./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:58,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:58,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:59:58,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:58,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:58,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:58,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:58,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:58,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:58,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:58,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:58,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:58,134 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:58,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:58,136 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:58,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:58,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:58,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:58,138 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:58,139 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:58,139 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:59:58,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:58,141 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:58,141 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:58,142 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:58,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:58,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:58,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:58,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:58,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:58,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:58,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:58,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:58,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:58,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:58,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:58,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:58,159 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:58,159 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_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 [2023-11-19 07:59:58,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:58,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:58,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:58,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:58,521 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:58,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i [2023-11-19 08:00:01,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:02,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:02,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/sv-benchmarks/c/pthread-wmm/safe015_power.oepc.i [2023-11-19 08:00:02,115 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/data/5561b796c/2bb119e0f2d54f32b10cc164efe1afa4/FLAG90b1297fd [2023-11-19 08:00:02,128 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/data/5561b796c/2bb119e0f2d54f32b10cc164efe1afa4 [2023-11-19 08:00:02,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:02,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:02,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:02,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:02,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:02,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618f0313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:02, skipping insertion in model container [2023-11-19 08:00:02,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:02" (1/1) ... [2023-11-19 08:00:02,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:02,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:02,907 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:03,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:03,076 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:03,076 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:03,084 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:03,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03 WrapperNode [2023-11-19 08:00:03,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:03,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:03,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:03,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:03,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,197 INFO L138 Inliner]: procedures = 176, calls = 87, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 236 [2023-11-19 08:00:03,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:03,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:03,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:03,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:03,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:03,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:03,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:03,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:03,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ... [2023-11-19 08:00:03,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:03,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:03,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cc5a6d-36b4-4541-9194-1c9fd90393b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:00:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:00:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:00:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:00:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:00:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:00:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:00:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:00:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:03,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:03,424 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:00:03,587 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:03,589 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:04,456 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:05,497 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:05,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:00:05,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:05 BoogieIcfgContainer [2023-11-19 08:00:05,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:05,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:05,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:05,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:05,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:02" (1/3) ... [2023-11-19 08:00:05,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b65ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:05, skipping insertion in model container [2023-11-19 08:00:05,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (2/3) ... [2023-11-19 08:00:05,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b65ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:05, skipping insertion in model container [2023-11-19 08:00:05,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:05" (3/3) ... [2023-11-19 08:00:05,520 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_power.oepc.i [2023-11-19 08:00:05,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:05,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-19 08:00:05,542 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:05,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:05,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 261 transitions, 534 flow [2023-11-19 08:00:06,114 INFO L124 PetriNetUnfolderBase]: 64/258 cut-off events. [2023-11-19 08:00:06,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:06,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 258 events. 64/258 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 473 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-11-19 08:00:06,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 261 transitions, 534 flow [2023-11-19 08:00:06,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 258 transitions, 525 flow [2023-11-19 08:00:06,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:06,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 258 transitions, 525 flow [2023-11-19 08:00:06,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 258 transitions, 525 flow [2023-11-19 08:00:06,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 258 transitions, 525 flow [2023-11-19 08:00:06,303 INFO L124 PetriNetUnfolderBase]: 64/258 cut-off events. [2023-11-19 08:00:06,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:06,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 258 events. 64/258 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 469 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-11-19 08:00:06,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 23446 [2023-11-19 08:00:35,458 INFO L134 LiptonReduction]: Checked pairs total: 70084 [2023-11-19 08:00:35,458 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-11-19 08:00:35,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:35,506 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3b82d65e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:35,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2023-11-19 08:00:35,510 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:35,510 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:00:35,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:35,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:35,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:00:35,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2023-11-19 08:00:35,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1730, now seen corresponding path program 1 times [2023-11-19 08:00:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024115856] [2023-11-19 08:00:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:35,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024115856] [2023-11-19 08:00:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024115856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:35,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:00:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761797779] [2023-11-19 08:00:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:35,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:35,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:35,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 547 [2023-11-19 08:00:35,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 195 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:35,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:35,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 547 [2023-11-19 08:00:35,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:44,794 INFO L124 PetriNetUnfolderBase]: 27605/39096 cut-off events. [2023-11-19 08:00:44,794 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-19 08:00:44,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77629 conditions, 39096 events. 27605/39096 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 3011. Compared 272687 event pairs, 27605 based on Foata normal form. 0/16322 useless extension candidates. Maximal degree in co-relation 77618. Up to 38383 conditions per place. [2023-11-19 08:00:45,193 INFO L140 encePairwiseOnDemand]: 505/547 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-11-19 08:00:45,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 201 flow [2023-11-19 08:00:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:00:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 347 transitions. [2023-11-19 08:00:45,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3171846435100548 [2023-11-19 08:00:45,218 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 347 transitions. [2023-11-19 08:00:45,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 347 transitions. [2023-11-19 08:00:45,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:45,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 347 transitions. [2023-11-19 08:00:45,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,242 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,245 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 195 flow. Second operand 2 states and 347 transitions. [2023-11-19 08:00:45,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 201 flow [2023-11-19 08:00:45,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:00:45,256 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 104 flow [2023-11-19 08:00:45,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-19 08:00:45,263 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -44 predicate places. [2023-11-19 08:00:45,264 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 104 flow [2023-11-19 08:00:45,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:45,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:00:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:45,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2023-11-19 08:00:45,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash 52913235, now seen corresponding path program 1 times [2023-11-19 08:00:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131567774] [2023-11-19 08:00:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:45,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131567774] [2023-11-19 08:00:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131567774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:45,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:45,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303324532] [2023-11-19 08:00:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:45,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 547 [2023-11-19 08:00:45,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:45,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 547 [2023-11-19 08:00:45,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:48,992 INFO L124 PetriNetUnfolderBase]: 10352/14948 cut-off events. [2023-11-19 08:00:48,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29651 conditions, 14948 events. 10352/14948 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 92973 event pairs, 10352 based on Foata normal form. 0/8084 useless extension candidates. Maximal degree in co-relation 29648. Up to 14598 conditions per place. [2023-11-19 08:00:49,084 INFO L140 encePairwiseOnDemand]: 537/547 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-19 08:00:49,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 162 flow [2023-11-19 08:00:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-19 08:00:49,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2626447288238879 [2023-11-19 08:00:49,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-19 08:00:49,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-19 08:00:49,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:49,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-19 08:00:49,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,098 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 104 flow. Second operand 3 states and 431 transitions. [2023-11-19 08:00:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 162 flow [2023-11-19 08:00:49,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:49,100 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 88 flow [2023-11-19 08:00:49,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-19 08:00:49,102 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -51 predicate places. [2023-11-19 08:00:49,102 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 88 flow [2023-11-19 08:00:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:00:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:49,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 102 more)] === [2023-11-19 08:00:49,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 52913234, now seen corresponding path program 1 times [2023-11-19 08:00:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:49,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398681890] [2023-11-19 08:00:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398681890] [2023-11-19 08:00:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398681890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:49,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:49,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865730312] [2023-11-19 08:00:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:49,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:49,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 547 [2023-11-19 08:00:49,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:49,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 547 [2023-11-19 08:00:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand