./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl --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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:30,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:30,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:24:30,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:30,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:30,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:30,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:30,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:30,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:30,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:30,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:30,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:30,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:30,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:30,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:30,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:30,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:30,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:30,409 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:24:30,409 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:24:30,409 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:24:30,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:30,411 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:24:30,411 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:30,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:30,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:30,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:30,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:30,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:30,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:30,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:30,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:30,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:30,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:30,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:30,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:30,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:30,417 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:30,418 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_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2023-11-12 02:24:30,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:30,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:30,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:30,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:30,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:30,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-12 02:24:34,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:34,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:34,549 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-12 02:24:34,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/data/8de12e076/69d6fe75af8d49d6bb11d9e82533ae7b/FLAGec1902cda [2023-11-12 02:24:34,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/data/8de12e076/69d6fe75af8d49d6bb11d9e82533ae7b [2023-11-12 02:24:34,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:34,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:34,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:34,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:34,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:34,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:34" (1/1) ... [2023-11-12 02:24:34,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6adf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:34, skipping insertion in model container [2023-11-12 02:24:34,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:34" (1/1) ... [2023-11-12 02:24:34,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:35,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:35,472 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:35,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:35,683 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:35,684 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:35,692 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:35,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35 WrapperNode [2023-11-12 02:24:35,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:35,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:35,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:35,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:35,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,802 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 288 [2023-11-12 02:24:35,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:35,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:35,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:35,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:35,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:35,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:35,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:35,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:35,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (1/1) ... [2023-11-12 02:24:35,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:35,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:35,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:36,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:24:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:24:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 02:24:36,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 02:24:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:36,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:36,029 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:36,418 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:36,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:37,037 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:37,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:37,231 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:24:37,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:37 BoogieIcfgContainer [2023-11-12 02:24:37,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:37,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:37,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:37,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:37,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:34" (1/3) ... [2023-11-12 02:24:37,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f06b9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:37, skipping insertion in model container [2023-11-12 02:24:37,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:35" (2/3) ... [2023-11-12 02:24:37,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f06b9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:37, skipping insertion in model container [2023-11-12 02:24:37,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:37" (3/3) ... [2023-11-12 02:24:37,249 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-11-12 02:24:37,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:37,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-12 02:24:37,270 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:37,497 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:24:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,724 INFO L124 PetriNetUnfolderBase]: 20/378 cut-off events. [2023-11-12 02:24:37,725 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 378 events. 20/378 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 913 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 4 conditions per place. [2023-11-12 02:24:37,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:37,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 356 transitions, 719 flow [2023-11-12 02:24:37,859 INFO L124 PetriNetUnfolderBase]: 20/378 cut-off events. [2023-11-12 02:24:37,859 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 378 events. 20/378 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 913 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 4 conditions per place. [2023-11-12 02:24:37,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 13832 [2023-11-12 02:24:57,905 INFO L134 LiptonReduction]: Checked pairs total: 24615 [2023-11-12 02:24:57,906 INFO L136 LiptonReduction]: Total number of compositions: 435 [2023-11-12 02:24:57,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:57,930 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;@468460a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:57,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2023-11-12 02:24:57,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:57,932 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:24:57,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:57,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:57,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:24:57,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:24:57,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1655, now seen corresponding path program 1 times [2023-11-12 02:24:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:57,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195036134] [2023-11-12 02:24:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:58,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195036134] [2023-11-12 02:24:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195036134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:24:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290067230] [2023-11-12 02:24:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:24:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:24:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:24:58,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 791 [2023-11-12 02:24:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 237 flow. Second operand has 2 states, 2 states have (on average 309.5) internal successors, (619), 2 states have internal predecessors, (619), 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) [2023-11-12 02:24:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 791 [2023-11-12 02:24:58,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:58,762 INFO L124 PetriNetUnfolderBase]: 580/1222 cut-off events. [2023-11-12 02:24:58,763 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1222 events. 580/1222 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6767 event pairs, 506 based on Foata normal form. 12/509 useless extension candidates. Maximal degree in co-relation 2342. Up to 1162 conditions per place. [2023-11-12 02:24:58,774 INFO L140 encePairwiseOnDemand]: 756/791 looper letters, 73 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2023-11-12 02:24:58,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 311 flow [2023-11-12 02:24:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:24:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:24:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 726 transitions. [2023-11-12 02:24:58,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589127686472819 [2023-11-12 02:24:58,797 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 726 transitions. [2023-11-12 02:24:58,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 726 transitions. [2023-11-12 02:24:58,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:58,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 726 transitions. [2023-11-12 02:24:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 363.0) internal successors, (726), 2 states have internal predecessors, (726), 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) [2023-11-12 02:24:58,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 791.0) internal successors, (2373), 3 states have internal predecessors, (2373), 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) [2023-11-12 02:24:58,823 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 791.0) internal successors, (2373), 3 states have internal predecessors, (2373), 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) [2023-11-12 02:24:58,825 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 237 flow. Second operand 2 states and 726 transitions. [2023-11-12 02:24:58,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 311 flow [2023-11-12 02:24:58,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 311 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:58,834 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 165 flow [2023-11-12 02:24:58,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=165, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2023-11-12 02:24:58,841 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -32 predicate places. [2023-11-12 02:24:58,841 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 165 flow [2023-11-12 02:24:58,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 309.5) internal successors, (619), 2 states have internal predecessors, (619), 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) [2023-11-12 02:24:58,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:58,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:24:58,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:58,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:24:58,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash 52914, now seen corresponding path program 1 times [2023-11-12 02:24:58,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:58,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896705122] [2023-11-12 02:24:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:58,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896705122] [2023-11-12 02:24:59,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896705122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:59,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:59,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653617867] [2023-11-12 02:24:59,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:59,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:59,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:59,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 791 [2023-11-12 02:24:59,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-11-12 02:24:59,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:59,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 791 [2023-11-12 02:24:59,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:59,873 INFO L124 PetriNetUnfolderBase]: 581/1227 cut-off events. [2023-11-12 02:24:59,873 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:59,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 1227 events. 581/1227 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6771 event pairs, 506 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 2396. Up to 1163 conditions per place. [2023-11-12 02:24:59,884 INFO L140 encePairwiseOnDemand]: 787/791 looper letters, 75 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-11-12 02:24:59,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 331 flow [2023-11-12 02:24:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-11-12 02:24:59,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163506110408765 [2023-11-12 02:24:59,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-11-12 02:24:59,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-11-12 02:24:59,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:59,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-11-12 02:24:59,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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) [2023-11-12 02:24:59,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:24:59,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:24:59,910 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 165 flow. Second operand 3 states and 988 transitions. [2023-11-12 02:24:59,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 331 flow [2023-11-12 02:24:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:59,918 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 184 flow [2023-11-12 02:24:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-11-12 02:24:59,923 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -29 predicate places. [2023-11-12 02:24:59,923 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 184 flow [2023-11-12 02:24:59,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-11-12 02:24:59,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:59,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:24:59,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:59,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:24:59,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash 52915, now seen corresponding path program 1 times [2023-11-12 02:24:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265270751] [2023-11-12 02:24:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265270751] [2023-11-12 02:25:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265270751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:00,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:00,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281080090] [2023-11-12 02:25:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:00,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:00,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 791 [2023-11-12 02:25:00,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 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) [2023-11-12 02:25:00,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:00,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 791 [2023-11-12 02:25:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:00,841 INFO L124 PetriNetUnfolderBase]: 1092/2270 cut-off events. [2023-11-12 02:25:00,841 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:00,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 2270 events. 1092/2270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 13517 event pairs, 440 based on Foata normal form. 12/980 useless extension candidates. Maximal degree in co-relation 4455. Up to 1186 conditions per place. [2023-11-12 02:25:00,861 INFO L140 encePairwiseOnDemand]: 778/791 looper letters, 128 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2023-11-12 02:25:00,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 137 transitions, 563 flow [2023-11-12 02:25:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-11-12 02:25:00,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44289928360724823 [2023-11-12 02:25:00,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-11-12 02:25:00,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-11-12 02:25:00,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:00,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-11-12 02:25:00,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 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) [2023-11-12 02:25:00,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:00,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:00,885 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 184 flow. Second operand 3 states and 1051 transitions. [2023-11-12 02:25:00,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 137 transitions, 563 flow [2023-11-12 02:25:00,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 137 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:00,893 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 215 flow [2023-11-12 02:25:00,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2023-11-12 02:25:00,895 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -29 predicate places. [2023-11-12 02:25:00,895 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 215 flow [2023-11-12 02:25:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 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) [2023-11-12 02:25:00,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:00,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:25:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:00,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:00,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 52956, now seen corresponding path program 1 times [2023-11-12 02:25:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609516623] [2023-11-12 02:25:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609516623] [2023-11-12 02:25:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609516623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239787885] [2023-11-12 02:25:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:01,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 791 [2023-11-12 02:25:01,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-11-12 02:25:01,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:01,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 791 [2023-11-12 02:25:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:01,666 INFO L124 PetriNetUnfolderBase]: 1080/2257 cut-off events. [2023-11-12 02:25:01,667 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 2257 events. 1080/2257 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13457 event pairs, 946 based on Foata normal form. 1/1024 useless extension candidates. Maximal degree in co-relation 4607. Up to 2148 conditions per place. [2023-11-12 02:25:01,684 INFO L140 encePairwiseOnDemand]: 787/791 looper letters, 73 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-12 02:25:01,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 81 transitions, 361 flow [2023-11-12 02:25:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2023-11-12 02:25:01,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142435735356089 [2023-11-12 02:25:01,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2023-11-12 02:25:01,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2023-11-12 02:25:01,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:01,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2023-11-12 02:25:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2023-11-12 02:25:01,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:01,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:01,709 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 215 flow. Second operand 3 states and 983 transitions. [2023-11-12 02:25:01,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 81 transitions, 361 flow [2023-11-12 02:25:01,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 355 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:01,718 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 213 flow [2023-11-12 02:25:01,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-11-12 02:25:01,720 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2023-11-12 02:25:01,721 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 213 flow [2023-11-12 02:25:01,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-11-12 02:25:01,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:01,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:01,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1642636, now seen corresponding path program 1 times [2023-11-12 02:25:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161678505] [2023-11-12 02:25:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161678505] [2023-11-12 02:25:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161678505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583250354] [2023-11-12 02:25:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:01,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:01,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:01,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:02,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:25:02,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:02,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583250354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:02,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-12 02:25:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616171937] [2023-11-12 02:25:02,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:02,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 791 [2023-11-12 02:25:02,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 302.125) internal successors, (2417), 8 states have internal predecessors, (2417), 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) [2023-11-12 02:25:02,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:02,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 791 [2023-11-12 02:25:02,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:02,941 INFO L124 PetriNetUnfolderBase]: 1080/2259 cut-off events. [2023-11-12 02:25:02,942 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:25:02,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 2259 events. 1080/2259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13456 event pairs, 946 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 4580. Up to 2147 conditions per place. [2023-11-12 02:25:02,960 INFO L140 encePairwiseOnDemand]: 786/791 looper letters, 73 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-11-12 02:25:02,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 375 flow [2023-11-12 02:25:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:25:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1581 transitions. [2023-11-12 02:25:02,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997471554993679 [2023-11-12 02:25:02,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1581 transitions. [2023-11-12 02:25:02,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1581 transitions. [2023-11-12 02:25:02,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:02,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1581 transitions. [2023-11-12 02:25:02,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.2) internal successors, (1581), 5 states have internal predecessors, (1581), 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) [2023-11-12 02:25:02,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 791.0) internal successors, (4746), 6 states have internal predecessors, (4746), 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) [2023-11-12 02:25:02,990 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 791.0) internal successors, (4746), 6 states have internal predecessors, (4746), 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) [2023-11-12 02:25:02,990 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 213 flow. Second operand 5 states and 1581 transitions. [2023-11-12 02:25:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 375 flow [2023-11-12 02:25:02,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:03,000 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 238 flow [2023-11-12 02:25:03,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2023-11-12 02:25:03,003 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -23 predicate places. [2023-11-12 02:25:03,003 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 238 flow [2023-11-12 02:25:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 302.125) internal successors, (2417), 8 states have internal predecessors, (2417), 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) [2023-11-12 02:25:03,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:03,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:03,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:25:03,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:03,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:03,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1642594, now seen corresponding path program 1 times [2023-11-12 02:25:03,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:03,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15010850] [2023-11-12 02:25:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:03,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15010850] [2023-11-12 02:25:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15010850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828310562] [2023-11-12 02:25:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:03,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:03,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:03,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:03,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:25:03,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:03,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828310562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:03,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-12 02:25:03,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685223280] [2023-11-12 02:25:03,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:03,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:25:03,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:25:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:25:04,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 791 [2023-11-12 02:25:04,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 301.125) internal successors, (2409), 8 states have internal predecessors, (2409), 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) [2023-11-12 02:25:04,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:04,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 791 [2023-11-12 02:25:04,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:05,070 INFO L124 PetriNetUnfolderBase]: 1082/2264 cut-off events. [2023-11-12 02:25:05,071 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:25:05,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 2264 events. 1082/2264 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13501 event pairs, 946 based on Foata normal form. 3/1032 useless extension candidates. Maximal degree in co-relation 4609. Up to 2150 conditions per place. [2023-11-12 02:25:05,085 INFO L140 encePairwiseOnDemand]: 787/791 looper letters, 75 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2023-11-12 02:25:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 432 flow [2023-11-12 02:25:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1882 transitions. [2023-11-12 02:25:05,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39654445849136116 [2023-11-12 02:25:05,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1882 transitions. [2023-11-12 02:25:05,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1882 transitions. [2023-11-12 02:25:05,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:05,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1882 transitions. [2023-11-12 02:25:05,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.6666666666667) internal successors, (1882), 6 states have internal predecessors, (1882), 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) [2023-11-12 02:25:05,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 791.0) internal successors, (5537), 7 states have internal predecessors, (5537), 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) [2023-11-12 02:25:05,112 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 791.0) internal successors, (5537), 7 states have internal predecessors, (5537), 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) [2023-11-12 02:25:05,113 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 238 flow. Second operand 6 states and 1882 transitions. [2023-11-12 02:25:05,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 432 flow [2023-11-12 02:25:05,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 423 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:05,118 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 275 flow [2023-11-12 02:25:05,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-11-12 02:25:05,121 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-11-12 02:25:05,121 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 275 flow [2023-11-12 02:25:05,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 301.125) internal successors, (2409), 8 states have internal predecessors, (2409), 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) [2023-11-12 02:25:05,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:05,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-12 02:25:05,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:25:05,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 50922716, now seen corresponding path program 2 times [2023-11-12 02:25:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121859041] [2023-11-12 02:25:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121859041] [2023-11-12 02:25:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121859041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:05,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731434882] [2023-11-12 02:25:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:05,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 791 [2023-11-12 02:25:05,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-11-12 02:25:05,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:05,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 791 [2023-11-12 02:25:05,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:06,217 INFO L124 PetriNetUnfolderBase]: 1082/2261 cut-off events. [2023-11-12 02:25:06,217 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:25:06,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 2261 events. 1082/2261 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13485 event pairs, 946 based on Foata normal form. 3/1030 useless extension candidates. Maximal degree in co-relation 4607. Up to 2146 conditions per place. [2023-11-12 02:25:06,236 INFO L140 encePairwiseOnDemand]: 788/791 looper letters, 75 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-12 02:25:06,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 427 flow [2023-11-12 02:25:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2023-11-12 02:25:06,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142435735356089 [2023-11-12 02:25:06,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2023-11-12 02:25:06,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2023-11-12 02:25:06,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:06,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2023-11-12 02:25:06,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2023-11-12 02:25:06,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:06,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:06,255 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 275 flow. Second operand 3 states and 983 transitions. [2023-11-12 02:25:06,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 427 flow [2023-11-12 02:25:06,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 395 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:06,259 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 245 flow [2023-11-12 02:25:06,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-11-12 02:25:06,260 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-11-12 02:25:06,260 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 245 flow [2023-11-12 02:25:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-11-12 02:25:06,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:06,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-12 02:25:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:06,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:06,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1578605719, now seen corresponding path program 1 times [2023-11-12 02:25:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:06,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920612050] [2023-11-12 02:25:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920612050] [2023-11-12 02:25:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920612050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:06,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:06,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:06,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841708445] [2023-11-12 02:25:06,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:06,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 791 [2023-11-12 02:25:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2023-11-12 02:25:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 791 [2023-11-12 02:25:06,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:06,992 INFO L124 PetriNetUnfolderBase]: 990/2071 cut-off events. [2023-11-12 02:25:06,992 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:25:06,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 2071 events. 990/2071 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12149 event pairs, 446 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 4221. Up to 1157 conditions per place. [2023-11-12 02:25:07,012 INFO L140 encePairwiseOnDemand]: 785/791 looper letters, 128 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2023-11-12 02:25:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 618 flow [2023-11-12 02:25:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-11-12 02:25:07,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382638010956595 [2023-11-12 02:25:07,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-11-12 02:25:07,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-11-12 02:25:07,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:07,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-11-12 02:25:07,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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) [2023-11-12 02:25:07,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:07,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 791.0) internal successors, (3164), 4 states have internal predecessors, (3164), 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) [2023-11-12 02:25:07,029 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 245 flow. Second operand 3 states and 1040 transitions. [2023-11-12 02:25:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 618 flow [2023-11-12 02:25:07,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:07,034 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 253 flow [2023-11-12 02:25:07,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2023-11-12 02:25:07,039 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-11-12 02:25:07,039 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 253 flow [2023-11-12 02:25:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2023-11-12 02:25:07,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:07,057 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-12 02:25:07,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:07,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:07,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1578605720, now seen corresponding path program 1 times [2023-11-12 02:25:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:07,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627715612] [2023-11-12 02:25:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627715612] [2023-11-12 02:25:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627715612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621934261] [2023-11-12 02:25:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:07,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 791 [2023-11-12 02:25:07,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-11-12 02:25:07,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:07,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 791 [2023-11-12 02:25:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:07,938 INFO L124 PetriNetUnfolderBase]: 917/1935 cut-off events. [2023-11-12 02:25:07,938 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-12 02:25:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 1935 events. 917/1935 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11806 event pairs, 394 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 4101. Up to 1653 conditions per place. [2023-11-12 02:25:07,953 INFO L140 encePairwiseOnDemand]: 780/791 looper letters, 113 selfloop transitions, 11 changer transitions 3/133 dead transitions. [2023-11-12 02:25:07,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 133 transitions, 606 flow [2023-11-12 02:25:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2023-11-12 02:25:07,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118204804045512 [2023-11-12 02:25:07,960 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2023-11-12 02:25:07,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2023-11-12 02:25:07,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:07,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2023-11-12 02:25:07,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 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) [2023-11-12 02:25:07,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 791.0) internal successors, (3955), 5 states have internal predecessors, (3955), 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) [2023-11-12 02:25:07,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 791.0) internal successors, (3955), 5 states have internal predecessors, (3955), 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) [2023-11-12 02:25:07,973 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 253 flow. Second operand 4 states and 1303 transitions. [2023-11-12 02:25:07,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 133 transitions, 606 flow [2023-11-12 02:25:07,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 598 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:07,979 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 318 flow [2023-11-12 02:25:07,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-11-12 02:25:07,980 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2023-11-12 02:25:07,980 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 318 flow [2023-11-12 02:25:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 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) [2023-11-12 02:25:07,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:07,981 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:25:07,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:07,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:07,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1692121778, now seen corresponding path program 2 times [2023-11-12 02:25:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165867572] [2023-11-12 02:25:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:08,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165867572] [2023-11-12 02:25:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165867572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546597391] [2023-11-12 02:25:08,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:25:08,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:08,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:08,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:08,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:25:08,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:25:08,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:25:08,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:25:08,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:08,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:08,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546597391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:08,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:25:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-11-12 02:25:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708683540] [2023-11-12 02:25:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:08,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:25:08,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 791 [2023-11-12 02:25:08,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 303.2) internal successors, (1516), 5 states have internal predecessors, (1516), 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) [2023-11-12 02:25:08,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:08,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 791 [2023-11-12 02:25:08,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:08,933 INFO L124 PetriNetUnfolderBase]: 914/1924 cut-off events. [2023-11-12 02:25:08,933 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2023-11-12 02:25:08,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 1924 events. 914/1924 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11552 event pairs, 652 based on Foata normal form. 1/1253 useless extension candidates. Maximal degree in co-relation 4680. Up to 1834 conditions per place. [2023-11-12 02:25:08,949 INFO L140 encePairwiseOnDemand]: 788/791 looper letters, 76 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-12 02:25:08,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 436 flow [2023-11-12 02:25:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:25:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1581 transitions. [2023-11-12 02:25:08,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997471554993679 [2023-11-12 02:25:08,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1581 transitions. [2023-11-12 02:25:08,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1581 transitions. [2023-11-12 02:25:08,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:08,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1581 transitions. [2023-11-12 02:25:08,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.2) internal successors, (1581), 5 states have internal predecessors, (1581), 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) [2023-11-12 02:25:08,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 791.0) internal successors, (4746), 6 states have internal predecessors, (4746), 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) [2023-11-12 02:25:08,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 791.0) internal successors, (4746), 6 states have internal predecessors, (4746), 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) [2023-11-12 02:25:08,976 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 318 flow. Second operand 5 states and 1581 transitions. [2023-11-12 02:25:08,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 436 flow [2023-11-12 02:25:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 426 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:08,980 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 274 flow [2023-11-12 02:25:08,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-11-12 02:25:08,982 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-11-12 02:25:08,982 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 274 flow [2023-11-12 02:25:08,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 303.2) internal successors, (1516), 5 states have internal predecessors, (1516), 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) [2023-11-12 02:25:08,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:08,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:08,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:25:09,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:09,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1647753098, now seen corresponding path program 1 times [2023-11-12 02:25:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571987754] [2023-11-12 02:25:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571987754] [2023-11-12 02:25:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571987754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966853254] [2023-11-12 02:25:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:09,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:25:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:25:09,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:09,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:25:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966853254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:09,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-12 02:25:09,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319625216] [2023-11-12 02:25:09,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:25:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:25:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:25:11,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 791 [2023-11-12 02:25:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 274 flow. Second operand has 11 states, 11 states have (on average 291.90909090909093) internal successors, (3211), 11 states have internal predecessors, (3211), 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) [2023-11-12 02:25:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:11,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 791 [2023-11-12 02:25:11,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:12,039 INFO L124 PetriNetUnfolderBase]: 891/2009 cut-off events. [2023-11-12 02:25:12,039 INFO L125 PetriNetUnfolderBase]: For 578/578 co-relation queries the response was YES. [2023-11-12 02:25:12,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 2009 events. 891/2009 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13266 event pairs, 506 based on Foata normal form. 30/1320 useless extension candidates. Maximal degree in co-relation 4812. Up to 1466 conditions per place. [2023-11-12 02:25:12,052 INFO L140 encePairwiseOnDemand]: 781/791 looper letters, 155 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2023-11-12 02:25:12,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 174 transitions, 816 flow [2023-11-12 02:25:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1903 transitions. [2023-11-12 02:25:12,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009692372524231 [2023-11-12 02:25:12,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1903 transitions. [2023-11-12 02:25:12,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1903 transitions. [2023-11-12 02:25:12,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:12,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1903 transitions. [2023-11-12 02:25:12,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 317.1666666666667) internal successors, (1903), 6 states have internal predecessors, (1903), 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) [2023-11-12 02:25:12,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 791.0) internal successors, (5537), 7 states have internal predecessors, (5537), 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) [2023-11-12 02:25:12,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 791.0) internal successors, (5537), 7 states have internal predecessors, (5537), 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) [2023-11-12 02:25:12,083 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 274 flow. Second operand 6 states and 1903 transitions. [2023-11-12 02:25:12,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 174 transitions, 816 flow [2023-11-12 02:25:12,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 798 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:12,089 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 320 flow [2023-11-12 02:25:12,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=791, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2023-11-12 02:25:12,091 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2023-11-12 02:25:12,091 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 320 flow [2023-11-12 02:25:12,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 291.90909090909093) internal successors, (3211), 11 states have internal predecessors, (3211), 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) [2023-11-12 02:25:12,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:12,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:12,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:12,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f027ee27-e358-4941-a62a-0b1933cf81a9/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:25:12,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2023-11-12 02:25:12,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 459262642, now seen corresponding path program 1 times [2023-11-12 02:25:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:12,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666065146] [2023-11-12 02:25:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:12,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:25:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:25:12,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:25:12,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:25:12,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (123 of 124 remaining) [2023-11-12 02:25:12,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 124 remaining) [2023-11-12 02:25:12,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 124 remaining) [2023-11-12 02:25:12,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 124 remaining) [2023-11-12 02:25:12,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 124 remaining) [2023-11-12 02:25:12,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 124 remaining) [2023-11-12 02:25:12,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 124 remaining) [2023-11-12 02:25:12,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 124 remaining) [2023-11-12 02:25:12,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 124 remaining) [2023-11-12 02:25:12,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 124 remaining) [2023-11-12 02:25:12,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 124 remaining) [2023-11-12 02:25:12,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 124 remaining) [2023-11-12 02:25:12,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 124 remaining) [2023-11-12 02:25:12,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (110 of 124 remaining) [2023-11-12 02:25:12,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 124 remaining) [2023-11-12 02:25:12,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 124 remaining) [2023-11-12 02:25:12,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 124 remaining) [2023-11-12 02:25:12,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 124 remaining) [2023-11-12 02:25:12,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 124 remaining) [2023-11-12 02:25:12,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 124 remaining) [2023-11-12 02:25:12,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (103 of 124 remaining) [2023-11-12 02:25:12,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 124 remaining) [2023-11-12 02:25:12,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 124 remaining) [2023-11-12 02:25:12,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 124 remaining) [2023-11-12 02:25:12,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 124 remaining) [2023-11-12 02:25:12,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 124 remaining) [2023-11-12 02:25:12,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 124 remaining) [2023-11-12 02:25:12,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 124 remaining) [2023-11-12 02:25:12,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 124 remaining) [2023-11-12 02:25:12,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 124 remaining) [2023-11-12 02:25:12,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 124 remaining) [2023-11-12 02:25:12,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 124 remaining) [2023-11-12 02:25:12,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 124 remaining) [2023-11-12 02:25:12,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 124 remaining) [2023-11-12 02:25:12,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 124 remaining) [2023-11-12 02:25:12,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 124 remaining) [2023-11-12 02:25:12,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 124 remaining) [2023-11-12 02:25:12,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 124 remaining) [2023-11-12 02:25:12,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 124 remaining) [2023-11-12 02:25:12,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 124 remaining) [2023-11-12 02:25:12,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 124 remaining) [2023-11-12 02:25:12,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 124 remaining) [2023-11-12 02:25:12,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 124 remaining) [2023-11-12 02:25:12,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 124 remaining) [2023-11-12 02:25:12,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 124 remaining) [2023-11-12 02:25:12,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 124 remaining) [2023-11-12 02:25:12,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 124 remaining) [2023-11-12 02:25:12,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 124 remaining) [2023-11-12 02:25:12,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 124 remaining) [2023-11-12 02:25:12,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 124 remaining) [2023-11-12 02:25:12,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 124 remaining) [2023-11-12 02:25:12,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 124 remaining) [2023-11-12 02:25:12,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 124 remaining) [2023-11-12 02:25:12,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 124 remaining) [2023-11-12 02:25:12,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 124 remaining) [2023-11-12 02:25:12,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 124 remaining) [2023-11-12 02:25:12,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 124 remaining) [2023-11-12 02:25:12,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 124 remaining) [2023-11-12 02:25:12,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 124 remaining) [2023-11-12 02:25:12,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 124 remaining) [2023-11-12 02:25:12,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 124 remaining) [2023-11-12 02:25:12,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 124 remaining) [2023-11-12 02:25:12,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 124 remaining) [2023-11-12 02:25:12,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 124 remaining) [2023-11-12 02:25:12,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 124 remaining) [2023-11-12 02:25:12,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 124 remaining) [2023-11-12 02:25:12,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 124 remaining) [2023-11-12 02:25:12,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 124 remaining) [2023-11-12 02:25:12,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 124 remaining) [2023-11-12 02:25:12,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 124 remaining) [2023-11-12 02:25:12,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 124 remaining) [2023-11-12 02:25:12,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 124 remaining) [2023-11-12 02:25:12,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 124 remaining) [2023-11-12 02:25:12,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 124 remaining) [2023-11-12 02:25:12,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 124 remaining) [2023-11-12 02:25:12,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (48 of 124 remaining) [2023-11-12 02:25:12,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 124 remaining) [2023-11-12 02:25:12,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 124 remaining) [2023-11-12 02:25:12,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 124 remaining) [2023-11-12 02:25:12,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 124 remaining) [2023-11-12 02:25:12,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 124 remaining) [2023-11-12 02:25:12,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 124 remaining) [2023-11-12 02:25:12,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 124 remaining) [2023-11-12 02:25:12,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 124 remaining) [2023-11-12 02:25:12,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 124 remaining) [2023-11-12 02:25:12,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 124 remaining) [2023-11-12 02:25:12,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 124 remaining) [2023-11-12 02:25:12,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 124 remaining) [2023-11-12 02:25:12,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 124 remaining) [2023-11-12 02:25:12,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 124 remaining) [2023-11-12 02:25:12,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 124 remaining) [2023-11-12 02:25:12,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 124 remaining) [2023-11-12 02:25:12,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 124 remaining) [2023-11-12 02:25:12,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 124 remaining) [2023-11-12 02:25:12,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 124 remaining) [2023-11-12 02:25:12,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 124 remaining) [2023-11-12 02:25:12,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 124 remaining) [2023-11-12 02:25:12,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 124 remaining) [2023-11-12 02:25:12,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 124 remaining) [2023-11-12 02:25:12,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 124 remaining) [2023-11-12 02:25:12,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 124 remaining) [2023-11-12 02:25:12,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 124 remaining) [2023-11-12 02:25:12,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 124 remaining) [2023-11-12 02:25:12,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 124 remaining) [2023-11-12 02:25:12,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 124 remaining) [2023-11-12 02:25:12,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 124 remaining) [2023-11-12 02:25:12,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 124 remaining) [2023-11-12 02:25:12,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 124 remaining) [2023-11-12 02:25:12,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 124 remaining) [2023-11-12 02:25:12,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 124 remaining) [2023-11-12 02:25:12,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 124 remaining) [2023-11-12 02:25:12,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 124 remaining) [2023-11-12 02:25:12,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 124 remaining) [2023-11-12 02:25:12,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 124 remaining) [2023-11-12 02:25:12,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 124 remaining) [2023-11-12 02:25:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 124 remaining) [2023-11-12 02:25:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 124 remaining) [2023-11-12 02:25:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 124 remaining) [2023-11-12 02:25:12,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 124 remaining) [2023-11-12 02:25:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 124 remaining) [2023-11-12 02:25:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 124 remaining) [2023-11-12 02:25:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 124 remaining) [2023-11-12 02:25:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 124 remaining) [2023-11-12 02:25:12,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 124 remaining) [2023-11-12 02:25:12,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:25:12,413 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:12,416 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:25:12,417 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:25:12,576 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:25:12,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:12,833 INFO L124 PetriNetUnfolderBase]: 38/677 cut-off events. [2023-11-12 02:25:12,833 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:12,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 677 events. 38/677 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2724 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 540. Up to 8 conditions per place. [2023-11-12 02:25:12,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:12,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:12,860 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:12,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:12,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:12,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 578 places, 605 transitions, 1226 flow [2023-11-12 02:25:13,134 INFO L124 PetriNetUnfolderBase]: 38/677 cut-off events. [2023-11-12 02:25:13,134 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:13,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 677 events. 38/677 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2724 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 540. Up to 8 conditions per place. [2023-11-12 02:25:13,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 155116