./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:27,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:27,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:46:27,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:27,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:27,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:27,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:27,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:27,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:27,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:27,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:27,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:27,469 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:27,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:27,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:27,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:27,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:27,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:27,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:27,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:27,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:27,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:27,474 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:46:27,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:46:27,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:27,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:27,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:27,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:27,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:27,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:27,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:27,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:27,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:27,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:27,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:27,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:27,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:27,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:27,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:27,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:27,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:27,481 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_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b [2023-11-26 11:46:27,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:27,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:27,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:27,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:27,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:27,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i [2023-11-26 11:46:30,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:31,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:31,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/sv-benchmarks/c/pthread-ext/04_incdec_cas-race.i [2023-11-26 11:46:31,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/data/e56574593/1b00719171224996860b49cc73127320/FLAGab939bdaa [2023-11-26 11:46:31,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/data/e56574593/1b00719171224996860b49cc73127320 [2023-11-26 11:46:31,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:31,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:31,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:31,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:31,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:31,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3209db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31, skipping insertion in model container [2023-11-26 11:46:31,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:31,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:31,711 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:31,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:31,828 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:31,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31 WrapperNode [2023-11-26 11:46:31,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:31,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:31,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:31,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:31,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,923 INFO L138 Inliner]: procedures = 172, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2023-11-26 11:46:31,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:31,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:31,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:31,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:31,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:31,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:31,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:31,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:31,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:32,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (1/1) ... [2023-11-26 11:46:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:32,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:32,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06e4a3e-39c6-4330-8955-465b7cf93065/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:46:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 11:46:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 11:46:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:46:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:46:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:46:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:46:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:32,073 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:46:32,242 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:32,244 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:32,947 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:33,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:33,508 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:46:33,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:33 BoogieIcfgContainer [2023-11-26 11:46:33,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:33,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:33,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:33,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:33,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:31" (1/3) ... [2023-11-26 11:46:33,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61feb3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:33, skipping insertion in model container [2023-11-26 11:46:33,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:31" (2/3) ... [2023-11-26 11:46:33,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61feb3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:33, skipping insertion in model container [2023-11-26 11:46:33,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:33" (3/3) ... [2023-11-26 11:46:33,524 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas-race.i [2023-11-26 11:46:33,579 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:46:33,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:33,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-26 11:46:33,589 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:46:33,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:46:33,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 138 transitions, 280 flow [2023-11-26 11:46:33,853 INFO L124 PetriNetUnfolderBase]: 11/149 cut-off events. [2023-11-26 11:46:33,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:46:33,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 149 events. 11/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 337 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-11-26 11:46:33,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 138 transitions, 280 flow [2023-11-26 11:46:33,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 138 transitions, 280 flow [2023-11-26 11:46:33,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:33,905 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;@4cda42e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:33,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-26 11:46:33,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:33,924 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-26 11:46:33,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:46:33,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:33,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:33,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 11:46:33,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1405626418, now seen corresponding path program 1 times [2023-11-26 11:46:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576396787] [2023-11-26 11:46:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:34,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:46:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:34,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:46:34,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:46:34,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2023-11-26 11:46:34,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2023-11-26 11:46:34,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2023-11-26 11:46:34,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2023-11-26 11:46:34,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2023-11-26 11:46:34,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2023-11-26 11:46:34,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2023-11-26 11:46:34,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2023-11-26 11:46:34,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2023-11-26 11:46:34,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2023-11-26 11:46:34,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2023-11-26 11:46:34,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2023-11-26 11:46:34,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2023-11-26 11:46:34,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2023-11-26 11:46:34,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2023-11-26 11:46:34,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2023-11-26 11:46:34,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2023-11-26 11:46:34,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2023-11-26 11:46:34,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2023-11-26 11:46:34,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2023-11-26 11:46:34,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2023-11-26 11:46:34,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2023-11-26 11:46:34,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2023-11-26 11:46:34,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2023-11-26 11:46:34,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2023-11-26 11:46:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2023-11-26 11:46:34,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2023-11-26 11:46:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2023-11-26 11:46:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2023-11-26 11:46:34,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2023-11-26 11:46:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2023-11-26 11:46:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2023-11-26 11:46:34,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2023-11-26 11:46:34,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2023-11-26 11:46:34,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2023-11-26 11:46:34,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2023-11-26 11:46:34,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2023-11-26 11:46:34,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:46:34,169 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:46:34,174 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:46:34,174 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:46:34,453 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:46:34,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 244 transitions, 498 flow [2023-11-26 11:46:34,626 INFO L124 PetriNetUnfolderBase]: 21/268 cut-off events. [2023-11-26 11:46:34,626 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:46:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 268 events. 21/268 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 223. Up to 6 conditions per place. [2023-11-26 11:46:34,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 244 transitions, 498 flow [2023-11-26 11:46:34,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 244 transitions, 498 flow [2023-11-26 11:46:34,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:34,646 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;@4cda42e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:34,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-11-26 11:46:34,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:34,665 INFO L124 PetriNetUnfolderBase]: 3/79 cut-off events. [2023-11-26 11:46:34,665 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:46:34,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:34,666 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] [2023-11-26 11:46:34,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-11-26 11:46:34,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1459881071, now seen corresponding path program 1 times [2023-11-26 11:46:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159734265] [2023-11-26 11:46:34,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159734265] [2023-11-26 11:46:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159734265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840677476] [2023-11-26 11:46:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:34,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 244 [2023-11-26 11:46:34,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 244 transitions, 498 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:34,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 244 [2023-11-26 11:46:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:35,476 INFO L124 PetriNetUnfolderBase]: 72/633 cut-off events. [2023-11-26 11:46:35,476 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-26 11:46:35,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 633 events. 72/633 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3541 event pairs, 20 based on Foata normal form. 51/604 useless extension candidates. Maximal degree in co-relation 196. Up to 73 conditions per place. [2023-11-26 11:46:35,490 INFO L140 encePairwiseOnDemand]: 210/244 looper letters, 14 selfloop transitions, 0 changer transitions 0/205 dead transitions. [2023-11-26 11:46:35,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 205 transitions, 448 flow [2023-11-26 11:46:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:46:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 440 transitions. [2023-11-26 11:46:35,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9016393442622951 [2023-11-26 11:46:35,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 440 transitions. [2023-11-26 11:46:35,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 440 transitions. [2023-11-26 11:46:35,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:35,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 440 transitions. [2023-11-26 11:46:35,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,538 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,541 INFO L175 Difference]: Start difference. First operand has 230 places, 244 transitions, 498 flow. Second operand 2 states and 440 transitions. [2023-11-26 11:46:35,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 205 transitions, 448 flow [2023-11-26 11:46:35,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 205 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:46:35,554 INFO L231 Difference]: Finished difference. Result has 197 places, 205 transitions, 420 flow [2023-11-26 11:46:35,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=420, PETRI_PLACES=197, PETRI_TRANSITIONS=205} [2023-11-26 11:46:35,562 INFO L281 CegarLoopForPetriNet]: 230 programPoint places, -33 predicate places. [2023-11-26 11:46:35,562 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 205 transitions, 420 flow [2023-11-26 11:46:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:35,570 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:46:35,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-11-26 11:46:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1276645595, now seen corresponding path program 1 times [2023-11-26 11:46:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472413881] [2023-11-26 11:46:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:35,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:46:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:35,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:46:35,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:46:35,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2023-11-26 11:46:35,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 55 remaining) [2023-11-26 11:46:35,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 55 remaining) [2023-11-26 11:46:35,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 55 remaining) [2023-11-26 11:46:35,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 55 remaining) [2023-11-26 11:46:35,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 55 remaining) [2023-11-26 11:46:35,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 55 remaining) [2023-11-26 11:46:35,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 55 remaining) [2023-11-26 11:46:35,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 55 remaining) [2023-11-26 11:46:35,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (45 of 55 remaining) [2023-11-26 11:46:35,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (44 of 55 remaining) [2023-11-26 11:46:35,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (43 of 55 remaining) [2023-11-26 11:46:35,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 55 remaining) [2023-11-26 11:46:35,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (41 of 55 remaining) [2023-11-26 11:46:35,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (40 of 55 remaining) [2023-11-26 11:46:35,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (39 of 55 remaining) [2023-11-26 11:46:35,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (38 of 55 remaining) [2023-11-26 11:46:35,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 55 remaining) [2023-11-26 11:46:35,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 55 remaining) [2023-11-26 11:46:35,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 55 remaining) [2023-11-26 11:46:35,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 55 remaining) [2023-11-26 11:46:35,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 55 remaining) [2023-11-26 11:46:35,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 55 remaining) [2023-11-26 11:46:35,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 55 remaining) [2023-11-26 11:46:35,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 55 remaining) [2023-11-26 11:46:35,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 55 remaining) [2023-11-26 11:46:35,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 55 remaining) [2023-11-26 11:46:35,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 55 remaining) [2023-11-26 11:46:35,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 55 remaining) [2023-11-26 11:46:35,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 55 remaining) [2023-11-26 11:46:35,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 55 remaining) [2023-11-26 11:46:35,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 55 remaining) [2023-11-26 11:46:35,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 55 remaining) [2023-11-26 11:46:35,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 55 remaining) [2023-11-26 11:46:35,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 55 remaining) [2023-11-26 11:46:35,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 55 remaining) [2023-11-26 11:46:35,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 55 remaining) [2023-11-26 11:46:35,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 55 remaining) [2023-11-26 11:46:35,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 55 remaining) [2023-11-26 11:46:35,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 55 remaining) [2023-11-26 11:46:35,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 55 remaining) [2023-11-26 11:46:35,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 55 remaining) [2023-11-26 11:46:35,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 55 remaining) [2023-11-26 11:46:35,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 55 remaining) [2023-11-26 11:46:35,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 55 remaining) [2023-11-26 11:46:35,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 55 remaining) [2023-11-26 11:46:35,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 55 remaining) [2023-11-26 11:46:35,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 55 remaining) [2023-11-26 11:46:35,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 55 remaining) [2023-11-26 11:46:35,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 55 remaining) [2023-11-26 11:46:35,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 55 remaining) [2023-11-26 11:46:35,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 55 remaining) [2023-11-26 11:46:35,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 55 remaining) [2023-11-26 11:46:35,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 55 remaining) [2023-11-26 11:46:35,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 55 remaining) [2023-11-26 11:46:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:46:35,671 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:46:35,671 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:46:35,672 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:46:35,886 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:46:35,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 350 transitions, 718 flow [2023-11-26 11:46:36,042 INFO L124 PetriNetUnfolderBase]: 31/387 cut-off events. [2023-11-26 11:46:36,042 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:46:36,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1778 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 328. Up to 8 conditions per place. [2023-11-26 11:46:36,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 350 transitions, 718 flow [2023-11-26 11:46:36,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 350 transitions, 718 flow [2023-11-26 11:46:36,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:36,062 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;@4cda42e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:36,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-11-26 11:46:36,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:36,075 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-11-26 11:46:36,075 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 11:46:36,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:36,075 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] [2023-11-26 11:46:36,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-26 11:46:36,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 843338056, now seen corresponding path program 1 times [2023-11-26 11:46:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636036515] [2023-11-26 11:46:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:36,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636036515] [2023-11-26 11:46:36,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636036515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:36,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:36,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114014672] [2023-11-26 11:46:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:36,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 350 [2023-11-26 11:46:36,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 350 transitions, 718 flow. Second operand has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:36,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:36,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 350 [2023-11-26 11:46:36,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:37,972 INFO L124 PetriNetUnfolderBase]: 547/3353 cut-off events. [2023-11-26 11:46:37,972 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-11-26 11:46:38,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 3353 events. 547/3353 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30680 event pairs, 220 based on Foata normal form. 316/3192 useless extension candidates. Maximal degree in co-relation 717. Up to 548 conditions per place. [2023-11-26 11:46:38,049 INFO L140 encePairwiseOnDemand]: 300/350 looper letters, 21 selfloop transitions, 0 changer transitions 0/295 dead transitions. [2023-11-26 11:46:38,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 295 transitions, 650 flow [2023-11-26 11:46:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:46:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 629 transitions. [2023-11-26 11:46:38,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8985714285714286 [2023-11-26 11:46:38,053 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 629 transitions. [2023-11-26 11:46:38,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 629 transitions. [2023-11-26 11:46:38,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:38,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 629 transitions. [2023-11-26 11:46:38,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:38,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:38,066 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:38,066 INFO L175 Difference]: Start difference. First operand has 329 places, 350 transitions, 718 flow. Second operand 2 states and 629 transitions. [2023-11-26 11:46:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 295 transitions, 650 flow [2023-11-26 11:46:38,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 648 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 11:46:38,080 INFO L231 Difference]: Finished difference. Result has 282 places, 295 transitions, 606 flow [2023-11-26 11:46:38,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=606, PETRI_PLACES=282, PETRI_TRANSITIONS=295} [2023-11-26 11:46:38,082 INFO L281 CegarLoopForPetriNet]: 329 programPoint places, -47 predicate places. [2023-11-26 11:46:38,083 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 295 transitions, 606 flow [2023-11-26 11:46:38,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:38,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:38,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:46:38,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-26 11:46:38,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -298727822, now seen corresponding path program 1 times [2023-11-26 11:46:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536837362] [2023-11-26 11:46:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:38,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536837362] [2023-11-26 11:46:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536837362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:38,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:38,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280826010] [2023-11-26 11:46:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:46:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:46:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:46:39,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 350 [2023-11-26 11:46:39,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 295 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:39,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:39,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 350 [2023-11-26 11:46:39,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:53,584 INFO L124 PetriNetUnfolderBase]: 25089/72259 cut-off events. [2023-11-26 11:46:53,584 INFO L125 PetriNetUnfolderBase]: For 1420/1420 co-relation queries the response was YES. [2023-11-26 11:46:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107893 conditions, 72259 events. 25089/72259 cut-off events. For 1420/1420 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 1016225 event pairs, 2316 based on Foata normal form. 0/62000 useless extension candidates. Maximal degree in co-relation 107887. Up to 12309 conditions per place. [2023-11-26 11:46:54,420 INFO L140 encePairwiseOnDemand]: 302/350 looper letters, 180 selfloop transitions, 96 changer transitions 0/513 dead transitions. [2023-11-26 11:46:54,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 513 transitions, 1634 flow [2023-11-26 11:46:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:46:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:46:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2023-11-26 11:46:54,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8257142857142857 [2023-11-26 11:46:54,427 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2023-11-26 11:46:54,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2023-11-26 11:46:54,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:54,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2023-11-26 11:46:54,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:54,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 350.0) internal successors, (2450), 7 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:54,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 350.0) internal successors, (2450), 7 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:54,444 INFO L175 Difference]: Start difference. First operand has 282 places, 295 transitions, 606 flow. Second operand 6 states and 1734 transitions. [2023-11-26 11:46:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 513 transitions, 1634 flow [2023-11-26 11:46:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 513 transitions, 1634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:46:54,460 INFO L231 Difference]: Finished difference. Result has 292 places, 391 transitions, 1278 flow [2023-11-26 11:46:54,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1278, PETRI_PLACES=292, PETRI_TRANSITIONS=391} [2023-11-26 11:46:54,463 INFO L281 CegarLoopForPetriNet]: 329 programPoint places, -37 predicate places. [2023-11-26 11:46:54,463 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 391 transitions, 1278 flow [2023-11-26 11:46:54,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:54,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:54,465 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:54,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:46:54,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2023-11-26 11:46:54,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -453982895, now seen corresponding path program 1 times [2023-11-26 11:46:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:54,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257092992] [2023-11-26 11:46:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:54,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:46:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:46:54,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:46:54,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:46:54,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (72 of 73 remaining) [2023-11-26 11:46:54,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (71 of 73 remaining) [2023-11-26 11:46:54,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (70 of 73 remaining) [2023-11-26 11:46:54,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (69 of 73 remaining) [2023-11-26 11:46:54,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (68 of 73 remaining) [2023-11-26 11:46:54,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (67 of 73 remaining) [2023-11-26 11:46:54,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (66 of 73 remaining) [2023-11-26 11:46:54,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (65 of 73 remaining) [2023-11-26 11:46:54,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (64 of 73 remaining) [2023-11-26 11:46:54,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (63 of 73 remaining) [2023-11-26 11:46:54,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (62 of 73 remaining) [2023-11-26 11:46:54,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (61 of 73 remaining) [2023-11-26 11:46:54,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (60 of 73 remaining) [2023-11-26 11:46:54,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (59 of 73 remaining) [2023-11-26 11:46:54,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (58 of 73 remaining) [2023-11-26 11:46:54,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (57 of 73 remaining) [2023-11-26 11:46:54,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (56 of 73 remaining) [2023-11-26 11:46:54,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (55 of 73 remaining) [2023-11-26 11:46:54,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (54 of 73 remaining) [2023-11-26 11:46:54,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 73 remaining) [2023-11-26 11:46:54,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 73 remaining) [2023-11-26 11:46:54,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 73 remaining) [2023-11-26 11:46:54,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 73 remaining) [2023-11-26 11:46:54,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 73 remaining) [2023-11-26 11:46:54,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 73 remaining) [2023-11-26 11:46:54,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 73 remaining) [2023-11-26 11:46:54,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 73 remaining) [2023-11-26 11:46:54,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (45 of 73 remaining) [2023-11-26 11:46:54,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (44 of 73 remaining) [2023-11-26 11:46:54,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (43 of 73 remaining) [2023-11-26 11:46:54,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 73 remaining) [2023-11-26 11:46:54,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (41 of 73 remaining) [2023-11-26 11:46:54,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (40 of 73 remaining) [2023-11-26 11:46:54,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (39 of 73 remaining) [2023-11-26 11:46:54,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (38 of 73 remaining) [2023-11-26 11:46:54,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 73 remaining) [2023-11-26 11:46:54,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 73 remaining) [2023-11-26 11:46:54,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 73 remaining) [2023-11-26 11:46:54,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 73 remaining) [2023-11-26 11:46:54,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 73 remaining) [2023-11-26 11:46:54,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 73 remaining) [2023-11-26 11:46:54,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 73 remaining) [2023-11-26 11:46:54,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 73 remaining) [2023-11-26 11:46:54,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 73 remaining) [2023-11-26 11:46:54,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 73 remaining) [2023-11-26 11:46:54,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 73 remaining) [2023-11-26 11:46:54,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 73 remaining) [2023-11-26 11:46:54,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 73 remaining) [2023-11-26 11:46:54,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 73 remaining) [2023-11-26 11:46:54,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (23 of 73 remaining) [2023-11-26 11:46:54,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 73 remaining) [2023-11-26 11:46:54,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (21 of 73 remaining) [2023-11-26 11:46:54,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 73 remaining) [2023-11-26 11:46:54,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 73 remaining) [2023-11-26 11:46:54,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 73 remaining) [2023-11-26 11:46:54,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 73 remaining) [2023-11-26 11:46:54,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 73 remaining) [2023-11-26 11:46:54,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 73 remaining) [2023-11-26 11:46:54,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 73 remaining) [2023-11-26 11:46:54,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 73 remaining) [2023-11-26 11:46:54,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 73 remaining) [2023-11-26 11:46:54,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 73 remaining) [2023-11-26 11:46:54,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 73 remaining) [2023-11-26 11:46:54,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 73 remaining) [2023-11-26 11:46:54,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (5 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (3 of 73 remaining) [2023-11-26 11:46:54,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 73 remaining) [2023-11-26 11:46:54,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 73 remaining) [2023-11-26 11:46:54,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 73 remaining) [2023-11-26 11:46:54,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:46:54,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:46:54,561 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:46:54,561 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 11:46:54,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:46:54,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 456 transitions, 940 flow [2023-11-26 11:46:55,132 INFO L124 PetriNetUnfolderBase]: 41/506 cut-off events. [2023-11-26 11:46:55,133 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 11:46:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 506 events. 41/506 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2541 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 433. Up to 10 conditions per place. [2023-11-26 11:46:55,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 456 transitions, 940 flow [2023-11-26 11:46:55,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 456 transitions, 940 flow [2023-11-26 11:46:55,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:55,161 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;@4cda42e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:55,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-26 11:46:55,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:55,169 INFO L124 PetriNetUnfolderBase]: 3/79 cut-off events. [2023-11-26 11:46:55,170 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:46:55,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:55,170 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] [2023-11-26 11:46:55,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2023-11-26 11:46:55,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 394790696, now seen corresponding path program 1 times [2023-11-26 11:46:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202043652] [2023-11-26 11:46:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202043652] [2023-11-26 11:46:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202043652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:55,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:55,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366273240] [2023-11-26 11:46:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:55,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:55,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 456 [2023-11-26 11:46:55,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 456 transitions, 940 flow. Second operand has 2 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:55,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:55,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 456 [2023-11-26 11:46:55,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:00,497 INFO L124 PetriNetUnfolderBase]: 3672/17703 cut-off events. [2023-11-26 11:47:00,497 INFO L125 PetriNetUnfolderBase]: For 2166/2166 co-relation queries the response was YES. [2023-11-26 11:47:00,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22123 conditions, 17703 events. 3672/17703 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 218287 event pairs, 1720 based on Foata normal form. 1891/16880 useless extension candidates. Maximal degree in co-relation 4032. Up to 3673 conditions per place. [2023-11-26 11:47:00,830 INFO L140 encePairwiseOnDemand]: 390/456 looper letters, 28 selfloop transitions, 0 changer transitions 0/385 dead transitions. [2023-11-26 11:47:00,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 385 transitions, 854 flow [2023-11-26 11:47:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:47:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 818 transitions. [2023-11-26 11:47:00,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8969298245614035 [2023-11-26 11:47:00,835 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 818 transitions. [2023-11-26 11:47:00,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 818 transitions. [2023-11-26 11:47:00,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:00,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 818 transitions. [2023-11-26 11:47:00,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:00,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:00,844 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:00,845 INFO L175 Difference]: Start difference. First operand has 428 places, 456 transitions, 940 flow. Second operand 2 states and 818 transitions. [2023-11-26 11:47:00,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 385 transitions, 854 flow [2023-11-26 11:47:00,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 385 transitions, 848 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-26 11:47:00,856 INFO L231 Difference]: Finished difference. Result has 367 places, 385 transitions, 792 flow [2023-11-26 11:47:00,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=792, PETRI_PLACES=367, PETRI_TRANSITIONS=385} [2023-11-26 11:47:00,859 INFO L281 CegarLoopForPetriNet]: 428 programPoint places, -61 predicate places. [2023-11-26 11:47:00,859 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 385 transitions, 792 flow [2023-11-26 11:47:00,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:00,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:00,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:47:00,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2023-11-26 11:47:00,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2112819346, now seen corresponding path program 1 times [2023-11-26 11:47:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:00,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332098639] [2023-11-26 11:47:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:01,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332098639] [2023-11-26 11:47:01,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332098639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:01,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:47:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615372290] [2023-11-26 11:47:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:01,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:01,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:02,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 456 [2023-11-26 11:47:02,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 385 transitions, 792 flow. Second operand has 6 states, 6 states have (on average 314.1666666666667) internal successors, (1885), 6 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:02,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:02,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 456 [2023-11-26 11:47:02,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand