./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/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_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/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_374a38ce-2765-4b24-b572-3e1ec3f90487/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 d52a8576f41904f21a1a217cd81ed2d36ac8928d5a02d745a0c93a101e2535cf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:51,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:51,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:09:51,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:51,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:51,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:51,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:51,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:51,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:51,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:51,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:51,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:51,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:51,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:51,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:51,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:51,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:51,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:51,367 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:09:51,368 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:09:51,368 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:09:51,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:51,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:09:51,370 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:09:51,370 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:51,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:51,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:51,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:51,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:51,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:51,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:51,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:51,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:51,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:51,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:51,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:51,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:51,377 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:51,377 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_374a38ce-2765-4b24-b572-3e1ec3f90487/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d52a8576f41904f21a1a217cd81ed2d36ac8928d5a02d745a0c93a101e2535cf [2023-11-12 02:09:51,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:51,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:51,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:51,709 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:51,709 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:51,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe020_rmo.i [2023-11-12 02:09:54,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:55,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:55,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/sv-benchmarks/c/pthread-wmm/safe020_rmo.i [2023-11-12 02:09:55,073 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/data/7e06868a4/fc4b5fe2f4a54da6bdb8aa340b761f0e/FLAGf6dbc4858 [2023-11-12 02:09:55,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/data/7e06868a4/fc4b5fe2f4a54da6bdb8aa340b761f0e [2023-11-12 02:09:55,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:55,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:55,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:55,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:55,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:55,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791b8720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55, skipping insertion in model container [2023-11-12 02:09:55,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:55,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:55,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:55,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:55,775 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:55,775 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:55,783 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:55,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55 WrapperNode [2023-11-12 02:09:55,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:55,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:55,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:55,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:55,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,837 INFO L138 Inliner]: procedures = 176, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2023-11-12 02:09:55,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:55,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:55,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:55,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:55,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:55,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:55,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:55,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:55,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (1/1) ... [2023-11-12 02:09:55,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:55,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:55,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:55,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_374a38ce-2765-4b24-b572-3e1ec3f90487/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:09:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:09:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:09:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:09:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:09:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:09:56,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:09:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:09:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:09:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:09:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:09:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:09:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:56,011 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 02:09:56,186 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:56,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:56,809 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:57,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:57,379 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:09:57,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:57 BoogieIcfgContainer [2023-11-12 02:09:57,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:57,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:57,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:57,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:57,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:55" (1/3) ... [2023-11-12 02:09:57,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c148375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:57, skipping insertion in model container [2023-11-12 02:09:57,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:55" (2/3) ... [2023-11-12 02:09:57,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c148375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:57, skipping insertion in model container [2023-11-12 02:09:57,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:57" (3/3) ... [2023-11-12 02:09:57,390 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_rmo.i [2023-11-12 02:09:57,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:57,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-11-12 02:09:57,411 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:09:57,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:09:57,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 181 transitions, 374 flow [2023-11-12 02:09:57,730 INFO L124 PetriNetUnfolderBase]: 3/178 cut-off events. [2023-11-12 02:09:57,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:57,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 178 events. 3/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 272 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-12 02:09:57,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 181 transitions, 374 flow [2023-11-12 02:09:57,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 178 transitions, 365 flow [2023-11-12 02:09:57,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:57,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 178 transitions, 365 flow [2023-11-12 02:09:57,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 178 transitions, 365 flow [2023-11-12 02:09:57,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 178 transitions, 365 flow [2023-11-12 02:09:57,847 INFO L124 PetriNetUnfolderBase]: 3/178 cut-off events. [2023-11-12 02:09:57,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:57,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 178 events. 3/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 271 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-12 02:09:57,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 7658 [2023-11-12 02:10:08,827 INFO L134 LiptonReduction]: Checked pairs total: 41263 [2023-11-12 02:10:08,828 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-11-12 02:10:08,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:10:08,851 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;@7dd3311c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:10:08,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2023-11-12 02:10:08,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:10:08,854 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:10:08,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:08,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:08,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:10:08,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:08,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1036, now seen corresponding path program 1 times [2023-11-12 02:10:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333368599] [2023-11-12 02:10:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:08,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:09,012 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 02:10:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333368599] [2023-11-12 02:10:09,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333368599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:09,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:10:09,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884717579] [2023-11-12 02:10:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:09,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:10:09,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:10:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:10:09,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 341 [2023-11-12 02:10:09,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 161 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:09,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:09,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 341 [2023-11-12 02:10:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:15,541 INFO L124 PetriNetUnfolderBase]: 23428/32747 cut-off events. [2023-11-12 02:10:15,541 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:10:15,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65513 conditions, 32747 events. 23428/32747 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 215998 event pairs, 23428 based on Foata normal form. 0/13673 useless extension candidates. Maximal degree in co-relation 65502. Up to 32628 conditions per place. [2023-11-12 02:10:15,822 INFO L140 encePairwiseOnDemand]: 313/341 looper letters, 45 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2023-11-12 02:10:15,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 191 flow [2023-11-12 02:10:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:10:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:10:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 333 transitions. [2023-11-12 02:10:15,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48826979472140764 [2023-11-12 02:10:15,846 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 333 transitions. [2023-11-12 02:10:15,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 333 transitions. [2023-11-12 02:10:15,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:15,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 333 transitions. [2023-11-12 02:10:15,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 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 02:10:15,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 02:10:15,869 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 02:10:15,871 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 161 flow. Second operand 2 states and 333 transitions. [2023-11-12 02:10:15,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 191 flow [2023-11-12 02:10:15,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:10:15,885 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 98 flow [2023-11-12 02:10:15,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-12 02:10:15,892 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -30 predicate places. [2023-11-12 02:10:15,892 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 98 flow [2023-11-12 02:10:15,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:15,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:15,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:10:15,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:10:15,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:15,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash 31733724, now seen corresponding path program 1 times [2023-11-12 02:10:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680083786] [2023-11-12 02:10:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:16,276 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 02:10:16,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:16,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680083786] [2023-11-12 02:10:16,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680083786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:16,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:16,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:16,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143943126] [2023-11-12 02:10:16,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 341 [2023-11-12 02:10:16,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 02:10:16,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:16,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 341 [2023-11-12 02:10:16,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:19,535 INFO L124 PetriNetUnfolderBase]: 14811/21847 cut-off events. [2023-11-12 02:10:19,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:19,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43469 conditions, 21847 events. 14811/21847 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1479. Compared 147679 event pairs, 9091 based on Foata normal form. 0/11757 useless extension candidates. Maximal degree in co-relation 43466. Up to 13032 conditions per place. [2023-11-12 02:10:19,675 INFO L140 encePairwiseOnDemand]: 322/341 looper letters, 52 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2023-11-12 02:10:19,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 256 flow [2023-11-12 02:10:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-12 02:10:19,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304007820136853 [2023-11-12 02:10:19,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-12 02:10:19,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-12 02:10:19,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:19,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-12 02:10:19,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 02:10:19,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:19,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:19,693 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 98 flow. Second operand 3 states and 443 transitions. [2023-11-12 02:10:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 256 flow [2023-11-12 02:10:19,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:19,697 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 180 flow [2023-11-12 02:10:19,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-12 02:10:19,698 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -28 predicate places. [2023-11-12 02:10:19,699 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 180 flow [2023-11-12 02:10:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 02:10:19,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:19,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:10:19,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:10:19,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:19,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 31733725, now seen corresponding path program 1 times [2023-11-12 02:10:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:19,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805374146] [2023-11-12 02:10:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:19,878 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 02:10:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805374146] [2023-11-12 02:10:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805374146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:19,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995492448] [2023-11-12 02:10:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:19,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 341 [2023-11-12 02:10:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:19,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:19,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 341 [2023-11-12 02:10:19,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:21,288 INFO L124 PetriNetUnfolderBase]: 4316/6749 cut-off events. [2023-11-12 02:10:21,288 INFO L125 PetriNetUnfolderBase]: For 2021/2021 co-relation queries the response was YES. [2023-11-12 02:10:21,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19179 conditions, 6749 events. 4316/6749 cut-off events. For 2021/2021 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 41504 event pairs, 3129 based on Foata normal form. 1935/7754 useless extension candidates. Maximal degree in co-relation 19174. Up to 6593 conditions per place. [2023-11-12 02:10:21,347 INFO L140 encePairwiseOnDemand]: 331/341 looper letters, 41 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-12 02:10:21,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 246 flow [2023-11-12 02:10:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-12 02:10:21,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173998044965787 [2023-11-12 02:10:21,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-12 02:10:21,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-12 02:10:21,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:21,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-12 02:10:21,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 02:10:21,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:21,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:21,359 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 180 flow. Second operand 3 states and 427 transitions. [2023-11-12 02:10:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 246 flow [2023-11-12 02:10:21,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:21,386 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 144 flow [2023-11-12 02:10:21,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-12 02:10:21,388 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -37 predicate places. [2023-11-12 02:10:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 144 flow [2023-11-12 02:10:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:21,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:21,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:10:21,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:21,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash 69075597, now seen corresponding path program 1 times [2023-11-12 02:10:21,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335461098] [2023-11-12 02:10:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:21,741 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 02:10:21,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335461098] [2023-11-12 02:10:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335461098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:21,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476732100] [2023-11-12 02:10:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:21,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 341 [2023-11-12 02:10:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:21,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:21,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 341 [2023-11-12 02:10:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:23,027 INFO L124 PetriNetUnfolderBase]: 5160/7821 cut-off events. [2023-11-12 02:10:23,027 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-11-12 02:10:23,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20594 conditions, 7821 events. 5160/7821 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 46427 event pairs, 1387 based on Foata normal form. 0/5953 useless extension candidates. Maximal degree in co-relation 20589. Up to 7418 conditions per place. [2023-11-12 02:10:23,071 INFO L140 encePairwiseOnDemand]: 337/341 looper letters, 71 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-11-12 02:10:23,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 392 flow [2023-11-12 02:10:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-11-12 02:10:23,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43206256109481916 [2023-11-12 02:10:23,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-11-12 02:10:23,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-11-12 02:10:23,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:23,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-11-12 02:10:23,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:23,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:23,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:23,082 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 144 flow. Second operand 3 states and 442 transitions. [2023-11-12 02:10:23,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 392 flow [2023-11-12 02:10:23,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:23,085 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 162 flow [2023-11-12 02:10:23,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-12 02:10:23,087 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -35 predicate places. [2023-11-12 02:10:23,087 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 162 flow [2023-11-12 02:10:23,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:23,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:23,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:23,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:10:23,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 69075366, now seen corresponding path program 1 times [2023-11-12 02:10:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762348946] [2023-11-12 02:10:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:23,273 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 02:10:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762348946] [2023-11-12 02:10:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762348946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:23,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:23,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686034092] [2023-11-12 02:10:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:23,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 341 [2023-11-12 02:10:23,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:23,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:23,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 341 [2023-11-12 02:10:23,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:24,398 INFO L124 PetriNetUnfolderBase]: 4609/7146 cut-off events. [2023-11-12 02:10:24,398 INFO L125 PetriNetUnfolderBase]: For 1431/1431 co-relation queries the response was YES. [2023-11-12 02:10:24,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19838 conditions, 7146 events. 4609/7146 cut-off events. For 1431/1431 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 44045 event pairs, 1536 based on Foata normal form. 0/5394 useless extension candidates. Maximal degree in co-relation 19832. Up to 5447 conditions per place. [2023-11-12 02:10:24,450 INFO L140 encePairwiseOnDemand]: 337/341 looper letters, 64 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-12 02:10:24,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 383 flow [2023-11-12 02:10:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-11-12 02:10:24,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2023-11-12 02:10:24,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-11-12 02:10:24,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-11-12 02:10:24,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:24,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-11-12 02:10:24,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 02:10:24,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:24,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:24,467 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 162 flow. Second operand 3 states and 441 transitions. [2023-11-12 02:10:24,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 383 flow [2023-11-12 02:10:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:24,473 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 172 flow [2023-11-12 02:10:24,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-12 02:10:24,478 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -33 predicate places. [2023-11-12 02:10:24,478 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 172 flow [2023-11-12 02:10:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:24,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:24,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:24,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:10:24,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:24,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1751459634, now seen corresponding path program 1 times [2023-11-12 02:10:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:24,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099693333] [2023-11-12 02:10:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:24,909 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 02:10:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099693333] [2023-11-12 02:10:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099693333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:24,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627741841] [2023-11-12 02:10:24,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:24,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 341 [2023-11-12 02:10:24,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 02:10:24,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:24,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 341 [2023-11-12 02:10:24,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:26,048 INFO L124 PetriNetUnfolderBase]: 4597/7122 cut-off events. [2023-11-12 02:10:26,048 INFO L125 PetriNetUnfolderBase]: For 1851/1851 co-relation queries the response was YES. [2023-11-12 02:10:26,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20221 conditions, 7122 events. 4597/7122 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 43806 event pairs, 1555 based on Foata normal form. 12/5570 useless extension candidates. Maximal degree in co-relation 20214. Up to 5452 conditions per place. [2023-11-12 02:10:26,091 INFO L140 encePairwiseOnDemand]: 338/341 looper letters, 63 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-12 02:10:26,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 386 flow [2023-11-12 02:10:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-11-12 02:10:26,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43206256109481916 [2023-11-12 02:10:26,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-11-12 02:10:26,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-11-12 02:10:26,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:26,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-11-12 02:10:26,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:26,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:26,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:26,101 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 172 flow. Second operand 3 states and 442 transitions. [2023-11-12 02:10:26,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 386 flow [2023-11-12 02:10:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:26,106 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 177 flow [2023-11-12 02:10:26,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-12 02:10:26,107 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-12 02:10:26,107 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 177 flow [2023-11-12 02:10:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 02:10:26,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:26,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:26,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:10:26,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:26,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2141342370, now seen corresponding path program 1 times [2023-11-12 02:10:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319318369] [2023-11-12 02:10:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:26,192 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 02:10:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319318369] [2023-11-12 02:10:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319318369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445232055] [2023-11-12 02:10:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:26,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:26,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:26,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 341 [2023-11-12 02:10:26,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 02:10:26,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:26,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 341 [2023-11-12 02:10:26,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:27,299 INFO L124 PetriNetUnfolderBase]: 5320/8279 cut-off events. [2023-11-12 02:10:27,299 INFO L125 PetriNetUnfolderBase]: For 2245/2245 co-relation queries the response was YES. [2023-11-12 02:10:27,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 8279 events. 5320/8279 cut-off events. For 2245/2245 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 52225 event pairs, 2028 based on Foata normal form. 0/6534 useless extension candidates. Maximal degree in co-relation 23733. Up to 6086 conditions per place. [2023-11-12 02:10:27,349 INFO L140 encePairwiseOnDemand]: 335/341 looper letters, 52 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2023-11-12 02:10:27,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 341 flow [2023-11-12 02:10:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-12 02:10:27,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173998044965787 [2023-11-12 02:10:27,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-12 02:10:27,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-12 02:10:27,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:27,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-12 02:10:27,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 02:10:27,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:27,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:27,358 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 177 flow. Second operand 3 states and 427 transitions. [2023-11-12 02:10:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 341 flow [2023-11-12 02:10:27,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:27,364 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 209 flow [2023-11-12 02:10:27,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-12 02:10:27,365 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-12 02:10:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 209 flow [2023-11-12 02:10:27,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 02:10:27,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:27,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:10:27,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:27,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2141342371, now seen corresponding path program 1 times [2023-11-12 02:10:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637918555] [2023-11-12 02:10:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:27,539 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 02:10:27,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637918555] [2023-11-12 02:10:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637918555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961608922] [2023-11-12 02:10:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:27,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:10:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:10:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:10:27,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 341 [2023-11-12 02:10:27,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 02:10:27,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:27,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 341 [2023-11-12 02:10:27,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:28,939 INFO L124 PetriNetUnfolderBase]: 5195/8094 cut-off events. [2023-11-12 02:10:28,939 INFO L125 PetriNetUnfolderBase]: For 3639/3639 co-relation queries the response was YES. [2023-11-12 02:10:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24590 conditions, 8094 events. 5195/8094 cut-off events. For 3639/3639 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 51065 event pairs, 1542 based on Foata normal form. 48/6397 useless extension candidates. Maximal degree in co-relation 24581. Up to 6423 conditions per place. [2023-11-12 02:10:28,998 INFO L140 encePairwiseOnDemand]: 338/341 looper letters, 64 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-12 02:10:28,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 423 flow [2023-11-12 02:10:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:10:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:10:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-11-12 02:10:29,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2023-11-12 02:10:29,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-11-12 02:10:29,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-11-12 02:10:29,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:29,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-11-12 02:10:29,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 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 02:10:29,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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 02:10:29,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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 02:10:29,009 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 209 flow. Second operand 4 states and 562 transitions. [2023-11-12 02:10:29,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 423 flow [2023-11-12 02:10:29,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:29,054 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 202 flow [2023-11-12 02:10:29,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-12 02:10:29,055 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-12 02:10:29,056 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 202 flow [2023-11-12 02:10:29,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 02:10:29,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:29,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:10:29,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:29,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1539327100, now seen corresponding path program 1 times [2023-11-12 02:10:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127004667] [2023-11-12 02:10:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:30,921 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 02:10:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127004667] [2023-11-12 02:10:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127004667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:10:30,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058274869] [2023-11-12 02:10:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:10:30,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:10:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:10:31,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 341 [2023-11-12 02:10:31,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 111.625) internal successors, (893), 8 states have internal predecessors, (893), 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 02:10:31,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:31,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 341 [2023-11-12 02:10:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:32,795 INFO L124 PetriNetUnfolderBase]: 5081/7901 cut-off events. [2023-11-12 02:10:32,795 INFO L125 PetriNetUnfolderBase]: For 3610/3610 co-relation queries the response was YES. [2023-11-12 02:10:32,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23659 conditions, 7901 events. 5081/7901 cut-off events. For 3610/3610 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 49363 event pairs, 1576 based on Foata normal form. 15/6251 useless extension candidates. Maximal degree in co-relation 23651. Up to 6147 conditions per place. [2023-11-12 02:10:32,842 INFO L140 encePairwiseOnDemand]: 331/341 looper letters, 102 selfloop transitions, 31 changer transitions 0/135 dead transitions. [2023-11-12 02:10:32,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 135 transitions, 829 flow [2023-11-12 02:10:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:10:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:10:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1202 transitions. [2023-11-12 02:10:32,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35249266862170087 [2023-11-12 02:10:32,849 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1202 transitions. [2023-11-12 02:10:32,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1202 transitions. [2023-11-12 02:10:32,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:32,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1202 transitions. [2023-11-12 02:10:32,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.2) internal successors, (1202), 10 states have internal predecessors, (1202), 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 02:10:32,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 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 02:10:32,862 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 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 02:10:32,863 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 202 flow. Second operand 10 states and 1202 transitions. [2023-11-12 02:10:32,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 135 transitions, 829 flow [2023-11-12 02:10:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 135 transitions, 820 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:32,879 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 461 flow [2023-11-12 02:10:32,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=461, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-11-12 02:10:32,881 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -20 predicate places. [2023-11-12 02:10:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 461 flow [2023-11-12 02:10:32,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.625) internal successors, (893), 8 states have internal predecessors, (893), 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 02:10:32,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:32,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:10:32,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1957164245, now seen corresponding path program 1 times [2023-11-12 02:10:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285956902] [2023-11-12 02:10:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:32,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:33,254 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 02:10:33,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285956902] [2023-11-12 02:10:33,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285956902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:33,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:10:33,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804565194] [2023-11-12 02:10:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:33,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 341 [2023-11-12 02:10:33,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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 02:10:33,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:33,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 341 [2023-11-12 02:10:33,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:34,539 INFO L124 PetriNetUnfolderBase]: 4271/6703 cut-off events. [2023-11-12 02:10:34,539 INFO L125 PetriNetUnfolderBase]: For 5243/5243 co-relation queries the response was YES. [2023-11-12 02:10:34,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22634 conditions, 6703 events. 4271/6703 cut-off events. For 5243/5243 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 40899 event pairs, 807 based on Foata normal form. 48/5600 useless extension candidates. Maximal degree in co-relation 22621. Up to 2793 conditions per place. [2023-11-12 02:10:34,585 INFO L140 encePairwiseOnDemand]: 325/341 looper letters, 77 selfloop transitions, 31 changer transitions 0/110 dead transitions. [2023-11-12 02:10:34,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 837 flow [2023-11-12 02:10:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:10:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:10:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2023-11-12 02:10:34,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894428152492669 [2023-11-12 02:10:34,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2023-11-12 02:10:34,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2023-11-12 02:10:34,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:34,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2023-11-12 02:10:34,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 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 02:10:34,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 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 02:10:34,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 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 02:10:34,598 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 461 flow. Second operand 5 states and 664 transitions. [2023-11-12 02:10:34,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 837 flow [2023-11-12 02:10:34,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 833 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:34,633 INFO L231 Difference]: Finished difference. Result has 70 places, 85 transitions, 674 flow [2023-11-12 02:10:34,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=674, PETRI_PLACES=70, PETRI_TRANSITIONS=85} [2023-11-12 02:10:34,634 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -14 predicate places. [2023-11-12 02:10:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 85 transitions, 674 flow [2023-11-12 02:10:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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 02:10:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:10:34,636 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2017646456, now seen corresponding path program 1 times [2023-11-12 02:10:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13554021] [2023-11-12 02:10:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:34,819 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 02:10:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13554021] [2023-11-12 02:10:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13554021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940377351] [2023-11-12 02:10:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:34,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 341 [2023-11-12 02:10:34,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 85 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:34,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:34,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 341 [2023-11-12 02:10:34,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:35,279 INFO L124 PetriNetUnfolderBase]: 1335/2326 cut-off events. [2023-11-12 02:10:35,279 INFO L125 PetriNetUnfolderBase]: For 3333/3333 co-relation queries the response was YES. [2023-11-12 02:10:35,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9091 conditions, 2326 events. 1335/2326 cut-off events. For 3333/3333 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13375 event pairs, 370 based on Foata normal form. 27/2123 useless extension candidates. Maximal degree in co-relation 9075. Up to 2136 conditions per place. [2023-11-12 02:10:35,292 INFO L140 encePairwiseOnDemand]: 336/341 looper letters, 92 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-11-12 02:10:35,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 896 flow [2023-11-12 02:10:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-11-12 02:10:35,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2023-11-12 02:10:35,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-11-12 02:10:35,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-11-12 02:10:35,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:35,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-11-12 02:10:35,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 02:10:35,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:35,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:35,302 INFO L175 Difference]: Start difference. First operand has 70 places, 85 transitions, 674 flow. Second operand 3 states and 426 transitions. [2023-11-12 02:10:35,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 896 flow [2023-11-12 02:10:35,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 896 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:35,331 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 627 flow [2023-11-12 02:10:35,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=627, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-11-12 02:10:35,334 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2023-11-12 02:10:35,334 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 627 flow [2023-11-12 02:10:35,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:35,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:35,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:35,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:10:35,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:35,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2065034806, now seen corresponding path program 1 times [2023-11-12 02:10:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927372966] [2023-11-12 02:10:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:35,577 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 02:10:35,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:35,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927372966] [2023-11-12 02:10:35,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927372966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:35,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:35,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889968270] [2023-11-12 02:10:35,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:10:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:10:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:10:35,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 341 [2023-11-12 02:10:35,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 627 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:35,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:35,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 341 [2023-11-12 02:10:35,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:35,867 INFO L124 PetriNetUnfolderBase]: 283/563 cut-off events. [2023-11-12 02:10:35,867 INFO L125 PetriNetUnfolderBase]: For 785/785 co-relation queries the response was YES. [2023-11-12 02:10:35,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 563 events. 283/563 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2303 event pairs, 75 based on Foata normal form. 29/561 useless extension candidates. Maximal degree in co-relation 2186. Up to 292 conditions per place. [2023-11-12 02:10:35,871 INFO L140 encePairwiseOnDemand]: 336/341 looper letters, 84 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2023-11-12 02:10:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 789 flow [2023-11-12 02:10:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:10:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:10:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-11-12 02:10:35,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2023-11-12 02:10:35,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-11-12 02:10:35,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-11-12 02:10:35,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:35,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-11-12 02:10:35,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 02:10:35,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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 02:10:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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 02:10:35,881 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 627 flow. Second operand 4 states and 564 transitions. [2023-11-12 02:10:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 789 flow [2023-11-12 02:10:35,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 764 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-12 02:10:35,889 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 469 flow [2023-11-12 02:10:35,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-11-12 02:10:35,891 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -12 predicate places. [2023-11-12 02:10:35,891 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 469 flow [2023-11-12 02:10:35,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:35,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:35,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:10:35,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:35,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1787845629, now seen corresponding path program 1 times [2023-11-12 02:10:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784935820] [2023-11-12 02:10:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:36,211 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 02:10:36,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:36,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784935820] [2023-11-12 02:10:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784935820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:36,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:10:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849749759] [2023-11-12 02:10:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:10:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:10:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:10:36,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 341 [2023-11-12 02:10:36,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 02:10:36,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:36,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 341 [2023-11-12 02:10:36,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:36,419 INFO L124 PetriNetUnfolderBase]: 168/313 cut-off events. [2023-11-12 02:10:36,419 INFO L125 PetriNetUnfolderBase]: For 619/619 co-relation queries the response was YES. [2023-11-12 02:10:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 313 events. 168/313 cut-off events. For 619/619 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1044 event pairs, 52 based on Foata normal form. 10/321 useless extension candidates. Maximal degree in co-relation 1189. Up to 137 conditions per place. [2023-11-12 02:10:36,422 INFO L140 encePairwiseOnDemand]: 336/341 looper letters, 51 selfloop transitions, 10 changer transitions 1/64 dead transitions. [2023-11-12 02:10:36,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 494 flow [2023-11-12 02:10:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:10:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:10:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 683 transitions. [2023-11-12 02:10:36,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005865102639296 [2023-11-12 02:10:36,425 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 683 transitions. [2023-11-12 02:10:36,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 683 transitions. [2023-11-12 02:10:36,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:36,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 683 transitions. [2023-11-12 02:10:36,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 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 02:10:36,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 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 02:10:36,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 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 02:10:36,432 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 469 flow. Second operand 5 states and 683 transitions. [2023-11-12 02:10:36,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 494 flow [2023-11-12 02:10:36,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 409 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-11-12 02:10:36,436 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 194 flow [2023-11-12 02:10:36,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2023-11-12 02:10:36,437 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -30 predicate places. [2023-11-12 02:10:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 194 flow [2023-11-12 02:10:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 02:10:36,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:36,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:36,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:10:36,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:36,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1301335412, now seen corresponding path program 1 times [2023-11-12 02:10:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265515679] [2023-11-12 02:10:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:36,764 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 02:10:36,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265515679] [2023-11-12 02:10:36,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265515679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:36,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:36,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654750484] [2023-11-12 02:10:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:36,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 341 [2023-11-12 02:10:36,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 02:10:36,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:36,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 341 [2023-11-12 02:10:36,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:36,938 INFO L124 PetriNetUnfolderBase]: 225/415 cut-off events. [2023-11-12 02:10:36,938 INFO L125 PetriNetUnfolderBase]: For 689/689 co-relation queries the response was YES. [2023-11-12 02:10:36,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 415 events. 225/415 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1448 event pairs, 106 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 1522. Up to 302 conditions per place. [2023-11-12 02:10:36,941 INFO L140 encePairwiseOnDemand]: 338/341 looper letters, 53 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-12 02:10:36,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 415 flow [2023-11-12 02:10:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-11-12 02:10:36,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115347018572825 [2023-11-12 02:10:36,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-11-12 02:10:36,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-11-12 02:10:36,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:36,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-11-12 02:10:36,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 02:10:36,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:36,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 02:10:36,948 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 194 flow. Second operand 3 states and 421 transitions. [2023-11-12 02:10:36,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 415 flow [2023-11-12 02:10:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 365 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-12 02:10:36,952 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 179 flow [2023-11-12 02:10:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-11-12 02:10:36,952 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -31 predicate places. [2023-11-12 02:10:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 179 flow [2023-11-12 02:10:36,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 02:10:36,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:36,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:10:36,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-12 02:10:36,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 898135786, now seen corresponding path program 2 times [2023-11-12 02:10:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893371665] [2023-11-12 02:10:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat