./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/02_inc_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/02_inc_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB --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 ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:32:56,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:32:56,596 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:32:56,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:32:56,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:32:56,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:32:56,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:32:56,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:32:56,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:32:56,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:32:56,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:32:56,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:32:56,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:32:56,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:32:56,659 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:32:56,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:32:56,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:32:56,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:32:56,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:32:56,662 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:32:56,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:32:56,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:32:56,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:32:56,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:32:56,664 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2024-11-28 04:32:57,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:32:57,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:32:57,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:32:57,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:32:57,114 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:32:57,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-28 04:33:00,822 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d6278a62/2744b002d02a4ec88f82c011be0ae22e/FLAGbcfb7c335 [2024-11-28 04:33:01,226 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:33:01,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-28 04:33:01,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d6278a62/2744b002d02a4ec88f82c011be0ae22e/FLAGbcfb7c335 [2024-11-28 04:33:01,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/data/0d6278a62/2744b002d02a4ec88f82c011be0ae22e [2024-11-28 04:33:01,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:33:01,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:33:01,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:33:01,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:33:01,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:33:01,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:01,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3038d6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01, skipping insertion in model container [2024-11-28 04:33:01,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:01,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:33:01,795 WARN L250 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_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/sv-benchmarks/c/pthread-ext/02_inc_cas.i[30873,30886] [2024-11-28 04:33:01,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:33:01,816 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:33:01,893 WARN L250 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_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/sv-benchmarks/c/pthread-ext/02_inc_cas.i[30873,30886] [2024-11-28 04:33:01,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:33:01,958 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:33:01,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01 WrapperNode [2024-11-28 04:33:01,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:33:01,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:33:01,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:33:01,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:33:01,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:01,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,015 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-11-28 04:33:02,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:33:02,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:33:02,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:33:02,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:33:02,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,056 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-28 04:33:02,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,064 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:33:02,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:33:02,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:33:02,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:33:02,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (1/1) ... [2024-11-28 04:33:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:33:02,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:33:02,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:33:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbbc2d30-2d1d-4b3c-a8b6-3c3a3a0ce9d3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:33:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:33:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:33:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:33:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 04:33:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 04:33:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:33:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:33:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:33:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:33:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:33:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:33:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:33:02,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:33:02,157 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:33:02,349 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:33:02,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:33:02,644 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:33:02,644 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:33:02,852 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:33:02,853 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:33:02,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:02 BoogieIcfgContainer [2024-11-28 04:33:02,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:33:02,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:33:02,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:33:02,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:33:02,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:33:01" (1/3) ... [2024-11-28 04:33:02,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:33:02, skipping insertion in model container [2024-11-28 04:33:02,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:01" (2/3) ... [2024-11-28 04:33:02,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:33:02, skipping insertion in model container [2024-11-28 04:33:02,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:02" (3/3) ... [2024-11-28 04:33:02,879 INFO L128 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2024-11-28 04:33:02,901 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:33:02,904 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 02_inc_cas.i that has 2 procedures, 16 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:33:02,905 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:33:03,008 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:33:03,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 19 transitions, 42 flow [2024-11-28 04:33:03,123 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-28 04:33:03,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:33:03,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-28 04:33:03,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 19 transitions, 42 flow [2024-11-28 04:33:03,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 19 transitions, 42 flow [2024-11-28 04:33:03,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:33:03,222 INFO L333 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, 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;@708ac6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:33:03,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 04:33:03,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:33:03,237 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-28 04:33:03,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:33:03,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:03,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:33:03,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:33:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1733209805, now seen corresponding path program 1 times [2024-11-28 04:33:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655959487] [2024-11-28 04:33:03,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:03,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:03,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655959487] [2024-11-28 04:33:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655959487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:33:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468407943] [2024-11-28 04:33:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:03,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:33:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:03,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:33:03,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:33:03,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-11-28 04:33:03,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 19 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-28 04:33:03,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:03,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-11-28 04:33:03,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:03,660 INFO L124 PetriNetUnfolderBase]: 22/58 cut-off events. [2024-11-28 04:33:03,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:33:03,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 58 events. 22/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 16 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 102. Up to 52 conditions per place. [2024-11-28 04:33:03,663 INFO L140 encePairwiseOnDemand]: 17/19 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2024-11-28 04:33:03,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 66 flow [2024-11-28 04:33:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:33:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 04:33:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 22 transitions. [2024-11-28 04:33:03,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-28 04:33:03,685 INFO L175 Difference]: Start difference. First operand has 19 places, 19 transitions, 42 flow. Second operand 2 states and 22 transitions. [2024-11-28 04:33:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 66 flow [2024-11-28 04:33:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:03,698 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 38 flow [2024-11-28 04:33:03,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-28 04:33:03,707 INFO L279 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2024-11-28 04:33:03,709 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 38 flow [2024-11-28 04:33:03,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-28 04:33:03,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:03,710 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:33:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:33:03,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:33:03,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1733199802, now seen corresponding path program 1 times [2024-11-28 04:33:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:03,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409095680] [2024-11-28 04:33:03,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:03,762 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:33:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:03,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:33:03,829 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:33:03,831 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-28 04:33:03,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-28 04:33:03,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-28 04:33:03,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:33:03,844 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:33:03,850 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:33:03,851 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:33:03,909 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:33:03,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 76 flow [2024-11-28 04:33:03,938 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-28 04:33:03,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:33:03,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2024-11-28 04:33:03,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 33 transitions, 76 flow [2024-11-28 04:33:03,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 33 transitions, 76 flow [2024-11-28 04:33:03,944 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:33:03,945 INFO L333 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, 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;@708ac6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:33:03,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 04:33:03,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:33:03,954 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:33:03,955 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:33:03,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:03,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:33:03,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-28 04:33:03,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1585103251, now seen corresponding path program 1 times [2024-11-28 04:33:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:03,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144612999] [2024-11-28 04:33:03,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:04,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144612999] [2024-11-28 04:33:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144612999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:04,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:33:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832706813] [2024-11-28 04:33:04,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:04,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:33:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:04,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:33:04,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:33:04,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 04:33:04,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-28 04:33:04,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:04,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 04:33:04,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:04,447 INFO L124 PetriNetUnfolderBase]: 490/822 cut-off events. [2024-11-28 04:33:04,448 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 04:33:04,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 822 events. 490/822 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3295 event pairs, 376 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 1143. Up to 763 conditions per place. [2024-11-28 04:33:04,463 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 25 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-11-28 04:33:04,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 120 flow [2024-11-28 04:33:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:33:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 04:33:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2024-11-28 04:33:04,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-11-28 04:33:04,468 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 76 flow. Second operand 2 states and 38 transitions. [2024-11-28 04:33:04,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 120 flow [2024-11-28 04:33:04,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:04,471 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 70 flow [2024-11-28 04:33:04,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-28 04:33:04,474 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-11-28 04:33:04,475 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 70 flow [2024-11-28 04:33:04,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-28 04:33:04,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:04,476 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 04:33:04,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:33:04,476 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-28 04:33:04,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash 672544019, now seen corresponding path program 1 times [2024-11-28 04:33:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857912791] [2024-11-28 04:33:04,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:04,556 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:33:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:04,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:33:04,591 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:33:04,591 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 04:33:04,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-28 04:33:04,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-28 04:33:04,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-28 04:33:04,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:33:04,592 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:33:04,594 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:33:04,594 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:33:04,673 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:33:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2024-11-28 04:33:04,693 INFO L124 PetriNetUnfolderBase]: 9/55 cut-off events. [2024-11-28 04:33:04,693 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:33:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 9/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2024-11-28 04:33:04,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 47 transitions, 112 flow [2024-11-28 04:33:04,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-11-28 04:33:04,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:33:04,702 INFO L333 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, 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;@708ac6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:33:04,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 04:33:04,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:33:04,709 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:33:04,710 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:33:04,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:04,711 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:33:04,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:33:04,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -194293536, now seen corresponding path program 1 times [2024-11-28 04:33:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109347675] [2024-11-28 04:33:04,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:04,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:04,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109347675] [2024-11-28 04:33:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109347675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:04,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:04,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:33:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822700515] [2024-11-28 04:33:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:04,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:33:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:04,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:33:04,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:33:04,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 47 [2024-11-28 04:33:04,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-28 04:33:04,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:04,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 47 [2024-11-28 04:33:04,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:06,492 INFO L124 PetriNetUnfolderBase]: 7132/10110 cut-off events. [2024-11-28 04:33:06,492 INFO L125 PetriNetUnfolderBase]: For 563/563 co-relation queries the response was YES. [2024-11-28 04:33:06,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20059 conditions, 10110 events. 7132/10110 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 50533 event pairs, 5560 based on Foata normal form. 0/7656 useless extension candidates. Maximal degree in co-relation 4545. Up to 9592 conditions per place. [2024-11-28 04:33:06,583 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-28 04:33:06,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 176 flow [2024-11-28 04:33:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:33:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 04:33:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-28 04:33:06,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-28 04:33:06,585 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 2 states and 54 transitions. [2024-11-28 04:33:06,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 176 flow [2024-11-28 04:33:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:06,591 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 102 flow [2024-11-28 04:33:06,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-28 04:33:06,594 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-11-28 04:33:06,595 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 102 flow [2024-11-28 04:33:06,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-28 04:33:06,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:06,595 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:06,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:33:06,597 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:33:06,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1022099002, now seen corresponding path program 1 times [2024-11-28 04:33:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099559395] [2024-11-28 04:33:06,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:06,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:07,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099559395] [2024-11-28 04:33:07,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099559395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:07,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:07,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:33:07,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492348214] [2024-11-28 04:33:07,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:07,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:33:07,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:07,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:33:07,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:33:07,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 47 [2024-11-28 04:33:07,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-11-28 04:33:07,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:07,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 47 [2024-11-28 04:33:07,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:10,930 INFO L124 PetriNetUnfolderBase]: 13598/19312 cut-off events. [2024-11-28 04:33:10,930 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2024-11-28 04:33:10,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38269 conditions, 19312 events. 13598/19312 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 108649 event pairs, 2539 based on Foata normal form. 0/15124 useless extension candidates. Maximal degree in co-relation 38263. Up to 8176 conditions per place. [2024-11-28 04:33:11,082 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 127 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2024-11-28 04:33:11,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 146 transitions, 628 flow [2024-11-28 04:33:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:33:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:33:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-11-28 04:33:11,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-11-28 04:33:11,087 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 102 flow. Second operand 6 states and 177 transitions. [2024-11-28 04:33:11,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 146 transitions, 628 flow [2024-11-28 04:33:11,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 146 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:11,100 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 186 flow [2024-11-28 04:33:11,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2024-11-28 04:33:11,102 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-11-28 04:33:11,102 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 186 flow [2024-11-28 04:33:11,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-11-28 04:33:11,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:11,103 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:33:11,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:33:11,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:33:11,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash -186451015, now seen corresponding path program 1 times [2024-11-28 04:33:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64953219] [2024-11-28 04:33:11,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:11,127 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:33:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:33:11,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:33:11,153 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:33:11,154 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 04:33:11,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-28 04:33:11,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-28 04:33:11,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 04:33:11,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 04:33:11,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:33:11,154 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 04:33:11,155 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:33:11,155 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 04:33:11,227 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:33:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 150 flow [2024-11-28 04:33:11,248 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2024-11-28 04:33:11,248 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 04:33:11,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 72 events. 12/72 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 67. Up to 5 conditions per place. [2024-11-28 04:33:11,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 61 transitions, 150 flow [2024-11-28 04:33:11,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 61 transitions, 150 flow [2024-11-28 04:33:11,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:33:11,254 INFO L333 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, 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;@708ac6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:33:11,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 04:33:11,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:33:11,258 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:33:11,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:33:11,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:11,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:33:11,258 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:33:11,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1610697472, now seen corresponding path program 1 times [2024-11-28 04:33:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:11,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533324169] [2024-11-28 04:33:11,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533324169] [2024-11-28 04:33:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533324169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:11,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:11,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:33:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143573766] [2024-11-28 04:33:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:11,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:33:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:11,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:33:11,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:33:11,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 61 [2024-11-28 04:33:11,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-28 04:33:11,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:11,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 61 [2024-11-28 04:33:11,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:22,097 INFO L124 PetriNetUnfolderBase]: 88780/115578 cut-off events. [2024-11-28 04:33:22,097 INFO L125 PetriNetUnfolderBase]: For 8840/8840 co-relation queries the response was YES. [2024-11-28 04:33:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230504 conditions, 115578 events. 88780/115578 cut-off events. For 8840/8840 co-relation queries the response was YES. Maximal size of possible extension queue 2633. Compared 648013 event pairs, 69712 based on Foata normal form. 0/86097 useless extension candidates. Maximal degree in co-relation 20145. Up to 110923 conditions per place. [2024-11-28 04:33:22,864 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 47 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2024-11-28 04:33:22,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 234 flow [2024-11-28 04:33:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:33:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 04:33:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-28 04:33:22,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-28 04:33:22,869 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 150 flow. Second operand 2 states and 70 transitions. [2024-11-28 04:33:22,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 234 flow [2024-11-28 04:33:22,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:22,886 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 134 flow [2024-11-28 04:33:22,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-28 04:33:22,888 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2024-11-28 04:33:22,889 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 134 flow [2024-11-28 04:33:22,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-28 04:33:22,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:22,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:22,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:33:22,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:33:22,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1696945446, now seen corresponding path program 1 times [2024-11-28 04:33:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:22,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347928995] [2024-11-28 04:33:22,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:23,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:23,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347928995] [2024-11-28 04:33:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347928995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:23,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:33:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318241661] [2024-11-28 04:33:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:23,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:33:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:23,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:33:23,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:33:23,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-28 04:33:23,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-28 04:33:23,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:23,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-28 04:33:23,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:33:40,490 INFO L124 PetriNetUnfolderBase]: 172436/224374 cut-off events. [2024-11-28 04:33:40,491 INFO L125 PetriNetUnfolderBase]: For 5321/5321 co-relation queries the response was YES. [2024-11-28 04:33:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445868 conditions, 224374 events. 172436/224374 cut-off events. For 5321/5321 co-relation queries the response was YES. Maximal size of possible extension queue 5223. Compared 1373318 event pairs, 31567 based on Foata normal form. 0/171730 useless extension candidates. Maximal degree in co-relation 445861. Up to 98389 conditions per place. [2024-11-28 04:33:41,836 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 179 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2024-11-28 04:33:41,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 203 transitions, 878 flow [2024-11-28 04:33:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:33:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:33:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2024-11-28 04:33:41,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 04:33:41,839 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 134 flow. Second operand 6 states and 244 transitions. [2024-11-28 04:33:41,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 203 transitions, 878 flow [2024-11-28 04:33:41,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 878 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:33:41,858 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 239 flow [2024-11-28 04:33:41,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2024-11-28 04:33:41,861 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-28 04:33:41,862 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 239 flow [2024-11-28 04:33:41,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-28 04:33:41,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:33:41,863 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:41,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:33:41,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:33:41,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1848617254, now seen corresponding path program 1 times [2024-11-28 04:33:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:33:41,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354855210] [2024-11-28 04:33:41,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:33:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354855210] [2024-11-28 04:33:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354855210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:42,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:33:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067044802] [2024-11-28 04:33:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:42,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:33:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:42,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:33:42,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:33:42,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-28 04:33:42,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2024-11-28 04:33:42,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:33:42,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-28 04:33:42,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand