./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:08,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:08,714 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:13:08,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:08,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:08,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:08,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:08,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:08,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:08,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:08,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:08,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:08,751 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:08,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:08,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:13:08,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:08,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:13:08,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:08,754 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:13:08,755 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:13:08,755 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:13:08,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:08,756 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:13:08,757 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:13:08,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:13:08,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:08,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:08,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:08,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:08,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:08,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:08,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:08,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:08,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:08,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:08,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:08,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:08,762 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:08,762 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_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f [2023-11-06 22:13:09,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:09,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:09,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:09,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:09,131 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:09,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i [2023-11-06 22:13:12,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:12,432 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:12,433 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i [2023-11-06 22:13:12,455 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/data/309041d0d/204ac04921814d53a262057fd181902e/FLAG6e5a7f506 [2023-11-06 22:13:12,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/data/309041d0d/204ac04921814d53a262057fd181902e [2023-11-06 22:13:12,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:12,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:12,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:12,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:12,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:12,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:12" (1/1) ... [2023-11-06 22:13:12,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19035bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:12, skipping insertion in model container [2023-11-06 22:13:12,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:12" (1/1) ... [2023-11-06 22:13:12,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:13:13,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:13,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:13:13,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:13,277 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:13,278 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:13,285 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:13:13,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13 WrapperNode [2023-11-06 22:13:13,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:13,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:13,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:13:13,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:13:13,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,373 INFO L138 Inliner]: procedures = 176, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-06 22:13:13,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:13,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:13:13,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:13:13,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:13:13,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:13:13,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:13:13,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:13:13,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:13:13,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (1/1) ... [2023-11-06 22:13:13,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:13,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:13:13,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba97cf08-cf00-4179-9b6c-cc795971bf03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:13:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:13:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:13:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:13:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:13:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:13:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:13:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:13:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:13:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:13:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:13:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:13:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:13:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:13:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:13:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:13:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:13:13,521 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:13:13,732 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:13:13,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:13:14,510 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:13:15,307 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:13:15,308 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:13:15,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:15 BoogieIcfgContainer [2023-11-06 22:13:15,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:13:15,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:13:15,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:13:15,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:13:15,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:12" (1/3) ... [2023-11-06 22:13:15,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb30b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:15, skipping insertion in model container [2023-11-06 22:13:15,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:13" (2/3) ... [2023-11-06 22:13:15,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb30b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:15, skipping insertion in model container [2023-11-06 22:13:15,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:15" (3/3) ... [2023-11-06 22:13:15,359 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_rmo.oepc.i [2023-11-06 22:13:15,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:13:15,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-06 22:13:15,382 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:13:15,548 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:13:15,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 197 transitions, 406 flow [2023-11-06 22:13:15,761 INFO L124 PetriNetUnfolderBase]: 3/194 cut-off events. [2023-11-06 22:13:15,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:15,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 194 events. 3/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 359 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-06 22:13:15,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 197 transitions, 406 flow [2023-11-06 22:13:15,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 194 transitions, 397 flow [2023-11-06 22:13:15,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:13:15,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 194 transitions, 397 flow [2023-11-06 22:13:15,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 194 transitions, 397 flow [2023-11-06 22:13:15,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 194 transitions, 397 flow [2023-11-06 22:13:15,923 INFO L124 PetriNetUnfolderBase]: 3/194 cut-off events. [2023-11-06 22:13:15,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:15,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 194 events. 3/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 360 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-06 22:13:15,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 9508 [2023-11-06 22:13:48,321 INFO L134 LiptonReduction]: Checked pairs total: 44602 [2023-11-06 22:13:48,322 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-06 22:13:48,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:13:48,344 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;@2d4e3810, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:13:48,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-06 22:13:48,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:13:48,347 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:13:48,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:48,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:13:48,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:13:48,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1232, now seen corresponding path program 1 times [2023-11-06 22:13:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:48,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556409599] [2023-11-06 22:13:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:48,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:48,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:48,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556409599] [2023-11-06 22:13:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556409599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:48,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:13:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309297724] [2023-11-06 22:13:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:13:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:13:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:13:48,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 368 [2023-11-06 22:13:48,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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) [2023-11-06 22:13:48,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:48,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 368 [2023-11-06 22:13:48,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:54,339 INFO L124 PetriNetUnfolderBase]: 17324/24431 cut-off events. [2023-11-06 22:13:54,340 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:13:54,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48788 conditions, 24431 events. 17324/24431 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2184. Compared 170043 event pairs, 17324 based on Foata normal form. 0/9836 useless extension candidates. Maximal degree in co-relation 48777. Up to 24261 conditions per place. [2023-11-06 22:13:54,567 INFO L140 encePairwiseOnDemand]: 330/368 looper letters, 44 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-11-06 22:13:54,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 197 flow [2023-11-06 22:13:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:13:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:13:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 350 transitions. [2023-11-06 22:13:54,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2023-11-06 22:13:54,593 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 350 transitions. [2023-11-06 22:13:54,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 350 transitions. [2023-11-06 22:13:54,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:54,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 350 transitions. [2023-11-06 22:13:54,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:54,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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) [2023-11-06 22:13:54,615 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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) [2023-11-06 22:13:54,617 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 187 flow. Second operand 2 states and 350 transitions. [2023-11-06 22:13:54,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 197 flow [2023-11-06 22:13:54,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:54,628 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 106 flow [2023-11-06 22:13:54,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-06 22:13:54,636 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -40 predicate places. [2023-11-06 22:13:54,637 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 106 flow [2023-11-06 22:13:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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) [2023-11-06 22:13:54,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:54,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:13:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:13:54,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:13:54,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1217879, now seen corresponding path program 1 times [2023-11-06 22:13:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024547884] [2023-11-06 22:13:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024547884] [2023-11-06 22:13:55,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024547884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:55,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:55,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564504695] [2023-11-06 22:13:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:55,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:55,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 368 [2023-11-06 22:13:55,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-11-06 22:13:55,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:55,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 368 [2023-11-06 22:13:55,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:58,891 INFO L124 PetriNetUnfolderBase]: 14651/21557 cut-off events. [2023-11-06 22:13:58,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:58,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43054 conditions, 21557 events. 14651/21557 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 142471 event pairs, 9093 based on Foata normal form. 0/12074 useless extension candidates. Maximal degree in co-relation 43051. Up to 13154 conditions per place. [2023-11-06 22:13:59,017 INFO L140 encePairwiseOnDemand]: 346/368 looper letters, 53 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-11-06 22:13:59,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 266 flow [2023-11-06 22:13:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-11-06 22:13:59,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41032608695652173 [2023-11-06 22:13:59,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-11-06 22:13:59,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-11-06 22:13:59,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:59,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-11-06 22:13:59,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-06 22:13:59,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:13:59,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:13:59,032 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 106 flow. Second operand 3 states and 453 transitions. [2023-11-06 22:13:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 266 flow [2023-11-06 22:13:59,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:13:59,036 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 196 flow [2023-11-06 22:13:59,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-11-06 22:13:59,038 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -39 predicate places. [2023-11-06 22:13:59,039 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 196 flow [2023-11-06 22:13:59,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-11-06 22:13:59,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:59,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:13:59,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:13:59,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:13:59,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:59,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1217880, now seen corresponding path program 1 times [2023-11-06 22:13:59,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:59,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235194659] [2023-11-06 22:13:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:59,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235194659] [2023-11-06 22:13:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235194659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:59,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:59,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792998102] [2023-11-06 22:13:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:59,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:59,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:59,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 368 [2023-11-06 22:13:59,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2023-11-06 22:13:59,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:59,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 368 [2023-11-06 22:13:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:00,794 INFO L124 PetriNetUnfolderBase]: 4833/7601 cut-off events. [2023-11-06 22:14:00,795 INFO L125 PetriNetUnfolderBase]: For 2672/2843 co-relation queries the response was YES. [2023-11-06 22:14:00,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 7601 events. 4833/7601 cut-off events. For 2672/2843 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 49599 event pairs, 3378 based on Foata normal form. 1962/8403 useless extension candidates. Maximal degree in co-relation 21446. Up to 6720 conditions per place. [2023-11-06 22:14:00,848 INFO L140 encePairwiseOnDemand]: 357/368 looper letters, 38 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-06 22:14:00,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 254 flow [2023-11-06 22:14:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-06 22:14:00,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39402173913043476 [2023-11-06 22:14:00,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-06 22:14:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-06 22:14:00,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:00,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-06 22:14:00,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:00,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:00,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:00,860 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 196 flow. Second operand 3 states and 435 transitions. [2023-11-06 22:14:00,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 254 flow [2023-11-06 22:14:00,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:00,888 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 156 flow [2023-11-06 22:14:00,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-06 22:14:00,890 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -49 predicate places. [2023-11-06 22:14:00,890 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 156 flow [2023-11-06 22:14:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2023-11-06 22:14:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:00,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:00,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:00,897 INFO L85 PathProgramCache]: Analyzing trace with hash 404400095, now seen corresponding path program 1 times [2023-11-06 22:14:00,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:00,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873531382] [2023-11-06 22:14:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873531382] [2023-11-06 22:14:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873531382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:01,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:01,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631362827] [2023-11-06 22:14:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:01,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:01,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 368 [2023-11-06 22:14:01,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-11-06 22:14:01,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:01,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 368 [2023-11-06 22:14:01,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:02,519 INFO L124 PetriNetUnfolderBase]: 4649/7619 cut-off events. [2023-11-06 22:14:02,519 INFO L125 PetriNetUnfolderBase]: For 1077/1201 co-relation queries the response was YES. [2023-11-06 22:14:02,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19276 conditions, 7619 events. 4649/7619 cut-off events. For 1077/1201 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 53144 event pairs, 1867 based on Foata normal form. 0/5621 useless extension candidates. Maximal degree in co-relation 19271. Up to 4127 conditions per place. [2023-11-06 22:14:02,571 INFO L140 encePairwiseOnDemand]: 364/368 looper letters, 67 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-06 22:14:02,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 398 flow [2023-11-06 22:14:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-11-06 22:14:02,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148550724637681 [2023-11-06 22:14:02,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-11-06 22:14:02,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-11-06 22:14:02,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:02,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-11-06 22:14:02,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-11-06 22:14:02,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:02,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:02,583 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 156 flow. Second operand 3 states and 458 transitions. [2023-11-06 22:14:02,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 398 flow [2023-11-06 22:14:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:02,586 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 168 flow [2023-11-06 22:14:02,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-06 22:14:02,588 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -47 predicate places. [2023-11-06 22:14:02,588 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 168 flow [2023-11-06 22:14:02,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-11-06 22:14:02,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:02,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:02,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:02,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash 404400492, now seen corresponding path program 1 times [2023-11-06 22:14:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090566874] [2023-11-06 22:14:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:03,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090566874] [2023-11-06 22:14:03,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090566874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223462852] [2023-11-06 22:14:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:03,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:03,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 368 [2023-11-06 22:14:03,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-11-06 22:14:03,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:03,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 368 [2023-11-06 22:14:03,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:04,748 INFO L124 PetriNetUnfolderBase]: 4569/7283 cut-off events. [2023-11-06 22:14:04,748 INFO L125 PetriNetUnfolderBase]: For 1756/1794 co-relation queries the response was YES. [2023-11-06 22:14:04,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20123 conditions, 7283 events. 4569/7283 cut-off events. For 1756/1794 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 47883 event pairs, 1626 based on Foata normal form. 0/5692 useless extension candidates. Maximal degree in co-relation 20117. Up to 5042 conditions per place. [2023-11-06 22:14:04,805 INFO L140 encePairwiseOnDemand]: 365/368 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-06 22:14:04,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 372 flow [2023-11-06 22:14:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-06 22:14:04,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067028985507246 [2023-11-06 22:14:04,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-06 22:14:04,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-06 22:14:04,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:04,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-06 22:14:04,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-11-06 22:14:04,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:04,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:04,828 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 168 flow. Second operand 3 states and 449 transitions. [2023-11-06 22:14:04,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 372 flow [2023-11-06 22:14:04,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:04,834 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 173 flow [2023-11-06 22:14:04,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-06 22:14:04,838 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -46 predicate places. [2023-11-06 22:14:04,839 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 173 flow [2023-11-06 22:14:04,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-11-06 22:14:04,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:04,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:04,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:14:04,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:04,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash 919719088, now seen corresponding path program 1 times [2023-11-06 22:14:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:04,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586766446] [2023-11-06 22:14:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:04,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586766446] [2023-11-06 22:14:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586766446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:05,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854483412] [2023-11-06 22:14:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:05,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:05,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 368 [2023-11-06 22:14:05,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 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) [2023-11-06 22:14:05,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:05,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 368 [2023-11-06 22:14:05,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:06,694 INFO L124 PetriNetUnfolderBase]: 4805/7800 cut-off events. [2023-11-06 22:14:06,694 INFO L125 PetriNetUnfolderBase]: For 1269/1269 co-relation queries the response was YES. [2023-11-06 22:14:06,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21703 conditions, 7800 events. 4805/7800 cut-off events. For 1269/1269 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 52878 event pairs, 1559 based on Foata normal form. 0/6170 useless extension candidates. Maximal degree in co-relation 21696. Up to 2886 conditions per place. [2023-11-06 22:14:06,756 INFO L140 encePairwiseOnDemand]: 357/368 looper letters, 74 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-11-06 22:14:06,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 86 transitions, 481 flow [2023-11-06 22:14:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:14:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 565 transitions. [2023-11-06 22:14:06,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38383152173913043 [2023-11-06 22:14:06,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 565 transitions. [2023-11-06 22:14:06,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 565 transitions. [2023-11-06 22:14:06,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:06,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 565 transitions. [2023-11-06 22:14:06,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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) [2023-11-06 22:14:06,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:06,772 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:06,773 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 173 flow. Second operand 4 states and 565 transitions. [2023-11-06 22:14:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 86 transitions, 481 flow [2023-11-06 22:14:06,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:06,779 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 260 flow [2023-11-06 22:14:06,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2023-11-06 22:14:06,782 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -44 predicate places. [2023-11-06 22:14:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 260 flow [2023-11-06 22:14:06,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 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) [2023-11-06 22:14:06,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:06,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:14:06,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:06,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -348489343, now seen corresponding path program 1 times [2023-11-06 22:14:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762932447] [2023-11-06 22:14:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762932447] [2023-11-06 22:14:07,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762932447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875792908] [2023-11-06 22:14:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:07,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 368 [2023-11-06 22:14:07,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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) [2023-11-06 22:14:07,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:07,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 368 [2023-11-06 22:14:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:08,721 INFO L124 PetriNetUnfolderBase]: 6942/11162 cut-off events. [2023-11-06 22:14:08,721 INFO L125 PetriNetUnfolderBase]: For 7491/7491 co-relation queries the response was YES. [2023-11-06 22:14:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34231 conditions, 11162 events. 6942/11162 cut-off events. For 7491/7491 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 79828 event pairs, 3534 based on Foata normal form. 50/10037 useless extension candidates. Maximal degree in co-relation 34222. Up to 6079 conditions per place. [2023-11-06 22:14:08,798 INFO L140 encePairwiseOnDemand]: 363/368 looper letters, 82 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-06 22:14:08,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 594 flow [2023-11-06 22:14:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:14:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-11-06 22:14:08,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38179347826086957 [2023-11-06 22:14:08,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-11-06 22:14:08,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-11-06 22:14:08,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:08,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-11-06 22:14:08,806 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) [2023-11-06 22:14:08,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:08,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:08,812 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 260 flow. Second operand 4 states and 562 transitions. [2023-11-06 22:14:08,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 594 flow [2023-11-06 22:14:08,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:08,896 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 282 flow [2023-11-06 22:14:08,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-06 22:14:08,899 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -41 predicate places. [2023-11-06 22:14:08,899 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 282 flow [2023-11-06 22:14:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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) [2023-11-06 22:14:08,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:08,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:08,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:14:08,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:08,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash 971055701, now seen corresponding path program 2 times [2023-11-06 22:14:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983830241] [2023-11-06 22:14:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983830241] [2023-11-06 22:14:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983830241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143820492] [2023-11-06 22:14:09,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:09,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:14:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:14:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:14:09,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 368 [2023-11-06 22:14:09,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2023-11-06 22:14:09,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:09,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 368 [2023-11-06 22:14:09,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:10,938 INFO L124 PetriNetUnfolderBase]: 6837/11005 cut-off events. [2023-11-06 22:14:10,938 INFO L125 PetriNetUnfolderBase]: For 9532/9532 co-relation queries the response was YES. [2023-11-06 22:14:10,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34463 conditions, 11005 events. 6837/11005 cut-off events. For 9532/9532 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 78924 event pairs, 2963 based on Foata normal form. 50/9877 useless extension candidates. Maximal degree in co-relation 34453. Up to 7537 conditions per place. [2023-11-06 22:14:10,992 INFO L140 encePairwiseOnDemand]: 365/368 looper letters, 74 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-11-06 22:14:10,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 515 flow [2023-11-06 22:14:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:14:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-11-06 22:14:10,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2023-11-06 22:14:10,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-11-06 22:14:10,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-11-06 22:14:10,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:10,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-11-06 22:14:10,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 22:14:11,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:11,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:11,002 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 282 flow. Second operand 4 states and 560 transitions. [2023-11-06 22:14:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 515 flow [2023-11-06 22:14:11,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 506 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:14:11,071 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 273 flow [2023-11-06 22:14:11,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-06 22:14:11,072 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -42 predicate places. [2023-11-06 22:14:11,072 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 273 flow [2023-11-06 22:14:11,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2023-11-06 22:14:11,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:11,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:11,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:14:11,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:11,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash -348430543, now seen corresponding path program 1 times [2023-11-06 22:14:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399133118] [2023-11-06 22:14:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399133118] [2023-11-06 22:14:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399133118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582916167] [2023-11-06 22:14:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:11,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 368 [2023-11-06 22:14:11,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-06 22:14:11,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:11,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 368 [2023-11-06 22:14:11,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:13,093 INFO L124 PetriNetUnfolderBase]: 6405/10432 cut-off events. [2023-11-06 22:14:13,093 INFO L125 PetriNetUnfolderBase]: For 9744/9897 co-relation queries the response was YES. [2023-11-06 22:14:13,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 10432 events. 6405/10432 cut-off events. For 9744/9897 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 76492 event pairs, 2898 based on Foata normal form. 17/9153 useless extension candidates. Maximal degree in co-relation 32387. Up to 6634 conditions per place. [2023-11-06 22:14:13,156 INFO L140 encePairwiseOnDemand]: 365/368 looper letters, 65 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-06 22:14:13,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 482 flow [2023-11-06 22:14:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-06 22:14:13,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41394927536231885 [2023-11-06 22:14:13,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-06 22:14:13,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-06 22:14:13,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:13,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-06 22:14:13,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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) [2023-11-06 22:14:13,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:13,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2023-11-06 22:14:13,164 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 273 flow. Second operand 3 states and 457 transitions. [2023-11-06 22:14:13,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 482 flow [2023-11-06 22:14:13,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:13,238 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 280 flow [2023-11-06 22:14:13,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-06 22:14:13,239 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -41 predicate places. [2023-11-06 22:14:13,240 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 280 flow [2023-11-06 22:14:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-11-06 22:14:13,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:13,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:14:13,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:13,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2083552744, now seen corresponding path program 1 times [2023-11-06 22:14:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261803988] [2023-11-06 22:14:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:14,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261803988] [2023-11-06 22:14:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261803988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:14,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:14,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:14:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676251322] [2023-11-06 22:14:14,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:14,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:14:14,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 368 [2023-11-06 22:14:14,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 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) [2023-11-06 22:14:14,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:14,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 368 [2023-11-06 22:14:14,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:17,305 INFO L124 PetriNetUnfolderBase]: 11726/18326 cut-off events. [2023-11-06 22:14:17,306 INFO L125 PetriNetUnfolderBase]: For 14454/14454 co-relation queries the response was YES. [2023-11-06 22:14:17,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60938 conditions, 18326 events. 11726/18326 cut-off events. For 14454/14454 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 137376 event pairs, 3588 based on Foata normal form. 80/16282 useless extension candidates. Maximal degree in co-relation 60928. Up to 9533 conditions per place. [2023-11-06 22:14:17,421 INFO L140 encePairwiseOnDemand]: 359/368 looper letters, 103 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2023-11-06 22:14:17,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 119 transitions, 831 flow [2023-11-06 22:14:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:14:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2023-11-06 22:14:17,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416149068322981 [2023-11-06 22:14:17,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2023-11-06 22:14:17,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2023-11-06 22:14:17,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:17,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2023-11-06 22:14:17,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 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) [2023-11-06 22:14:17,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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) [2023-11-06 22:14:17,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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) [2023-11-06 22:14:17,435 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 280 flow. Second operand 7 states and 880 transitions. [2023-11-06 22:14:17,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 119 transitions, 831 flow [2023-11-06 22:14:17,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 119 transitions, 813 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:17,542 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 388 flow [2023-11-06 22:14:17,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-11-06 22:14:17,544 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -33 predicate places. [2023-11-06 22:14:17,544 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 388 flow [2023-11-06 22:14:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 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) [2023-11-06 22:14:17,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:17,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:17,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:14:17,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:17,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash 107790600, now seen corresponding path program 2 times [2023-11-06 22:14:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221151975] [2023-11-06 22:14:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:19,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221151975] [2023-11-06 22:14:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221151975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:19,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:19,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203433414] [2023-11-06 22:14:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:19,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:19,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:19,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:19,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 368 [2023-11-06 22:14:19,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 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) [2023-11-06 22:14:19,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:19,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 368 [2023-11-06 22:14:19,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:21,806 INFO L124 PetriNetUnfolderBase]: 11320/18159 cut-off events. [2023-11-06 22:14:21,806 INFO L125 PetriNetUnfolderBase]: For 15643/15643 co-relation queries the response was YES. [2023-11-06 22:14:21,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60629 conditions, 18159 events. 11320/18159 cut-off events. For 15643/15643 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 141164 event pairs, 4678 based on Foata normal form. 20/16520 useless extension candidates. Maximal degree in co-relation 60615. Up to 11597 conditions per place. [2023-11-06 22:14:21,937 INFO L140 encePairwiseOnDemand]: 358/368 looper letters, 102 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2023-11-06 22:14:21,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 122 transitions, 917 flow [2023-11-06 22:14:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:14:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2023-11-06 22:14:21,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826086956521739 [2023-11-06 22:14:21,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2023-11-06 22:14:21,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2023-11-06 22:14:21,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:21,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2023-11-06 22:14:21,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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) [2023-11-06 22:14:21,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:14:21,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:14:21,948 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 388 flow. Second operand 5 states and 704 transitions. [2023-11-06 22:14:21,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 122 transitions, 917 flow [2023-11-06 22:14:22,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 122 transitions, 914 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:22,092 INFO L231 Difference]: Finished difference. Result has 69 places, 78 transitions, 558 flow [2023-11-06 22:14:22,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=69, PETRI_TRANSITIONS=78} [2023-11-06 22:14:22,093 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2023-11-06 22:14:22,093 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 78 transitions, 558 flow [2023-11-06 22:14:22,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 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) [2023-11-06 22:14:22,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:22,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:22,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:14:22,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:22,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2081765284, now seen corresponding path program 3 times [2023-11-06 22:14:22,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:22,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930817150] [2023-11-06 22:14:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930817150] [2023-11-06 22:14:24,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930817150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:24,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173636113] [2023-11-06 22:14:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:24,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:24,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 368 [2023-11-06 22:14:24,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 78 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 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) [2023-11-06 22:14:24,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:24,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 368 [2023-11-06 22:14:24,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:26,950 INFO L124 PetriNetUnfolderBase]: 12191/19104 cut-off events. [2023-11-06 22:14:26,950 INFO L125 PetriNetUnfolderBase]: For 31515/31515 co-relation queries the response was YES. [2023-11-06 22:14:27,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70079 conditions, 19104 events. 12191/19104 cut-off events. For 31515/31515 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 145714 event pairs, 4855 based on Foata normal form. 10/17321 useless extension candidates. Maximal degree in co-relation 70062. Up to 15775 conditions per place. [2023-11-06 22:14:27,065 INFO L140 encePairwiseOnDemand]: 358/368 looper letters, 86 selfloop transitions, 44 changer transitions 0/133 dead transitions. [2023-11-06 22:14:27,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 133 transitions, 1156 flow [2023-11-06 22:14:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:14:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 696 transitions. [2023-11-06 22:14:27,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782608695652174 [2023-11-06 22:14:27,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 696 transitions. [2023-11-06 22:14:27,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 696 transitions. [2023-11-06 22:14:27,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:27,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 696 transitions. [2023-11-06 22:14:27,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 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) [2023-11-06 22:14:27,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:14:27,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:14:27,075 INFO L175 Difference]: Start difference. First operand has 69 places, 78 transitions, 558 flow. Second operand 5 states and 696 transitions. [2023-11-06 22:14:27,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 133 transitions, 1156 flow [2023-11-06 22:14:27,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 133 transitions, 1148 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:27,236 INFO L231 Difference]: Finished difference. Result has 73 places, 102 transitions, 906 flow [2023-11-06 22:14:27,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=906, PETRI_PLACES=73, PETRI_TRANSITIONS=102} [2023-11-06 22:14:27,237 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-11-06 22:14:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 102 transitions, 906 flow [2023-11-06 22:14:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 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) [2023-11-06 22:14:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:27,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:14:27,239 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:27,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2081827469, now seen corresponding path program 1 times [2023-11-06 22:14:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246917142] [2023-11-06 22:14:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:27,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246917142] [2023-11-06 22:14:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246917142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:27,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011626739] [2023-11-06 22:14:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:27,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:27,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 368 [2023-11-06 22:14:27,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 102 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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) [2023-11-06 22:14:27,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:27,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 368 [2023-11-06 22:14:27,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:29,930 INFO L124 PetriNetUnfolderBase]: 10604/16568 cut-off events. [2023-11-06 22:14:29,931 INFO L125 PetriNetUnfolderBase]: For 36556/36556 co-relation queries the response was YES. [2023-11-06 22:14:29,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67558 conditions, 16568 events. 10604/16568 cut-off events. For 36556/36556 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 121954 event pairs, 3504 based on Foata normal form. 314/15189 useless extension candidates. Maximal degree in co-relation 67539. Up to 7187 conditions per place. [2023-11-06 22:14:30,060 INFO L140 encePairwiseOnDemand]: 351/368 looper letters, 119 selfloop transitions, 29 changer transitions 0/149 dead transitions. [2023-11-06 22:14:30,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 149 transitions, 1662 flow [2023-11-06 22:14:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:14:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-11-06 22:14:30,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37092391304347827 [2023-11-06 22:14:30,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-11-06 22:14:30,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-11-06 22:14:30,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:30,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-11-06 22:14:30,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 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) [2023-11-06 22:14:30,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:30,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 368.0) internal successors, (1840), 5 states have internal predecessors, (1840), 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) [2023-11-06 22:14:30,068 INFO L175 Difference]: Start difference. First operand has 73 places, 102 transitions, 906 flow. Second operand 4 states and 546 transitions. [2023-11-06 22:14:30,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 149 transitions, 1662 flow [2023-11-06 22:14:30,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 149 transitions, 1623 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:30,199 INFO L231 Difference]: Finished difference. Result has 77 places, 123 transitions, 1267 flow [2023-11-06 22:14:30,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1267, PETRI_PLACES=77, PETRI_TRANSITIONS=123} [2023-11-06 22:14:30,200 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2023-11-06 22:14:30,200 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 123 transitions, 1267 flow [2023-11-06 22:14:30,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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) [2023-11-06 22:14:30,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:30,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:14:30,202 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:30,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash 110210069, now seen corresponding path program 1 times [2023-11-06 22:14:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300689861] [2023-11-06 22:14:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300689861] [2023-11-06 22:14:31,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300689861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:31,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:31,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:14:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79453076] [2023-11-06 22:14:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:31,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:14:32,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 368 [2023-11-06 22:14:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 123 transitions, 1267 flow. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 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) [2023-11-06 22:14:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 368 [2023-11-06 22:14:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:36,000 INFO L124 PetriNetUnfolderBase]: 14200/22221 cut-off events. [2023-11-06 22:14:36,000 INFO L125 PetriNetUnfolderBase]: For 62190/62190 co-relation queries the response was YES. [2023-11-06 22:14:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100172 conditions, 22221 events. 14200/22221 cut-off events. For 62190/62190 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 172390 event pairs, 4245 based on Foata normal form. 36/19946 useless extension candidates. Maximal degree in co-relation 100152. Up to 11395 conditions per place. [2023-11-06 22:14:36,176 INFO L140 encePairwiseOnDemand]: 355/368 looper letters, 203 selfloop transitions, 64 changer transitions 0/268 dead transitions. [2023-11-06 22:14:36,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 268 transitions, 3126 flow [2023-11-06 22:14:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:14:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:14:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1137 transitions. [2023-11-06 22:14:36,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432971014492754 [2023-11-06 22:14:36,181 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1137 transitions. [2023-11-06 22:14:36,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1137 transitions. [2023-11-06 22:14:36,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:36,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1137 transitions. [2023-11-06 22:14:36,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 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) [2023-11-06 22:14:36,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 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) [2023-11-06 22:14:36,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 368.0) internal successors, (3680), 10 states have internal predecessors, (3680), 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) [2023-11-06 22:14:36,192 INFO L175 Difference]: Start difference. First operand has 77 places, 123 transitions, 1267 flow. Second operand 9 states and 1137 transitions. [2023-11-06 22:14:36,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 268 transitions, 3126 flow [2023-11-06 22:14:36,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 268 transitions, 3115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:36,661 INFO L231 Difference]: Finished difference. Result has 90 places, 178 transitions, 2239 flow [2023-11-06 22:14:36,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2239, PETRI_PLACES=90, PETRI_TRANSITIONS=178} [2023-11-06 22:14:36,662 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -8 predicate places. [2023-11-06 22:14:36,662 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 178 transitions, 2239 flow [2023-11-06 22:14:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 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) [2023-11-06 22:14:36,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:36,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:14:36,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:36,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -912890763, now seen corresponding path program 2 times [2023-11-06 22:14:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062659134] [2023-11-06 22:14:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062659134] [2023-11-06 22:14:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062659134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:38,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470003390] [2023-11-06 22:14:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:38,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:14:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:14:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:14:38,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 368 [2023-11-06 22:14:38,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 178 transitions, 2239 flow. Second operand has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:38,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:38,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 368 [2023-11-06 22:14:38,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:43,847 INFO L124 PetriNetUnfolderBase]: 15586/24514 cut-off events. [2023-11-06 22:14:43,847 INFO L125 PetriNetUnfolderBase]: For 86034/86034 co-relation queries the response was YES. [2023-11-06 22:14:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118223 conditions, 24514 events. 15586/24514 cut-off events. For 86034/86034 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 196142 event pairs, 2702 based on Foata normal form. 206/22128 useless extension candidates. Maximal degree in co-relation 118196. Up to 11442 conditions per place. [2023-11-06 22:14:44,070 INFO L140 encePairwiseOnDemand]: 352/368 looper letters, 207 selfloop transitions, 139 changer transitions 0/347 dead transitions. [2023-11-06 22:14:44,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 347 transitions, 4659 flow [2023-11-06 22:14:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:14:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:14:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1389 transitions. [2023-11-06 22:14:44,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34313241106719367 [2023-11-06 22:14:44,076 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1389 transitions. [2023-11-06 22:14:44,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1389 transitions. [2023-11-06 22:14:44,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:44,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1389 transitions. [2023-11-06 22:14:44,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.27272727272727) internal successors, (1389), 11 states have internal predecessors, (1389), 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) [2023-11-06 22:14:44,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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) [2023-11-06 22:14:44,089 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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) [2023-11-06 22:14:44,089 INFO L175 Difference]: Start difference. First operand has 90 places, 178 transitions, 2239 flow. Second operand 11 states and 1389 transitions. [2023-11-06 22:14:44,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 347 transitions, 4659 flow [2023-11-06 22:14:46,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 347 transitions, 4599 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-06 22:14:46,050 INFO L231 Difference]: Finished difference. Result has 107 places, 248 transitions, 3717 flow [2023-11-06 22:14:46,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3717, PETRI_PLACES=107, PETRI_TRANSITIONS=248} [2023-11-06 22:14:46,051 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 9 predicate places. [2023-11-06 22:14:46,051 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 248 transitions, 3717 flow [2023-11-06 22:14:46,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:46,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:46,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:46,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:14:46,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:46,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 112142391, now seen corresponding path program 1 times [2023-11-06 22:14:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:46,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623189175] [2023-11-06 22:14:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:46,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623189175] [2023-11-06 22:14:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623189175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:46,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:46,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886193058] [2023-11-06 22:14:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:46,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 368 [2023-11-06 22:14:46,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 248 transitions, 3717 flow. Second operand has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-06 22:14:46,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:46,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 368 [2023-11-06 22:14:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:50,978 INFO L124 PetriNetUnfolderBase]: 11617/19091 cut-off events. [2023-11-06 22:14:50,978 INFO L125 PetriNetUnfolderBase]: For 95025/95025 co-relation queries the response was YES. [2023-11-06 22:14:51,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101940 conditions, 19091 events. 11617/19091 cut-off events. For 95025/95025 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 157305 event pairs, 2757 based on Foata normal form. 470/18450 useless extension candidates. Maximal degree in co-relation 101905. Up to 6553 conditions per place. [2023-11-06 22:14:51,142 INFO L140 encePairwiseOnDemand]: 350/368 looper letters, 253 selfloop transitions, 72 changer transitions 2/328 dead transitions. [2023-11-06 22:14:51,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 328 transitions, 5402 flow [2023-11-06 22:14:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:14:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:14:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 786 transitions. [2023-11-06 22:14:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35597826086956524 [2023-11-06 22:14:51,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 786 transitions. [2023-11-06 22:14:51,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 786 transitions. [2023-11-06 22:14:51,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:51,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 786 transitions. [2023-11-06 22:14:51,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2023-11-06 22:14:51,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 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) [2023-11-06 22:14:51,153 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 368.0) internal successors, (2576), 7 states have internal predecessors, (2576), 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) [2023-11-06 22:14:51,154 INFO L175 Difference]: Start difference. First operand has 107 places, 248 transitions, 3717 flow. Second operand 6 states and 786 transitions. [2023-11-06 22:14:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 328 transitions, 5402 flow [2023-11-06 22:14:52,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 328 transitions, 5329 flow, removed 33 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:52,827 INFO L231 Difference]: Finished difference. Result has 113 places, 265 transitions, 4229 flow [2023-11-06 22:14:52,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4229, PETRI_PLACES=113, PETRI_TRANSITIONS=265} [2023-11-06 22:14:52,828 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 15 predicate places. [2023-11-06 22:14:52,828 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 265 transitions, 4229 flow [2023-11-06 22:14:52,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2023-11-06 22:14:52,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:52,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:14:52,830 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:52,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash 112142478, now seen corresponding path program 1 times [2023-11-06 22:14:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:52,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099179699] [2023-11-06 22:14:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:53,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099179699] [2023-11-06 22:14:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099179699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:53,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:14:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584641596] [2023-11-06 22:14:53,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:53,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:14:53,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 368 [2023-11-06 22:14:53,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 265 transitions, 4229 flow. Second operand has 8 states, 8 states have (on average 118.75) internal successors, (950), 8 states have internal predecessors, (950), 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) [2023-11-06 22:14:53,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:53,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 368 [2023-11-06 22:14:53,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:57,321 INFO L124 PetriNetUnfolderBase]: 7618/12828 cut-off events. [2023-11-06 22:14:57,321 INFO L125 PetriNetUnfolderBase]: For 80843/81073 co-relation queries the response was YES. [2023-11-06 22:14:57,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72555 conditions, 12828 events. 7618/12828 cut-off events. For 80843/81073 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 101515 event pairs, 1507 based on Foata normal form. 45/12623 useless extension candidates. Maximal degree in co-relation 72518. Up to 4601 conditions per place. [2023-11-06 22:14:57,447 INFO L140 encePairwiseOnDemand]: 361/368 looper letters, 161 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2023-11-06 22:14:57,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 300 transitions, 4773 flow [2023-11-06 22:14:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:14:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 879 transitions. [2023-11-06 22:14:57,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34122670807453415 [2023-11-06 22:14:57,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 879 transitions. [2023-11-06 22:14:57,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 879 transitions. [2023-11-06 22:14:57,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:57,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 879 transitions. [2023-11-06 22:14:57,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.57142857142857) internal successors, (879), 7 states have internal predecessors, (879), 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) [2023-11-06 22:14:57,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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) [2023-11-06 22:14:57,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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) [2023-11-06 22:14:57,459 INFO L175 Difference]: Start difference. First operand has 113 places, 265 transitions, 4229 flow. Second operand 7 states and 879 transitions. [2023-11-06 22:14:57,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 300 transitions, 4773 flow [2023-11-06 22:14:58,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 300 transitions, 4708 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-06 22:14:58,688 INFO L231 Difference]: Finished difference. Result has 113 places, 245 transitions, 3809 flow [2023-11-06 22:14:58,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3809, PETRI_PLACES=113, PETRI_TRANSITIONS=245} [2023-11-06 22:14:58,689 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 15 predicate places. [2023-11-06 22:14:58,689 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 245 transitions, 3809 flow [2023-11-06 22:14:58,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.75) internal successors, (950), 8 states have internal predecessors, (950), 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) [2023-11-06 22:14:58,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:58,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:14:58,691 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:14:58,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -826214663, now seen corresponding path program 1 times [2023-11-06 22:14:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:58,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615778613] [2023-11-06 22:14:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615778613] [2023-11-06 22:15:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615778613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:15:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211057833] [2023-11-06 22:15:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:15:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:15:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:15:00,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 368 [2023-11-06 22:15:00,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 245 transitions, 3809 flow. Second operand has 10 states, 10 states have (on average 113.5) internal successors, (1135), 10 states have internal predecessors, (1135), 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) [2023-11-06 22:15:00,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:15:00,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 368 [2023-11-06 22:15:00,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:15:05,832 INFO L124 PetriNetUnfolderBase]: 11501/18777 cut-off events. [2023-11-06 22:15:05,832 INFO L125 PetriNetUnfolderBase]: For 114981/114981 co-relation queries the response was YES. [2023-11-06 22:15:05,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106903 conditions, 18777 events. 11501/18777 cut-off events. For 114981/114981 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 154290 event pairs, 2800 based on Foata normal form. 116/18644 useless extension candidates. Maximal degree in co-relation 106867. Up to 8246 conditions per place. [2023-11-06 22:15:06,008 INFO L140 encePairwiseOnDemand]: 349/368 looper letters, 306 selfloop transitions, 183 changer transitions 57/547 dead transitions. [2023-11-06 22:15:06,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 547 transitions, 9049 flow [2023-11-06 22:15:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:15:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:15:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2461 transitions. [2023-11-06 22:15:06,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2023-11-06 22:15:06,017 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2461 transitions. [2023-11-06 22:15:06,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2461 transitions. [2023-11-06 22:15:06,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:15:06,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2461 transitions. [2023-11-06 22:15:06,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 123.05) internal successors, (2461), 20 states have internal predecessors, (2461), 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) [2023-11-06 22:15:06,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 368.0) internal successors, (7728), 21 states have internal predecessors, (7728), 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) [2023-11-06 22:15:06,038 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 368.0) internal successors, (7728), 21 states have internal predecessors, (7728), 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) [2023-11-06 22:15:06,038 INFO L175 Difference]: Start difference. First operand has 113 places, 245 transitions, 3809 flow. Second operand 20 states and 2461 transitions. [2023-11-06 22:15:06,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 547 transitions, 9049 flow [2023-11-06 22:15:08,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 547 transitions, 8905 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:15:08,097 INFO L231 Difference]: Finished difference. Result has 137 places, 382 transitions, 6790 flow [2023-11-06 22:15:08,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6790, PETRI_PLACES=137, PETRI_TRANSITIONS=382} [2023-11-06 22:15:08,098 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 39 predicate places. [2023-11-06 22:15:08,099 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 382 transitions, 6790 flow [2023-11-06 22:15:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.5) internal successors, (1135), 10 states have internal predecessors, (1135), 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) [2023-11-06 22:15:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:15:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:15:08,100 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 22:15:08,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash 958017203, now seen corresponding path program 2 times [2023-11-06 22:15:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291834712] [2023-11-06 22:15:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291834712] [2023-11-06 22:15:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291834712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:15:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052505872] [2023-11-06 22:15:10,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:10,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:15:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:10,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:15:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:10,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 368 [2023-11-06 22:15:10,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 382 transitions, 6790 flow. Second operand has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 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) [2023-11-06 22:15:10,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:15:10,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 368 [2023-11-06 22:15:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:15:15,294 INFO L124 PetriNetUnfolderBase]: 11185/18521 cut-off events. [2023-11-06 22:15:15,294 INFO L125 PetriNetUnfolderBase]: For 150000/150000 co-relation queries the response was YES. [2023-11-06 22:15:15,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117429 conditions, 18521 events. 11185/18521 cut-off events. For 150000/150000 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 153787 event pairs, 4118 based on Foata normal form. 12/18233 useless extension candidates. Maximal degree in co-relation 117382. Up to 12425 conditions per place. [2023-11-06 22:15:15,497 INFO L140 encePairwiseOnDemand]: 359/368 looper letters, 298 selfloop transitions, 176 changer transitions 2/479 dead transitions. [2023-11-06 22:15:15,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 479 transitions, 9176 flow [2023-11-06 22:15:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:15:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:15:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2023-11-06 22:15:15,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842391304347826 [2023-11-06 22:15:15,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2023-11-06 22:15:15,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2023-11-06 22:15:15,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:15:15,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2023-11-06 22:15:15,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 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) [2023-11-06 22:15:15,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:15:15,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 368.0) internal successors, (2208), 6 states have internal predecessors, (2208), 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) [2023-11-06 22:15:15,505 INFO L175 Difference]: Start difference. First operand has 137 places, 382 transitions, 6790 flow. Second operand 5 states and 707 transitions. [2023-11-06 22:15:15,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 479 transitions, 9176 flow