./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ --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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:13,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:13,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:42:13,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:13,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:13,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:13,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:13,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:13,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:42:13,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:42:13,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:13,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:13,593 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:13,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:13,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:42:13,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:13,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:42:13,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:13,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:42:13,602 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:42:13,603 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:42:13,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:42:13,604 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:42:13,605 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:42:13,605 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:42:13,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:13,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:13,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:13,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:42:13,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:42:13,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:13,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:13,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:42:13,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:13,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:42:13,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:42:13,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:42:13,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:42:13,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:42:13,610 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_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2023-11-23 21:42:13,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:13,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:13,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:13,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:13,947 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:13,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2023-11-23 21:42:17,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:42:17,489 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:42:17,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2023-11-23 21:42:17,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/data/7ed37c2a3/22b3f4af072142e793ef9a053c90d78b/FLAGcafbc753f [2023-11-23 21:42:17,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/data/7ed37c2a3/22b3f4af072142e793ef9a053c90d78b [2023-11-23 21:42:17,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:42:17,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:42:17,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:17,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:42:17,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:42:17,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:17" (1/1) ... [2023-11-23 21:42:17,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1f473f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:17, skipping insertion in model container [2023-11-23 21:42:17,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:17" (1/1) ... [2023-11-23 21:42:17,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:42:18,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:18,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:42:18,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:18,117 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:42:18,117 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:42:18,125 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:42:18,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18 WrapperNode [2023-11-23 21:42:18,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:18,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:18,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:42:18,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:42:18,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,204 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-23 21:42:18,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:18,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:42:18,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:42:18,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:42:18,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:42:18,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:42:18,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:42:18,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:42:18,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (1/1) ... [2023-11-23 21:42:18,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:18,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:18,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:42:18,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:42:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:42:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:42:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:42:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:42:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:42:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 21:42:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 21:42:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 21:42:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 21:42:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 21:42:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 21:42:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:42:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:42:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:42:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:42:18,356 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:42:18,573 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:42:18,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:18,844 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:18,958 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:18,959 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:42:18,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:18 BoogieIcfgContainer [2023-11-23 21:42:18,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:18,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:42:18,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:42:18,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:42:18,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:42:17" (1/3) ... [2023-11-23 21:42:18,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65b828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:18, skipping insertion in model container [2023-11-23 21:42:18,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:18" (2/3) ... [2023-11-23 21:42:18,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65b828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:18, skipping insertion in model container [2023-11-23 21:42:18,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:18" (3/3) ... [2023-11-23 21:42:18,980 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2023-11-23 21:42:19,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:42:19,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 21:42:19,003 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:42:19,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:42:19,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 52 transitions, 116 flow [2023-11-23 21:42:19,160 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-23 21:42:19,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:42:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-23 21:42:19,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 52 transitions, 116 flow [2023-11-23 21:42:19,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 48 transitions, 105 flow [2023-11-23 21:42:19,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:42:19,186 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;@5675ee13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:42:19,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 21:42:19,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:42:19,190 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 21:42:19,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:42:19,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:19,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:42:19,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:19,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 7433, now seen corresponding path program 1 times [2023-11-23 21:42:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671329429] [2023-11-23 21:42:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:19,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671329429] [2023-11-23 21:42:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671329429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:19,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:42:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579735958] [2023-11-23 21:42:19,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:19,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:19,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-23 21:42:19,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-23 21:42:19,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:19,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-23 21:42:19,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:19,683 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-23 21:42:19,684 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 21:42:19,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 247 events. 75/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1346 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 389. Up to 117 conditions per place. [2023-11-23 21:42:19,689 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-23 21:42:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 139 flow [2023-11-23 21:42:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-23 21:42:19,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 21:42:19,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-23 21:42:19,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-23 21:42:19,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:19,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-23 21:42:19,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 21:42:19,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:19,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:19,717 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 105 flow. Second operand 3 states and 117 transitions. [2023-11-23 21:42:19,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 139 flow [2023-11-23 21:42:19,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:42:19,724 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-23 21:42:19,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-23 21:42:19,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-23 21:42:19,730 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-23 21:42:19,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-23 21:42:19,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:19,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:42:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:42:19,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:19,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 7434, now seen corresponding path program 1 times [2023-11-23 21:42:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446677394] [2023-11-23 21:42:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446677394] [2023-11-23 21:42:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446677394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:19,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:19,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:42:19,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345472760] [2023-11-23 21:42:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:19,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:19,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-23 21:42:19,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-23 21:42:19,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:19,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-23 21:42:19,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:20,035 INFO L124 PetriNetUnfolderBase]: 75/246 cut-off events. [2023-11-23 21:42:20,035 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-23 21:42:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 246 events. 75/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1342 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 397. Up to 116 conditions per place. [2023-11-23 21:42:20,039 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-23 21:42:20,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 136 flow [2023-11-23 21:42:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-23 21:42:20,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 21:42:20,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:20,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 21:42:20,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,053 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-23 21:42:20,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 136 flow [2023-11-23 21:42:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:20,057 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-23 21:42:20,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-23 21:42:20,060 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-23 21:42:20,060 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-23 21:42:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-23 21:42:20,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:20,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:20,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:42:20,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:20,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash 221648202, now seen corresponding path program 1 times [2023-11-23 21:42:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506357727] [2023-11-23 21:42:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:20,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:20,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506357727] [2023-11-23 21:42:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506357727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069616180] [2023-11-23 21:42:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:20,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-23 21:42:20,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-23 21:42:20,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:20,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-23 21:42:20,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:20,265 INFO L124 PetriNetUnfolderBase]: 76/244 cut-off events. [2023-11-23 21:42:20,265 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-23 21:42:20,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 244 events. 76/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1312 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-23 21:42:20,269 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-23 21:42:20,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-23 21:42:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-23 21:42:20,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-23 21:42:20,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:20,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-11-23 21:42:20,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,275 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 115 transitions. [2023-11-23 21:42:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-23 21:42:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:20,277 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-23 21:42:20,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-23 21:42:20,278 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-23 21:42:20,278 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-23 21:42:20,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-23 21:42:20,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:20,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:42:20,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:20,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 221648203, now seen corresponding path program 1 times [2023-11-23 21:42:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186311909] [2023-11-23 21:42:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:20,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:20,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186311909] [2023-11-23 21:42:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186311909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:20,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:20,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881139986] [2023-11-23 21:42:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:20,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-23 21:42:20,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-11-23 21:42:20,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:20,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-23 21:42:20,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:20,553 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-23 21:42:20,553 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-23 21:42:20,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1348 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-23 21:42:20,557 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-23 21:42:20,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-23 21:42:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-23 21:42:20,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 21:42:20,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:20,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 21:42:20,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,565 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 117 transitions. [2023-11-23 21:42:20,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-23 21:42:20,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:20,567 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-23 21:42:20,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-23 21:42:20,569 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-23 21:42:20,569 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-23 21:42:20,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-11-23 21:42:20,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:20,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:42:20,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:20,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061700, now seen corresponding path program 1 times [2023-11-23 21:42:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834915967] [2023-11-23 21:42:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834915967] [2023-11-23 21:42:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834915967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833797853] [2023-11-23 21:42:20,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:20,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:20,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-23 21:42:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-23 21:42:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-23 21:42:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:20,715 INFO L124 PetriNetUnfolderBase]: 79/242 cut-off events. [2023-11-23 21:42:20,716 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-23 21:42:20,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 242 events. 79/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1303 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 403. Up to 112 conditions per place. [2023-11-23 21:42:20,719 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-23 21:42:20,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 132 flow [2023-11-23 21:42:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-23 21:42:20,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-23 21:42:20,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:20,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-23 21:42:20,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-11-23 21:42:20,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,724 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 115 transitions. [2023-11-23 21:42:20,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 132 flow [2023-11-23 21:42:20,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:20,726 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-23 21:42:20,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-23 21:42:20,728 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-23 21:42:20,728 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-23 21:42:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-23 21:42:20,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:20,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:20,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:42:20,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:20,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061701, now seen corresponding path program 1 times [2023-11-23 21:42:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591289138] [2023-11-23 21:42:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591289138] [2023-11-23 21:42:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591289138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802434643] [2023-11-23 21:42:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:20,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-23 21:42:20,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-23 21:42:20,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:20,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-23 21:42:20,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:20,923 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2023-11-23 21:42:20,923 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-23 21:42:20,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 234 events. 75/234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 27 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 389. Up to 104 conditions per place. [2023-11-23 21:42:20,927 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-23 21:42:20,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 128 flow [2023-11-23 21:42:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:42:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-23 21:42:20,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 21:42:20,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-23 21:42:20,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 21:42:20,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-23 21:42:20,932 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 117 transitions. [2023-11-23 21:42:20,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 128 flow [2023-11-23 21:42:20,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:20,934 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-23 21:42:20,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-23 21:42:20,935 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-23 21:42:20,936 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-23 21:42:20,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-23 21:42:20,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:20,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:20,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:42:20,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:20,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,937 INFO L85 PathProgramCache]: Analyzing trace with hash -395415043, now seen corresponding path program 1 times [2023-11-23 21:42:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913027026] [2023-11-23 21:42:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:21,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:21,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913027026] [2023-11-23 21:42:21,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913027026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:21,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:21,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:42:21,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81757792] [2023-11-23 21:42:21,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:21,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:42:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:42:21,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:42:21,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-23 21:42:21,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 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) [2023-11-23 21:42:21,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:21,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-23 21:42:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:21,963 INFO L124 PetriNetUnfolderBase]: 120/297 cut-off events. [2023-11-23 21:42:21,963 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-23 21:42:21,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 297 events. 120/297 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1605 event pairs, 10 based on Foata normal form. 12/299 useless extension candidates. Maximal degree in co-relation 527. Up to 112 conditions per place. [2023-11-23 21:42:21,967 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 21 selfloop transitions, 4 changer transitions 6/52 dead transitions. [2023-11-23 21:42:21,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 178 flow [2023-11-23 21:42:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:42:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 21:42:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2023-11-23 21:42:21,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2023-11-23 21:42:21,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 242 transitions. [2023-11-23 21:42:21,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 242 transitions. [2023-11-23 21:42:21,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:21,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 242 transitions. [2023-11-23 21:42:21,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 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) [2023-11-23 21:42:21,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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) [2023-11-23 21:42:21,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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) [2023-11-23 21:42:21,977 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 7 states and 242 transitions. [2023-11-23 21:42:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 178 flow [2023-11-23 21:42:21,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:42:21,979 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 88 flow [2023-11-23 21:42:21,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-11-23 21:42:21,981 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-23 21:42:21,981 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 88 flow [2023-11-23 21:42:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 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) [2023-11-23 21:42:21,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:21,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:21,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:42:21,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:21,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash -395413506, now seen corresponding path program 1 times [2023-11-23 21:42:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345612503] [2023-11-23 21:42:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:21,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345612503] [2023-11-23 21:42:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345612503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699278956] [2023-11-23 21:42:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:22,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-23 21:42:22,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-23 21:42:22,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:22,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-23 21:42:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:22,827 INFO L124 PetriNetUnfolderBase]: 1509/2867 cut-off events. [2023-11-23 21:42:22,827 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-23 21:42:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5458 conditions, 2867 events. 1509/2867 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21139 event pairs, 332 based on Foata normal form. 0/2743 useless extension candidates. Maximal degree in co-relation 5447. Up to 765 conditions per place. [2023-11-23 21:42:22,846 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 29 selfloop transitions, 6 changer transitions 55/107 dead transitions. [2023-11-23 21:42:22,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 107 transitions, 430 flow [2023-11-23 21:42:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:42:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 21:42:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 335 transitions. [2023-11-23 21:42:22,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7158119658119658 [2023-11-23 21:42:22,849 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 335 transitions. [2023-11-23 21:42:22,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 335 transitions. [2023-11-23 21:42:22,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:22,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 335 transitions. [2023-11-23 21:42:22,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.22222222222222) internal successors, (335), 9 states have internal predecessors, (335), 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) [2023-11-23 21:42:22,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-23 21:42:22,854 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-23 21:42:22,854 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 88 flow. Second operand 9 states and 335 transitions. [2023-11-23 21:42:22,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 107 transitions, 430 flow [2023-11-23 21:42:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:42:22,860 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 164 flow [2023-11-23 21:42:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-11-23 21:42:22,861 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-23 21:42:22,861 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 164 flow [2023-11-23 21:42:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-23 21:42:22,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:22,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:22,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:42:22,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:22,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1206725375, now seen corresponding path program 1 times [2023-11-23 21:42:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009632077] [2023-11-23 21:42:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:23,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009632077] [2023-11-23 21:42:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009632077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:42:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725941426] [2023-11-23 21:42:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:42:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:42:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:23,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-23 21:42:23,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2023-11-23 21:42:23,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:23,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-23 21:42:23,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:23,498 INFO L124 PetriNetUnfolderBase]: 973/1988 cut-off events. [2023-11-23 21:42:23,498 INFO L125 PetriNetUnfolderBase]: For 2718/2727 co-relation queries the response was YES. [2023-11-23 21:42:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5810 conditions, 1988 events. 973/1988 cut-off events. For 2718/2727 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14398 event pairs, 159 based on Foata normal form. 66/2025 useless extension candidates. Maximal degree in co-relation 5791. Up to 572 conditions per place. [2023-11-23 21:42:23,515 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 31 selfloop transitions, 7 changer transitions 46/101 dead transitions. [2023-11-23 21:42:23,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 101 transitions, 642 flow [2023-11-23 21:42:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:42:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:42:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2023-11-23 21:42:23,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2023-11-23 21:42:23,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 350 transitions. [2023-11-23 21:42:23,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 350 transitions. [2023-11-23 21:42:23,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:23,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 350 transitions. [2023-11-23 21:42:23,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2023-11-23 21:42:23,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-23 21:42:23,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-23 21:42:23,523 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 164 flow. Second operand 10 states and 350 transitions. [2023-11-23 21:42:23,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 101 transitions, 642 flow [2023-11-23 21:42:23,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 556 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-11-23 21:42:23,549 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 212 flow [2023-11-23 21:42:23,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-11-23 21:42:23,551 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-23 21:42:23,551 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 212 flow [2023-11-23 21:42:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2023-11-23 21:42:23,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:23,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:42:23,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:23,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 257143468, now seen corresponding path program 1 times [2023-11-23 21:42:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:23,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259352379] [2023-11-23 21:42:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259352379] [2023-11-23 21:42:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259352379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:23,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:42:23,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278342311] [2023-11-23 21:42:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:23,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:42:23,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:23,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:42:23,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:23,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-23 21:42:23,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:23,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:23,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-23 21:42:23,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:24,269 INFO L124 PetriNetUnfolderBase]: 1023/2162 cut-off events. [2023-11-23 21:42:24,269 INFO L125 PetriNetUnfolderBase]: For 4381/4384 co-relation queries the response was YES. [2023-11-23 21:42:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6481 conditions, 2162 events. 1023/2162 cut-off events. For 4381/4384 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16345 event pairs, 152 based on Foata normal form. 57/2167 useless extension candidates. Maximal degree in co-relation 6455. Up to 594 conditions per place. [2023-11-23 21:42:24,287 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 33 selfloop transitions, 9 changer transitions 56/115 dead transitions. [2023-11-23 21:42:24,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 115 transitions, 858 flow [2023-11-23 21:42:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:42:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 21:42:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2023-11-23 21:42:24,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6837606837606838 [2023-11-23 21:42:24,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 320 transitions. [2023-11-23 21:42:24,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 320 transitions. [2023-11-23 21:42:24,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:24,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 320 transitions. [2023-11-23 21:42:24,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 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) [2023-11-23 21:42:24,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-23 21:42:24,297 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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) [2023-11-23 21:42:24,297 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 212 flow. Second operand 9 states and 320 transitions. [2023-11-23 21:42:24,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 115 transitions, 858 flow [2023-11-23 21:42:24,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 801 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-23 21:42:24,322 INFO L231 Difference]: Finished difference. Result has 73 places, 42 transitions, 222 flow [2023-11-23 21:42:24,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=73, PETRI_TRANSITIONS=42} [2023-11-23 21:42:24,325 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-23 21:42:24,326 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 42 transitions, 222 flow [2023-11-23 21:42:24,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:24,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:24,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:42:24,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:24,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 551116417, now seen corresponding path program 1 times [2023-11-23 21:42:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051693106] [2023-11-23 21:42:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:24,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051693106] [2023-11-23 21:42:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051693106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:42:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168534340] [2023-11-23 21:42:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:42:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:42:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:24,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-23 21:42:24,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 42 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2023-11-23 21:42:24,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:24,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-23 21:42:24,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:24,847 INFO L124 PetriNetUnfolderBase]: 405/905 cut-off events. [2023-11-23 21:42:24,847 INFO L125 PetriNetUnfolderBase]: For 2182/2187 co-relation queries the response was YES. [2023-11-23 21:42:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783 conditions, 905 events. 405/905 cut-off events. For 2182/2187 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5913 event pairs, 109 based on Foata normal form. 23/921 useless extension candidates. Maximal degree in co-relation 2752. Up to 242 conditions per place. [2023-11-23 21:42:24,855 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 29 selfloop transitions, 5 changer transitions 26/77 dead transitions. [2023-11-23 21:42:24,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 548 flow [2023-11-23 21:42:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:42:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 21:42:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2023-11-23 21:42:24,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6514423076923077 [2023-11-23 21:42:24,858 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 271 transitions. [2023-11-23 21:42:24,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 271 transitions. [2023-11-23 21:42:24,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:24,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 271 transitions. [2023-11-23 21:42:24,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 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) [2023-11-23 21:42:24,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-23 21:42:24,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-23 21:42:24,888 INFO L175 Difference]: Start difference. First operand has 73 places, 42 transitions, 222 flow. Second operand 8 states and 271 transitions. [2023-11-23 21:42:24,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 548 flow [2023-11-23 21:42:24,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 435 flow, removed 36 selfloop flow, removed 14 redundant places. [2023-11-23 21:42:24,898 INFO L231 Difference]: Finished difference. Result has 67 places, 40 transitions, 172 flow [2023-11-23 21:42:24,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=172, PETRI_PLACES=67, PETRI_TRANSITIONS=40} [2023-11-23 21:42:24,899 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-23 21:42:24,899 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 40 transitions, 172 flow [2023-11-23 21:42:24,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2023-11-23 21:42:24,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:24,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:42:24,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:24,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1853428557, now seen corresponding path program 1 times [2023-11-23 21:42:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:24,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034275865] [2023-11-23 21:42:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034275865] [2023-11-23 21:42:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034275865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:25,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:25,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:42:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165220023] [2023-11-23 21:42:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:42:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:42:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:25,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-23 21:42:25,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 40 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:25,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:25,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-23 21:42:25,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:25,386 INFO L124 PetriNetUnfolderBase]: 234/548 cut-off events. [2023-11-23 21:42:25,386 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2023-11-23 21:42:25,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 548 events. 234/548 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3159 event pairs, 65 based on Foata normal form. 12/549 useless extension candidates. Maximal degree in co-relation 1413. Up to 150 conditions per place. [2023-11-23 21:42:25,391 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 23 selfloop transitions, 4 changer transitions 33/77 dead transitions. [2023-11-23 21:42:25,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 414 flow [2023-11-23 21:42:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:42:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:42:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2023-11-23 21:42:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6365384615384615 [2023-11-23 21:42:25,394 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2023-11-23 21:42:25,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2023-11-23 21:42:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2023-11-23 21:42:25,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 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) [2023-11-23 21:42:25,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-23 21:42:25,399 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 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) [2023-11-23 21:42:25,400 INFO L175 Difference]: Start difference. First operand has 67 places, 40 transitions, 172 flow. Second operand 10 states and 331 transitions. [2023-11-23 21:42:25,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 414 flow [2023-11-23 21:42:25,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 352 flow, removed 20 selfloop flow, removed 11 redundant places. [2023-11-23 21:42:25,405 INFO L231 Difference]: Finished difference. Result has 66 places, 36 transitions, 125 flow [2023-11-23 21:42:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=36} [2023-11-23 21:42:25,408 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-11-23 21:42:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 36 transitions, 125 flow [2023-11-23 21:42:25,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:25,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:42:25,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:25,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:42:25,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-23 21:42:25,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1092003385, now seen corresponding path program 1 times [2023-11-23 21:42:25,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:25,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89440960] [2023-11-23 21:42:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89440960] [2023-11-23 21:42:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89440960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:42:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255832721] [2023-11-23 21:42:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:42:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:42:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:25,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2023-11-23 21:42:25,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 36 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 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) [2023-11-23 21:42:25,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:42:25,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2023-11-23 21:42:25,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:42:25,815 INFO L124 PetriNetUnfolderBase]: 133/292 cut-off events. [2023-11-23 21:42:25,815 INFO L125 PetriNetUnfolderBase]: For 228/230 co-relation queries the response was YES. [2023-11-23 21:42:25,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 292 events. 133/292 cut-off events. For 228/230 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1313 event pairs, 53 based on Foata normal form. 12/297 useless extension candidates. Maximal degree in co-relation 703. Up to 106 conditions per place. [2023-11-23 21:42:25,817 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-11-23 21:42:25,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 235 flow [2023-11-23 21:42:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:42:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 21:42:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2023-11-23 21:42:25,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-11-23 21:42:25,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2023-11-23 21:42:25,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2023-11-23 21:42:25,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:25,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2023-11-23 21:42:25,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 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) [2023-11-23 21:42:25,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-23 21:42:25,823 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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) [2023-11-23 21:42:25,824 INFO L175 Difference]: Start difference. First operand has 66 places, 36 transitions, 125 flow. Second operand 8 states and 247 transitions. [2023-11-23 21:42:25,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 235 flow [2023-11-23 21:42:25,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 202 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-11-23 21:42:25,826 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-11-23 21:42:25,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-11-23 21:42:25,827 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-11-23 21:42:25,827 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-11-23 21:42:25,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 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) [2023-11-23 21:42:25,830 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-23 21:42:25,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-23 21:42:25,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-23 21:42:25,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-23 21:42:25,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-23 21:42:25,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-23 21:42:25,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-23 21:42:25,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-23 21:42:25,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-23 21:42:25,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-23 21:42:25,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-23 21:42:25,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:42:25,833 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:25,837 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:42:25,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:42:25,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:42:25 BasicIcfg [2023-11-23 21:42:25,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:42:25,844 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:42:25,844 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:42:25,845 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:42:25,845 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:18" (3/4) ... [2023-11-23 21:42:25,848 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:42:25,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 21:42:25,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 21:42:25,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 21:42:25,858 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-23 21:42:25,859 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-23 21:42:25,859 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:42:25,859 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 21:42:25,950 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:42:25,950 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:42:25,950 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:42:25,951 INFO L158 Benchmark]: Toolchain (without parser) took 8428.32ms. Allocated memory was 138.4MB in the beginning and 268.4MB in the end (delta: 130.0MB). Free memory was 99.2MB in the beginning and 217.5MB in the end (delta: -118.3MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,952 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 85.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:42:25,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.16ms. Allocated memory is still 138.4MB. Free memory was 99.2MB in the beginning and 78.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.10ms. Allocated memory is still 138.4MB. Free memory was 78.5MB in the beginning and 76.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,953 INFO L158 Benchmark]: Boogie Preprocessor took 51.69ms. Allocated memory is still 138.4MB. Free memory was 76.6MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,953 INFO L158 Benchmark]: RCFGBuilder took 708.57ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.9MB in the beginning and 145.8MB in the end (delta: -70.9MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,954 INFO L158 Benchmark]: TraceAbstraction took 6871.41ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 144.5MB in the beginning and 221.7MB in the end (delta: -77.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,954 INFO L158 Benchmark]: Witness Printer took 106.45ms. Allocated memory is still 268.4MB. Free memory was 221.7MB in the beginning and 217.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:25,956 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 85.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.16ms. Allocated memory is still 138.4MB. Free memory was 99.2MB in the beginning and 78.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.10ms. Allocated memory is still 138.4MB. Free memory was 78.5MB in the beginning and 76.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.69ms. Allocated memory is still 138.4MB. Free memory was 76.6MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 708.57ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.9MB in the beginning and 145.8MB in the end (delta: -70.9MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6871.41ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 144.5MB in the beginning and 221.7MB in the end (delta: -77.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 106.45ms. Allocated memory is still 268.4MB. Free memory was 221.7MB in the beginning and 217.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 624 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 496 mSDsluCounter, 268 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 85 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=10, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 1201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:42:25,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc497a7-5d67-4f73-8fdb-f01cd8916c2b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE