./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ --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 a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:26:05,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:26:05,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-23 22:26:05,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:26:05,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:26:05,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:26:05,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:26:05,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:26:05,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:26:05,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:26:05,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:26:05,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:26:05,338 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:26:05,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:26:05,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:26:05,341 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:26:05,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:26:05,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:26:05,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:26:05,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:26:05,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:26:05,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:26:05,345 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 22:26:05,345 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:26:05,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:26:05,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:26:05,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:26:05,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:26:05,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:26:05,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:26:05,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:26:05,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:26:05,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:26:05,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:26:05,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:26:05,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:26:05,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:26:05,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:26:05,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:26:05,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:26:05,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:26:05,352 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_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b [2023-11-23 22:26:05,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:26:05,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:26:05,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:26:05,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:26:05,717 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:26:05,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i [2023-11-23 22:26:08,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:26:09,055 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:26:09,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i [2023-11-23 22:26:09,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/data/c80c99e99/7e9b7bb4f3994bfe834736ee7cb4bff9/FLAG5a7a976cd [2023-11-23 22:26:09,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/data/c80c99e99/7e9b7bb4f3994bfe834736ee7cb4bff9 [2023-11-23 22:26:09,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:26:09,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:26:09,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:26:09,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:26:09,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:26:09,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2039159a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09, skipping insertion in model container [2023-11-23 22:26:09,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:26:09,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:26:09,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:26:09,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:26:09,712 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:26:09,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09 WrapperNode [2023-11-23 22:26:09,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:26:09,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:26:09,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:26:09,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:26:09,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,836 INFO L138 Inliner]: procedures = 172, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2023-11-23 22:26:09,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:26:09,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:26:09,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:26:09,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:26:09,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:26:09,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:26:09,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:26:09,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:26:09,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (1/1) ... [2023-11-23 22:26:09,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:26:09,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:09,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:26:10,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985a1e98-3071-4908-b9b7-0ed3fd5cda23/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:26:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:26:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-23 22:26:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-23 22:26:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:26:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:26:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:26:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:26:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:26:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:26:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:26:10,040 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:26:10,255 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:26:10,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:26:10,894 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:26:11,394 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:26:11,394 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 22:26:11,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:11 BoogieIcfgContainer [2023-11-23 22:26:11,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:26:11,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:26:11,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:26:11,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:26:11,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:26:09" (1/3) ... [2023-11-23 22:26:11,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569a8b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:11, skipping insertion in model container [2023-11-23 22:26:11,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:09" (2/3) ... [2023-11-23 22:26:11,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569a8b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:11, skipping insertion in model container [2023-11-23 22:26:11,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:11" (3/3) ... [2023-11-23 22:26:11,407 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas-race.i [2023-11-23 22:26:11,417 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:26:11,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:26:11,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 22:26:11,429 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:26:11,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:26:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 138 transitions, 280 flow [2023-11-23 22:26:11,740 INFO L124 PetriNetUnfolderBase]: 11/149 cut-off events. [2023-11-23 22:26:11,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:26:11,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 149 events. 11/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 337 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-11-23 22:26:11,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 138 transitions, 280 flow [2023-11-23 22:26:11,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 138 transitions, 280 flow [2023-11-23 22:26:11,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:26:11,782 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;@192ffd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:26:11,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-23 22:26:11,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:26:11,809 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-23 22:26:11,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:26:11,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:11,810 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, 1] [2023-11-23 22:26:11,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-23 22:26:11,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1405626418, now seen corresponding path program 1 times [2023-11-23 22:26:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983305346] [2023-11-23 22:26:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:11,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:26:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:12,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:26:12,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:26:12,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2023-11-23 22:26:12,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2023-11-23 22:26:12,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2023-11-23 22:26:12,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2023-11-23 22:26:12,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2023-11-23 22:26:12,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2023-11-23 22:26:12,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2023-11-23 22:26:12,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2023-11-23 22:26:12,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2023-11-23 22:26:12,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2023-11-23 22:26:12,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2023-11-23 22:26:12,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2023-11-23 22:26:12,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2023-11-23 22:26:12,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2023-11-23 22:26:12,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2023-11-23 22:26:12,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2023-11-23 22:26:12,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2023-11-23 22:26:12,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2023-11-23 22:26:12,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2023-11-23 22:26:12,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2023-11-23 22:26:12,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2023-11-23 22:26:12,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2023-11-23 22:26:12,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2023-11-23 22:26:12,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2023-11-23 22:26:12,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2023-11-23 22:26:12,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2023-11-23 22:26:12,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2023-11-23 22:26:12,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2023-11-23 22:26:12,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2023-11-23 22:26:12,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2023-11-23 22:26:12,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2023-11-23 22:26:12,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2023-11-23 22:26:12,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2023-11-23 22:26:12,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2023-11-23 22:26:12,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2023-11-23 22:26:12,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2023-11-23 22:26:12,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2023-11-23 22:26:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:26:12,094 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:26:12,098 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:26:12,099 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 22:26:12,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:26:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 244 transitions, 498 flow [2023-11-23 22:26:12,405 INFO L124 PetriNetUnfolderBase]: 21/268 cut-off events. [2023-11-23 22:26:12,405 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:26:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 268 events. 21/268 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 223. Up to 6 conditions per place. [2023-11-23 22:26:12,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 244 transitions, 498 flow [2023-11-23 22:26:12,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 244 transitions, 498 flow [2023-11-23 22:26:12,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:26:12,420 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;@192ffd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:26:12,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-11-23 22:26:12,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:26:12,434 INFO L124 PetriNetUnfolderBase]: 3/79 cut-off events. [2023-11-23 22:26:12,434 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:26:12,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:12,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:12,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-11-23 22:26:12,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1459881071, now seen corresponding path program 1 times [2023-11-23 22:26:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179034756] [2023-11-23 22:26:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179034756] [2023-11-23 22:26:12,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179034756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:12,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:26:12,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:26:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919679428] [2023-11-23 22:26:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:26:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:26:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:26:12,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 244 [2023-11-23 22:26:12,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 244 transitions, 498 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 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) [2023-11-23 22:26:12,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:26:12,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 244 [2023-11-23 22:26:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:26:13,272 INFO L124 PetriNetUnfolderBase]: 72/633 cut-off events. [2023-11-23 22:26:13,272 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-23 22:26:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 633 events. 72/633 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3541 event pairs, 20 based on Foata normal form. 51/604 useless extension candidates. Maximal degree in co-relation 196. Up to 73 conditions per place. [2023-11-23 22:26:13,284 INFO L140 encePairwiseOnDemand]: 210/244 looper letters, 14 selfloop transitions, 0 changer transitions 0/205 dead transitions. [2023-11-23 22:26:13,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 205 transitions, 448 flow [2023-11-23 22:26:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:26:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:26:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 440 transitions. [2023-11-23 22:26:13,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9016393442622951 [2023-11-23 22:26:13,303 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 440 transitions. [2023-11-23 22:26:13,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 440 transitions. [2023-11-23 22:26:13,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:26:13,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 440 transitions. [2023-11-23 22:26:13,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 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) [2023-11-23 22:26:13,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-11-23 22:26:13,321 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-11-23 22:26:13,323 INFO L175 Difference]: Start difference. First operand has 230 places, 244 transitions, 498 flow. Second operand 2 states and 440 transitions. [2023-11-23 22:26:13,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 205 transitions, 448 flow [2023-11-23 22:26:13,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 205 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:26:13,334 INFO L231 Difference]: Finished difference. Result has 197 places, 205 transitions, 420 flow [2023-11-23 22:26:13,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=420, PETRI_PLACES=197, PETRI_TRANSITIONS=205} [2023-11-23 22:26:13,340 INFO L281 CegarLoopForPetriNet]: 230 programPoint places, -33 predicate places. [2023-11-23 22:26:13,341 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 205 transitions, 420 flow [2023-11-23 22:26:13,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 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) [2023-11-23 22:26:13,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:13,342 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, 1] [2023-11-23 22:26:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:26:13,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-11-23 22:26:13,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1276645595, now seen corresponding path program 1 times [2023-11-23 22:26:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:13,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703107506] [2023-11-23 22:26:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:13,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:26:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:13,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:26:13,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:26:13,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2023-11-23 22:26:13,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 55 remaining) [2023-11-23 22:26:13,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 55 remaining) [2023-11-23 22:26:13,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 55 remaining) [2023-11-23 22:26:13,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 55 remaining) [2023-11-23 22:26:13,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 55 remaining) [2023-11-23 22:26:13,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 55 remaining) [2023-11-23 22:26:13,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 55 remaining) [2023-11-23 22:26:13,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 55 remaining) [2023-11-23 22:26:13,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (45 of 55 remaining) [2023-11-23 22:26:13,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (44 of 55 remaining) [2023-11-23 22:26:13,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (43 of 55 remaining) [2023-11-23 22:26:13,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 55 remaining) [2023-11-23 22:26:13,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (41 of 55 remaining) [2023-11-23 22:26:13,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (40 of 55 remaining) [2023-11-23 22:26:13,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (39 of 55 remaining) [2023-11-23 22:26:13,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (38 of 55 remaining) [2023-11-23 22:26:13,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 55 remaining) [2023-11-23 22:26:13,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 55 remaining) [2023-11-23 22:26:13,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 55 remaining) [2023-11-23 22:26:13,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 55 remaining) [2023-11-23 22:26:13,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 55 remaining) [2023-11-23 22:26:13,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 55 remaining) [2023-11-23 22:26:13,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 55 remaining) [2023-11-23 22:26:13,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 55 remaining) [2023-11-23 22:26:13,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 55 remaining) [2023-11-23 22:26:13,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 55 remaining) [2023-11-23 22:26:13,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 55 remaining) [2023-11-23 22:26:13,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 55 remaining) [2023-11-23 22:26:13,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 55 remaining) [2023-11-23 22:26:13,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 55 remaining) [2023-11-23 22:26:13,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 55 remaining) [2023-11-23 22:26:13,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 55 remaining) [2023-11-23 22:26:13,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 55 remaining) [2023-11-23 22:26:13,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 55 remaining) [2023-11-23 22:26:13,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 55 remaining) [2023-11-23 22:26:13,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 55 remaining) [2023-11-23 22:26:13,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 55 remaining) [2023-11-23 22:26:13,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 55 remaining) [2023-11-23 22:26:13,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 55 remaining) [2023-11-23 22:26:13,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 55 remaining) [2023-11-23 22:26:13,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 55 remaining) [2023-11-23 22:26:13,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 55 remaining) [2023-11-23 22:26:13,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 55 remaining) [2023-11-23 22:26:13,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 55 remaining) [2023-11-23 22:26:13,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 55 remaining) [2023-11-23 22:26:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 55 remaining) [2023-11-23 22:26:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 55 remaining) [2023-11-23 22:26:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 55 remaining) [2023-11-23 22:26:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 55 remaining) [2023-11-23 22:26:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 55 remaining) [2023-11-23 22:26:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 55 remaining) [2023-11-23 22:26:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 55 remaining) [2023-11-23 22:26:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 55 remaining) [2023-11-23 22:26:13,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 55 remaining) [2023-11-23 22:26:13,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:26:13,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 22:26:13,439 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:26:13,439 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 22:26:13,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:26:13,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 350 transitions, 718 flow [2023-11-23 22:26:13,851 INFO L124 PetriNetUnfolderBase]: 31/387 cut-off events. [2023-11-23 22:26:13,851 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 22:26:13,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1778 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 328. Up to 8 conditions per place. [2023-11-23 22:26:13,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 350 transitions, 718 flow [2023-11-23 22:26:13,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 350 transitions, 718 flow [2023-11-23 22:26:13,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:26:13,875 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;@192ffd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:26:13,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-11-23 22:26:13,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:26:13,887 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-11-23 22:26:13,887 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 22:26:13,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:13,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:13,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-23 22:26:13,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash 843338056, now seen corresponding path program 1 times [2023-11-23 22:26:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:13,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854531283] [2023-11-23 22:26:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854531283] [2023-11-23 22:26:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854531283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:26:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:26:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957861485] [2023-11-23 22:26:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:26:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:14,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:26:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:26:14,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 350 [2023-11-23 22:26:14,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 350 transitions, 718 flow. Second operand has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 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) [2023-11-23 22:26:14,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:26:14,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 350 [2023-11-23 22:26:14,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:26:15,719 INFO L124 PetriNetUnfolderBase]: 547/3353 cut-off events. [2023-11-23 22:26:15,719 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-11-23 22:26:15,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 3353 events. 547/3353 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30680 event pairs, 220 based on Foata normal form. 316/3192 useless extension candidates. Maximal degree in co-relation 717. Up to 548 conditions per place. [2023-11-23 22:26:15,773 INFO L140 encePairwiseOnDemand]: 300/350 looper letters, 21 selfloop transitions, 0 changer transitions 0/295 dead transitions. [2023-11-23 22:26:15,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 295 transitions, 650 flow [2023-11-23 22:26:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:26:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:26:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 629 transitions. [2023-11-23 22:26:15,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8985714285714286 [2023-11-23 22:26:15,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 629 transitions. [2023-11-23 22:26:15,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 629 transitions. [2023-11-23 22:26:15,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:26:15,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 629 transitions. [2023-11-23 22:26:15,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 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) [2023-11-23 22:26:15,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2023-11-23 22:26:15,797 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2023-11-23 22:26:15,797 INFO L175 Difference]: Start difference. First operand has 329 places, 350 transitions, 718 flow. Second operand 2 states and 629 transitions. [2023-11-23 22:26:15,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 295 transitions, 650 flow [2023-11-23 22:26:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 648 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 22:26:15,814 INFO L231 Difference]: Finished difference. Result has 282 places, 295 transitions, 606 flow [2023-11-23 22:26:15,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=606, PETRI_PLACES=282, PETRI_TRANSITIONS=295} [2023-11-23 22:26:15,816 INFO L281 CegarLoopForPetriNet]: 329 programPoint places, -47 predicate places. [2023-11-23 22:26:15,817 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 295 transitions, 606 flow [2023-11-23 22:26:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 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) [2023-11-23 22:26:15,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:15,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:15,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:26:15,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-23 22:26:15,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -298727822, now seen corresponding path program 1 times [2023-11-23 22:26:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:15,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484435707] [2023-11-23 22:26:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484435707] [2023-11-23 22:26:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484435707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:16,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:26:16,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:26:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067577520] [2023-11-23 22:26:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:16,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:26:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:26:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:26:17,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 350 [2023-11-23 22:26:17,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 295 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 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) [2023-11-23 22:26:17,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:26:17,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 350 [2023-11-23 22:26:17,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:26:32,496 INFO L124 PetriNetUnfolderBase]: 25089/72259 cut-off events. [2023-11-23 22:26:32,497 INFO L125 PetriNetUnfolderBase]: For 1420/1420 co-relation queries the response was YES. [2023-11-23 22:26:32,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107893 conditions, 72259 events. 25089/72259 cut-off events. For 1420/1420 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 1016225 event pairs, 2316 based on Foata normal form. 0/62000 useless extension candidates. Maximal degree in co-relation 107887. Up to 12309 conditions per place. [2023-11-23 22:26:33,269 INFO L140 encePairwiseOnDemand]: 302/350 looper letters, 180 selfloop transitions, 96 changer transitions 0/513 dead transitions. [2023-11-23 22:26:33,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 513 transitions, 1634 flow [2023-11-23 22:26:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:26:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:26:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2023-11-23 22:26:33,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8257142857142857 [2023-11-23 22:26:33,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2023-11-23 22:26:33,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2023-11-23 22:26:33,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:26:33,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2023-11-23 22:26:33,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 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) [2023-11-23 22:26:33,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 350.0) internal successors, (2450), 7 states have internal predecessors, (2450), 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) [2023-11-23 22:26:33,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 350.0) internal successors, (2450), 7 states have internal predecessors, (2450), 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) [2023-11-23 22:26:33,296 INFO L175 Difference]: Start difference. First operand has 282 places, 295 transitions, 606 flow. Second operand 6 states and 1734 transitions. [2023-11-23 22:26:33,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 513 transitions, 1634 flow [2023-11-23 22:26:33,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 513 transitions, 1634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:26:33,315 INFO L231 Difference]: Finished difference. Result has 292 places, 391 transitions, 1278 flow [2023-11-23 22:26:33,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1278, PETRI_PLACES=292, PETRI_TRANSITIONS=391} [2023-11-23 22:26:33,319 INFO L281 CegarLoopForPetriNet]: 329 programPoint places, -37 predicate places. [2023-11-23 22:26:33,319 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 391 transitions, 1278 flow [2023-11-23 22:26:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 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) [2023-11-23 22:26:33,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:33,321 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, 1] [2023-11-23 22:26:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:26:33,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-23 22:26:33,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash -453982895, now seen corresponding path program 1 times [2023-11-23 22:26:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812679875] [2023-11-23 22:26:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:33,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:26:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:33,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:26:33,408 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:26:33,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (72 of 73 remaining) [2023-11-23 22:26:33,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (71 of 73 remaining) [2023-11-23 22:26:33,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (70 of 73 remaining) [2023-11-23 22:26:33,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (69 of 73 remaining) [2023-11-23 22:26:33,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (68 of 73 remaining) [2023-11-23 22:26:33,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (67 of 73 remaining) [2023-11-23 22:26:33,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (66 of 73 remaining) [2023-11-23 22:26:33,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (65 of 73 remaining) [2023-11-23 22:26:33,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (64 of 73 remaining) [2023-11-23 22:26:33,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (63 of 73 remaining) [2023-11-23 22:26:33,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (62 of 73 remaining) [2023-11-23 22:26:33,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (61 of 73 remaining) [2023-11-23 22:26:33,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (60 of 73 remaining) [2023-11-23 22:26:33,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (59 of 73 remaining) [2023-11-23 22:26:33,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (58 of 73 remaining) [2023-11-23 22:26:33,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (57 of 73 remaining) [2023-11-23 22:26:33,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (56 of 73 remaining) [2023-11-23 22:26:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (55 of 73 remaining) [2023-11-23 22:26:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (54 of 73 remaining) [2023-11-23 22:26:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 73 remaining) [2023-11-23 22:26:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 73 remaining) [2023-11-23 22:26:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 73 remaining) [2023-11-23 22:26:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 73 remaining) [2023-11-23 22:26:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 73 remaining) [2023-11-23 22:26:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 73 remaining) [2023-11-23 22:26:33,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 73 remaining) [2023-11-23 22:26:33,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 73 remaining) [2023-11-23 22:26:33,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (45 of 73 remaining) [2023-11-23 22:26:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (44 of 73 remaining) [2023-11-23 22:26:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (43 of 73 remaining) [2023-11-23 22:26:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 73 remaining) [2023-11-23 22:26:33,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (41 of 73 remaining) [2023-11-23 22:26:33,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (40 of 73 remaining) [2023-11-23 22:26:33,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (39 of 73 remaining) [2023-11-23 22:26:33,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (38 of 73 remaining) [2023-11-23 22:26:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 73 remaining) [2023-11-23 22:26:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 73 remaining) [2023-11-23 22:26:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 73 remaining) [2023-11-23 22:26:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 73 remaining) [2023-11-23 22:26:33,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 73 remaining) [2023-11-23 22:26:33,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 73 remaining) [2023-11-23 22:26:33,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 73 remaining) [2023-11-23 22:26:33,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 73 remaining) [2023-11-23 22:26:33,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 73 remaining) [2023-11-23 22:26:33,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 73 remaining) [2023-11-23 22:26:33,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 73 remaining) [2023-11-23 22:26:33,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 73 remaining) [2023-11-23 22:26:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 73 remaining) [2023-11-23 22:26:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 73 remaining) [2023-11-23 22:26:33,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 73 remaining) [2023-11-23 22:26:33,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 73 remaining) [2023-11-23 22:26:33,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 73 remaining) [2023-11-23 22:26:33,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 73 remaining) [2023-11-23 22:26:33,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 73 remaining) [2023-11-23 22:26:33,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 73 remaining) [2023-11-23 22:26:33,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 73 remaining) [2023-11-23 22:26:33,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 73 remaining) [2023-11-23 22:26:33,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 73 remaining) [2023-11-23 22:26:33,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 73 remaining) [2023-11-23 22:26:33,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 73 remaining) [2023-11-23 22:26:33,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 73 remaining) [2023-11-23 22:26:33,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 73 remaining) [2023-11-23 22:26:33,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 73 remaining) [2023-11-23 22:26:33,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 73 remaining) [2023-11-23 22:26:33,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 73 remaining) [2023-11-23 22:26:33,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 73 remaining) [2023-11-23 22:26:33,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 73 remaining) [2023-11-23 22:26:33,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 73 remaining) [2023-11-23 22:26:33,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 73 remaining) [2023-11-23 22:26:33,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 73 remaining) [2023-11-23 22:26:33,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 73 remaining) [2023-11-23 22:26:33,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 73 remaining) [2023-11-23 22:26:33,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 73 remaining) [2023-11-23 22:26:33,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:26:33,437 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 22:26:33,438 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:26:33,439 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 22:26:33,721 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:26:33,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 456 transitions, 940 flow [2023-11-23 22:26:33,899 INFO L124 PetriNetUnfolderBase]: 41/506 cut-off events. [2023-11-23 22:26:33,899 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-23 22:26:33,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 506 events. 41/506 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2541 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 433. Up to 10 conditions per place. [2023-11-23 22:26:33,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 456 transitions, 940 flow [2023-11-23 22:26:33,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 456 transitions, 940 flow [2023-11-23 22:26:33,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:26:33,923 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;@192ffd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:26:33,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-23 22:26:33,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:26:33,931 INFO L124 PetriNetUnfolderBase]: 3/79 cut-off events. [2023-11-23 22:26:33,931 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:26:33,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:33,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:33,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2023-11-23 22:26:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash 394790696, now seen corresponding path program 1 times [2023-11-23 22:26:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:33,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714231949] [2023-11-23 22:26:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:33,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714231949] [2023-11-23 22:26:33,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714231949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:33,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:26:33,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:26:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629697625] [2023-11-23 22:26:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:33,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:26:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:26:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:26:33,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 456 [2023-11-23 22:26:34,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 456 transitions, 940 flow. Second operand has 2 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 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) [2023-11-23 22:26:34,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:26:34,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 456 [2023-11-23 22:26:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:26:39,442 INFO L124 PetriNetUnfolderBase]: 3672/17703 cut-off events. [2023-11-23 22:26:39,442 INFO L125 PetriNetUnfolderBase]: For 2166/2166 co-relation queries the response was YES. [2023-11-23 22:26:39,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22123 conditions, 17703 events. 3672/17703 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 218287 event pairs, 1720 based on Foata normal form. 1891/16880 useless extension candidates. Maximal degree in co-relation 4032. Up to 3673 conditions per place. [2023-11-23 22:26:39,739 INFO L140 encePairwiseOnDemand]: 390/456 looper letters, 28 selfloop transitions, 0 changer transitions 0/385 dead transitions. [2023-11-23 22:26:39,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 385 transitions, 854 flow [2023-11-23 22:26:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:26:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:26:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 818 transitions. [2023-11-23 22:26:39,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8969298245614035 [2023-11-23 22:26:39,745 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 818 transitions. [2023-11-23 22:26:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 818 transitions. [2023-11-23 22:26:39,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:26:39,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 818 transitions. [2023-11-23 22:26:39,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 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) [2023-11-23 22:26:39,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 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) [2023-11-23 22:26:39,754 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 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) [2023-11-23 22:26:39,754 INFO L175 Difference]: Start difference. First operand has 428 places, 456 transitions, 940 flow. Second operand 2 states and 818 transitions. [2023-11-23 22:26:39,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 385 transitions, 854 flow [2023-11-23 22:26:39,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 385 transitions, 848 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-23 22:26:39,772 INFO L231 Difference]: Finished difference. Result has 367 places, 385 transitions, 792 flow [2023-11-23 22:26:39,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=792, PETRI_PLACES=367, PETRI_TRANSITIONS=385} [2023-11-23 22:26:39,774 INFO L281 CegarLoopForPetriNet]: 428 programPoint places, -61 predicate places. [2023-11-23 22:26:39,775 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 385 transitions, 792 flow [2023-11-23 22:26:39,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 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) [2023-11-23 22:26:39,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:39,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:39,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:26:39,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2023-11-23 22:26:39,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2112819346, now seen corresponding path program 1 times [2023-11-23 22:26:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:39,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678962862] [2023-11-23 22:26:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:40,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:40,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678962862] [2023-11-23 22:26:40,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678962862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:40,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:26:40,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:26:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352995335] [2023-11-23 22:26:40,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:40,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:26:40,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:26:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:26:41,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 456 [2023-11-23 22:26:41,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 385 transitions, 792 flow. Second operand has 6 states, 6 states have (on average 314.1666666666667) internal successors, (1885), 6 states have internal predecessors, (1885), 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) [2023-11-23 22:26:41,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:26:41,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 456 [2023-11-23 22:26:41,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand