./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:02,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:02,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 10:49:02,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:02,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:02,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:02,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:02,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:02,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:02,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:02,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:02,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:02,582 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:02,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:02,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:02,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:02,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:02,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:02,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:02,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:02,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:02,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:02,588 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 10:49:02,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:49:02,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:02,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:02,590 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:02,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:02,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:02,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:02,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:02,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:02,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:02,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:02,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:02,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:02,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:02,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:02,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:02,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:02,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:02,598 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_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a [2023-11-26 10:49:02,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:02,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:02,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:02,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:02,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:02,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2023-11-26 10:49:06,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:06,530 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:06,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2023-11-26 10:49:06,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/data/70a42771f/b081bfa22a694e22a78fd78fcbf4b9f6/FLAG3d6cd5470 [2023-11-26 10:49:06,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/data/70a42771f/b081bfa22a694e22a78fd78fcbf4b9f6 [2023-11-26 10:49:06,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:06,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:06,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:06,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:06,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:06,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:06,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c262428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:06, skipping insertion in model container [2023-11-26 10:49:06,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:06" (1/1) ... [2023-11-26 10:49:06,659 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:07,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:07,051 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:07,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:07,175 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:49:07,175 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:49:07,183 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:07,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07 WrapperNode [2023-11-26 10:49:07,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:07,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:07,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:07,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:07,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,259 INFO L138 Inliner]: procedures = 167, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2023-11-26 10:49:07,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:07,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:07,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:07,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:07,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:07,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:07,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:07,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:07,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (1/1) ... [2023-11-26 10:49:07,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:07,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:07,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:07,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0b3c17-bdbc-41e8-b25e-7fdd1fc4be02/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 10:49:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 10:49:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:49:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:49:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:49:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:49:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:49:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:49:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:49:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:49:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:07,386 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:49:07,580 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:07,582 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:07,749 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:07,801 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:07,801 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:49:07,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:07 BoogieIcfgContainer [2023-11-26 10:49:07,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:07,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:07,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:07,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:07,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:06" (1/3) ... [2023-11-26 10:49:07,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc033fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:07, skipping insertion in model container [2023-11-26 10:49:07,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:07" (2/3) ... [2023-11-26 10:49:07,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc033fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:07, skipping insertion in model container [2023-11-26 10:49:07,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:07" (3/3) ... [2023-11-26 10:49:07,814 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-pthread.i [2023-11-26 10:49:07,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:49:07,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:07,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-26 10:49:07,835 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:49:07,908 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:07,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 158 flow [2023-11-26 10:49:08,020 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2023-11-26 10:49:08,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:49:08,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-26 10:49:08,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 158 flow [2023-11-26 10:49:08,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 158 flow [2023-11-26 10:49:08,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:08,069 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dfb179c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:08,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:49:08,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:08,092 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 10:49:08,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:49:08,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:08,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:08,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 10:49:08,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -445449284, now seen corresponding path program 1 times [2023-11-26 10:49:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859049315] [2023-11-26 10:49:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:08,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859049315] [2023-11-26 10:49:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859049315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:08,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:08,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:08,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553658815] [2023-11-26 10:49:08,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:08,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 77 [2023-11-26 10:49:08,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:08,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 77 [2023-11-26 10:49:08,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:08,467 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-11-26 10:49:08,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:49:08,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 7/76 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2023-11-26 10:49:08,470 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 5 selfloop transitions, 0 changer transitions 0/67 dead transitions. [2023-11-26 10:49:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 148 flow [2023-11-26 10:49:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 10:49:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2023-11-26 10:49:08,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.935064935064935 [2023-11-26 10:49:08,490 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 144 transitions. [2023-11-26 10:49:08,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 144 transitions. [2023-11-26 10:49:08,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:08,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 144 transitions. [2023-11-26 10:49:08,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,501 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,503 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 158 flow. Second operand 2 states and 144 transitions. [2023-11-26 10:49:08,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 148 flow [2023-11-26 10:49:08,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:08,510 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 138 flow [2023-11-26 10:49:08,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, 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=138, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-11-26 10:49:08,516 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2023-11-26 10:49:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 138 flow [2023-11-26 10:49:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:08,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:08,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:08,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 10:49:08,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash -579926155, now seen corresponding path program 1 times [2023-11-26 10:49:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:08,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856107240] [2023-11-26 10:49:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:08,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:08,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:08,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:08,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:49:08,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-26 10:49:08,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-26 10:49:08,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-26 10:49:08,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-26 10:49:08,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-26 10:49:08,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-26 10:49:08,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-26 10:49:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:49:08,618 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 10:49:08,624 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:49:08,624 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:49:08,702 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:08,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 123 transitions, 256 flow [2023-11-26 10:49:08,745 INFO L124 PetriNetUnfolderBase]: 7/147 cut-off events. [2023-11-26 10:49:08,745 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:49:08,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 147 events. 7/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-11-26 10:49:08,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 123 transitions, 256 flow [2023-11-26 10:49:08,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 123 transitions, 256 flow [2023-11-26 10:49:08,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:08,754 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dfb179c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:08,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 10:49:08,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:08,765 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 10:49:08,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:49:08,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:08,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:08,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 10:49:08,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1392247945, now seen corresponding path program 1 times [2023-11-26 10:49:08,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:08,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035444635] [2023-11-26 10:49:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:08,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035444635] [2023-11-26 10:49:08,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035444635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555421591] [2023-11-26 10:49:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:08,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 123 [2023-11-26 10:49:08,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:08,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 123 [2023-11-26 10:49:08,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:08,947 INFO L124 PetriNetUnfolderBase]: 27/347 cut-off events. [2023-11-26 10:49:08,947 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-26 10:49:08,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 347 events. 27/347 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1260 event pairs, 20 based on Foata normal form. 40/371 useless extension candidates. Maximal degree in co-relation 317. Up to 51 conditions per place. [2023-11-26 10:49:08,953 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 10 selfloop transitions, 0 changer transitions 0/110 dead transitions. [2023-11-26 10:49:08,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 250 flow [2023-11-26 10:49:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 10:49:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2023-11-26 10:49:08,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.926829268292683 [2023-11-26 10:49:08,957 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 228 transitions. [2023-11-26 10:49:08,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 228 transitions. [2023-11-26 10:49:08,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:08,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 228 transitions. [2023-11-26 10:49:08,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,963 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,963 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 256 flow. Second operand 2 states and 228 transitions. [2023-11-26 10:49:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 250 flow [2023-11-26 10:49:08,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:08,968 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 230 flow [2023-11-26 10:49:08,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2023-11-26 10:49:08,969 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -9 predicate places. [2023-11-26 10:49:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 230 flow [2023-11-26 10:49:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:08,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:08,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:08,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:08,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 10:49:08,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1273294650, now seen corresponding path program 1 times [2023-11-26 10:49:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:08,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67357064] [2023-11-26 10:49:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:09,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67357064] [2023-11-26 10:49:09,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67357064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:09,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:09,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114477540] [2023-11-26 10:49:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:09,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 123 [2023-11-26 10:49:09,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:09,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 123 [2023-11-26 10:49:09,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:09,311 INFO L124 PetriNetUnfolderBase]: 64/540 cut-off events. [2023-11-26 10:49:09,311 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 10:49:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 540 events. 64/540 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2583 event pairs, 20 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 691. Up to 80 conditions per place. [2023-11-26 10:49:09,317 INFO L140 encePairwiseOnDemand]: 113/123 looper letters, 21 selfloop transitions, 8 changer transitions 0/123 dead transitions. [2023-11-26 10:49:09,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 319 flow [2023-11-26 10:49:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:49:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-11-26 10:49:09,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2023-11-26 10:49:09,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-11-26 10:49:09,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-11-26 10:49:09,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:09,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-11-26 10:49:09,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,328 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 230 flow. Second operand 3 states and 328 transitions. [2023-11-26 10:49:09,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 319 flow [2023-11-26 10:49:09,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 319 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:09,333 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 298 flow [2023-11-26 10:49:09,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2023-11-26 10:49:09,335 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -5 predicate places. [2023-11-26 10:49:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 298 flow [2023-11-26 10:49:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:09,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:49:09,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-26 10:49:09,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -538440815, now seen corresponding path program 1 times [2023-11-26 10:49:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:09,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4680143] [2023-11-26 10:49:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:09,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:09,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:09,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:09,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:49:09,387 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-26 10:49:09,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-26 10:49:09,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-26 10:49:09,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-26 10:49:09,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-26 10:49:09,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-26 10:49:09,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-26 10:49:09,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-26 10:49:09,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-26 10:49:09,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-26 10:49:09,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:49:09,390 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 10:49:09,391 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:49:09,391 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 10:49:09,475 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:09,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 356 flow [2023-11-26 10:49:09,523 INFO L124 PetriNetUnfolderBase]: 10/206 cut-off events. [2023-11-26 10:49:09,524 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 10:49:09,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 206 events. 10/206 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 500 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-11-26 10:49:09,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 169 transitions, 356 flow [2023-11-26 10:49:09,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 356 flow [2023-11-26 10:49:09,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:09,540 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dfb179c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:09,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:49:09,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:09,554 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-26 10:49:09,555 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:49:09,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:09,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:09,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 10:49:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1499936877, now seen corresponding path program 1 times [2023-11-26 10:49:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424980376] [2023-11-26 10:49:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:09,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424980376] [2023-11-26 10:49:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424980376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:09,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:09,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:09,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257133527] [2023-11-26 10:49:09,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:09,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:09,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:09,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 169 [2023-11-26 10:49:09,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:09,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:09,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 169 [2023-11-26 10:49:09,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:10,118 INFO L124 PetriNetUnfolderBase]: 253/1831 cut-off events. [2023-11-26 10:49:10,119 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-11-26 10:49:10,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1831 events. 253/1831 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13904 event pairs, 220 based on Foata normal form. 217/1957 useless extension candidates. Maximal degree in co-relation 1771. Up to 376 conditions per place. [2023-11-26 10:49:10,148 INFO L140 encePairwiseOnDemand]: 158/169 looper letters, 15 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-11-26 10:49:10,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 153 transitions, 354 flow [2023-11-26 10:49:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 10:49:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 312 transitions. [2023-11-26 10:49:10,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2023-11-26 10:49:10,151 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 312 transitions. [2023-11-26 10:49:10,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 312 transitions. [2023-11-26 10:49:10,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:10,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 312 transitions. [2023-11-26 10:49:10,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,157 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,157 INFO L175 Difference]: Start difference. First operand has 169 places, 169 transitions, 356 flow. Second operand 2 states and 312 transitions. [2023-11-26 10:49:10,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 153 transitions, 354 flow [2023-11-26 10:49:10,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 153 transitions, 352 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:10,166 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 322 flow [2023-11-26 10:49:10,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=322, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2023-11-26 10:49:10,170 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -11 predicate places. [2023-11-26 10:49:10,171 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 322 flow [2023-11-26 10:49:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:10,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:49:10,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 10:49:10,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1743933546, now seen corresponding path program 1 times [2023-11-26 10:49:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:10,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725397421] [2023-11-26 10:49:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725397421] [2023-11-26 10:49:10,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725397421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:10,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:10,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872707412] [2023-11-26 10:49:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:10,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 169 [2023-11-26 10:49:10,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:10,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:10,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 169 [2023-11-26 10:49:10,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:11,773 INFO L124 PetriNetUnfolderBase]: 1172/5383 cut-off events. [2023-11-26 10:49:11,774 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-11-26 10:49:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7415 conditions, 5383 events. 1172/5383 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 52330 event pairs, 427 based on Foata normal form. 0/5129 useless extension candidates. Maximal degree in co-relation 7409. Up to 1116 conditions per place. [2023-11-26 10:49:11,848 INFO L140 encePairwiseOnDemand]: 154/169 looper letters, 32 selfloop transitions, 12 changer transitions 0/173 dead transitions. [2023-11-26 10:49:11,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 173 transitions, 460 flow [2023-11-26 10:49:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:49:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-26 10:49:11,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8856015779092702 [2023-11-26 10:49:11,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-26 10:49:11,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-26 10:49:11,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:11,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-26 10:49:11,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:11,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:11,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:11,857 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 322 flow. Second operand 3 states and 449 transitions. [2023-11-26 10:49:11,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 173 transitions, 460 flow [2023-11-26 10:49:11,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 173 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:11,865 INFO L231 Difference]: Finished difference. Result has 162 places, 165 transitions, 424 flow [2023-11-26 10:49:11,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=162, PETRI_TRANSITIONS=165} [2023-11-26 10:49:11,869 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -7 predicate places. [2023-11-26 10:49:11,869 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 165 transitions, 424 flow [2023-11-26 10:49:11,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:11,870 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:49:11,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-26 10:49:11,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1591388776, now seen corresponding path program 1 times [2023-11-26 10:49:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092278243] [2023-11-26 10:49:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:11,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:11,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:11,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:49:11,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 10:49:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-26 10:49:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-26 10:49:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-26 10:49:11,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-26 10:49:11,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-26 10:49:11,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-26 10:49:11,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-26 10:49:11,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-26 10:49:11,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-26 10:49:11,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-26 10:49:11,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-26 10:49:11,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-26 10:49:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:49:11,959 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 10:49:11,959 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:49:11,961 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 10:49:12,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:12,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 215 transitions, 458 flow [2023-11-26 10:49:12,135 INFO L124 PetriNetUnfolderBase]: 13/265 cut-off events. [2023-11-26 10:49:12,136 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 10:49:12,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 265 events. 13/265 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 755 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 214. Up to 10 conditions per place. [2023-11-26 10:49:12,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 215 transitions, 458 flow [2023-11-26 10:49:12,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 215 transitions, 458 flow [2023-11-26 10:49:12,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:12,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dfb179c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:12,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 10:49:12,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:12,153 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 10:49:12,154 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:49:12,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:12,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:12,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 10:49:12,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash 164947626, now seen corresponding path program 1 times [2023-11-26 10:49:12,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:12,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757363245] [2023-11-26 10:49:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757363245] [2023-11-26 10:49:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757363245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:12,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196348903] [2023-11-26 10:49:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:12,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:12,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:12,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 215 [2023-11-26 10:49:12,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 215 transitions, 458 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:12,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:12,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 215 [2023-11-26 10:49:12,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:14,632 INFO L124 PetriNetUnfolderBase]: 1859/9727 cut-off events. [2023-11-26 10:49:14,633 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2023-11-26 10:49:14,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12975 conditions, 9727 events. 1859/9727 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 107592 event pairs, 1720 based on Foata normal form. 1190/10448 useless extension candidates. Maximal degree in co-relation 9789. Up to 2501 conditions per place. [2023-11-26 10:49:14,803 INFO L140 encePairwiseOnDemand]: 201/215 looper letters, 20 selfloop transitions, 0 changer transitions 0/196 dead transitions. [2023-11-26 10:49:14,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 460 flow [2023-11-26 10:49:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 10:49:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 396 transitions. [2023-11-26 10:49:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9209302325581395 [2023-11-26 10:49:14,806 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 396 transitions. [2023-11-26 10:49:14,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 396 transitions. [2023-11-26 10:49:14,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:14,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 396 transitions. [2023-11-26 10:49:14,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 198.0) internal successors, (396), 2 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:14,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:14,811 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:14,811 INFO L175 Difference]: Start difference. First operand has 215 places, 215 transitions, 458 flow. Second operand 2 states and 396 transitions. [2023-11-26 10:49:14,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 460 flow [2023-11-26 10:49:14,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 196 transitions, 454 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:14,818 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 414 flow [2023-11-26 10:49:14,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2023-11-26 10:49:14,821 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, -13 predicate places. [2023-11-26 10:49:14,821 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 414 flow [2023-11-26 10:49:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:49:14,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 10:49:14,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1277129683, now seen corresponding path program 1 times [2023-11-26 10:49:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313498462] [2023-11-26 10:49:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:14,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:14,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313498462] [2023-11-26 10:49:14,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313498462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:14,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:14,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208705610] [2023-11-26 10:49:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:14,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 215 [2023-11-26 10:49:14,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:14,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:14,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 215 [2023-11-26 10:49:14,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:24,464 INFO L124 PetriNetUnfolderBase]: 15875/53826 cut-off events. [2023-11-26 10:49:24,464 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2023-11-26 10:49:24,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77643 conditions, 53826 events. 15875/53826 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 726379 event pairs, 6167 based on Foata normal form. 0/50978 useless extension candidates. Maximal degree in co-relation 77636. Up to 13336 conditions per place. [2023-11-26 10:49:25,498 INFO L140 encePairwiseOnDemand]: 195/215 looper letters, 43 selfloop transitions, 16 changer transitions 0/223 dead transitions. [2023-11-26 10:49:25,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 223 transitions, 601 flow [2023-11-26 10:49:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:49:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-11-26 10:49:25,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8837209302325582 [2023-11-26 10:49:25,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-11-26 10:49:25,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-11-26 10:49:25,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:25,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-11-26 10:49:25,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:25,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:25,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:25,509 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 414 flow. Second operand 3 states and 570 transitions. [2023-11-26 10:49:25,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 223 transitions, 601 flow [2023-11-26 10:49:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 223 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:25,520 INFO L231 Difference]: Finished difference. Result has 206 places, 212 transitions, 550 flow [2023-11-26 10:49:25,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=206, PETRI_TRANSITIONS=212} [2023-11-26 10:49:25,522 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, -9 predicate places. [2023-11-26 10:49:25,523 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 212 transitions, 550 flow [2023-11-26 10:49:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:25,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:25,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:25,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:49:25,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-26 10:49:25,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:25,527 INFO L85 PathProgramCache]: Analyzing trace with hash -310142582, now seen corresponding path program 1 times [2023-11-26 10:49:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987209363] [2023-11-26 10:49:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:25,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:25,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:25,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:25,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:49:25,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-26 10:49:25,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-26 10:49:25,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-26 10:49:25,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-26 10:49:25,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-26 10:49:25,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-26 10:49:25,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-26 10:49:25,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-26 10:49:25,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-26 10:49:25,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-26 10:49:25,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-26 10:49:25,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-26 10:49:25,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-26 10:49:25,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-26 10:49:25,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-26 10:49:25,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-26 10:49:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:49:25,614 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 10:49:25,615 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:49:25,615 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-26 10:49:25,681 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:25,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 261 transitions, 562 flow [2023-11-26 10:49:25,767 INFO L124 PetriNetUnfolderBase]: 16/324 cut-off events. [2023-11-26 10:49:25,767 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-26 10:49:25,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 324 events. 16/324 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1044 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 278. Up to 12 conditions per place. [2023-11-26 10:49:25,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 261 transitions, 562 flow [2023-11-26 10:49:25,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 261 transitions, 562 flow [2023-11-26 10:49:25,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:25,783 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dfb179c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:25,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-26 10:49:25,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:25,789 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-11-26 10:49:25,789 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:49:25,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:25,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:25,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-26 10:49:25,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 54726357, now seen corresponding path program 1 times [2023-11-26 10:49:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236660873] [2023-11-26 10:49:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:25,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:25,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236660873] [2023-11-26 10:49:25,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236660873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:25,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37769346] [2023-11-26 10:49:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:25,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:25,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 261 [2023-11-26 10:49:25,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 562 flow. Second operand has 2 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:25,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 261 [2023-11-26 10:49:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:36,000 INFO L124 PetriNetUnfolderBase]: 12349/51891 cut-off events. [2023-11-26 10:49:36,001 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2023-11-26 10:49:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72015 conditions, 51891 events. 12349/51891 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 730726 event pairs, 11720 based on Foata normal form. 6632/56145 useless extension candidates. Maximal degree in co-relation 54063. Up to 15626 conditions per place. [2023-11-26 10:49:36,887 INFO L140 encePairwiseOnDemand]: 244/261 looper letters, 25 selfloop transitions, 0 changer transitions 0/239 dead transitions. [2023-11-26 10:49:36,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 239 transitions, 568 flow [2023-11-26 10:49:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 10:49:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2023-11-26 10:49:36,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2023-11-26 10:49:36,893 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 480 transitions. [2023-11-26 10:49:36,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 480 transitions. [2023-11-26 10:49:36,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:36,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 480 transitions. [2023-11-26 10:49:36,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.0) internal successors, (480), 2 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:36,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:36,900 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:36,900 INFO L175 Difference]: Start difference. First operand has 261 places, 261 transitions, 562 flow. Second operand 2 states and 480 transitions. [2023-11-26 10:49:36,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 239 transitions, 568 flow [2023-11-26 10:49:36,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 239 transitions, 556 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-26 10:49:36,909 INFO L231 Difference]: Finished difference. Result has 246 places, 239 transitions, 506 flow [2023-11-26 10:49:36,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=506, PETRI_PLACES=246, PETRI_TRANSITIONS=239} [2023-11-26 10:49:36,911 INFO L281 CegarLoopForPetriNet]: 261 programPoint places, -15 predicate places. [2023-11-26 10:49:36,911 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 239 transitions, 506 flow [2023-11-26 10:49:36,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:36,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:36,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:36,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:49:36,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-26 10:49:36,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2092834008, now seen corresponding path program 1 times [2023-11-26 10:49:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162066761] [2023-11-26 10:49:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:36,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:36,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162066761] [2023-11-26 10:49:36,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162066761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:36,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:36,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50538403] [2023-11-26 10:49:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:36,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 261 [2023-11-26 10:49:36,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 239 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:36,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:36,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 261 [2023-11-26 10:49:36,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand