./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx --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 e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:06:47,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:06:47,096 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:06:47,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:06:47,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:06:47,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:06:47,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:06:47,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:06:47,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:06:47,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:06:47,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:06:47,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:06:47,137 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:06:47,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:06:47,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:06:47,139 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:06:47,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:06:47,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:06:47,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:06:47,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:06:47,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:06:47,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:06:47,144 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:06:47,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:06:47,146 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:06:47,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:06:47,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:06:47,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:06:47,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:06:47,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:06:47,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:47,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:06:47,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:06:47,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:06:47,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:06:47,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:06:47,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:06:47,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:06:47,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:06:47,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:06:47,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:06:47,157 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_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 [2023-11-21 22:06:47,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:06:47,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:06:47,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:06:47,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:06:47,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:06:47,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2023-11-21 22:06:50,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:06:51,033 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:06:51,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2023-11-21 22:06:51,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/data/25d4a6aba/026449448f564500866b452f01a7b511/FLAG40b3d01d9 [2023-11-21 22:06:51,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/data/25d4a6aba/026449448f564500866b452f01a7b511 [2023-11-21 22:06:51,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:06:51,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:06:51,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:51,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:06:51,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:06:51,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d15388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51, skipping insertion in model container [2023-11-21 22:06:51,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:06:51,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:51,521 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:06:51,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:51,664 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:06:51,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51 WrapperNode [2023-11-21 22:06:51,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:51,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:51,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:06:51,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:06:51,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,753 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-11-21 22:06:51,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:51,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:06:51,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:06:51,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:06:51,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:06:51,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:06:51,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:06:51,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:06:51,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (1/1) ... [2023-11-21 22:06:51,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:51,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:51,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:06:51,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2facf3-da62-40f1-908a-02f31ce9541d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:06:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 22:06:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:06:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:06:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-21 22:06:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-21 22:06:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:06:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:06:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:06:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:06:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:06:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:06:51,912 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:06:52,053 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:06:52,056 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:06:52,342 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:06:52,353 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:06:52,354 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:06:52,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:52 BoogieIcfgContainer [2023-11-21 22:06:52,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:06:52,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:06:52,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:06:52,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:06:52,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:06:51" (1/3) ... [2023-11-21 22:06:52,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f1979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:52, skipping insertion in model container [2023-11-21 22:06:52,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:51" (2/3) ... [2023-11-21 22:06:52,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f1979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:52, skipping insertion in model container [2023-11-21 22:06:52,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:52" (3/3) ... [2023-11-21 22:06:52,406 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2023-11-21 22:06:52,415 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:06:52,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:06:52,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 22:06:52,454 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:06:52,580 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:06:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 117 transitions, 241 flow [2023-11-21 22:06:52,719 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-21 22:06:52,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:06:52,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-11-21 22:06:52,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 117 transitions, 241 flow [2023-11-21 22:06:52,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 117 transitions, 241 flow [2023-11-21 22:06:52,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:06:52,763 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;@3ba7e074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:06:52,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:06:52,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:06:52,795 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:06:52,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:06:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:52,796 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] [2023-11-21 22:06:52,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:06:52,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1675524990, now seen corresponding path program 1 times [2023-11-21 22:06:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226002674] [2023-11-21 22:06:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226002674] [2023-11-21 22:06:53,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226002674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:53,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:06:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718539944] [2023-11-21 22:06:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:06:53,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:06:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:06:53,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 117 [2023-11-21 22:06:53,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-21 22:06:53,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:53,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 117 [2023-11-21 22:06:53,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:53,364 INFO L124 PetriNetUnfolderBase]: 3/154 cut-off events. [2023-11-21 22:06:53,364 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:06:53,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 154 events. 3/154 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 426 event pairs, 0 based on Foata normal form. 19/158 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-11-21 22:06:53,368 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 3 selfloop transitions, 2 changer transitions 1/107 dead transitions. [2023-11-21 22:06:53,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 231 flow [2023-11-21 22:06:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:06:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:06:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-11-21 22:06:53,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9373219373219374 [2023-11-21 22:06:53,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-11-21 22:06:53,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-11-21 22:06:53,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:53,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-11-21 22:06:53,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2023-11-21 22:06:53,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-21 22:06:53,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-11-21 22:06:53,419 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 241 flow. Second operand 3 states and 329 transitions. [2023-11-21 22:06:53,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 231 flow [2023-11-21 22:06:53,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:06:53,430 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 223 flow [2023-11-21 22:06:53,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2023-11-21 22:06:53,437 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2023-11-21 22:06:53,438 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 223 flow [2023-11-21 22:06:53,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-11-21 22:06:53,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:53,439 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] [2023-11-21 22:06:53,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:06:53,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:06:53,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2071611748, now seen corresponding path program 1 times [2023-11-21 22:06:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:53,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434954219] [2023-11-21 22:06:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:53,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434954219] [2023-11-21 22:06:53,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434954219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:53,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166861198] [2023-11-21 22:06:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:53,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:53,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2023-11-21 22:06:53,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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) [2023-11-21 22:06:53,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:53,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2023-11-21 22:06:53,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:53,966 INFO L124 PetriNetUnfolderBase]: 3/171 cut-off events. [2023-11-21 22:06:53,967 INFO L125 PetriNetUnfolderBase]: For 4/12 co-relation queries the response was YES. [2023-11-21 22:06:53,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 171 events. 3/171 cut-off events. For 4/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 283 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 123. Up to 17 conditions per place. [2023-11-21 22:06:53,968 INFO L140 encePairwiseOnDemand]: 105/117 looper letters, 16 selfloop transitions, 8 changer transitions 6/118 dead transitions. [2023-11-21 22:06:53,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 307 flow [2023-11-21 22:06:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:06:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:06:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-11-21 22:06:53,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8547008547008547 [2023-11-21 22:06:53,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-11-21 22:06:53,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-11-21 22:06:53,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:53,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-11-21 22:06:53,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-21 22:06:53,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2023-11-21 22:06:53,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2023-11-21 22:06:53,986 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 223 flow. Second operand 4 states and 400 transitions. [2023-11-21 22:06:53,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 307 flow [2023-11-21 22:06:53,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:06:53,991 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 271 flow [2023-11-21 22:06:53,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2023-11-21 22:06:53,992 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2023-11-21 22:06:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 271 flow [2023-11-21 22:06:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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) [2023-11-21 22:06:53,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:53,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:06:53,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:06:53,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1258733924, now seen corresponding path program 1 times [2023-11-21 22:06:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537322175] [2023-11-21 22:06:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:06:54,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:06:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:06:54,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:06:54,195 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:06:54,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:06:54,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-21 22:06:54,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-21 22:06:54,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-21 22:06:54,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-21 22:06:54,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-21 22:06:54,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-21 22:06:54,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-21 22:06:54,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-21 22:06:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:06:54,204 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:06:54,207 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:06:54,207 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:06:54,249 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:06:54,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 140 transitions, 296 flow [2023-11-21 22:06:54,305 INFO L124 PetriNetUnfolderBase]: 27/313 cut-off events. [2023-11-21 22:06:54,305 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-21 22:06:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 313 events. 27/313 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1031 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-11-21 22:06:54,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 140 transitions, 296 flow [2023-11-21 22:06:54,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 140 transitions, 296 flow [2023-11-21 22:06:54,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:06:54,313 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;@3ba7e074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:06:54,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-21 22:06:54,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:06:54,320 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:06:54,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:06:54,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:54,321 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] [2023-11-21 22:06:54,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:06:54,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1699899598, now seen corresponding path program 1 times [2023-11-21 22:06:54,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:54,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154400414] [2023-11-21 22:06:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:54,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154400414] [2023-11-21 22:06:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154400414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:06:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645091419] [2023-11-21 22:06:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:06:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:06:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:06:54,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 140 [2023-11-21 22:06:54,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 140 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-11-21 22:06:54,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 140 [2023-11-21 22:06:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:54,604 INFO L124 PetriNetUnfolderBase]: 36/670 cut-off events. [2023-11-21 22:06:54,604 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-21 22:06:54,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 670 events. 36/670 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3781 event pairs, 8 based on Foata normal form. 119/711 useless extension candidates. Maximal degree in co-relation 439. Up to 35 conditions per place. [2023-11-21 22:06:54,617 INFO L140 encePairwiseOnDemand]: 126/140 looper letters, 15 selfloop transitions, 6 changer transitions 1/140 dead transitions. [2023-11-21 22:06:54,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 140 transitions, 349 flow [2023-11-21 22:06:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:06:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:06:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-21 22:06:54,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9452380952380952 [2023-11-21 22:06:54,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-21 22:06:54,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-21 22:06:54,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:54,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-21 22:06:54,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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) [2023-11-21 22:06:54,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-21 22:06:54,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-21 22:06:54,628 INFO L175 Difference]: Start difference. First operand has 136 places, 140 transitions, 296 flow. Second operand 3 states and 397 transitions. [2023-11-21 22:06:54,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 140 transitions, 349 flow [2023-11-21 22:06:54,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 140 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:06:54,636 INFO L231 Difference]: Finished difference. Result has 137 places, 136 transitions, 328 flow [2023-11-21 22:06:54,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=137, PETRI_TRANSITIONS=136} [2023-11-21 22:06:54,640 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2023-11-21 22:06:54,640 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 136 transitions, 328 flow [2023-11-21 22:06:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-11-21 22:06:54,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:54,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:06:54,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:06:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -684448668, now seen corresponding path program 1 times [2023-11-21 22:06:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892900756] [2023-11-21 22:06:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:54,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892900756] [2023-11-21 22:06:54,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892900756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:54,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:54,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:54,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267192886] [2023-11-21 22:06:54,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:54,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:54,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2023-11-21 22:06:54,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 136 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 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) [2023-11-21 22:06:54,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:54,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2023-11-21 22:06:54,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:55,172 INFO L124 PetriNetUnfolderBase]: 29/835 cut-off events. [2023-11-21 22:06:55,173 INFO L125 PetriNetUnfolderBase]: For 109/189 co-relation queries the response was YES. [2023-11-21 22:06:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 835 events. 29/835 cut-off events. For 109/189 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5079 event pairs, 3 based on Foata normal form. 14/761 useless extension candidates. Maximal degree in co-relation 584. Up to 87 conditions per place. [2023-11-21 22:06:55,181 INFO L140 encePairwiseOnDemand]: 128/140 looper letters, 24 selfloop transitions, 9 changer transitions 3/152 dead transitions. [2023-11-21 22:06:55,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 152 transitions, 438 flow [2023-11-21 22:06:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:06:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:06:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-11-21 22:06:55,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-21 22:06:55,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-11-21 22:06:55,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-11-21 22:06:55,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:55,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-11-21 22:06:55,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 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) [2023-11-21 22:06:55,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-11-21 22:06:55,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-11-21 22:06:55,190 INFO L175 Difference]: Start difference. First operand has 137 places, 136 transitions, 328 flow. Second operand 4 states and 490 transitions. [2023-11-21 22:06:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 152 transitions, 438 flow [2023-11-21 22:06:55,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:06:55,197 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 386 flow [2023-11-21 22:06:55,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2023-11-21 22:06:55,198 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2023-11-21 22:06:55,198 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 386 flow [2023-11-21 22:06:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 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) [2023-11-21 22:06:55,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:55,200 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, 1, 1, 1] [2023-11-21 22:06:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:06:55,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:06:55,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1136145069, now seen corresponding path program 1 times [2023-11-21 22:06:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310207987] [2023-11-21 22:06:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:55,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:55,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:55,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310207987] [2023-11-21 22:06:55,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310207987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:55,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:55,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:55,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601212484] [2023-11-21 22:06:55,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:55,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:06:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:55,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:06:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:06:55,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 140 [2023-11-21 22:06:55,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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) [2023-11-21 22:06:55,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:55,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 140 [2023-11-21 22:06:55,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:57,333 INFO L124 PetriNetUnfolderBase]: 1653/7092 cut-off events. [2023-11-21 22:06:57,333 INFO L125 PetriNetUnfolderBase]: For 372/389 co-relation queries the response was YES. [2023-11-21 22:06:57,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 7092 events. 1653/7092 cut-off events. For 372/389 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 70056 event pairs, 588 based on Foata normal form. 0/6398 useless extension candidates. Maximal degree in co-relation 9337. Up to 2107 conditions per place. [2023-11-21 22:06:57,397 INFO L140 encePairwiseOnDemand]: 121/140 looper letters, 51 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2023-11-21 22:06:57,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 216 transitions, 762 flow [2023-11-21 22:06:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:06:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:06:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-11-21 22:06:57,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2023-11-21 22:06:57,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-11-21 22:06:57,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-11-21 22:06:57,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:57,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-11-21 22:06:57,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 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) [2023-11-21 22:06:57,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:06:57,409 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:06:57,410 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 386 flow. Second operand 6 states and 742 transitions. [2023-11-21 22:06:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 216 transitions, 762 flow [2023-11-21 22:06:57,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 216 transitions, 760 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 22:06:57,424 INFO L231 Difference]: Finished difference. Result has 149 places, 192 transitions, 688 flow [2023-11-21 22:06:57,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=149, PETRI_TRANSITIONS=192} [2023-11-21 22:06:57,428 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 13 predicate places. [2023-11-21 22:06:57,428 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 192 transitions, 688 flow [2023-11-21 22:06:57,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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) [2023-11-21 22:06:57,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:57,429 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, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:57,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:06:57,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:06:57,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:57,430 INFO L85 PathProgramCache]: Analyzing trace with hash -996210939, now seen corresponding path program 1 times [2023-11-21 22:06:57,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151452879] [2023-11-21 22:06:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:06:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151452879] [2023-11-21 22:06:57,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151452879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:57,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:57,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418239881] [2023-11-21 22:06:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:57,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:06:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:06:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:06:58,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 140 [2023-11-21 22:06:58,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 192 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2023-11-21 22:06:58,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:58,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 140 [2023-11-21 22:06:58,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:07:00,499 INFO L124 PetriNetUnfolderBase]: 3060/11795 cut-off events. [2023-11-21 22:07:00,499 INFO L125 PetriNetUnfolderBase]: For 4946/5282 co-relation queries the response was YES. [2023-11-21 22:07:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25010 conditions, 11795 events. 3060/11795 cut-off events. For 4946/5282 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 127381 event pairs, 834 based on Foata normal form. 54/10681 useless extension candidates. Maximal degree in co-relation 21025. Up to 4088 conditions per place. [2023-11-21 22:07:00,628 INFO L140 encePairwiseOnDemand]: 125/140 looper letters, 61 selfloop transitions, 72 changer transitions 0/261 dead transitions. [2023-11-21 22:07:00,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 261 transitions, 1290 flow [2023-11-21 22:07:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:07:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:07:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2023-11-21 22:07:00,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825 [2023-11-21 22:07:00,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2023-11-21 22:07:00,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2023-11-21 22:07:00,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:07:00,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2023-11-21 22:07:00,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:07:00,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:07:00,639 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:07:00,639 INFO L175 Difference]: Start difference. First operand has 149 places, 192 transitions, 688 flow. Second operand 6 states and 693 transitions. [2023-11-21 22:07:00,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 261 transitions, 1290 flow [2023-11-21 22:07:00,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 261 transitions, 1290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:07:00,672 INFO L231 Difference]: Finished difference. Result has 159 places, 259 transitions, 1366 flow [2023-11-21 22:07:00,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1366, PETRI_PLACES=159, PETRI_TRANSITIONS=259} [2023-11-21 22:07:00,674 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2023-11-21 22:07:00,674 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 259 transitions, 1366 flow [2023-11-21 22:07:00,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2023-11-21 22:07:00,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:00,675 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:00,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:07:00,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:07:00,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1382249774, now seen corresponding path program 1 times [2023-11-21 22:07:00,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550809818] [2023-11-21 22:07:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:00,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:07:00,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:00,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550809818] [2023-11-21 22:07:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550809818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:00,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:07:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717071460] [2023-11-21 22:07:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:07:00,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:07:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:07:00,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 140 [2023-11-21 22:07:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 259 transitions, 1366 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2023-11-21 22:07:00,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:07:00,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 140 [2023-11-21 22:07:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:07:02,608 INFO L124 PetriNetUnfolderBase]: 2180/9289 cut-off events. [2023-11-21 22:07:02,608 INFO L125 PetriNetUnfolderBase]: For 4702/4953 co-relation queries the response was YES. [2023-11-21 22:07:02,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20526 conditions, 9289 events. 2180/9289 cut-off events. For 4702/4953 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 98014 event pairs, 211 based on Foata normal form. 30/8630 useless extension candidates. Maximal degree in co-relation 17578. Up to 1711 conditions per place. [2023-11-21 22:07:02,713 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 16 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2023-11-21 22:07:02,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 266 transitions, 1440 flow [2023-11-21 22:07:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:07:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:07:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-11-21 22:07:02,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9095238095238095 [2023-11-21 22:07:02,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-11-21 22:07:02,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-11-21 22:07:02,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:07:02,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-11-21 22:07:02,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:07:02,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-21 22:07:02,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-21 22:07:02,720 INFO L175 Difference]: Start difference. First operand has 159 places, 259 transitions, 1366 flow. Second operand 3 states and 382 transitions. [2023-11-21 22:07:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 266 transitions, 1440 flow [2023-11-21 22:07:02,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 266 transitions, 1416 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-21 22:07:02,778 INFO L231 Difference]: Finished difference. Result has 163 places, 264 transitions, 1398 flow [2023-11-21 22:07:02,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1398, PETRI_PLACES=163, PETRI_TRANSITIONS=264} [2023-11-21 22:07:02,781 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2023-11-21 22:07:02,781 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 264 transitions, 1398 flow [2023-11-21 22:07:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2023-11-21 22:07:02,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:02,782 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:02,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:07:02,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-21 22:07:02,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1809059672, now seen corresponding path program 1 times [2023-11-21 22:07:02,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490965987] [2023-11-21 22:07:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:02,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:02,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:07:02,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:07:02,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-21 22:07:02,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-21 22:07:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-21 22:07:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-21 22:07:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-21 22:07:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-21 22:07:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-21 22:07:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-21 22:07:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-21 22:07:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-21 22:07:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-21 22:07:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-21 22:07:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:07:02,844 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 22:07:02,845 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:07:02,845 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:07:02,879 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:07:02,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 163 transitions, 353 flow [2023-11-21 22:07:03,025 INFO L124 PetriNetUnfolderBase]: 53/563 cut-off events. [2023-11-21 22:07:03,025 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-21 22:07:03,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 563 events. 53/563 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2219 event pairs, 1 based on Foata normal form. 0/481 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-11-21 22:07:03,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 163 transitions, 353 flow [2023-11-21 22:07:03,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 163 transitions, 353 flow [2023-11-21 22:07:03,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:07:03,034 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;@3ba7e074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:07:03,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-21 22:07:03,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:07:03,039 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:07:03,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:07:03,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:03,040 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] [2023-11-21 22:07:03,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:07:03,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1273386343, now seen corresponding path program 1 times [2023-11-21 22:07:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425780201] [2023-11-21 22:07:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:03,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:07:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425780201] [2023-11-21 22:07:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425780201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:07:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483025422] [2023-11-21 22:07:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:07:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:07:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:07:03,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2023-11-21 22:07:03,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-11-21 22:07:03,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:07:03,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2023-11-21 22:07:03,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:07:04,030 INFO L124 PetriNetUnfolderBase]: 476/4874 cut-off events. [2023-11-21 22:07:04,031 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2023-11-21 22:07:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 4874 events. 476/4874 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 52988 event pairs, 121 based on Foata normal form. 940/5200 useless extension candidates. Maximal degree in co-relation 2815. Up to 356 conditions per place. [2023-11-21 22:07:04,097 INFO L140 encePairwiseOnDemand]: 145/163 looper letters, 23 selfloop transitions, 9 changer transitions 1/168 dead transitions. [2023-11-21 22:07:04,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 168 transitions, 448 flow [2023-11-21 22:07:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:07:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:07:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-11-21 22:07:04,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9406952965235174 [2023-11-21 22:07:04,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-11-21 22:07:04,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-11-21 22:07:04,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:07:04,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-11-21 22:07:04,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-11-21 22:07:04,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2023-11-21 22:07:04,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2023-11-21 22:07:04,106 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 353 flow. Second operand 3 states and 460 transitions. [2023-11-21 22:07:04,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 168 transitions, 448 flow [2023-11-21 22:07:04,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 168 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:07:04,112 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 411 flow [2023-11-21 22:07:04,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-11-21 22:07:04,114 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-11-21 22:07:04,114 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 411 flow [2023-11-21 22:07:04,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-11-21 22:07:04,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:04,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:04,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:07:04,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:07:04,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:04,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1040205020, now seen corresponding path program 1 times [2023-11-21 22:07:04,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817564826] [2023-11-21 22:07:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:07:04,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:04,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817564826] [2023-11-21 22:07:04,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817564826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:04,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:07:04,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623788363] [2023-11-21 22:07:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:04,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:07:04,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:04,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:07:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:07:04,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2023-11-21 22:07:04,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-11-21 22:07:04,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:07:04,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2023-11-21 22:07:04,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:07:05,315 INFO L124 PetriNetUnfolderBase]: 249/4647 cut-off events. [2023-11-21 22:07:05,315 INFO L125 PetriNetUnfolderBase]: For 547/1091 co-relation queries the response was YES. [2023-11-21 22:07:05,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 4647 events. 249/4647 cut-off events. For 547/1091 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 48952 event pairs, 46 based on Foata normal form. 73/4212 useless extension candidates. Maximal degree in co-relation 3771. Up to 491 conditions per place. [2023-11-21 22:07:05,385 INFO L140 encePairwiseOnDemand]: 151/163 looper letters, 27 selfloop transitions, 9 changer transitions 3/179 dead transitions. [2023-11-21 22:07:05,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 179 transitions, 532 flow [2023-11-21 22:07:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:07:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:07:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-11-21 22:07:05,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8849693251533742 [2023-11-21 22:07:05,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-11-21 22:07:05,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-11-21 22:07:05,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:07:05,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-11-21 22:07:05,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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) [2023-11-21 22:07:05,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 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) [2023-11-21 22:07:05,394 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 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) [2023-11-21 22:07:05,394 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 411 flow. Second operand 4 states and 577 transitions. [2023-11-21 22:07:05,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 179 transitions, 532 flow [2023-11-21 22:07:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 179 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:07:05,401 INFO L231 Difference]: Finished difference. Result has 164 places, 169 transitions, 463 flow [2023-11-21 22:07:05,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=164, PETRI_TRANSITIONS=169} [2023-11-21 22:07:05,403 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 4 predicate places. [2023-11-21 22:07:05,403 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 169 transitions, 463 flow [2023-11-21 22:07:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-11-21 22:07:05,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:05,404 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, 1, 1, 1] [2023-11-21 22:07:05,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:07:05,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:07:05,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:05,405 INFO L85 PathProgramCache]: Analyzing trace with hash 68532204, now seen corresponding path program 1 times [2023-11-21 22:07:05,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:05,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517014497] [2023-11-21 22:07:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:07:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:05,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517014497] [2023-11-21 22:07:05,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517014497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:05,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:07:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108694213] [2023-11-21 22:07:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:07:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:07:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:07:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 163 [2023-11-21 22:07:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 169 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 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) [2023-11-21 22:07:05,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:07:05,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 163 [2023-11-21 22:07:05,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:07:22,229 INFO L124 PetriNetUnfolderBase]: 32167/114883 cut-off events. [2023-11-21 22:07:22,229 INFO L125 PetriNetUnfolderBase]: For 6508/6569 co-relation queries the response was YES. [2023-11-21 22:07:22,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180256 conditions, 114883 events. 32167/114883 cut-off events. For 6508/6569 co-relation queries the response was YES. Maximal size of possible extension queue 2311. Compared 1719279 event pairs, 10228 based on Foata normal form. 0/103773 useless extension candidates. Maximal degree in co-relation 94453. Up to 32728 conditions per place. [2023-11-21 22:07:23,232 INFO L140 encePairwiseOnDemand]: 140/163 looper letters, 71 selfloop transitions, 58 changer transitions 0/266 dead transitions. [2023-11-21 22:07:23,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 266 transitions, 987 flow [2023-11-21 22:07:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:07:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:07:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-11-21 22:07:23,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8936605316973415 [2023-11-21 22:07:23,236 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-11-21 22:07:23,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-11-21 22:07:23,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:07:23,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-11-21 22:07:23,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 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) [2023-11-21 22:07:23,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 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) [2023-11-21 22:07:23,243 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 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) [2023-11-21 22:07:23,244 INFO L175 Difference]: Start difference. First operand has 164 places, 169 transitions, 463 flow. Second operand 6 states and 874 transitions. [2023-11-21 22:07:23,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 266 transitions, 987 flow [2023-11-21 22:07:23,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 266 transitions, 985 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 22:07:23,364 INFO L231 Difference]: Finished difference. Result has 173 places, 229 transitions, 835 flow [2023-11-21 22:07:23,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=835, PETRI_PLACES=173, PETRI_TRANSITIONS=229} [2023-11-21 22:07:23,366 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 13 predicate places. [2023-11-21 22:07:23,367 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 229 transitions, 835 flow [2023-11-21 22:07:23,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 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) [2023-11-21 22:07:23,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:07:23,369 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, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:07:23,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-21 22:07:23,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash -576365830, now seen corresponding path program 1 times [2023-11-21 22:07:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283671593] [2023-11-21 22:07:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:07:23,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:23,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283671593] [2023-11-21 22:07:23,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283671593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:07:23,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:07:23,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:07:23,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357682457] [2023-11-21 22:07:23,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:07:23,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:07:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:07:23,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:07:24,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 163 [2023-11-21 22:07:24,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 229 transitions, 835 flow. Second operand has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2023-11-21 22:07:24,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:07:24,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 163 [2023-11-21 22:07:24,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand