./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu --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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:10,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:10,742 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:43:10,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:10,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:10,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:10,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:10,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:10,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:10,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:10,804 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:10,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:10,805 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:10,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:10,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:10,808 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:10,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:10,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:10,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:10,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:10,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:10,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:10,812 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:43:10,813 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:10,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:10,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:10,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:10,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:10,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:10,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:10,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:10,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:10,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:10,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:10,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:10,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:10,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:10,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:10,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:10,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:10,821 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:10,822 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_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2023-11-19 07:43:11,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:11,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:11,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:11,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:11,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:11,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2023-11-19 07:43:14,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:14,562 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:14,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2023-11-19 07:43:14,583 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/data/80ef5c6bd/b13a44e078554b08b419db1d761b0be9/FLAGd2d12e1b5 [2023-11-19 07:43:14,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/data/80ef5c6bd/b13a44e078554b08b419db1d761b0be9 [2023-11-19 07:43:14,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:14,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:14,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:14,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:14,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:14,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:14" (1/1) ... [2023-11-19 07:43:14,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4fe4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:14, skipping insertion in model container [2023-11-19 07:43:14,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:14" (1/1) ... [2023-11-19 07:43:14,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:15,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:15,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:15,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:15,274 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:15,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15 WrapperNode [2023-11-19 07:43:15,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:15,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:15,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:15,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:15,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,393 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2023-11-19 07:43:15,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:15,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:15,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:15,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:15,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:15,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:15,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:15,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:15,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:15,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:15,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:15,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c44560b-44fe-42a0-9fe8-5714a0db22c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:43:15,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:43:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:15,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:15,572 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:43:15,722 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:15,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:16,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:16,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:16,332 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:43:16,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:16 BoogieIcfgContainer [2023-11-19 07:43:16,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:16,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:16,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:16,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:16,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:14" (1/3) ... [2023-11-19 07:43:16,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655da98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:16, skipping insertion in model container [2023-11-19 07:43:16,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (2/3) ... [2023-11-19 07:43:16,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655da98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:16, skipping insertion in model container [2023-11-19 07:43:16,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:16" (3/3) ... [2023-11-19 07:43:16,350 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2023-11-19 07:43:16,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:16,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:16,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:43:16,369 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:16,450 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:16,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,635 INFO L124 PetriNetUnfolderBase]: 10/113 cut-off events. [2023-11-19 07:43:16,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 10/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:43:16,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:16,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 102 transitions, 208 flow [2023-11-19 07:43:16,718 INFO L124 PetriNetUnfolderBase]: 10/113 cut-off events. [2023-11-19 07:43:16,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:16,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 10/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:43:16,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 2100 [2023-11-19 07:43:24,731 INFO L134 LiptonReduction]: Checked pairs total: 2000 [2023-11-19 07:43:24,732 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-11-19 07:43:24,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:24,756 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;@448f822f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:24,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:43:24,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:24,761 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:43:24,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:24,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:24,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:24,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 07:43:24,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 525570727, now seen corresponding path program 1 times [2023-11-19 07:43:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721929761] [2023-11-19 07:43:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721929761] [2023-11-19 07:43:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721929761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:25,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822886084] [2023-11-19 07:43:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:25,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:43:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:43:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:25,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 222 [2023-11-19 07:43:25,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 20 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:25,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:25,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 222 [2023-11-19 07:43:25,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:25,186 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2023-11-19 07:43:25,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:25,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 38 events. 16/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 10 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 66. Up to 37 conditions per place. [2023-11-19 07:43:25,189 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:43:25,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 50 flow [2023-11-19 07:43:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:43:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:43:25,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2023-11-19 07:43:25,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2023-11-19 07:43:25,214 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2023-11-19 07:43:25,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2023-11-19 07:43:25,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:25,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2023-11-19 07:43:25,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 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) [2023-11-19 07:43:25,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2023-11-19 07:43:25,237 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2023-11-19 07:43:25,239 INFO L175 Difference]: Start difference. First operand has 20 places, 20 transitions, 44 flow. Second operand 2 states and 193 transitions. [2023-11-19 07:43:25,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 50 flow [2023-11-19 07:43:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:25,245 INFO L231 Difference]: Finished difference. Result has 14 places, 12 transitions, 28 flow [2023-11-19 07:43:25,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2023-11-19 07:43:25,253 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -6 predicate places. [2023-11-19 07:43:25,253 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 28 flow [2023-11-19 07:43:25,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:25,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:25,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:43:25,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:25,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 07:43:25,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash -887225027, now seen corresponding path program 1 times [2023-11-19 07:43:25,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:25,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459661447] [2023-11-19 07:43:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:25,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:25,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:43:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:25,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:43:25,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:43:25,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 07:43:25,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-19 07:43:25,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-19 07:43:25,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-19 07:43:25,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-19 07:43:25,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-19 07:43:25,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-19 07:43:25,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-19 07:43:25,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-19 07:43:25,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-19 07:43:25,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-19 07:43:25,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-19 07:43:25,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-19 07:43:25,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:25,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:43:25,364 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:43:25,364 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:43:25,437 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:25,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,537 INFO L124 PetriNetUnfolderBase]: 19/202 cut-off events. [2023-11-19 07:43:25,538 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:43:25,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 202 events. 19/202 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 509 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:43:25,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:25,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 178 transitions, 366 flow [2023-11-19 07:43:25,637 INFO L124 PetriNetUnfolderBase]: 19/202 cut-off events. [2023-11-19 07:43:25,638 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:43:25,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 202 events. 19/202 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 509 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:43:25,656 INFO L119 LiptonReduction]: Number of co-enabled transitions 15600 [2023-11-19 07:43:47,835 INFO L134 LiptonReduction]: Checked pairs total: 32882 [2023-11-19 07:43:47,836 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-19 07:43:47,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:47,840 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;@448f822f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:47,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:43:47,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:47,849 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 07:43:47,851 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:43:47,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:47,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:47,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:43:47,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1996479223, now seen corresponding path program 1 times [2023-11-19 07:43:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:47,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422407275] [2023-11-19 07:43:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422407275] [2023-11-19 07:43:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422407275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116845290] [2023-11-19 07:43:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:48,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 363 [2023-11-19 07:43:48,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 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) [2023-11-19 07:43:48,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:48,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 363 [2023-11-19 07:43:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:49,392 INFO L124 PetriNetUnfolderBase]: 724/1375 cut-off events. [2023-11-19 07:43:49,393 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:43:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 1375 events. 724/1375 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7966 event pairs, 175 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 1798. Up to 520 conditions per place. [2023-11-19 07:43:49,405 INFO L140 encePairwiseOnDemand]: 338/363 looper letters, 116 selfloop transitions, 24 changer transitions 0/155 dead transitions. [2023-11-19 07:43:49,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 155 transitions, 620 flow [2023-11-19 07:43:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1019 transitions. [2023-11-19 07:43:49,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46786042240587694 [2023-11-19 07:43:49,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1019 transitions. [2023-11-19 07:43:49,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1019 transitions. [2023-11-19 07:43:49,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:49,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1019 transitions. [2023-11-19 07:43:49,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 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) [2023-11-19 07:43:49,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 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) [2023-11-19 07:43:49,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 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) [2023-11-19 07:43:49,473 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 122 flow. Second operand 6 states and 1019 transitions. [2023-11-19 07:43:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 155 transitions, 620 flow [2023-11-19 07:43:49,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 155 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:49,480 INFO L231 Difference]: Finished difference. Result has 56 places, 69 transitions, 272 flow [2023-11-19 07:43:49,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=69} [2023-11-19 07:43:49,482 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-11-19 07:43:49,482 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 69 transitions, 272 flow [2023-11-19 07:43:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 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) [2023-11-19 07:43:49,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:49,483 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:43:49,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:49,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:43:49,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1963570005, now seen corresponding path program 1 times [2023-11-19 07:43:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513682604] [2023-11-19 07:43:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:49,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:43:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:43:49,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:43:49,527 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:43:49,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:43:49,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:43:49,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:43:49,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:43:49,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:43:49,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:43:49,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:43:49,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:43:49,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:43:49,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:43:49,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 07:43:49,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 07:43:49,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:43:49,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:43:49,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:43:49,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:43:49,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:43:49,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:43:49,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:43:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:49,532 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:43:49,533 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:43:49,533 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:43:49,598 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,665 INFO L124 PetriNetUnfolderBase]: 28/291 cut-off events. [2023-11-19 07:43:49,666 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:43:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 28/291 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 238. Up to 8 conditions per place. [2023-11-19 07:43:49,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,677 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:49,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 254 transitions, 526 flow [2023-11-19 07:43:49,738 INFO L124 PetriNetUnfolderBase]: 28/291 cut-off events. [2023-11-19 07:43:49,738 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:43:49,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 28/291 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 238. Up to 8 conditions per place. [2023-11-19 07:43:49,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 40500 [2023-11-19 07:44:13,583 INFO L134 LiptonReduction]: Checked pairs total: 85485 [2023-11-19 07:44:13,583 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-11-19 07:44:13,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:13,587 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;@448f822f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:13,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 07:44:13,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:13,593 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 07:44:13,593 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:44:13,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:13,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:13,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:44:13,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash -680636759, now seen corresponding path program 1 times [2023-11-19 07:44:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634294331] [2023-11-19 07:44:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:13,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634294331] [2023-11-19 07:44:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634294331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:44:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658871883] [2023-11-19 07:44:13,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 509 [2023-11-19 07:44:14,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 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) [2023-11-19 07:44:14,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:14,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 509 [2023-11-19 07:44:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand