./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:48:57,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:48:57,233 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:48:57,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:48:57,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:48:57,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:48:57,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:48:57,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:48:57,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:48:57,263 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:48:57,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:48:57,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:48:57,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:48:57,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:48:57,265 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:48:57,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:48:57,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:48:57,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:48:57,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:48:57,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:48:57,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:48:57,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:48:57,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:48:57,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:48:57,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:48:57,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:48:57,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:48:57,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:48:57,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:48:57,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:48:57,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:48:57,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:48:57,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:48:57,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:57,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:48:57,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:48:57,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:48:57,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:48:57,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:48:57,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:48:57,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:48:57,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:48:57,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:48:57,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:48:57,277 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_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 [2023-11-29 01:48:57,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:48:57,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:48:57,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:48:57,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:48:57,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:48:57,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-29 01:49:00,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:49:00,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:49:00,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-29 01:49:00,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/data/472b84f01/234e5a97cfcc4da4b0a7f387d4509914/FLAG8d3b593ac [2023-11-29 01:49:00,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/data/472b84f01/234e5a97cfcc4da4b0a7f387d4509914 [2023-11-29 01:49:00,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:49:00,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:49:00,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:49:00,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:49:00,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:49:00,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:00,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3459eef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00, skipping insertion in model container [2023-11-29 01:49:00,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:00,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:49:00,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:49:00,908 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:49:00,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:49:00,983 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:49:00,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00 WrapperNode [2023-11-29 01:49:00,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:49:00,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:49:00,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:49:00,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:49:00,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,027 INFO L138 Inliner]: procedures = 165, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-11-29 01:49:01,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:49:01,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:49:01,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:49:01,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:49:01,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,056 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-29 01:49:01,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:49:01,072 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:49:01,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:49:01,072 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:49:01,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (1/1) ... [2023-11-29 01:49:01,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:49:01,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:01,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:49:01,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f97839e5-06db-413b-befa-5126d00aee65/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:49:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-29 01:49:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-29 01:49:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 01:49:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:49:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:49:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:49:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:49:01,139 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:49:01,258 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:49:01,260 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:49:01,430 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:49:01,540 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:49:01,540 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:49:01,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:49:01 BoogieIcfgContainer [2023-11-29 01:49:01,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:49:01,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:49:01,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:49:01,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:49:01,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:49:00" (1/3) ... [2023-11-29 01:49:01,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128c691f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:49:01, skipping insertion in model container [2023-11-29 01:49:01,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:49:00" (2/3) ... [2023-11-29 01:49:01,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128c691f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:49:01, skipping insertion in model container [2023-11-29 01:49:01,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:49:01" (3/3) ... [2023-11-29 01:49:01,550 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2023-11-29 01:49:01,556 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:49:01,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:49:01,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 01:49:01,565 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:49:01,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:49:01,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 01:49:01,664 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2023-11-29 01:49:01,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:49:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 2/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-29 01:49:01,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 01:49:01,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 43 transitions, 93 flow [2023-11-29 01:49:01,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:49:01,687 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;@6c94dde1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:49:01,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 01:49:01,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:49:01,696 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-29 01:49:01,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:49:01,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:01,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:01,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 01:49:01,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1296533632, now seen corresponding path program 1 times [2023-11-29 01:49:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709655783] [2023-11-29 01:49:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:49:01,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:49:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:49:01,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:49:01,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:49:01,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-29 01:49:01,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-29 01:49:01,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-29 01:49:01,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-29 01:49:01,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-29 01:49:01,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-29 01:49:01,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-29 01:49:01,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-29 01:49:01,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-29 01:49:01,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-29 01:49:01,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-29 01:49:01,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-29 01:49:01,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-29 01:49:01,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-29 01:49:01,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-29 01:49:01,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-29 01:49:01,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-29 01:49:01,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-29 01:49:01,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:49:01,874 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 01:49:01,878 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:49:01,878 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:49:01,922 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:49:01,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 182 flow [2023-11-29 01:49:01,951 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2023-11-29 01:49:01,951 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:49:01,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2023-11-29 01:49:01,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 182 flow [2023-11-29 01:49:01,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 157 flow [2023-11-29 01:49:01,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:49:01,958 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;@6c94dde1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:49:01,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 01:49:01,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:49:01,966 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-29 01:49:01,967 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:49:01,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:01,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:01,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-29 01:49:01,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1882980115, now seen corresponding path program 1 times [2023-11-29 01:49:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478946779] [2023-11-29 01:49:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478946779] [2023-11-29 01:49:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478946779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:49:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376045800] [2023-11-29 01:49:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:49:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:49:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:49:02,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2023-11-29 01:49:02,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2023-11-29 01:49:02,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:49:02,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2023-11-29 01:49:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:49:04,194 INFO L124 PetriNetUnfolderBase]: 9181/15996 cut-off events. [2023-11-29 01:49:04,195 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-11-29 01:49:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28960 conditions, 15996 events. 9181/15996 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 118671 event pairs, 2182 based on Foata normal form. 1991/16478 useless extension candidates. Maximal degree in co-relation 28949. Up to 10173 conditions per place. [2023-11-29 01:49:04,346 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 84 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-11-29 01:49:04,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 439 flow [2023-11-29 01:49:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:49:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:49:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2023-11-29 01:49:04,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2023-11-29 01:49:04,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 262 transitions. [2023-11-29 01:49:04,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 262 transitions. [2023-11-29 01:49:04,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:49:04,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 262 transitions. [2023-11-29 01:49:04,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2023-11-29 01:49:04,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2023-11-29 01:49:04,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2023-11-29 01:49:04,371 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 157 flow. Second operand 5 states and 262 transitions. [2023-11-29 01:49:04,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 439 flow [2023-11-29 01:49:04,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:49:04,380 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 196 flow [2023-11-29 01:49:04,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-11-29 01:49:04,385 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-11-29 01:49:04,386 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 196 flow [2023-11-29 01:49:04,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2023-11-29 01:49:04,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:04,386 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:49:04,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-29 01:49:04,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash 678743177, now seen corresponding path program 1 times [2023-11-29 01:49:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041772745] [2023-11-29 01:49:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:49:04,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:49:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:49:04,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:49:04,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:49:04,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-11-29 01:49:04,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-11-29 01:49:04,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-11-29 01:49:04,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-11-29 01:49:04,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-11-29 01:49:04,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-11-29 01:49:04,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-11-29 01:49:04,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-11-29 01:49:04,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-11-29 01:49:04,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2023-11-29 01:49:04,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-11-29 01:49:04,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-11-29 01:49:04,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2023-11-29 01:49:04,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2023-11-29 01:49:04,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-11-29 01:49:04,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-11-29 01:49:04,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-11-29 01:49:04,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-11-29 01:49:04,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-11-29 01:49:04,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-11-29 01:49:04,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-11-29 01:49:04,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-11-29 01:49:04,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-11-29 01:49:04,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-11-29 01:49:04,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-11-29 01:49:04,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-11-29 01:49:04,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:49:04,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:49:04,438 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:49:04,438 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:49:04,481 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:49:04,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 118 transitions, 272 flow [2023-11-29 01:49:04,499 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-11-29 01:49:04,499 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 01:49:04,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-11-29 01:49:04,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 118 transitions, 272 flow [2023-11-29 01:49:04,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 101 transitions, 223 flow [2023-11-29 01:49:04,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:49:04,503 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;@6c94dde1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:49:04,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-29 01:49:04,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:49:04,507 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-29 01:49:04,507 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:49:04,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:04,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:04,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-29 01:49:04,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1461261454, now seen corresponding path program 1 times [2023-11-29 01:49:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:04,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980626706] [2023-11-29 01:49:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980626706] [2023-11-29 01:49:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980626706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:49:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213283482] [2023-11-29 01:49:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:49:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:49:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:49:04,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2023-11-29 01:49:04,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2023-11-29 01:49:04,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:49:04,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2023-11-29 01:49:04,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:49:26,028 INFO L124 PetriNetUnfolderBase]: 193529/301752 cut-off events. [2023-11-29 01:49:26,028 INFO L125 PetriNetUnfolderBase]: For 7134/7134 co-relation queries the response was YES. [2023-11-29 01:49:26,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553845 conditions, 301752 events. 193529/301752 cut-off events. For 7134/7134 co-relation queries the response was YES. Maximal size of possible extension queue 7243. Compared 2771793 event pairs, 47152 based on Foata normal form. 30132/302676 useless extension candidates. Maximal degree in co-relation 553833. Up to 218309 conditions per place. [2023-11-29 01:49:28,020 INFO L140 encePairwiseOnDemand]: 109/118 looper letters, 136 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-11-29 01:49:28,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 710 flow [2023-11-29 01:49:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:49:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:49:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-11-29 01:49:28,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2023-11-29 01:49:28,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-11-29 01:49:28,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-11-29 01:49:28,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:49:28,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-11-29 01:49:28,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2023-11-29 01:49:28,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2023-11-29 01:49:28,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2023-11-29 01:49:28,031 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 223 flow. Second operand 5 states and 396 transitions. [2023-11-29 01:49:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 710 flow [2023-11-29 01:49:28,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 185 transitions, 701 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 01:49:28,046 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 277 flow [2023-11-29 01:49:28,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2023-11-29 01:49:28,047 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2023-11-29 01:49:28,047 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 277 flow [2023-11-29 01:49:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2023-11-29 01:49:28,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:28,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:49:28,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-29 01:49:28,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash 182064564, now seen corresponding path program 1 times [2023-11-29 01:49:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:28,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012162852] [2023-11-29 01:49:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012162852] [2023-11-29 01:49:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012162852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137678736] [2023-11-29 01:49:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:28,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:49:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:49:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:49:28,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2023-11-29 01:49:28,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2023-11-29 01:49:28,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:49:28,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2023-11-29 01:49:28,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:49:53,663 INFO L124 PetriNetUnfolderBase]: 224569/345884 cut-off events. [2023-11-29 01:49:53,663 INFO L125 PetriNetUnfolderBase]: For 47566/48094 co-relation queries the response was YES. [2023-11-29 01:49:54,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674669 conditions, 345884 events. 224569/345884 cut-off events. For 47566/48094 co-relation queries the response was YES. Maximal size of possible extension queue 8388. Compared 3171329 event pairs, 51532 based on Foata normal form. 3372/314456 useless extension candidates. Maximal degree in co-relation 674653. Up to 227737 conditions per place. [2023-11-29 01:49:55,841 INFO L140 encePairwiseOnDemand]: 110/118 looper letters, 175 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2023-11-29 01:49:55,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 224 transitions, 934 flow [2023-11-29 01:49:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:49:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:49:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-11-29 01:49:55,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2023-11-29 01:49:55,845 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-11-29 01:49:55,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-11-29 01:49:55,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:49:55,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-11-29 01:49:55,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 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) [2023-11-29 01:49:55,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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) [2023-11-29 01:49:55,851 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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) [2023-11-29 01:49:55,851 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 277 flow. Second operand 6 states and 462 transitions. [2023-11-29 01:49:55,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 224 transitions, 934 flow [2023-11-29 01:49:57,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 224 transitions, 934 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:49:57,295 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 316 flow [2023-11-29 01:49:57,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2023-11-29 01:49:57,297 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2023-11-29 01:49:57,297 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 316 flow [2023-11-29 01:49:57,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2023-11-29 01:49:57,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:57,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:57,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:49:57,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-29 01:49:57,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1716919004, now seen corresponding path program 1 times [2023-11-29 01:49:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899984550] [2023-11-29 01:49:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:49:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899984550] [2023-11-29 01:49:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899984550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:57,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:57,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:49:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80882025] [2023-11-29 01:49:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:57,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:49:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:49:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:49:57,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2023-11-29 01:49:57,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-29 01:49:57,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:49:57,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2023-11-29 01:49:57,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:50:23,121 INFO L124 PetriNetUnfolderBase]: 220337/344044 cut-off events. [2023-11-29 01:50:23,121 INFO L125 PetriNetUnfolderBase]: For 90466/97270 co-relation queries the response was YES. [2023-11-29 01:50:23,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685749 conditions, 344044 events. 220337/344044 cut-off events. For 90466/97270 co-relation queries the response was YES. Maximal size of possible extension queue 8516. Compared 3231477 event pairs, 56557 based on Foata normal form. 8892/324580 useless extension candidates. Maximal degree in co-relation 685729. Up to 251965 conditions per place. [2023-11-29 01:50:25,408 INFO L140 encePairwiseOnDemand]: 111/118 looper letters, 139 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2023-11-29 01:50:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 192 transitions, 852 flow [2023-11-29 01:50:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:50:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:50:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-11-29 01:50:25,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559322033898305 [2023-11-29 01:50:25,410 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-11-29 01:50:25,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-11-29 01:50:25,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:50:25,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-11-29 01:50:25,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-11-29 01:50:25,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2023-11-29 01:50:25,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2023-11-29 01:50:25,414 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 316 flow. Second operand 5 states and 387 transitions. [2023-11-29 01:50:25,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 192 transitions, 852 flow [2023-11-29 01:50:26,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 192 transitions, 834 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:50:26,336 INFO L231 Difference]: Finished difference. Result has 122 places, 113 transitions, 382 flow [2023-11-29 01:50:26,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2023-11-29 01:50:26,337 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 15 predicate places. [2023-11-29 01:50:26,337 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 382 flow [2023-11-29 01:50:26,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-29 01:50:26,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:50:26,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:50:26,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-29 01:50:26,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1349034694, now seen corresponding path program 1 times [2023-11-29 01:50:26,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115580470] [2023-11-29 01:50:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115580470] [2023-11-29 01:50:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115580470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:26,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115617559] [2023-11-29 01:50:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:50:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:50:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:50:26,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2023-11-29 01:50:26,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2023-11-29 01:50:26,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:50:26,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2023-11-29 01:50:26,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand