./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX --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 a3cd4be37ada319d324d40d8d6c18fff519996a186a93f33b3070275487295e3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:21:22,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:21:22,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:21:22,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:21:22,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:21:22,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:21:22,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:21:22,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:21:22,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:21:22,387 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:21:22,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:21:22,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:21:22,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:21:22,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:21:22,390 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:21:22,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:21:22,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:21:22,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:21:22,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:21:22,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:21:22,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:21:22,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:21:22,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:21:22,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:21:22,395 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:21:22,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:21:22,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:21:22,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:21:22,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:21:22,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:21:22,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:21:22,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:21:22,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:21:22,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:21:22,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:21:22,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:21:22,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:21:22,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:21:22,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:21:22,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:21:22,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:21:22,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:21:22,410 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_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3cd4be37ada319d324d40d8d6c18fff519996a186a93f33b3070275487295e3 [2024-11-08 16:21:22,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:21:22,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:21:22,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:21:22,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:21:22,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:21:22,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-atomic/szymanski.i Unable to find full path for "g++" [2024-11-08 16:21:25,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:21:25,524 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:21:25,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/sv-benchmarks/c/pthread-atomic/szymanski.i [2024-11-08 16:21:25,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/data/3277fc59c/7ddab1562a6340308ed52376dcc225be/FLAG398bfd668 [2024-11-08 16:21:25,566 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/data/3277fc59c/7ddab1562a6340308ed52376dcc225be [2024-11-08 16:21:25,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:21:25,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:21:25,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:21:25,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:21:25,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:21:25,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:21:25" (1/1) ... [2024-11-08 16:21:25,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bee2a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:25, skipping insertion in model container [2024-11-08 16:21:25,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:21:25" (1/1) ... [2024-11-08 16:21:25,633 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:21:26,084 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_2ada3086-68cf-4979-8b9d-f4640e66542f/sv-benchmarks/c/pthread-atomic/szymanski.i[32419,32432] [2024-11-08 16:21:26,097 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_2ada3086-68cf-4979-8b9d-f4640e66542f/sv-benchmarks/c/pthread-atomic/szymanski.i[32696,32709] [2024-11-08 16:21:26,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:21:26,120 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:21:26,188 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_2ada3086-68cf-4979-8b9d-f4640e66542f/sv-benchmarks/c/pthread-atomic/szymanski.i[32419,32432] [2024-11-08 16:21:26,193 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_2ada3086-68cf-4979-8b9d-f4640e66542f/sv-benchmarks/c/pthread-atomic/szymanski.i[32696,32709] [2024-11-08 16:21:26,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:21:26,248 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:21:26,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26 WrapperNode [2024-11-08 16:21:26,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:21:26,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:21:26,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:21:26,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:21:26,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,318 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-11-08 16:21:26,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:21:26,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:21:26,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:21:26,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:21:26,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,371 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:21:26,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:21:26,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:21:26,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:21:26,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:21:26,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (1/1) ... [2024-11-08 16:21:26,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:21:26,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:26,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:21:26,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:21:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-08 16:21:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-08 16:21:26,484 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 16:21:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 16:21:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:21:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:21:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:21:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:21:26,487 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:21:26,696 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:21:26,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:21:26,899 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:21:26,899 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:21:26,983 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:21:26,983 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:21:26,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:21:26 BoogieIcfgContainer [2024-11-08 16:21:26,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:21:26,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:21:26,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:21:26,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:21:26,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:21:25" (1/3) ... [2024-11-08 16:21:26,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583bea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:21:26, skipping insertion in model container [2024-11-08 16:21:26,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:21:26" (2/3) ... [2024-11-08 16:21:26,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583bea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:21:26, skipping insertion in model container [2024-11-08 16:21:26,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:21:26" (3/3) ... [2024-11-08 16:21:26,997 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2024-11-08 16:21:27,012 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:21:27,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:21:27,013 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:21:27,072 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:21:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 70 transitions, 154 flow [2024-11-08 16:21:27,169 INFO L124 PetriNetUnfolderBase]: 20/68 cut-off events. [2024-11-08 16:21:27,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:21:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 20/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2024-11-08 16:21:27,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 70 transitions, 154 flow [2024-11-08 16:21:27,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 66 transitions, 141 flow [2024-11-08 16:21:27,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:21:27,198 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;@285b3de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:21:27,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 16:21:27,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:21:27,229 INFO L124 PetriNetUnfolderBase]: 15/47 cut-off events. [2024-11-08 16:21:27,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:21:27,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:27,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:27,231 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:27,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 481705778, now seen corresponding path program 1 times [2024-11-08 16:21:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:27,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422956883] [2024-11-08 16:21:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422956883] [2024-11-08 16:21:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422956883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473285428] [2024-11-08 16:21:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:27,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:27,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 70 [2024-11-08 16:21:27,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-08 16:21:27,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:27,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 70 [2024-11-08 16:21:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:27,729 INFO L124 PetriNetUnfolderBase]: 92/253 cut-off events. [2024-11-08 16:21:27,729 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-08 16:21:27,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 253 events. 92/253 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1075 event pairs, 16 based on Foata normal form. 35/223 useless extension candidates. Maximal degree in co-relation 324. Up to 53 conditions per place. [2024-11-08 16:21:27,735 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 14 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-08 16:21:27,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 184 flow [2024-11-08 16:21:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-11-08 16:21:27,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8761904761904762 [2024-11-08 16:21:27,761 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 141 flow. Second operand 3 states and 184 transitions. [2024-11-08 16:21:27,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 184 flow [2024-11-08 16:21:27,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 177 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:21:27,769 INFO L231 Difference]: Finished difference. Result has 54 places, 65 transitions, 152 flow [2024-11-08 16:21:27,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=54, PETRI_TRANSITIONS=65} [2024-11-08 16:21:27,775 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-11-08 16:21:27,775 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 65 transitions, 152 flow [2024-11-08 16:21:27,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-11-08 16:21:27,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:27,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:27,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:21:27,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:27,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1287019354, now seen corresponding path program 1 times [2024-11-08 16:21:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:27,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732541780] [2024-11-08 16:21:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732541780] [2024-11-08 16:21:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732541780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:27,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:27,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679612956] [2024-11-08 16:21:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:27,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:27,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 70 [2024-11-08 16:21:27,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:27,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:27,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 70 [2024-11-08 16:21:27,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:28,003 INFO L124 PetriNetUnfolderBase]: 108/289 cut-off events. [2024-11-08 16:21:28,003 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-08 16:21:28,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 289 events. 108/289 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1252 event pairs, 28 based on Foata normal form. 13/231 useless extension candidates. Maximal degree in co-relation 229. Up to 80 conditions per place. [2024-11-08 16:21:28,007 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 14 selfloop transitions, 2 changer transitions 1/69 dead transitions. [2024-11-08 16:21:28,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 195 flow [2024-11-08 16:21:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-08 16:21:28,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.861904761904762 [2024-11-08 16:21:28,010 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 152 flow. Second operand 3 states and 181 transitions. [2024-11-08 16:21:28,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 195 flow [2024-11-08 16:21:28,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:21:28,013 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 156 flow [2024-11-08 16:21:28,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2024-11-08 16:21:28,014 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-11-08 16:21:28,014 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 156 flow [2024-11-08 16:21:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:28,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:28,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:28,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:21:28,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -873265777, now seen corresponding path program 1 times [2024-11-08 16:21:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056691957] [2024-11-08 16:21:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:28,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:28,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056691957] [2024-11-08 16:21:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056691957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:28,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410681387] [2024-11-08 16:21:28,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:28,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:28,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:28,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:28,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:28,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 70 [2024-11-08 16:21:28,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:28,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:28,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 70 [2024-11-08 16:21:28,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:28,382 INFO L124 PetriNetUnfolderBase]: 349/762 cut-off events. [2024-11-08 16:21:28,382 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-08 16:21:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 762 events. 349/762 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3912 event pairs, 124 based on Foata normal form. 47/663 useless extension candidates. Maximal degree in co-relation 742. Up to 318 conditions per place. [2024-11-08 16:21:28,391 INFO L140 encePairwiseOnDemand]: 56/70 looper letters, 25 selfloop transitions, 7 changer transitions 2/77 dead transitions. [2024-11-08 16:21:28,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 251 flow [2024-11-08 16:21:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-08 16:21:28,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8238095238095238 [2024-11-08 16:21:28,396 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 156 flow. Second operand 3 states and 173 transitions. [2024-11-08 16:21:28,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 251 flow [2024-11-08 16:21:28,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:21:28,403 INFO L231 Difference]: Finished difference. Result has 58 places, 71 transitions, 220 flow [2024-11-08 16:21:28,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=58, PETRI_TRANSITIONS=71} [2024-11-08 16:21:28,405 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-11-08 16:21:28,405 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 71 transitions, 220 flow [2024-11-08 16:21:28,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:28,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:28,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:28,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:21:28,406 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:28,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1628570463, now seen corresponding path program 2 times [2024-11-08 16:21:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:28,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830450909] [2024-11-08 16:21:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830450909] [2024-11-08 16:21:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830450909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:28,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:28,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56467971] [2024-11-08 16:21:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:28,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:28,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:28,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 70 [2024-11-08 16:21:28,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:28,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:28,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 70 [2024-11-08 16:21:28,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:28,678 INFO L124 PetriNetUnfolderBase]: 416/889 cut-off events. [2024-11-08 16:21:28,678 INFO L125 PetriNetUnfolderBase]: For 424/457 co-relation queries the response was YES. [2024-11-08 16:21:28,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 889 events. 416/889 cut-off events. For 424/457 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4680 event pairs, 100 based on Foata normal form. 38/758 useless extension candidates. Maximal degree in co-relation 1051. Up to 242 conditions per place. [2024-11-08 16:21:28,684 INFO L140 encePairwiseOnDemand]: 56/70 looper letters, 28 selfloop transitions, 11 changer transitions 2/84 dead transitions. [2024-11-08 16:21:28,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 347 flow [2024-11-08 16:21:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-08 16:21:28,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2024-11-08 16:21:28,687 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 220 flow. Second operand 3 states and 172 transitions. [2024-11-08 16:21:28,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 347 flow [2024-11-08 16:21:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:21:28,693 INFO L231 Difference]: Finished difference. Result has 60 places, 78 transitions, 298 flow [2024-11-08 16:21:28,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=60, PETRI_TRANSITIONS=78} [2024-11-08 16:21:28,694 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-11-08 16:21:28,695 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 78 transitions, 298 flow [2024-11-08 16:21:28,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:28,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:28,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:28,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:21:28,696 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:28,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2045313473, now seen corresponding path program 3 times [2024-11-08 16:21:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:28,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916759564] [2024-11-08 16:21:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916759564] [2024-11-08 16:21:28,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916759564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:28,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:28,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389945509] [2024-11-08 16:21:28,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:28,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:28,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:28,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 70 [2024-11-08 16:21:28,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 78 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-11-08 16:21:28,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:28,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 70 [2024-11-08 16:21:28,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:28,913 INFO L124 PetriNetUnfolderBase]: 476/948 cut-off events. [2024-11-08 16:21:28,914 INFO L125 PetriNetUnfolderBase]: For 1079/1092 co-relation queries the response was YES. [2024-11-08 16:21:28,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 948 events. 476/948 cut-off events. For 1079/1092 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4956 event pairs, 185 based on Foata normal form. 41/806 useless extension candidates. Maximal degree in co-relation 1419. Up to 515 conditions per place. [2024-11-08 16:21:28,920 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 34 selfloop transitions, 5 changer transitions 3/84 dead transitions. [2024-11-08 16:21:28,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 399 flow [2024-11-08 16:21:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-11-08 16:21:28,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2024-11-08 16:21:28,922 INFO L175 Difference]: Start difference. First operand has 60 places, 78 transitions, 298 flow. Second operand 3 states and 170 transitions. [2024-11-08 16:21:28,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 399 flow [2024-11-08 16:21:28,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:21:28,932 INFO L231 Difference]: Finished difference. Result has 62 places, 77 transitions, 318 flow [2024-11-08 16:21:28,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=62, PETRI_TRANSITIONS=77} [2024-11-08 16:21:28,935 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-11-08 16:21:28,935 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 77 transitions, 318 flow [2024-11-08 16:21:28,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-11-08 16:21:28,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:21:28,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:28,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:21:28,936 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:21:28,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash 357784349, now seen corresponding path program 4 times [2024-11-08 16:21:28,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:28,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885211694] [2024-11-08 16:21:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:29,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885211694] [2024-11-08 16:21:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885211694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:21:29,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:21:29,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:21:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536988418] [2024-11-08 16:21:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:21:29,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:21:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:21:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:21:29,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 70 [2024-11-08 16:21:29,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:29,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:21:29,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 70 [2024-11-08 16:21:29,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:21:29,248 INFO L124 PetriNetUnfolderBase]: 595/1176 cut-off events. [2024-11-08 16:21:29,249 INFO L125 PetriNetUnfolderBase]: For 419/470 co-relation queries the response was YES. [2024-11-08 16:21:29,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1176 events. 595/1176 cut-off events. For 419/470 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6439 event pairs, 159 based on Foata normal form. 95/1169 useless extension candidates. Maximal degree in co-relation 1470. Up to 424 conditions per place. [2024-11-08 16:21:29,254 INFO L140 encePairwiseOnDemand]: 56/70 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2024-11-08 16:21:29,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 401 flow [2024-11-08 16:21:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:21:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:21:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-08 16:21:29,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8238095238095238 [2024-11-08 16:21:29,256 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 318 flow. Second operand 3 states and 173 transitions. [2024-11-08 16:21:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 401 flow [2024-11-08 16:21:29,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 385 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 16:21:29,263 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-11-08 16:21:29,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-11-08 16:21:29,265 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-11-08 16:21:29,266 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-11-08 16:21:29,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-08 16:21:29,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-11-08 16:21:29,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-08 16:21:29,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-08 16:21:29,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-08 16:21:29,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-08 16:21:29,271 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-08 16:21:29,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:21:29,273 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2024-11-08 16:21:29,282 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 16:21:29,283 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:21:29,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:21:29 BasicIcfg [2024-11-08 16:21:29,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:21:29,291 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:21:29,292 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:21:29,292 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:21:29,292 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:21:26" (3/4) ... [2024-11-08 16:21:29,294 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 16:21:29,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2024-11-08 16:21:29,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-11-08 16:21:29,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-08 16:21:29,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-08 16:21:29,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-08 16:21:29,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 16:21:29,401 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 16:21:29,402 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 16:21:29,402 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:21:29,403 INFO L158 Benchmark]: Toolchain (without parser) took 3831.88ms. Allocated memory is still 178.3MB. Free memory was 143.8MB in the beginning and 129.0MB in the end (delta: 14.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,404 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 125.8MB. Free memory was 72.1MB in the beginning and 71.9MB in the end (delta: 178.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:21:29,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.33ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 120.6MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.65ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 118.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,405 INFO L158 Benchmark]: Boogie Preprocessor took 78.02ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 116.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,406 INFO L158 Benchmark]: RCFGBuilder took 579.26ms. Allocated memory is still 178.3MB. Free memory was 116.9MB in the beginning and 99.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,406 INFO L158 Benchmark]: TraceAbstraction took 2301.31ms. Allocated memory is still 178.3MB. Free memory was 99.0MB in the beginning and 133.2MB in the end (delta: -34.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,407 INFO L158 Benchmark]: Witness Printer took 110.72ms. Allocated memory is still 178.3MB. Free memory was 133.2MB in the beginning and 129.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:21:29,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 125.8MB. Free memory was 72.1MB in the beginning and 71.9MB in the end (delta: 178.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.33ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 120.6MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.65ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 118.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.02ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 116.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 579.26ms. Allocated memory is still 178.3MB. Free memory was 116.9MB in the beginning and 99.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2301.31ms. Allocated memory is still 178.3MB. Free memory was 99.0MB in the beginning and 133.2MB in the end (delta: -34.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 110.72ms. Allocated memory is still 178.3MB. Free memory was 133.2MB in the beginning and 129.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 744]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 89 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 16:21:29,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ada3086-68cf-4979-8b9d-f4640e66542f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE