./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.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_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/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_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/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_947094a7-c2cc-4def-8ca1-4f7f0e92e246/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 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:17:01,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:17:01,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:17:01,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:17:01,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:17:01,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:17:01,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:17:01,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:17:01,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:17:01,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:17:01,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:17:01,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:17:01,671 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:17:01,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:17:01,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:17:01,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:17:01,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:17:01,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:17:01,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:17:01,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:17:01,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:17:01,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:17:01,686 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:17:01,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:17:01,688 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:17:01,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:17:01,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:17:01,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:17:01,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:17:01,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:17:01,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:01,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:17:01,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:17:01,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:17:01,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:17:01,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:17:01,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:17:01,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:17:01,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:17:01,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:17:01,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:17:01,695 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_947094a7-c2cc-4def-8ca1-4f7f0e92e246/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 [2023-11-21 22:17:01,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:17:02,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:17:02,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:17:02,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:17:02,015 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:17:02,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2023-11-21 22:17:05,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:17:05,696 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:17:05,697 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2023-11-21 22:17:05,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/data/81fcdb01c/aeaa6bc0e0414f1cbc55a32065e4fa8d/FLAG11bd005e4 [2023-11-21 22:17:05,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/data/81fcdb01c/aeaa6bc0e0414f1cbc55a32065e4fa8d [2023-11-21 22:17:05,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:17:05,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:17:05,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:05,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:17:05,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:17:05,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:05" (1/1) ... [2023-11-21 22:17:05,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15789aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:05, skipping insertion in model container [2023-11-21 22:17:05,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:05" (1/1) ... [2023-11-21 22:17:05,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:06,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:06,298 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:17:06,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:06,441 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:17:06,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06 WrapperNode [2023-11-21 22:17:06,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:06,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:06,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:17:06,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:17:06,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,518 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-11-21 22:17:06,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:06,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:17:06,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:17:06,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:17:06,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:17:06,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:17:06,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:17:06,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:17:06,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (1/1) ... [2023-11-21 22:17:06,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:06,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:06,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:17:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947094a7-c2cc-4def-8ca1-4f7f0e92e246/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:17:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 22:17:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:17:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:17:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-21 22:17:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-21 22:17:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:17:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:17:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:17:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:17:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:17:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:17:06,659 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 22:17:06,820 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:17:06,822 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:17:07,097 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:17:07,109 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:17:07,109 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:17:07,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:07 BoogieIcfgContainer [2023-11-21 22:17:07,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:17:07,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:17:07,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:17:07,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:17:07,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:17:05" (1/3) ... [2023-11-21 22:17:07,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fecaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:07, skipping insertion in model container [2023-11-21 22:17:07,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:06" (2/3) ... [2023-11-21 22:17:07,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fecaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:07, skipping insertion in model container [2023-11-21 22:17:07,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:07" (3/3) ... [2023-11-21 22:17:07,122 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2023-11-21 22:17:07,132 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:17:07,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:17:07,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 22:17:07,145 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:17:07,215 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:17:07,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 117 transitions, 241 flow [2023-11-21 22:17:07,353 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-21 22:17:07,354 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:17:07,360 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 22:17:07,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 117 transitions, 241 flow [2023-11-21 22:17:07,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 117 transitions, 241 flow [2023-11-21 22:17:07,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:07,387 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;@142ef938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:07,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:17:07,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:07,407 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:17:07,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:07,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:07,408 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 22:17:07,409 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 22:17:07,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1675524990, now seen corresponding path program 1 times [2023-11-21 22:17:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310334915] [2023-11-21 22:17:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,765 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 22:17:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310334915] [2023-11-21 22:17:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310334915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:07,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:17:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034804408] [2023-11-21 22:17:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:07,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 117 [2023-11-21 22:17:07,856 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 22:17:07,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:07,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 117 [2023-11-21 22:17:07,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:07,988 INFO L124 PetriNetUnfolderBase]: 3/154 cut-off events. [2023-11-21 22:17:07,988 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:17:07,991 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 22:17:07,995 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 3 selfloop transitions, 2 changer transitions 1/107 dead transitions. [2023-11-21 22:17:07,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 231 flow [2023-11-21 22:17:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-11-21 22:17:08,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9373219373219374 [2023-11-21 22:17:08,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-11-21 22:17:08,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-11-21 22:17:08,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:08,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-11-21 22:17:08,045 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 22:17:08,054 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 22:17:08,055 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 22:17:08,057 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 241 flow. Second operand 3 states and 329 transitions. [2023-11-21 22:17:08,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 231 flow [2023-11-21 22:17:08,062 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 22:17:08,068 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 223 flow [2023-11-21 22:17:08,070 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 22:17:08,075 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2023-11-21 22:17:08,075 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 223 flow [2023-11-21 22:17:08,076 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 22:17:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:08,076 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 22:17:08,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:17:08,077 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 22:17:08,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2071611748, now seen corresponding path program 1 times [2023-11-21 22:17:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066333084] [2023-11-21 22:17:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:08,442 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 22:17:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066333084] [2023-11-21 22:17:08,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066333084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:08,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:08,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480878887] [2023-11-21 22:17:08,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:08,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 117 [2023-11-21 22:17:08,577 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 22:17:08,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:08,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 117 [2023-11-21 22:17:08,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:08,654 INFO L124 PetriNetUnfolderBase]: 3/171 cut-off events. [2023-11-21 22:17:08,655 INFO L125 PetriNetUnfolderBase]: For 4/12 co-relation queries the response was YES. [2023-11-21 22:17:08,655 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 22:17:08,656 INFO L140 encePairwiseOnDemand]: 105/117 looper letters, 16 selfloop transitions, 8 changer transitions 6/118 dead transitions. [2023-11-21 22:17:08,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 307 flow [2023-11-21 22:17:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:17:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-11-21 22:17:08,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8547008547008547 [2023-11-21 22:17:08,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-11-21 22:17:08,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-11-21 22:17:08,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:08,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-11-21 22:17:08,663 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 22:17:08,666 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 22:17:08,666 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 22:17:08,667 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 223 flow. Second operand 4 states and 400 transitions. [2023-11-21 22:17:08,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 307 flow [2023-11-21 22:17:08,669 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 22:17:08,672 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 271 flow [2023-11-21 22:17:08,673 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 22:17:08,674 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2023-11-21 22:17:08,674 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 271 flow [2023-11-21 22:17:08,675 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 22:17:08,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:08,676 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 22:17:08,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:17:08,676 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 22:17:08,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1258733924, now seen corresponding path program 1 times [2023-11-21 22:17:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:08,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202820703] [2023-11-21 22:17:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:08,720 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:08,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:08,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:08,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:17:08,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-21 22:17:08,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-21 22:17:08,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-21 22:17:08,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-21 22:17:08,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-21 22:17:08,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-21 22:17:08,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-21 22:17:08,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-21 22:17:08,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:17:08,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:17:08,781 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:08,781 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:17:08,818 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:17:08,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 140 transitions, 296 flow [2023-11-21 22:17:08,890 INFO L124 PetriNetUnfolderBase]: 27/313 cut-off events. [2023-11-21 22:17:08,891 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-21 22:17:08,893 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 22:17:08,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 140 transitions, 296 flow [2023-11-21 22:17:08,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 140 transitions, 296 flow [2023-11-21 22:17:08,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:08,905 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;@142ef938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:08,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-21 22:17:08,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:08,913 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:17:08,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:08,913 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 22:17:08,913 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 22:17:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1699899598, now seen corresponding path program 1 times [2023-11-21 22:17:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:08,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152573144] [2023-11-21 22:17:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:08,969 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 22:17:08,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:08,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152573144] [2023-11-21 22:17:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152573144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:17:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979024044] [2023-11-21 22:17:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:08,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 140 [2023-11-21 22:17:08,991 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 22:17:08,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:08,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 140 [2023-11-21 22:17:08,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:09,197 INFO L124 PetriNetUnfolderBase]: 36/670 cut-off events. [2023-11-21 22:17:09,197 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-21 22:17:09,204 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 22:17:09,208 INFO L140 encePairwiseOnDemand]: 126/140 looper letters, 15 selfloop transitions, 6 changer transitions 1/140 dead transitions. [2023-11-21 22:17:09,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 140 transitions, 349 flow [2023-11-21 22:17:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-21 22:17:09,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9452380952380952 [2023-11-21 22:17:09,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-21 22:17:09,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-21 22:17:09,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:09,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-21 22:17:09,214 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 22:17:09,216 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 22:17:09,217 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 22:17:09,217 INFO L175 Difference]: Start difference. First operand has 136 places, 140 transitions, 296 flow. Second operand 3 states and 397 transitions. [2023-11-21 22:17:09,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 140 transitions, 349 flow [2023-11-21 22:17:09,220 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 22:17:09,223 INFO L231 Difference]: Finished difference. Result has 137 places, 136 transitions, 328 flow [2023-11-21 22:17:09,224 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 22:17:09,225 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2023-11-21 22:17:09,225 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 136 transitions, 328 flow [2023-11-21 22:17:09,226 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 22:17:09,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:09,226 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 22:17:09,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:17:09,227 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 22:17:09,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash -684448668, now seen corresponding path program 1 times [2023-11-21 22:17:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699114589] [2023-11-21 22:17:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,392 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 22:17:09,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699114589] [2023-11-21 22:17:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699114589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338915285] [2023-11-21 22:17:09,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:09,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2023-11-21 22:17:09,527 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 22:17:09,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:09,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2023-11-21 22:17:09,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:09,752 INFO L124 PetriNetUnfolderBase]: 29/835 cut-off events. [2023-11-21 22:17:09,753 INFO L125 PetriNetUnfolderBase]: For 109/189 co-relation queries the response was YES. [2023-11-21 22:17:09,759 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 22:17:09,763 INFO L140 encePairwiseOnDemand]: 128/140 looper letters, 24 selfloop transitions, 9 changer transitions 3/152 dead transitions. [2023-11-21 22:17:09,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 152 transitions, 438 flow [2023-11-21 22:17:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:17:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-11-21 22:17:09,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-21 22:17:09,766 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-11-21 22:17:09,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-11-21 22:17:09,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:09,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-11-21 22:17:09,772 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 22:17:09,775 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 22:17:09,776 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 22:17:09,777 INFO L175 Difference]: Start difference. First operand has 137 places, 136 transitions, 328 flow. Second operand 4 states and 490 transitions. [2023-11-21 22:17:09,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 152 transitions, 438 flow [2023-11-21 22:17:09,782 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 22:17:09,789 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 386 flow [2023-11-21 22:17:09,789 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 22:17:09,792 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2023-11-21 22:17:09,797 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 386 flow [2023-11-21 22:17:09,798 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 22:17:09,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:09,798 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 22:17:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:17:09,799 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 22:17:09,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1136145069, now seen corresponding path program 1 times [2023-11-21 22:17:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240818136] [2023-11-21 22:17:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,415 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 22:17:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240818136] [2023-11-21 22:17:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240818136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:10,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686176959] [2023-11-21 22:17:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:10,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:10,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:10,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 140 [2023-11-21 22:17:10,618 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 22:17:10,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:10,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 140 [2023-11-21 22:17:10,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:12,098 INFO L124 PetriNetUnfolderBase]: 1653/7092 cut-off events. [2023-11-21 22:17:12,098 INFO L125 PetriNetUnfolderBase]: For 372/389 co-relation queries the response was YES. [2023-11-21 22:17:12,122 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 22:17:12,163 INFO L140 encePairwiseOnDemand]: 121/140 looper letters, 51 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2023-11-21 22:17:12,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 216 transitions, 762 flow [2023-11-21 22:17:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-11-21 22:17:12,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2023-11-21 22:17:12,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-11-21 22:17:12,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-11-21 22:17:12,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:12,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-11-21 22:17:12,171 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 22:17:12,174 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 22:17:12,176 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 22:17:12,176 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 386 flow. Second operand 6 states and 742 transitions. [2023-11-21 22:17:12,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 216 transitions, 762 flow [2023-11-21 22:17:12,184 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 22:17:12,188 INFO L231 Difference]: Finished difference. Result has 149 places, 192 transitions, 688 flow [2023-11-21 22:17:12,188 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 22:17:12,189 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 13 predicate places. [2023-11-21 22:17:12,189 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 192 transitions, 688 flow [2023-11-21 22:17:12,190 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 22:17:12,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:12,191 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 22:17:12,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:17:12,191 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 22:17:12,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash -996210939, now seen corresponding path program 1 times [2023-11-21 22:17:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097734409] [2023-11-21 22:17:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:12,693 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 22:17:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:12,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097734409] [2023-11-21 22:17:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097734409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:12,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769282580] [2023-11-21 22:17:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:12,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:13,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 140 [2023-11-21 22:17:13,027 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 22:17:13,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:13,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 140 [2023-11-21 22:17:13,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:15,738 INFO L124 PetriNetUnfolderBase]: 3060/11795 cut-off events. [2023-11-21 22:17:15,739 INFO L125 PetriNetUnfolderBase]: For 4946/5282 co-relation queries the response was YES. [2023-11-21 22:17:15,798 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 22:17:15,879 INFO L140 encePairwiseOnDemand]: 125/140 looper letters, 61 selfloop transitions, 72 changer transitions 0/261 dead transitions. [2023-11-21 22:17:15,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 261 transitions, 1290 flow [2023-11-21 22:17:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2023-11-21 22:17:15,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825 [2023-11-21 22:17:15,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2023-11-21 22:17:15,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2023-11-21 22:17:15,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:15,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2023-11-21 22:17:15,888 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 22:17:15,890 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 22:17:15,892 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 22:17:15,893 INFO L175 Difference]: Start difference. First operand has 149 places, 192 transitions, 688 flow. Second operand 6 states and 693 transitions. [2023-11-21 22:17:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 261 transitions, 1290 flow [2023-11-21 22:17:15,923 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 22:17:15,929 INFO L231 Difference]: Finished difference. Result has 159 places, 259 transitions, 1366 flow [2023-11-21 22:17:15,929 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 22:17:15,932 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2023-11-21 22:17:15,932 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 259 transitions, 1366 flow [2023-11-21 22:17:15,933 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 22:17:15,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:15,934 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 22:17:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:17:15,934 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 22:17:15,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1382249774, now seen corresponding path program 1 times [2023-11-21 22:17:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:15,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254184626] [2023-11-21 22:17:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:16,036 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 22:17:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254184626] [2023-11-21 22:17:16,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254184626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:16,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:17:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737398434] [2023-11-21 22:17:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:16,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:16,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 140 [2023-11-21 22:17:16,065 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 22:17:16,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:16,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 140 [2023-11-21 22:17:16,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:18,101 INFO L124 PetriNetUnfolderBase]: 2180/9289 cut-off events. [2023-11-21 22:17:18,101 INFO L125 PetriNetUnfolderBase]: For 4702/4953 co-relation queries the response was YES. [2023-11-21 22:17:18,146 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 22:17:18,186 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 16 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2023-11-21 22:17:18,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 266 transitions, 1440 flow [2023-11-21 22:17:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-11-21 22:17:18,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9095238095238095 [2023-11-21 22:17:18,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-11-21 22:17:18,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-11-21 22:17:18,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:18,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-11-21 22:17:18,191 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 22:17:18,193 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 22:17:18,193 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 22:17:18,193 INFO L175 Difference]: Start difference. First operand has 159 places, 259 transitions, 1366 flow. Second operand 3 states and 382 transitions. [2023-11-21 22:17:18,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 266 transitions, 1440 flow [2023-11-21 22:17:18,241 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 22:17:18,246 INFO L231 Difference]: Finished difference. Result has 163 places, 264 transitions, 1398 flow [2023-11-21 22:17:18,247 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 22:17:18,248 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2023-11-21 22:17:18,249 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 264 transitions, 1398 flow [2023-11-21 22:17:18,249 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 22:17:18,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:18,250 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 22:17:18,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:17:18,250 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 22:17:18,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1809059672, now seen corresponding path program 1 times [2023-11-21 22:17:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:18,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995088284] [2023-11-21 22:17:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:18,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:18,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:18,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:18,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-21 22:17:18,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-21 22:17:18,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-21 22:17:18,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-21 22:17:18,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-21 22:17:18,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-21 22:17:18,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-21 22:17:18,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-21 22:17:18,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-21 22:17:18,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-21 22:17:18,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-21 22:17:18,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-21 22:17:18,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:17:18,327 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 22:17:18,329 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:18,329 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:17:18,374 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:17:18,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 163 transitions, 353 flow [2023-11-21 22:17:18,461 INFO L124 PetriNetUnfolderBase]: 53/563 cut-off events. [2023-11-21 22:17:18,461 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-21 22:17:18,464 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 22:17:18,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 163 transitions, 353 flow [2023-11-21 22:17:18,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 163 transitions, 353 flow [2023-11-21 22:17:18,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:18,475 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;@142ef938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:18,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-21 22:17:18,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:18,481 INFO L124 PetriNetUnfolderBase]: 4/55 cut-off events. [2023-11-21 22:17:18,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:18,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:18,481 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 22:17:18,482 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 22:17:18,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:18,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1273386343, now seen corresponding path program 1 times [2023-11-21 22:17:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940674263] [2023-11-21 22:17:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:18,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:18,515 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 22:17:18,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940674263] [2023-11-21 22:17:18,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940674263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:18,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:18,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:17:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853939968] [2023-11-21 22:17:18,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:18,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:18,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:18,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:18,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2023-11-21 22:17:18,542 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 22:17:18,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:18,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2023-11-21 22:17:18,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:19,445 INFO L124 PetriNetUnfolderBase]: 476/4874 cut-off events. [2023-11-21 22:17:19,446 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2023-11-21 22:17:19,472 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 22:17:19,494 INFO L140 encePairwiseOnDemand]: 145/163 looper letters, 23 selfloop transitions, 9 changer transitions 1/168 dead transitions. [2023-11-21 22:17:19,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 168 transitions, 448 flow [2023-11-21 22:17:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-11-21 22:17:19,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9406952965235174 [2023-11-21 22:17:19,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-11-21 22:17:19,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-11-21 22:17:19,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:19,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-11-21 22:17:19,500 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 22:17:19,502 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 22:17:19,502 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 22:17:19,503 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 353 flow. Second operand 3 states and 460 transitions. [2023-11-21 22:17:19,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 168 transitions, 448 flow [2023-11-21 22:17:19,505 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 22:17:19,508 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 411 flow [2023-11-21 22:17:19,509 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 22:17:19,511 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-11-21 22:17:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 411 flow [2023-11-21 22:17:19,512 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 22:17:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:19,512 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 22:17:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:17:19,514 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 22:17:19,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1040205020, now seen corresponding path program 1 times [2023-11-21 22:17:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000833731] [2023-11-21 22:17:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:19,623 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 22:17:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000833731] [2023-11-21 22:17:19,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000833731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:19,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100905726] [2023-11-21 22:17:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:19,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2023-11-21 22:17:19,717 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 22:17:19,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:19,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2023-11-21 22:17:19,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:20,697 INFO L124 PetriNetUnfolderBase]: 249/4647 cut-off events. [2023-11-21 22:17:20,697 INFO L125 PetriNetUnfolderBase]: For 547/1091 co-relation queries the response was YES. [2023-11-21 22:17:20,726 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 22:17:20,756 INFO L140 encePairwiseOnDemand]: 151/163 looper letters, 27 selfloop transitions, 9 changer transitions 3/179 dead transitions. [2023-11-21 22:17:20,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 179 transitions, 532 flow [2023-11-21 22:17:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:17:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-11-21 22:17:20,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8849693251533742 [2023-11-21 22:17:20,761 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-11-21 22:17:20,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-11-21 22:17:20,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:20,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-11-21 22:17:20,766 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 22:17:20,769 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 22:17:20,770 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 22:17:20,770 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 411 flow. Second operand 4 states and 577 transitions. [2023-11-21 22:17:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 179 transitions, 532 flow [2023-11-21 22:17:20,776 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 22:17:20,780 INFO L231 Difference]: Finished difference. Result has 164 places, 169 transitions, 463 flow [2023-11-21 22:17:20,781 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 22:17:20,782 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 4 predicate places. [2023-11-21 22:17:20,783 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 169 transitions, 463 flow [2023-11-21 22:17:20,783 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 22:17:20,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:20,784 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 22:17:20,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:17:20,785 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 22:17:20,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash 68532204, now seen corresponding path program 1 times [2023-11-21 22:17:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769137078] [2023-11-21 22:17:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:21,228 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 22:17:21,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769137078] [2023-11-21 22:17:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769137078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:21,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292472616] [2023-11-21 22:17:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:21,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:21,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 163 [2023-11-21 22:17:21,430 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 22:17:21,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:21,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 163 [2023-11-21 22:17:21,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:38,204 INFO L124 PetriNetUnfolderBase]: 32167/114883 cut-off events. [2023-11-21 22:17:38,204 INFO L125 PetriNetUnfolderBase]: For 6508/6569 co-relation queries the response was YES. [2023-11-21 22:17:38,609 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 22:17:39,167 INFO L140 encePairwiseOnDemand]: 140/163 looper letters, 71 selfloop transitions, 58 changer transitions 0/266 dead transitions. [2023-11-21 22:17:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 266 transitions, 987 flow [2023-11-21 22:17:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-11-21 22:17:39,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8936605316973415 [2023-11-21 22:17:39,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-11-21 22:17:39,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-11-21 22:17:39,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:39,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-11-21 22:17:39,176 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 22:17:39,178 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 22:17:39,179 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 22:17:39,179 INFO L175 Difference]: Start difference. First operand has 164 places, 169 transitions, 463 flow. Second operand 6 states and 874 transitions. [2023-11-21 22:17:39,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 266 transitions, 987 flow [2023-11-21 22:17:39,314 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 22:17:39,320 INFO L231 Difference]: Finished difference. Result has 173 places, 229 transitions, 835 flow [2023-11-21 22:17:39,321 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 22:17:39,323 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 13 predicate places. [2023-11-21 22:17:39,323 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 229 transitions, 835 flow [2023-11-21 22:17:39,325 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 22:17:39,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:39,325 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 22:17:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:17:39,326 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 22:17:39,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash -576365830, now seen corresponding path program 1 times [2023-11-21 22:17:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670159869] [2023-11-21 22:17:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:39,669 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 22:17:39,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:39,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670159869] [2023-11-21 22:17:39,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670159869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195143790] [2023-11-21 22:17:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:40,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 163 [2023-11-21 22:17:40,067 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 22:17:40,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:40,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 163 [2023-11-21 22:17:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand