./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/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_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/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_53992966-2072-4127-8844-c0f8d402b12a/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 23eea01b75afdbb0ef381e4ddf0b030c295f59ec7a283af707e459bd9dd9c0c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:53,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:53,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:38:53,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:53,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:53,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:53,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:53,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:53,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:53,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:53,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:53,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:53,645 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:53,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:53,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:53,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:53,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:53,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:53,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:38:53,650 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:38:53,650 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:38:53,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:53,652 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:38:53,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:38:53,653 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:53,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:53,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:53,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:53,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:53,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:53,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:53,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:53,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:53,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:53,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:53,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:53,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:53,669 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:53,670 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_53992966-2072-4127-8844-c0f8d402b12a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23eea01b75afdbb0ef381e4ddf0b030c295f59ec7a283af707e459bd9dd9c0c0 [2023-11-19 07:38:53,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:54,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:54,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:54,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:54,026 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:54,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe000_power.opt.i [2023-11-19 07:38:57,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:57,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:57,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/sv-benchmarks/c/pthread-wmm/safe000_power.opt.i [2023-11-19 07:38:57,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/data/0b8aac1cb/1167e084bb704d9d9bda1ad50c7da53f/FLAG0a2ea18e5 [2023-11-19 07:38:57,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/data/0b8aac1cb/1167e084bb704d9d9bda1ad50c7da53f [2023-11-19 07:38:57,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:57,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:57,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:57,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:57,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:57,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:57" (1/1) ... [2023-11-19 07:38:57,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1933e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:57, skipping insertion in model container [2023-11-19 07:38:57,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:57" (1/1) ... [2023-11-19 07:38:57,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:58,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:58,068 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:58,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:58,258 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:58,258 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:58,267 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:58,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58 WrapperNode [2023-11-19 07:38:58,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:58,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:58,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:58,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:58,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,377 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 186 [2023-11-19 07:38:58,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:58,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:58,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:58,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:58,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:58,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:58,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:58,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:58,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (1/1) ... [2023-11-19 07:38:58,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:58,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:58,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:58,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53992966-2072-4127-8844-c0f8d402b12a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:38:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:38:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:38:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:38:58,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:38:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:38:58,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:38:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:38:58,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:38:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:38:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:58,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:58,567 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 07:38:58,752 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:58,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:59,521 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:00,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:00,233 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:39:00,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:00 BoogieIcfgContainer [2023-11-19 07:39:00,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:00,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:00,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:00,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:00,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:57" (1/3) ... [2023-11-19 07:39:00,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202c5ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:00, skipping insertion in model container [2023-11-19 07:39:00,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:58" (2/3) ... [2023-11-19 07:39:00,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202c5ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:00, skipping insertion in model container [2023-11-19 07:39:00,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:00" (3/3) ... [2023-11-19 07:39:00,251 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.opt.i [2023-11-19 07:39:00,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:00,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-11-19 07:39:00,279 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:00,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:00,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 223 transitions, 458 flow [2023-11-19 07:39:00,674 INFO L124 PetriNetUnfolderBase]: 47/220 cut-off events. [2023-11-19 07:39:00,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 220 events. 47/220 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 314 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 163. Up to 4 conditions per place. [2023-11-19 07:39:00,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 223 transitions, 458 flow [2023-11-19 07:39:00,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 220 transitions, 449 flow [2023-11-19 07:39:00,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:00,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 220 transitions, 449 flow [2023-11-19 07:39:00,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 220 transitions, 449 flow [2023-11-19 07:39:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 220 transitions, 449 flow [2023-11-19 07:39:00,791 INFO L124 PetriNetUnfolderBase]: 47/220 cut-off events. [2023-11-19 07:39:00,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:00,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 220 events. 47/220 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 314 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 163. Up to 4 conditions per place. [2023-11-19 07:39:00,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 15088 [2023-11-19 07:39:16,022 INFO L134 LiptonReduction]: Checked pairs total: 40250 [2023-11-19 07:39:16,022 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-11-19 07:39:16,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:16,046 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;@14d07fd3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:16,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-19 07:39:16,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:16,049 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:39:16,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:16,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:16,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:39:16,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:16,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1343, now seen corresponding path program 1 times [2023-11-19 07:39:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773187268] [2023-11-19 07:39:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,197 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 07:39:16,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:16,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773187268] [2023-11-19 07:39:16,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773187268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:39:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482858996] [2023-11-19 07:39:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:16,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 462 [2023-11-19 07:39:16,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 153 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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 07:39:16,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:16,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 462 [2023-11-19 07:39:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:24,907 INFO L124 PetriNetUnfolderBase]: 31868/44397 cut-off events. [2023-11-19 07:39:24,907 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:39:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88823 conditions, 44397 events. 31868/44397 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 317072 event pairs, 31868 based on Foata normal form. 1500/19471 useless extension candidates. Maximal degree in co-relation 88812. Up to 44200 conditions per place. [2023-11-19 07:39:25,446 INFO L140 encePairwiseOnDemand]: 440/462 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-11-19 07:39:25,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 201 flow [2023-11-19 07:39:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:39:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 329 transitions. [2023-11-19 07:39:25,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2023-11-19 07:39:25,470 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 329 transitions. [2023-11-19 07:39:25,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 329 transitions. [2023-11-19 07:39:25,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:25,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 329 transitions. [2023-11-19 07:39:25,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 164.5) internal successors, (329), 2 states have internal predecessors, (329), 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 07:39:25,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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 07:39:25,491 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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 07:39:25,493 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 153 flow. Second operand 2 states and 329 transitions. [2023-11-19 07:39:25,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 201 flow [2023-11-19 07:39:25,505 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 07:39:25,508 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 104 flow [2023-11-19 07:39:25,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, 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 07:39:25,514 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -23 predicate places. [2023-11-19 07:39:25,514 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 104 flow [2023-11-19 07:39:25,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 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 07:39:25,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:25,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:39:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:25,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 41014291, now seen corresponding path program 1 times [2023-11-19 07:39:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087108193] [2023-11-19 07:39:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:25,941 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 07:39:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087108193] [2023-11-19 07:39:25,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087108193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:25,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:25,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538557339] [2023-11-19 07:39:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:25,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:25,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 462 [2023-11-19 07:39:25,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:39:25,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:25,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 462 [2023-11-19 07:39:25,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:32,164 INFO L124 PetriNetUnfolderBase]: 28558/39698 cut-off events. [2023-11-19 07:39:32,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79557 conditions, 39698 events. 28558/39698 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3081. Compared 302916 event pairs, 5388 based on Foata normal form. 0/16862 useless extension candidates. Maximal degree in co-relation 79554. Up to 31802 conditions per place. [2023-11-19 07:39:32,404 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 80 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-19 07:39:32,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 342 flow [2023-11-19 07:39:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-11-19 07:39:32,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33910533910533913 [2023-11-19 07:39:32,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-11-19 07:39:32,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-11-19 07:39:32,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:32,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-11-19 07:39:32,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 07:39:32,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:32,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:32,425 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 104 flow. Second operand 3 states and 470 transitions. [2023-11-19 07:39:32,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 342 flow [2023-11-19 07:39:32,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:32,430 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 106 flow [2023-11-19 07:39:32,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-19 07:39:32,434 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -22 predicate places. [2023-11-19 07:39:32,435 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 106 flow [2023-11-19 07:39:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:39:32,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:32,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:32,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:32,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1271450752, now seen corresponding path program 1 times [2023-11-19 07:39:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784624303] [2023-11-19 07:39:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:32,774 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 07:39:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784624303] [2023-11-19 07:39:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784624303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:32,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799015197] [2023-11-19 07:39:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:32,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:32,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 462 [2023-11-19 07:39:32,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 07:39:32,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:32,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 462 [2023-11-19 07:39:32,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:35,556 INFO L124 PetriNetUnfolderBase]: 9714/13809 cut-off events. [2023-11-19 07:39:35,557 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-19 07:39:35,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28203 conditions, 13809 events. 9714/13809 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 86315 event pairs, 9714 based on Foata normal form. 0/7776 useless extension candidates. Maximal degree in co-relation 28199. Up to 13705 conditions per place. [2023-11-19 07:39:35,642 INFO L140 encePairwiseOnDemand]: 452/462 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-19 07:39:35,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 162 flow [2023-11-19 07:39:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:39:35,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3124098124098124 [2023-11-19 07:39:35,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:39:35,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:39:35,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:35,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:39:35,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 07:39:35,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:35,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:35,654 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 106 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:39:35,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 162 flow [2023-11-19 07:39:35,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:35,656 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 86 flow [2023-11-19 07:39:35,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-19 07:39:35,658 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -31 predicate places. [2023-11-19 07:39:35,658 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 86 flow [2023-11-19 07:39:35,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 07:39:35,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:35,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:35,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1271450548, now seen corresponding path program 1 times [2023-11-19 07:39:35,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103082367] [2023-11-19 07:39:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:35,747 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 07:39:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103082367] [2023-11-19 07:39:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103082367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837046270] [2023-11-19 07:39:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:35,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 462 [2023-11-19 07:39:35,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 07:39:35,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:35,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 462 [2023-11-19 07:39:35,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:36,945 INFO L124 PetriNetUnfolderBase]: 5214/8038 cut-off events. [2023-11-19 07:39:36,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:36,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15977 conditions, 8038 events. 5214/8038 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 50860 event pairs, 3032 based on Foata normal form. 0/6033 useless extension candidates. Maximal degree in co-relation 15973. Up to 3982 conditions per place. [2023-11-19 07:39:36,977 INFO L140 encePairwiseOnDemand]: 444/462 looper letters, 39 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2023-11-19 07:39:36,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 204 flow [2023-11-19 07:39:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-19 07:39:36,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2023-11-19 07:39:36,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-19 07:39:36,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-19 07:39:36,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:36,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-19 07:39:36,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 07:39:36,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:36,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:36,989 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 86 flow. Second operand 3 states and 435 transitions. [2023-11-19 07:39:36,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 204 flow [2023-11-19 07:39:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:36,991 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 159 flow [2023-11-19 07:39:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-19 07:39:36,992 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -30 predicate places. [2023-11-19 07:39:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 159 flow [2023-11-19 07:39:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 07:39:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:36,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:36,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:36,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 689854743, now seen corresponding path program 1 times [2023-11-19 07:39:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:36,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506327295] [2023-11-19 07:39:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:37,461 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 07:39:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506327295] [2023-11-19 07:39:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506327295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:37,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357311020] [2023-11-19 07:39:37,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:37,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:37,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 462 [2023-11-19 07:39:37,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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 07:39:37,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:37,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 462 [2023-11-19 07:39:37,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:39,099 INFO L124 PetriNetUnfolderBase]: 5203/8060 cut-off events. [2023-11-19 07:39:39,099 INFO L125 PetriNetUnfolderBase]: For 2382/2421 co-relation queries the response was YES. [2023-11-19 07:39:39,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21993 conditions, 8060 events. 5203/8060 cut-off events. For 2382/2421 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 52006 event pairs, 2354 based on Foata normal form. 0/6765 useless extension candidates. Maximal degree in co-relation 21988. Up to 7698 conditions per place. [2023-11-19 07:39:39,159 INFO L140 encePairwiseOnDemand]: 455/462 looper letters, 67 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-19 07:39:39,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 451 flow [2023-11-19 07:39:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2023-11-19 07:39:39,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2981601731601732 [2023-11-19 07:39:39,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2023-11-19 07:39:39,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2023-11-19 07:39:39,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:39,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2023-11-19 07:39:39,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 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 07:39:39,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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 07:39:39,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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 07:39:39,173 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 159 flow. Second operand 4 states and 551 transitions. [2023-11-19 07:39:39,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 451 flow [2023-11-19 07:39:39,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:39,219 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 238 flow [2023-11-19 07:39:39,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-11-19 07:39:39,222 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -27 predicate places. [2023-11-19 07:39:39,222 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 238 flow [2023-11-19 07:39:39,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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 07:39:39,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:39,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:39,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:39,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:39,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 689854330, now seen corresponding path program 1 times [2023-11-19 07:39:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080868246] [2023-11-19 07:39:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:39,379 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 07:39:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080868246] [2023-11-19 07:39:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080868246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:39,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775266767] [2023-11-19 07:39:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:39,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 462 [2023-11-19 07:39:39,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:39:39,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:39,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 462 [2023-11-19 07:39:39,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:40,631 INFO L124 PetriNetUnfolderBase]: 5101/7962 cut-off events. [2023-11-19 07:39:40,631 INFO L125 PetriNetUnfolderBase]: For 2398/2423 co-relation queries the response was YES. [2023-11-19 07:39:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22296 conditions, 7962 events. 5101/7962 cut-off events. For 2398/2423 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 51834 event pairs, 1969 based on Foata normal form. 0/6265 useless extension candidates. Maximal degree in co-relation 22289. Up to 6122 conditions per place. [2023-11-19 07:39:40,681 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 72 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2023-11-19 07:39:40,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 490 flow [2023-11-19 07:39:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 07:39:40,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217893217893218 [2023-11-19 07:39:40,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 07:39:40,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 07:39:40,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:40,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 07:39:40,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 07:39:40,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:40,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:40,692 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 238 flow. Second operand 3 states and 446 transitions. [2023-11-19 07:39:40,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 490 flow [2023-11-19 07:39:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:40,727 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 263 flow [2023-11-19 07:39:40,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-19 07:39:40,728 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -24 predicate places. [2023-11-19 07:39:40,728 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 263 flow [2023-11-19 07:39:40,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:39:40,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:40,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:40,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:40,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:40,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 529059275, now seen corresponding path program 1 times [2023-11-19 07:39:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042074931] [2023-11-19 07:39:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:41,026 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 07:39:41,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042074931] [2023-11-19 07:39:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042074931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699301048] [2023-11-19 07:39:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:41,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 462 [2023-11-19 07:39:41,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 07:39:41,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:41,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 462 [2023-11-19 07:39:41,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:42,351 INFO L124 PetriNetUnfolderBase]: 5090/8017 cut-off events. [2023-11-19 07:39:42,351 INFO L125 PetriNetUnfolderBase]: For 3563/3563 co-relation queries the response was YES. [2023-11-19 07:39:42,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23172 conditions, 8017 events. 5090/8017 cut-off events. For 3563/3563 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 52109 event pairs, 1918 based on Foata normal form. 4/6389 useless extension candidates. Maximal degree in co-relation 23163. Up to 7481 conditions per place. [2023-11-19 07:39:42,409 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 76 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-11-19 07:39:42,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 579 flow [2023-11-19 07:39:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-11-19 07:39:42,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3189033189033189 [2023-11-19 07:39:42,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-11-19 07:39:42,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-11-19 07:39:42,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:42,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-11-19 07:39:42,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 07:39:42,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:42,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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 07:39:42,421 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 263 flow. Second operand 3 states and 442 transitions. [2023-11-19 07:39:42,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 579 flow [2023-11-19 07:39:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:42,475 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 324 flow [2023-11-19 07:39:42,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-19 07:39:42,476 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -23 predicate places. [2023-11-19 07:39:42,476 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 324 flow [2023-11-19 07:39:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 07:39:42,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:42,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:42,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:42,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-19 07:39:42,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash -89339620, now seen corresponding path program 1 times [2023-11-19 07:39:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658171732] [2023-11-19 07:39:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:42,856 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 07:39:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:42,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658171732] [2023-11-19 07:39:42,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658171732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:42,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:42,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955606257] [2023-11-19 07:39:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:42,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:42,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:42,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 462 [2023-11-19 07:39:42,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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 07:39:42,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:42,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 462 [2023-11-19 07:39:42,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand