204 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] [2024-10-31 22:02:33,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:02:33,370 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:33,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1393150298, now seen corresponding path program 1 times [2024-10-31 22:02:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400651060] [2024-10-31 22:02:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:33,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400651060] [2024-10-31 22:02:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400651060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:33,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:33,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596914814] [2024-10-31 22:02:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:33,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:33,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 83 [2024-10-31 22:02:33,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2024-10-31 22:02:33,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:33,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 83 [2024-10-31 22:02:33,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:34,023 INFO L124 PetriNetUnfolderBase]: 77/403 cut-off events. [2024-10-31 22:02:34,023 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-31 22:02:34,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 403 events. 77/403 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2009 event pairs, 12 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 621. Up to 122 conditions per place. [2024-10-31 22:02:34,027 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 25 selfloop transitions, 6 changer transitions 2/79 dead transitions. [2024-10-31 22:02:34,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 248 flow [2024-10-31 22:02:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2024-10-31 22:02:34,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:02:34,029 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 170 flow. Second operand 6 states and 332 transitions. [2024-10-31 22:02:34,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 248 flow [2024-10-31 22:02:34,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:02:34,032 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 174 flow [2024-10-31 22:02:34,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-10-31 22:02:34,033 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-10-31 22:02:34,034 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 174 flow [2024-10-31 22:02:34,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2024-10-31 22:02:34,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:34,035 INFO L204 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] [2024-10-31 22:02:34,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:02:34,035 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:34,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1549695339, now seen corresponding path program 1 times [2024-10-31 22:02:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:34,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166945409] [2024-10-31 22:02:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:34,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166945409] [2024-10-31 22:02:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166945409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171139120] [2024-10-31 22:02:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:34,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:34,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:34,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:34,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:02:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:34,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:02:34,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:02:34,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171139120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:34,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:02:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:02:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777167290] [2024-10-31 22:02:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:34,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:34,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2024-10-31 22:02:34,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-10-31 22:02:34,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:34,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2024-10-31 22:02:34,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:34,308 INFO L124 PetriNetUnfolderBase]: 23/360 cut-off events. [2024-10-31 22:02:34,308 INFO L125 PetriNetUnfolderBase]: For 55/65 co-relation queries the response was YES. [2024-10-31 22:02:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 360 events. 23/360 cut-off events. For 55/65 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1717 event pairs, 6 based on Foata normal form. 3/321 useless extension candidates. Maximal degree in co-relation 462. Up to 41 conditions per place. [2024-10-31 22:02:34,311 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 11 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-10-31 22:02:34,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 220 flow [2024-10-31 22:02:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-10-31 22:02:34,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8473895582329317 [2024-10-31 22:02:34,313 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 174 flow. Second operand 3 states and 211 transitions. [2024-10-31 22:02:34,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 220 flow [2024-10-31 22:02:34,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 208 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:34,316 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 192 flow [2024-10-31 22:02:34,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-10-31 22:02:34,317 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-10-31 22:02:34,317 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 192 flow [2024-10-31 22:02:34,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-10-31 22:02:34,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:34,318 INFO L204 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] [2024-10-31 22:02:34,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:34,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:02:34,523 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:34,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1302135797, now seen corresponding path program 1 times [2024-10-31 22:02:34,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:34,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693480935] [2024-10-31 22:02:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693480935] [2024-10-31 22:02:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693480935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67358288] [2024-10-31 22:02:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:34,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:34,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:02:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:34,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:02:34,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:34,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67358288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:34,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:34,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:02:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936033274] [2024-10-31 22:02:34,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:34,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:34,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 83 [2024-10-31 22:02:34,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2024-10-31 22:02:34,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:34,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 83 [2024-10-31 22:02:34,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:35,038 INFO L124 PetriNetUnfolderBase]: 22/149 cut-off events. [2024-10-31 22:02:35,038 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-31 22:02:35,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 149 events. 22/149 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 388 event pairs, 0 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 245. Up to 26 conditions per place. [2024-10-31 22:02:35,039 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 18 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-31 22:02:35,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 198 flow [2024-10-31 22:02:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:02:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:02:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2024-10-31 22:02:35,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7469879518072289 [2024-10-31 22:02:35,042 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 192 flow. Second operand 9 states and 558 transitions. [2024-10-31 22:02:35,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 198 flow [2024-10-31 22:02:35,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:35,043 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 122 flow [2024-10-31 22:02:35,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-10-31 22:02:35,044 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2024-10-31 22:02:35,044 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 122 flow [2024-10-31 22:02:35,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2024-10-31 22:02:35,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:35,045 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:35,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:02:35,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:35,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 22:02:35,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1277331358, now seen corresponding path program 1 times [2024-10-31 22:02:35,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51507374] [2024-10-31 22:02:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:35,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:35,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:35,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:35,304 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:02:35,304 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-31 22:02:35,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-10-31 22:02:35,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-10-31 22:02:35,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-10-31 22:02:35,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-10-31 22:02:35,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-10-31 22:02:35,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-10-31 22:02:35,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-10-31 22:02:35,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:02:35,306 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-31 22:02:35,307 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:02:35,307 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:02:35,323 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:02:35,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 209 flow [2024-10-31 22:02:35,362 INFO L124 PetriNetUnfolderBase]: 28/328 cut-off events. [2024-10-31 22:02:35,362 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 22:02:35,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 328 events. 28/328 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 1 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 208. Up to 16 conditions per place. [2024-10-31 22:02:35,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 209 flow [2024-10-31 22:02:35,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 209 flow [2024-10-31 22:02:35,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:35,368 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:35,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-31 22:02:35,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:35,371 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:35,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:35,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:35,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:35,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash -150921205, now seen corresponding path program 1 times [2024-10-31 22:02:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826254639] [2024-10-31 22:02:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826254639] [2024-10-31 22:02:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826254639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877315151] [2024-10-31 22:02:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:35,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:35,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2024-10-31 22:02:35,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 209 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-10-31 22:02:35,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:35,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2024-10-31 22:02:35,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:35,479 INFO L124 PetriNetUnfolderBase]: 36/492 cut-off events. [2024-10-31 22:02:35,479 INFO L125 PetriNetUnfolderBase]: For 123/178 co-relation queries the response was YES. [2024-10-31 22:02:35,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 492 events. 36/492 cut-off events. For 123/178 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2098 event pairs, 27 based on Foata normal form. 39/471 useless extension candidates. Maximal degree in co-relation 303. Up to 68 conditions per place. [2024-10-31 22:02:35,482 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 10 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2024-10-31 22:02:35,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 209 flow [2024-10-31 22:02:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:02:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2024-10-31 22:02:35,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8901098901098901 [2024-10-31 22:02:35,484 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 209 flow. Second operand 2 states and 162 transitions. [2024-10-31 22:02:35,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 209 flow [2024-10-31 22:02:35,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:35,486 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 189 flow [2024-10-31 22:02:35,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=189, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-10-31 22:02:35,489 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-10-31 22:02:35,489 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 189 flow [2024-10-31 22:02:35,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-10-31 22:02:35,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:35,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:35,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:02:35,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:35,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 96712397, now seen corresponding path program 1 times [2024-10-31 22:02:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912267582] [2024-10-31 22:02:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912267582] [2024-10-31 22:02:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912267582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606630787] [2024-10-31 22:02:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:35,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:35,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2024-10-31 22:02:35,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:35,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:35,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2024-10-31 22:02:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:35,725 INFO L124 PetriNetUnfolderBase]: 117/1024 cut-off events. [2024-10-31 22:02:35,725 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-10-31 22:02:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 1024 events. 117/1024 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6565 event pairs, 104 based on Foata normal form. 1/925 useless extension candidates. Maximal degree in co-relation 1291. Up to 214 conditions per place. [2024-10-31 22:02:35,735 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 15 selfloop transitions, 2 changer transitions 3/83 dead transitions. [2024-10-31 22:02:35,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 229 flow [2024-10-31 22:02:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-10-31 22:02:35,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2024-10-31 22:02:35,737 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 189 flow. Second operand 3 states and 217 transitions. [2024-10-31 22:02:35,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 229 flow [2024-10-31 22:02:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:35,740 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 195 flow [2024-10-31 22:02:35,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-10-31 22:02:35,742 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-10-31 22:02:35,742 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 195 flow [2024-10-31 22:02:35,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:35,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:35,743 INFO L204 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] [2024-10-31 22:02:35,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:02:35,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:35,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1344078133, now seen corresponding path program 1 times [2024-10-31 22:02:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:35,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495583068] [2024-10-31 22:02:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:36,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495583068] [2024-10-31 22:02:36,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495583068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:36,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:36,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017021742] [2024-10-31 22:02:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:36,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:36,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 91 [2024-10-31 22:02:36,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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) [2024-10-31 22:02:36,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:36,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 91 [2024-10-31 22:02:36,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:36,401 INFO L124 PetriNetUnfolderBase]: 314/1091 cut-off events. [2024-10-31 22:02:36,401 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-31 22:02:36,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 1091 events. 314/1091 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6431 event pairs, 196 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1764. Up to 419 conditions per place. [2024-10-31 22:02:36,409 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 32 selfloop transitions, 6 changer transitions 2/90 dead transitions. [2024-10-31 22:02:36,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 295 flow [2024-10-31 22:02:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2024-10-31 22:02:36,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2024-10-31 22:02:36,411 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 195 flow. Second operand 6 states and 363 transitions. [2024-10-31 22:02:36,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 295 flow [2024-10-31 22:02:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:02:36,415 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 199 flow [2024-10-31 22:02:36,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-10-31 22:02:36,416 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-10-31 22:02:36,416 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 199 flow [2024-10-31 22:02:36,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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) [2024-10-31 22:02:36,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:36,417 INFO L204 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] [2024-10-31 22:02:36,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:02:36,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:36,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 850910762, now seen corresponding path program 1 times [2024-10-31 22:02:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67218865] [2024-10-31 22:02:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67218865] [2024-10-31 22:02:36,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67218865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853752409] [2024-10-31 22:02:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:36,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:36,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:02:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:36,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:02:36,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:02:36,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853752409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:36,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:02:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:02:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573141643] [2024-10-31 22:02:36,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:36,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:36,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 91 [2024-10-31 22:02:36,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2024-10-31 22:02:36,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:36,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 91 [2024-10-31 22:02:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:36,809 INFO L124 PetriNetUnfolderBase]: 123/1035 cut-off events. [2024-10-31 22:02:36,810 INFO L125 PetriNetUnfolderBase]: For 228/285 co-relation queries the response was YES. [2024-10-31 22:02:36,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1035 events. 123/1035 cut-off events. For 228/285 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6894 event pairs, 40 based on Foata normal form. 6/913 useless extension candidates. Maximal degree in co-relation 1375. Up to 166 conditions per place. [2024-10-31 22:02:36,816 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 15 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-10-31 22:02:36,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 262 flow [2024-10-31 22:02:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-10-31 22:02:36,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2024-10-31 22:02:36,817 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 199 flow. Second operand 3 states and 228 transitions. [2024-10-31 22:02:36,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 262 flow [2024-10-31 22:02:36,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:36,820 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 225 flow [2024-10-31 22:02:36,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-31 22:02:36,821 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-10-31 22:02:36,821 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 225 flow [2024-10-31 22:02:36,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2024-10-31 22:02:36,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:36,822 INFO L204 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] [2024-10-31 22:02:36,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:02:37,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 22:02:37,027 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:37,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1376052293, now seen corresponding path program 1 times [2024-10-31 22:02:37,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186873147] [2024-10-31 22:02:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:37,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186873147] [2024-10-31 22:02:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186873147] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801060567] [2024-10-31 22:02:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:37,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:37,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:02:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:37,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:02:37,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:37,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801060567] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:37,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:02:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125161470] [2024-10-31 22:02:37,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:37,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:37,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-10-31 22:02:37,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-10-31 22:02:37,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:37,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-10-31 22:02:37,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:37,730 INFO L124 PetriNetUnfolderBase]: 192/1204 cut-off events. [2024-10-31 22:02:37,730 INFO L125 PetriNetUnfolderBase]: For 463/486 co-relation queries the response was YES. [2024-10-31 22:02:37,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1204 events. 192/1204 cut-off events. For 463/486 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7863 event pairs, 30 based on Foata normal form. 6/1111 useless extension candidates. Maximal degree in co-relation 1906. Up to 218 conditions per place. [2024-10-31 22:02:37,739 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 33 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-10-31 22:02:37,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 375 flow [2024-10-31 22:02:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:02:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:02:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 608 transitions. [2024-10-31 22:02:37,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7423687423687424 [2024-10-31 22:02:37,741 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 225 flow. Second operand 9 states and 608 transitions. [2024-10-31 22:02:37,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 375 flow [2024-10-31 22:02:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:37,745 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 265 flow [2024-10-31 22:02:37,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-10-31 22:02:37,746 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-10-31 22:02:37,746 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 265 flow [2024-10-31 22:02:37,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-10-31 22:02:37,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:37,747 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:37,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:37,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-31 22:02:37,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:37,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1423037198, now seen corresponding path program 1 times [2024-10-31 22:02:37,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:37,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138943523] [2024-10-31 22:02:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138943523] [2024-10-31 22:02:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138943523] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398373677] [2024-10-31 22:02:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:38,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:38,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:38,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:38,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:02:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:38,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:02:38,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:38,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:38,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398373677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:38,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:38,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-31 22:02:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117100380] [2024-10-31 22:02:38,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:38,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:02:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:02:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:02:38,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-10-31 22:02:38,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 265 flow. Second operand has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 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) [2024-10-31 22:02:38,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:38,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-10-31 22:02:38,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:38,978 INFO L124 PetriNetUnfolderBase]: 78/359 cut-off events. [2024-10-31 22:02:38,979 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-10-31 22:02:38,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 359 events. 78/359 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 0 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 714. Up to 86 conditions per place. [2024-10-31 22:02:38,986 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 30 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-10-31 22:02:38,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 332 flow [2024-10-31 22:02:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:02:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:02:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2024-10-31 22:02:38,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7298534798534798 [2024-10-31 22:02:38,997 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 265 flow. Second operand 12 states and 797 transitions. [2024-10-31 22:02:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 332 flow [2024-10-31 22:02:38,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 317 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-31 22:02:39,000 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 177 flow [2024-10-31 22:02:39,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2024-10-31 22:02:39,002 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -15 predicate places. [2024-10-31 22:02:39,002 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 177 flow [2024-10-31 22:02:39,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 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) [2024-10-31 22:02:39,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:39,003 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:39,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:02:39,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:02:39,211 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-31 22:02:39,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 274865753, now seen corresponding path program 1 times [2024-10-31 22:02:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034207197] [2024-10-31 22:02:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:39,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:39,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:39,284 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:02:39,285 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-31 22:02:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-31 22:02:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-31 22:02:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-31 22:02:39,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-31 22:02:39,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-31 22:02:39,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-31 22:02:39,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-31 22:02:39,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-31 22:02:39,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 22:02:39,287 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:39,287 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:02:39,288 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 22:02:39,306 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:02:39,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 238 flow [2024-10-31 22:02:39,370 INFO L124 PetriNetUnfolderBase]: 52/552 cut-off events. [2024-10-31 22:02:39,370 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-31 22:02:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 552 events. 52/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1935 event pairs, 6 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 348. Up to 32 conditions per place. [2024-10-31 22:02:39,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 238 flow [2024-10-31 22:02:39,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 238 flow [2024-10-31 22:02:39,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:39,376 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:39,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-31 22:02:39,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:39,377 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:39,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:39,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:39,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:39,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:39,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 958529195, now seen corresponding path program 1 times [2024-10-31 22:02:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:39,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582610704] [2024-10-31 22:02:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582610704] [2024-10-31 22:02:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582610704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:39,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104952303] [2024-10-31 22:02:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:39,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:39,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 99 [2024-10-31 22:02:39,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-10-31 22:02:39,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:39,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 99 [2024-10-31 22:02:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:39,606 INFO L124 PetriNetUnfolderBase]: 157/1308 cut-off events. [2024-10-31 22:02:39,606 INFO L125 PetriNetUnfolderBase]: For 484/769 co-relation queries the response was YES. [2024-10-31 22:02:39,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1308 events. 157/1308 cut-off events. For 484/769 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8586 event pairs, 128 based on Foata normal form. 105/1248 useless extension candidates. Maximal degree in co-relation 947. Up to 250 conditions per place. [2024-10-31 22:02:39,613 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 13 selfloop transitions, 0 changer transitions 0/88 dead transitions. [2024-10-31 22:02:39,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 242 flow [2024-10-31 22:02:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:02:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2024-10-31 22:02:39,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2024-10-31 22:02:39,615 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 238 flow. Second operand 2 states and 174 transitions. [2024-10-31 22:02:39,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 242 flow [2024-10-31 22:02:39,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:39,617 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 216 flow [2024-10-31 22:02:39,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-10-31 22:02:39,618 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-10-31 22:02:39,618 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 216 flow [2024-10-31 22:02:39,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-10-31 22:02:39,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:39,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:39,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 22:02:39,619 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 36082640, now seen corresponding path program 1 times [2024-10-31 22:02:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870425224] [2024-10-31 22:02:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870425224] [2024-10-31 22:02:39,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870425224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:39,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:39,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791399876] [2024-10-31 22:02:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:39,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:39,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2024-10-31 22:02:39,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-10-31 22:02:39,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:39,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2024-10-31 22:02:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:40,095 INFO L124 PetriNetUnfolderBase]: 422/2882 cut-off events. [2024-10-31 22:02:40,095 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2024-10-31 22:02:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2882 events. 422/2882 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23758 event pairs, 278 based on Foata normal form. 1/2616 useless extension candidates. Maximal degree in co-relation 3731. Up to 675 conditions per place. [2024-10-31 22:02:40,110 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 18 selfloop transitions, 2 changer transitions 3/90 dead transitions. [2024-10-31 22:02:40,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 262 flow [2024-10-31 22:02:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2024-10-31 22:02:40,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811447811447811 [2024-10-31 22:02:40,111 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 216 flow. Second operand 3 states and 232 transitions. [2024-10-31 22:02:40,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 262 flow [2024-10-31 22:02:40,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:40,114 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 222 flow [2024-10-31 22:02:40,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-10-31 22:02:40,114 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-10-31 22:02:40,115 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 222 flow [2024-10-31 22:02:40,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-10-31 22:02:40,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:40,115 INFO L204 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] [2024-10-31 22:02:40,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 22:02:40,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:40,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash 157953304, now seen corresponding path program 1 times [2024-10-31 22:02:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770517571] [2024-10-31 22:02:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:40,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770517571] [2024-10-31 22:02:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770517571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:40,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:40,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:40,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430380226] [2024-10-31 22:02:40,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:40,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:40,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:40,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:40,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 99 [2024-10-31 22:02:40,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2024-10-31 22:02:40,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:40,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 99 [2024-10-31 22:02:40,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:41,093 INFO L124 PetriNetUnfolderBase]: 1099/3285 cut-off events. [2024-10-31 22:02:41,093 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-10-31 22:02:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 3285 events. 1099/3285 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24274 event pairs, 150 based on Foata normal form. 0/3063 useless extension candidates. Maximal degree in co-relation 5355. Up to 1372 conditions per place. [2024-10-31 22:02:41,116 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 39 selfloop transitions, 6 changer transitions 2/101 dead transitions. [2024-10-31 22:02:41,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 344 flow [2024-10-31 22:02:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 394 transitions. [2024-10-31 22:02:41,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632996632996633 [2024-10-31 22:02:41,119 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 222 flow. Second operand 6 states and 394 transitions. [2024-10-31 22:02:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 344 flow [2024-10-31 22:02:41,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:02:41,122 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 226 flow [2024-10-31 22:02:41,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-10-31 22:02:41,122 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-10-31 22:02:41,123 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 226 flow [2024-10-31 22:02:41,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2024-10-31 22:02:41,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:41,123 INFO L204 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] [2024-10-31 22:02:41,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 22:02:41,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:41,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 89007559, now seen corresponding path program 1 times [2024-10-31 22:02:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185029889] [2024-10-31 22:02:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:41,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185029889] [2024-10-31 22:02:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185029889] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578931684] [2024-10-31 22:02:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:41,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:41,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:41,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:02:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:41,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:02:41,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:02:41,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:41,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578931684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:41,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:02:41,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:02:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208628975] [2024-10-31 22:02:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:41,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:41,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2024-10-31 22:02:41,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-10-31 22:02:41,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:41,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2024-10-31 22:02:41,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:41,730 INFO L124 PetriNetUnfolderBase]: 492/3013 cut-off events. [2024-10-31 22:02:41,730 INFO L125 PetriNetUnfolderBase]: For 883/1117 co-relation queries the response was YES. [2024-10-31 22:02:41,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3013 events. 492/3013 cut-off events. For 883/1117 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25680 event pairs, 183 based on Foata normal form. 10/2653 useless extension candidates. Maximal degree in co-relation 4120. Up to 584 conditions per place. [2024-10-31 22:02:41,752 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 19 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-10-31 22:02:41,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 306 flow [2024-10-31 22:02:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2024-10-31 22:02:41,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8249158249158249 [2024-10-31 22:02:41,754 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 226 flow. Second operand 3 states and 245 transitions. [2024-10-31 22:02:41,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 306 flow [2024-10-31 22:02:41,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:41,756 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 260 flow [2024-10-31 22:02:41,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-10-31 22:02:41,757 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-10-31 22:02:41,757 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 260 flow [2024-10-31 22:02:41,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-10-31 22:02:41,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:41,758 INFO L204 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] [2024-10-31 22:02:41,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:41,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-31 22:02:41,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:41,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1631746833, now seen corresponding path program 1 times [2024-10-31 22:02:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886595367] [2024-10-31 22:02:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:41,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:42,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:42,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886595367] [2024-10-31 22:02:42,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886595367] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:42,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064307352] [2024-10-31 22:02:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:42,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:42,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:02:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:42,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:02:42,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:42,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064307352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:42,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:42,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:02:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478343710] [2024-10-31 22:02:42,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:42,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:42,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-10-31 22:02:42,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 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) [2024-10-31 22:02:42,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:42,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-10-31 22:02:42,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:42,920 INFO L124 PetriNetUnfolderBase]: 753/3511 cut-off events. [2024-10-31 22:02:42,920 INFO L125 PetriNetUnfolderBase]: For 1787/1886 co-relation queries the response was YES. [2024-10-31 22:02:42,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 3511 events. 753/3511 cut-off events. For 1787/1886 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30257 event pairs, 127 based on Foata normal form. 6/3210 useless extension candidates. Maximal degree in co-relation 5943. Up to 854 conditions per place. [2024-10-31 22:02:42,946 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 38 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-10-31 22:02:42,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 424 flow [2024-10-31 22:02:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:02:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:02:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2024-10-31 22:02:42,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-10-31 22:02:42,949 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 260 flow. Second operand 9 states and 648 transitions. [2024-10-31 22:02:42,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 424 flow [2024-10-31 22:02:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:42,954 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 298 flow [2024-10-31 22:02:42,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-10-31 22:02:42,955 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-10-31 22:02:42,955 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 298 flow [2024-10-31 22:02:42,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 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) [2024-10-31 22:02:42,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:42,956 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:42,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:02:43,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-31 22:02:43,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:43,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash 46783590, now seen corresponding path program 1 times [2024-10-31 22:02:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:43,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461121061] [2024-10-31 22:02:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:43,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:43,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461121061] [2024-10-31 22:02:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461121061] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:43,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545004442] [2024-10-31 22:02:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:43,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:43,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:43,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:02:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:43,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:02:43,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:43,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545004442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:43,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-31 22:02:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326071578] [2024-10-31 22:02:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:43,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:02:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:02:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:02:43,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-10-31 22:02:43,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 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) [2024-10-31 22:02:43,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:43,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-10-31 22:02:43,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:44,262 INFO L124 PetriNetUnfolderBase]: 230/771 cut-off events. [2024-10-31 22:02:44,262 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-10-31 22:02:44,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 771 events. 230/771 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4060 event pairs, 0 based on Foata normal form. 24/795 useless extension candidates. Maximal degree in co-relation 1670. Up to 246 conditions per place. [2024-10-31 22:02:44,269 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 45 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-10-31 22:02:44,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 462 flow [2024-10-31 22:02:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:02:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:02:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1065 transitions. [2024-10-31 22:02:44,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-10-31 22:02:44,275 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 298 flow. Second operand 15 states and 1065 transitions. [2024-10-31 22:02:44,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 462 flow [2024-10-31 22:02:44,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 439 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-31 22:02:44,280 INFO L231 Difference]: Finished difference. Result has 87 places, 63 transitions, 216 flow [2024-10-31 22:02:44,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=87, PETRI_TRANSITIONS=63} [2024-10-31 22:02:44,281 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2024-10-31 22:02:44,281 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 63 transitions, 216 flow [2024-10-31 22:02:44,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 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) [2024-10-31 22:02:44,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:44,285 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:44,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 22:02:44,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-31 22:02:44,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-31 22:02:44,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 248426653, now seen corresponding path program 1 times [2024-10-31 22:02:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343708543] [2024-10-31 22:02:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:44,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:44,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:44,567 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-31 22:02:44,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-31 22:02:44,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-31 22:02:44,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-31 22:02:44,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-31 22:02:44,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-31 22:02:44,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-31 22:02:44,570 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:44,570 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:02:44,571 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-31 22:02:44,590 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-31 22:02:44,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 269 flow [2024-10-31 22:02:44,704 INFO L124 PetriNetUnfolderBase]: 104/972 cut-off events. [2024-10-31 22:02:44,704 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-10-31 22:02:44,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 972 events. 104/972 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4453 event pairs, 23 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 597. Up to 80 conditions per place. [2024-10-31 22:02:44,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 269 flow [2024-10-31 22:02:44,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 269 flow [2024-10-31 22:02:44,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:44,716 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:44,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-31 22:02:44,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:44,718 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:44,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:44,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:44,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:44,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:44,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash 465675339, now seen corresponding path program 1 times [2024-10-31 22:02:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:44,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703346498] [2024-10-31 22:02:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703346498] [2024-10-31 22:02:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703346498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486953199] [2024-10-31 22:02:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:44,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:44,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2024-10-31 22:02:44,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 269 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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) [2024-10-31 22:02:44,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:44,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2024-10-31 22:02:44,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:45,279 INFO L124 PetriNetUnfolderBase]: 622/3788 cut-off events. [2024-10-31 22:02:45,280 INFO L125 PetriNetUnfolderBase]: For 1688/2994 co-relation queries the response was YES. [2024-10-31 22:02:45,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 3788 events. 622/3788 cut-off events. For 1688/2994 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 33590 event pairs, 527 based on Foata normal form. 306/3603 useless extension candidates. Maximal degree in co-relation 3055. Up to 892 conditions per place. [2024-10-31 22:02:45,313 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 16 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-10-31 22:02:45,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 277 flow [2024-10-31 22:02:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:02:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2024-10-31 22:02:45,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691588785046729 [2024-10-31 22:02:45,315 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 269 flow. Second operand 2 states and 186 transitions. [2024-10-31 22:02:45,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 277 flow [2024-10-31 22:02:45,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:45,318 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 245 flow [2024-10-31 22:02:45,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-10-31 22:02:45,322 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-10-31 22:02:45,322 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 245 flow [2024-10-31 22:02:45,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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) [2024-10-31 22:02:45,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:45,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:45,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-31 22:02:45,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:45,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1851553829, now seen corresponding path program 1 times [2024-10-31 22:02:45,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233217536] [2024-10-31 22:02:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:45,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233217536] [2024-10-31 22:02:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233217536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:02:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20924517] [2024-10-31 22:02:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:45,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:45,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 107 [2024-10-31 22:02:45,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:45,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:45,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 107 [2024-10-31 22:02:45,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:46,807 INFO L124 PetriNetUnfolderBase]: 1439/8085 cut-off events. [2024-10-31 22:02:46,808 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-10-31 22:02:46,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10772 conditions, 8085 events. 1439/8085 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 81608 event pairs, 1050 based on Foata normal form. 1/7383 useless extension candidates. Maximal degree in co-relation 10764. Up to 2112 conditions per place. [2024-10-31 22:02:46,862 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 21 selfloop transitions, 2 changer transitions 3/97 dead transitions. [2024-10-31 22:02:46,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 297 flow [2024-10-31 22:02:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-10-31 22:02:46,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7694704049844237 [2024-10-31 22:02:46,864 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 245 flow. Second operand 3 states and 247 transitions. [2024-10-31 22:02:46,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 297 flow [2024-10-31 22:02:46,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 297 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:02:46,871 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 251 flow [2024-10-31 22:02:46,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-10-31 22:02:46,872 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-10-31 22:02:46,872 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 251 flow [2024-10-31 22:02:46,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:46,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:46,873 INFO L204 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] [2024-10-31 22:02:46,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-31 22:02:46,873 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:46,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2129743107, now seen corresponding path program 1 times [2024-10-31 22:02:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343319790] [2024-10-31 22:02:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343319790] [2024-10-31 22:02:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343319790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:02:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050032520] [2024-10-31 22:02:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:47,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:02:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:02:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:47,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 107 [2024-10-31 22:02:47,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 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) [2024-10-31 22:02:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 107 [2024-10-31 22:02:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:48,757 INFO L124 PetriNetUnfolderBase]: 3704/9558 cut-off events. [2024-10-31 22:02:48,757 INFO L125 PetriNetUnfolderBase]: For 1820/1820 co-relation queries the response was YES. [2024-10-31 22:02:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15928 conditions, 9558 events. 3704/9558 cut-off events. For 1820/1820 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 81162 event pairs, 460 based on Foata normal form. 0/8948 useless extension candidates. Maximal degree in co-relation 15918. Up to 4549 conditions per place. [2024-10-31 22:02:48,949 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 46 selfloop transitions, 6 changer transitions 2/112 dead transitions. [2024-10-31 22:02:48,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 395 flow [2024-10-31 22:02:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:02:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:02:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2024-10-31 22:02:48,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.661993769470405 [2024-10-31 22:02:48,952 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 251 flow. Second operand 6 states and 425 transitions. [2024-10-31 22:02:48,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 395 flow [2024-10-31 22:02:48,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:02:48,960 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 255 flow [2024-10-31 22:02:48,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-10-31 22:02:48,961 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-10-31 22:02:48,961 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 255 flow [2024-10-31 22:02:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 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) [2024-10-31 22:02:48,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:48,962 INFO L204 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] [2024-10-31 22:02:48,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-31 22:02:48,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:48,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash 459562348, now seen corresponding path program 1 times [2024-10-31 22:02:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917952954] [2024-10-31 22:02:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:49,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917952954] [2024-10-31 22:02:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917952954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035132518] [2024-10-31 22:02:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:49,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:49,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:02:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:49,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:02:49,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:02:49,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035132518] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:02:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:02:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942227095] [2024-10-31 22:02:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:49,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:49,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:02:49,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2024-10-31 22:02:49,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-10-31 22:02:49,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:49,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2024-10-31 22:02:49,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:50,450 INFO L124 PetriNetUnfolderBase]: 1758/8878 cut-off events. [2024-10-31 22:02:50,450 INFO L125 PetriNetUnfolderBase]: For 3119/3912 co-relation queries the response was YES. [2024-10-31 22:02:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 8878 events. 1758/8878 cut-off events. For 3119/3912 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 92637 event pairs, 725 based on Foata normal form. 15/7831 useless extension candidates. Maximal degree in co-relation 12445. Up to 1923 conditions per place. [2024-10-31 22:02:50,504 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 23 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-10-31 22:02:50,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 352 flow [2024-10-31 22:02:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-10-31 22:02:50,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8161993769470405 [2024-10-31 22:02:50,506 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 255 flow. Second operand 3 states and 262 transitions. [2024-10-31 22:02:50,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 352 flow [2024-10-31 22:02:50,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:02:50,511 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 297 flow [2024-10-31 22:02:50,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-10-31 22:02:50,512 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-10-31 22:02:50,512 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 297 flow [2024-10-31 22:02:50,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-10-31 22:02:50,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:50,512 INFO L204 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] [2024-10-31 22:02:50,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:50,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:50,713 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:50,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1531530531, now seen corresponding path program 1 times [2024-10-31 22:02:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62336184] [2024-10-31 22:02:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:50,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62336184] [2024-10-31 22:02:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62336184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867268086] [2024-10-31 22:02:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:50,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:50,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 22:02:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:50,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:02:50,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:50,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867268086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:50,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:02:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585681207] [2024-10-31 22:02:50,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:50,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:02:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:02:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:02:51,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-10-31 22:02:51,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2024-10-31 22:02:51,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:51,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-10-31 22:02:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:52,519 INFO L124 PetriNetUnfolderBase]: 2499/9970 cut-off events. [2024-10-31 22:02:52,519 INFO L125 PetriNetUnfolderBase]: For 6038/6374 co-relation queries the response was YES. [2024-10-31 22:02:52,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17517 conditions, 9970 events. 2499/9970 cut-off events. For 6038/6374 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 100525 event pairs, 517 based on Foata normal form. 6/9043 useless extension candidates. Maximal degree in co-relation 17506. Up to 2811 conditions per place. [2024-10-31 22:02:52,598 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 43 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2024-10-31 22:02:52,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 475 flow [2024-10-31 22:02:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:02:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:02:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2024-10-31 22:02:52,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7144340602284528 [2024-10-31 22:02:52,602 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 297 flow. Second operand 9 states and 688 transitions. [2024-10-31 22:02:52,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 475 flow [2024-10-31 22:02:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:02:52,611 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 333 flow [2024-10-31 22:02:52,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2024-10-31 22:02:52,612 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2024-10-31 22:02:52,612 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 333 flow [2024-10-31 22:02:52,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2024-10-31 22:02:52,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:52,613 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:52,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-31 22:02:52,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:52,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:52,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:52,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1763992574, now seen corresponding path program 1 times [2024-10-31 22:02:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:52,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835545947] [2024-10-31 22:02:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:52,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835545947] [2024-10-31 22:02:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835545947] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:53,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214606995] [2024-10-31 22:02:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:53,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:53,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:53,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 22:02:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:53,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:02:53,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:53,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214606995] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:53,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:53,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-31 22:02:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768287536] [2024-10-31 22:02:53,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:53,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:02:53,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:02:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:02:53,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-10-31 22:02:53,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 333 flow. Second operand has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 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) [2024-10-31 22:02:53,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:53,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-10-31 22:02:53,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:54,079 INFO L124 PetriNetUnfolderBase]: 614/1679 cut-off events. [2024-10-31 22:02:54,079 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2024-10-31 22:02:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 1679 events. 614/1679 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10274 event pairs, 0 based on Foata normal form. 56/1735 useless extension candidates. Maximal degree in co-relation 3842. Up to 646 conditions per place. [2024-10-31 22:02:54,091 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 63 selfloop transitions, 16 changer transitions 0/121 dead transitions. [2024-10-31 22:02:54,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 612 flow [2024-10-31 22:02:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:02:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-31 22:02:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1360 transitions. [2024-10-31 22:02:54,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7061266874350987 [2024-10-31 22:02:54,094 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 333 flow. Second operand 18 states and 1360 transitions. [2024-10-31 22:02:54,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 612 flow [2024-10-31 22:02:54,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 579 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-31 22:02:54,102 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 255 flow [2024-10-31 22:02:54,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=255, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2024-10-31 22:02:54,106 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -11 predicate places. [2024-10-31 22:02:54,106 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 255 flow [2024-10-31 22:02:54,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 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) [2024-10-31 22:02:54,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:54,107 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:54,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-31 22:02:54,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f721b7-98ee-44ce-b69d-788dcaf610a2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-31 22:02:54,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-31 22:02:54,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash 939663086, now seen corresponding path program 1 times [2024-10-31 22:02:54,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:54,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88602182] [2024-10-31 22:02:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:54,386 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:02:54,386 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-31 22:02:54,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2024-10-31 22:02:54,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2024-10-31 22:02:54,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2024-10-31 22:02:54,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2024-10-31 22:02:54,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2024-10-31 22:02:54,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2024-10-31 22:02:54,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2024-10-31 22:02:54,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2024-10-31 22:02:54,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2024-10-31 22:02:54,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2024-10-31 22:02:54,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-31 22:02:54,389 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:54,390 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:02:54,390 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-31 22:02:54,419 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-31 22:02:54,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 302 flow [2024-10-31 22:02:54,673 INFO L124 PetriNetUnfolderBase]: 220/1792 cut-off events. [2024-10-31 22:02:54,674 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-10-31 22:02:54,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1792 events. 220/1792 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10548 event pairs, 72 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 1071. Up to 192 conditions per place. [2024-10-31 22:02:54,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 115 transitions, 302 flow [2024-10-31 22:02:54,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 302 flow [2024-10-31 22:02:54,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:54,685 INFO L333 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, 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;@2cf2c4df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:54,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-31 22:02:54,688 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:02:54,688 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-31 22:02:54,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:02:54,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:54,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:54,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:02:54,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1629482773, now seen corresponding path program 1 times [2024-10-31 22:02:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:54,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123790421] [2024-10-31 22:02:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:54,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123790421] [2024-10-31 22:02:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123790421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:54,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:02:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406066480] [2024-10-31 22:02:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:54,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:54,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2024-10-31 22:02:54,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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) [2024-10-31 22:02:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:54,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2024-10-31 22:02:54,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand