./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/03_incdec-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/03_incdec-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f19dc7b6c5c71a67d9914faaf2a1157355ecf0e14b05edf8c2541b2f25a5ffb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:16:14,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:14,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:16:14,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:14,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:14,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:14,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:14,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:14,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:16:14,269 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:16:14,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:14,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:14,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:14,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:14,274 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:14,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:14,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:16:14,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:16:14,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:14,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:16:14,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:14,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:16:14,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:14,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:16:14,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:16:14,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:16:14,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:14,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:14,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:14,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:16:14,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:14,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:14,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:14,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:14,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:16:14,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:14,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:14,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:14,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:14,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:16:14,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:14,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:14,289 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_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f19dc7b6c5c71a67d9914faaf2a1157355ecf0e14b05edf8c2541b2f25a5ffb [2023-11-21 22:16:14,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:14,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:14,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:14,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:14,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:14,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/03_incdec-pthread.i [2023-11-21 22:16:17,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:18,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:18,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/sv-benchmarks/c/pthread-ext/03_incdec-pthread.i [2023-11-21 22:16:18,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/data/a8532a478/b2afa5aa593c4383bbdb9c1dba3731b3/FLAGb235b9401 [2023-11-21 22:16:18,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/data/a8532a478/b2afa5aa593c4383bbdb9c1dba3731b3 [2023-11-21 22:16:18,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:18,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:18,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:18,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:18,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:18,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3effe699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18, skipping insertion in model container [2023-11-21 22:16:18,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:18,585 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/sv-benchmarks/c/pthread-ext/03_incdec-pthread.i[30745,30758] [2023-11-21 22:16:18,594 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/sv-benchmarks/c/pthread-ext/03_incdec-pthread.i[31120,31133] [2023-11-21 22:16:18,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:18,619 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:18,663 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/sv-benchmarks/c/pthread-ext/03_incdec-pthread.i[30745,30758] [2023-11-21 22:16:18,667 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/sv-benchmarks/c/pthread-ext/03_incdec-pthread.i[31120,31133] [2023-11-21 22:16:18,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:18,719 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:18,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18 WrapperNode [2023-11-21 22:16:18,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:18,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:18,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:18,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:18,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,781 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 99 [2023-11-21 22:16:18,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:18,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:18,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:18,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:18,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,798 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,810 INFO L187 HeapSplitter]: Split 8 memory accesses to 3 slices as follows [2, 5, 1] [2023-11-21 22:16:18,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:18,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:18,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:18,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:18,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (1/1) ... [2023-11-21 22:16:18,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:18,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:18,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:18,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdba3d3-b4fb-41e1-b44e-fc4b0f6317a4/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:18,912 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 22:16:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 22:16:18,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:16:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:16:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:16:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:16:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:16:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:16:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:18,921 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:16:19,071 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:19,073 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:19,465 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:19,642 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:19,642 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:16:19,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:19 BoogieIcfgContainer [2023-11-21 22:16:19,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:19,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:19,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:19,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:19,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:18" (1/3) ... [2023-11-21 22:16:19,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f9b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:19, skipping insertion in model container [2023-11-21 22:16:19,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:18" (2/3) ... [2023-11-21 22:16:19,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f9b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:19, skipping insertion in model container [2023-11-21 22:16:19,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:19" (3/3) ... [2023-11-21 22:16:19,653 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec-pthread.i [2023-11-21 22:16:19,661 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:16:19,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:19,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:16:19,670 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:16:19,719 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:19,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions, 92 flow [2023-11-21 22:16:19,784 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2023-11-21 22:16:19,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:19,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 5/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-21 22:16:19,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions, 92 flow [2023-11-21 22:16:19,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 44 transitions, 92 flow [2023-11-21 22:16:19,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:19,810 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;@6422f874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:19,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:19,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:19,817 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-21 22:16:19,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:19,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:19,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:16:19,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 22:16:19,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 47032414, now seen corresponding path program 1 times [2023-11-21 22:16:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095061501] [2023-11-21 22:16:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:19,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:20,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:20,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:20,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-21 22:16:20,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-21 22:16:20,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-21 22:16:20,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-21 22:16:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:20,051 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:16:20,055 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:20,055 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:16:20,096 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 83 transitions, 176 flow [2023-11-21 22:16:20,125 INFO L124 PetriNetUnfolderBase]: 10/88 cut-off events. [2023-11-21 22:16:20,126 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:16:20,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 88 events. 10/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 303 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2023-11-21 22:16:20,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 83 transitions, 176 flow [2023-11-21 22:16:20,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 83 transitions, 176 flow [2023-11-21 22:16:20,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:20,136 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;@6422f874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:20,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:16:20,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:20,149 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-21 22:16:20,150 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:16:20,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:20,150 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-21 22:16:20,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:16:20,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1911515923, now seen corresponding path program 1 times [2023-11-21 22:16:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147326988] [2023-11-21 22:16:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:20,271 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:20,271 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-21 22:16:20,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-21 22:16:20,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-21 22:16:20,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-21 22:16:20,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-21 22:16:20,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-21 22:16:20,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-21 22:16:20,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:16:20,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:16:20,274 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:20,274 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:16:20,356 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 122 transitions, 262 flow [2023-11-21 22:16:20,465 INFO L124 PetriNetUnfolderBase]: 15/130 cut-off events. [2023-11-21 22:16:20,465 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:16:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 15/130 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 539 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2023-11-21 22:16:20,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 122 transitions, 262 flow [2023-11-21 22:16:20,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 122 transitions, 262 flow [2023-11-21 22:16:20,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:20,482 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;@6422f874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:20,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:16:20,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:20,501 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2023-11-21 22:16:20,501 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:16:20,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:20,501 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-21 22:16:20,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-21 22:16:20,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1707589699, now seen corresponding path program 1 times [2023-11-21 22:16:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493195177] [2023-11-21 22:16:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:20,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:20,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:20,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:16:20,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-21 22:16:20,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-21 22:16:20,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-21 22:16:20,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-11-21 22:16:20,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-11-21 22:16:20,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-11-21 22:16:20,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-21 22:16:20,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-21 22:16:20,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:20,620 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:16:20,621 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:20,621 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:16:20,677 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:20,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 161 transitions, 350 flow [2023-11-21 22:16:20,714 INFO L124 PetriNetUnfolderBase]: 20/172 cut-off events. [2023-11-21 22:16:20,714 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:16:20,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 172 events. 20/172 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 777 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 155. Up to 5 conditions per place. [2023-11-21 22:16:20,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 161 transitions, 350 flow [2023-11-21 22:16:20,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 161 transitions, 350 flow [2023-11-21 22:16:20,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:20,724 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;@6422f874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:20,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-21 22:16:20,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:20,738 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2023-11-21 22:16:20,739 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:16:20,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:20,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:20,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-21 22:16:20,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -59474718, now seen corresponding path program 1 times [2023-11-21 22:16:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250221893] [2023-11-21 22:16:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:20,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:20,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250221893] [2023-11-21 22:16:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250221893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:20,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:20,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939603370] [2023-11-21 22:16:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:21,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 161 [2023-11-21 22:16:21,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 161 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:21,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:21,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 161 [2023-11-21 22:16:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand