./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:10:27,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:10:27,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:10:27,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:10:27,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:10:27,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:10:27,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:10:27,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:10:27,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:10:27,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:10:27,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:10:27,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:10:27,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:10:27,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:10:27,169 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:10:27,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:10:27,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:10:27,169 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:10:27,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:10:27,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:10:27,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:10:27,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:10:27,173 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:10:27,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:10:27,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:10:27,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:10:27,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:10:27,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:10:27,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:10:27,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:10:27,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:10:27,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:10:27,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:10:27,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:10:27,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:10:27,176 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:10:27,177 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2024-11-28 03:10:27,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:10:27,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:10:27,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:10:27,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:10:27,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:10:27,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2024-11-28 03:10:30,528 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f3bbe4721/ecf47824e109483ea537e084ed0e71a7/FLAGd7be3f4a9 [2024-11-28 03:10:30,872 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:10:30,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2024-11-28 03:10:30,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f3bbe4721/ecf47824e109483ea537e084ed0e71a7/FLAGd7be3f4a9 [2024-11-28 03:10:30,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/data/f3bbe4721/ecf47824e109483ea537e084ed0e71a7 [2024-11-28 03:10:30,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:10:30,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:10:30,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:10:30,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:10:30,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:10:30,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:30" (1/1) ... [2024-11-28 03:10:30,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440840c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:30, skipping insertion in model container [2024-11-28 03:10:30,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:30" (1/1) ... [2024-11-28 03:10:30,990 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:10:31,197 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_d702a207-90da-462d-abb4-e2e6ebaa80a8/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2024-11-28 03:10:31,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:10:31,393 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:10:31,404 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_d702a207-90da-462d-abb4-e2e6ebaa80a8/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2024-11-28 03:10:31,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:10:31,511 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:10:31,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31 WrapperNode [2024-11-28 03:10:31,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:10:31,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:10:31,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:10:31,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:10:31,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,568 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-28 03:10:31,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:10:31,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:10:31,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:10:31,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:10:31,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,602 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]. [2024-11-28 03:10:31,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,612 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:10:31,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:10:31,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:10:31,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:10:31,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (1/1) ... [2024-11-28 03:10:31,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:10:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:31,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:10:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:10:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:10:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:10:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-28 03:10:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-28 03:10:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-28 03:10:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-28 03:10:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-28 03:10:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-28 03:10:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:10:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:10:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:10:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:10:31,699 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:10:31,817 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:10:31,820 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:10:32,007 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:10:32,007 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:10:32,109 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:10:32,110 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:10:32,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:32 BoogieIcfgContainer [2024-11-28 03:10:32,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:10:32,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:10:32,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:10:32,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:10:32,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:30" (1/3) ... [2024-11-28 03:10:32,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637c1563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:32, skipping insertion in model container [2024-11-28 03:10:32,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:31" (2/3) ... [2024-11-28 03:10:32,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637c1563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:32, skipping insertion in model container [2024-11-28 03:10:32,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:32" (3/3) ... [2024-11-28 03:10:32,126 INFO L128 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2024-11-28 03:10:32,144 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:10:32,145 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe003_tso.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:10:32,146 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:10:32,230 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:10:32,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-28 03:10:32,355 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-28 03:10:32,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:10:32,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-28 03:10:32,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-28 03:10:32,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-28 03:10:32,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:10:32,393 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;@47679f95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:10:32,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 03:10:32,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:10:32,409 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-28 03:10:32,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:10:32,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:32,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:32,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:32,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 958553775, now seen corresponding path program 1 times [2024-11-28 03:10:32,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256629477] [2024-11-28 03:10:32,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:33,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:33,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256629477] [2024-11-28 03:10:33,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256629477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:33,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:10:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681208361] [2024-11-28 03:10:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:33,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:10:33,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:33,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:10:33,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:10:33,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-28 03:10:33,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:33,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:33,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-28 03:10:33,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:34,085 INFO L124 PetriNetUnfolderBase]: 1188/2237 cut-off events. [2024-11-28 03:10:34,085 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 03:10:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 2237 events. 1188/2237 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15773 event pairs, 328 based on Foata normal form. 79/2269 useless extension candidates. Maximal degree in co-relation 4118. Up to 765 conditions per place. [2024-11-28 03:10:34,116 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-11-28 03:10:34,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-11-28 03:10:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:10:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:10:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-28 03:10:34,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-11-28 03:10:34,169 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-11-28 03:10:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-11-28 03:10:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:10:34,184 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-11-28 03:10:34,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-28 03:10:34,195 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-28 03:10:34,195 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-11-28 03:10:34,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:34,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:34,195 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:34,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:10:34,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:34,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1253896208, now seen corresponding path program 1 times [2024-11-28 03:10:34,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:34,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393976766] [2024-11-28 03:10:34,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393976766] [2024-11-28 03:10:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393976766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:34,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:10:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540820911] [2024-11-28 03:10:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:34,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:10:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:34,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:10:34,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:10:34,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-28 03:10:34,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:34,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:34,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-28 03:10:34,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:35,259 INFO L124 PetriNetUnfolderBase]: 846/1746 cut-off events. [2024-11-28 03:10:35,260 INFO L125 PetriNetUnfolderBase]: For 1798/1803 co-relation queries the response was YES. [2024-11-28 03:10:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 1746 events. 846/1746 cut-off events. For 1798/1803 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12460 event pairs, 209 based on Foata normal form. 69/1779 useless extension candidates. Maximal degree in co-relation 4650. Up to 358 conditions per place. [2024-11-28 03:10:35,277 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 33 selfloop transitions, 6 changer transitions 50/102 dead transitions. [2024-11-28 03:10:35,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 102 transitions, 640 flow [2024-11-28 03:10:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:10:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:10:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-11-28 03:10:35,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6236842105263158 [2024-11-28 03:10:35,284 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 237 transitions. [2024-11-28 03:10:35,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 102 transitions, 640 flow [2024-11-28 03:10:35,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 584 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 03:10:35,308 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 198 flow [2024-11-28 03:10:35,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-11-28 03:10:35,310 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-28 03:10:35,310 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 198 flow [2024-11-28 03:10:35,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:35,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:35,311 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:35,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:10:35,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:35,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:35,313 INFO L85 PathProgramCache]: Analyzing trace with hash -114621907, now seen corresponding path program 1 times [2024-11-28 03:10:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:35,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558639302] [2024-11-28 03:10:35,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:35,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:35,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558639302] [2024-11-28 03:10:35,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558639302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:35,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:35,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:10:35,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863511455] [2024-11-28 03:10:35,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:35,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:10:35,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:35,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:10:35,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:35,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-28 03:10:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:35,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-28 03:10:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:36,137 INFO L124 PetriNetUnfolderBase]: 744/1625 cut-off events. [2024-11-28 03:10:36,137 INFO L125 PetriNetUnfolderBase]: For 2943/2943 co-relation queries the response was YES. [2024-11-28 03:10:36,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 1625 events. 744/1625 cut-off events. For 2943/2943 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11876 event pairs, 116 based on Foata normal form. 30/1608 useless extension candidates. Maximal degree in co-relation 4470. Up to 556 conditions per place. [2024-11-28 03:10:36,149 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 35 selfloop transitions, 9 changer transitions 38/95 dead transitions. [2024-11-28 03:10:36,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 672 flow [2024-11-28 03:10:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:10:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:10:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-11-28 03:10:36,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6286549707602339 [2024-11-28 03:10:36,153 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 198 flow. Second operand 9 states and 215 transitions. [2024-11-28 03:10:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 672 flow [2024-11-28 03:10:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 603 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-11-28 03:10:36,169 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 200 flow [2024-11-28 03:10:36,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2024-11-28 03:10:36,171 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-11-28 03:10:36,171 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 200 flow [2024-11-28 03:10:36,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:36,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:36,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:36,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:10:36,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:36,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1803196892, now seen corresponding path program 1 times [2024-11-28 03:10:36,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:36,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856491685] [2024-11-28 03:10:36,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:36,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856491685] [2024-11-28 03:10:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856491685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:10:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190336133] [2024-11-28 03:10:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:36,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:10:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:36,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:10:36,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:36,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-28 03:10:36,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:36,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:36,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-28 03:10:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:36,834 INFO L124 PetriNetUnfolderBase]: 494/1155 cut-off events. [2024-11-28 03:10:36,835 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2024-11-28 03:10:36,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 1155 events. 494/1155 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8326 event pairs, 124 based on Foata normal form. 20/1149 useless extension candidates. Maximal degree in co-relation 3112. Up to 315 conditions per place. [2024-11-28 03:10:36,847 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 32 selfloop transitions, 8 changer transitions 21/74 dead transitions. [2024-11-28 03:10:36,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 496 flow [2024-11-28 03:10:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:10:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:10:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-11-28 03:10:36,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6353383458646616 [2024-11-28 03:10:36,850 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 200 flow. Second operand 7 states and 169 transitions. [2024-11-28 03:10:36,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 496 flow [2024-11-28 03:10:36,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 387 flow, removed 34 selfloop flow, removed 17 redundant places. [2024-11-28 03:10:36,864 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 159 flow [2024-11-28 03:10:36,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2024-11-28 03:10:36,867 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-11-28 03:10:36,867 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 159 flow [2024-11-28 03:10:36,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:36,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:36,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:36,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:10:36,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:36,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 625082506, now seen corresponding path program 2 times [2024-11-28 03:10:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348997185] [2024-11-28 03:10:36,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:10:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:36,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:10:36,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:10:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348997185] [2024-11-28 03:10:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348997185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:37,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:10:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385611313] [2024-11-28 03:10:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:37,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:10:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:37,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:10:37,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:37,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-28 03:10:37,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:37,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:37,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-28 03:10:37,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:37,424 INFO L124 PetriNetUnfolderBase]: 234/553 cut-off events. [2024-11-28 03:10:37,425 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-28 03:10:37,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 553 events. 234/553 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3296 event pairs, 47 based on Foata normal form. 12/550 useless extension candidates. Maximal degree in co-relation 1356. Up to 150 conditions per place. [2024-11-28 03:10:37,429 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 23 selfloop transitions, 4 changer transitions 33/73 dead transitions. [2024-11-28 03:10:37,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 391 flow [2024-11-28 03:10:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:10:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:10:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-11-28 03:10:37,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815789473684211 [2024-11-28 03:10:37,431 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 159 flow. Second operand 10 states and 221 transitions. [2024-11-28 03:10:37,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 391 flow [2024-11-28 03:10:37,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 351 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-28 03:10:37,434 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 120 flow [2024-11-28 03:10:37,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=120, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2024-11-28 03:10:37,435 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-11-28 03:10:37,435 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 120 flow [2024-11-28 03:10:37,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:37,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:10:37,436 INFO L206 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] [2024-11-28 03:10:37,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:10:37,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:10:37,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 522342750, now seen corresponding path program 1 times [2024-11-28 03:10:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677203083] [2024-11-28 03:10:37,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:10:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677203083] [2024-11-28 03:10:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677203083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:10:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:10:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719355664] [2024-11-28 03:10:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:37,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:10:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:37,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:10:37,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:37,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-28 03:10:37,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:37,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:10:37,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-28 03:10:37,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:10:37,929 INFO L124 PetriNetUnfolderBase]: 133/288 cut-off events. [2024-11-28 03:10:37,930 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-28 03:10:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 288 events. 133/288 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1289 event pairs, 53 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 710. Up to 106 conditions per place. [2024-11-28 03:10:37,931 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-11-28 03:10:37,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 232 flow [2024-11-28 03:10:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:10:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:10:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-11-28 03:10:37,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-11-28 03:10:37,933 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 120 flow. Second operand 8 states and 159 transitions. [2024-11-28 03:10:37,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 232 flow [2024-11-28 03:10:37,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 195 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-28 03:10:37,935 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-11-28 03:10:37,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-11-28 03:10:37,936 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-28 03:10:37,936 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-11-28 03:10:37,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:10:37,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-28 03:10:37,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-28 03:10:37,940 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-28 03:10:37,940 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-28 03:10:37,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:10:37,940 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-28 03:10:37,944 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:10:37,945 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:10:37,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:37 BasicIcfg [2024-11-28 03:10:37,951 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:10:37,952 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:10:37,952 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:10:37,952 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:10:37,953 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:32" (3/4) ... [2024-11-28 03:10:37,955 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:10:37,959 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-28 03:10:37,959 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-28 03:10:37,959 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-28 03:10:37,963 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-28 03:10:37,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 03:10:37,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:10:37,964 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 03:10:38,053 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:10:38,054 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:10:38,054 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:10:38,057 INFO L158 Benchmark]: Toolchain (without parser) took 7144.57ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 83.8MB in the beginning and 209.2MB in the end (delta: -125.4MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,057 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:38,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.52ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 63.6MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.79ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,059 INFO L158 Benchmark]: Boogie Preprocessor took 57.77ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 60.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:10:38,060 INFO L158 Benchmark]: RCFGBuilder took 483.85ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 42.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,060 INFO L158 Benchmark]: TraceAbstraction took 5836.48ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 41.5MB in the beginning and 214.5MB in the end (delta: -173.0MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,060 INFO L158 Benchmark]: Witness Printer took 102.07ms. Allocated memory is still 293.6MB. Free memory was 214.5MB in the beginning and 209.2MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:10:38,062 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.52ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 63.6MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.79ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.77ms. Allocated memory is still 117.4MB. Free memory was 62.0MB in the beginning and 60.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 483.85ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 42.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5836.48ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 41.5MB in the beginning and 214.5MB in the end (delta: -173.0MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 102.07ms. Allocated memory is still 293.6MB. Free memory was 214.5MB in the beginning and 209.2MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 62 locations, 4 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: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 367 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 641 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 72 mSDtfsCounter, 641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=3, InterpolantAutomatonStates: 51, 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, 2.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:10:38,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d702a207-90da-462d-abb4-e2e6ebaa80a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE