./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:56:06,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:56:06,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:56:06,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:56:06,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:56:06,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:56:06,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:56:06,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:56:06,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:56:06,356 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:56:06,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:56:06,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:56:06,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:56:06,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:56:06,359 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:56:06,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:56:06,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:56:06,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:56:06,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:56:06,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:56:06,362 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:56:06,363 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:56:06,364 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:56:06,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:56:06,365 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:56:06,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:56:06,366 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:56:06,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:56:06,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:56:06,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:56:06,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:56:06,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:56:06,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:06,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:56:06,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:56:06,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:56:06,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:56:06,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:56:06,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:56:06,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:56:06,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:56:06,375 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_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2023-11-24 21:56:06,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:56:06,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:56:06,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:56:06,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:56:06,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:56:06,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-24 21:56:09,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:56:10,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:56:10,096 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-24 21:56:10,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/data/a8e91ea67/36f778f03ebb48948755c534468856e5/FLAGa68aecd49 [2023-11-24 21:56:10,120 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/data/a8e91ea67/36f778f03ebb48948755c534468856e5 [2023-11-24 21:56:10,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:56:10,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:56:10,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:10,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:56:10,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:56:10,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e18dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10, skipping insertion in model container [2023-11-24 21:56:10,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,161 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:10,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:10,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:56:10,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:10,439 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:56:10,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10 WrapperNode [2023-11-24 21:56:10,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:10,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:10,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:56:10,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:56:10,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,495 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 215 [2023-11-24 21:56:10,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:10,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:56:10,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:56:10,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:56:10,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,540 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:56:10,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:56:10,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:56:10,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:56:10,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:56:10,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (1/1) ... [2023-11-24 21:56:10,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:10,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:56:10,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:56:10,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:56:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:56:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:56:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:56:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:56:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:56:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:56:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:56:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:56:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:56:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:56:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:56:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:56:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:56:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:56:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:56:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:56:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:56:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:56:10,678 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:56:10,809 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:56:10,811 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:56:11,301 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:56:11,749 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:56:11,750 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:56:11,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:11 BoogieIcfgContainer [2023-11-24 21:56:11,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:56:11,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:56:11,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:56:11,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:56:11,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:56:10" (1/3) ... [2023-11-24 21:56:11,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eac6c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:11, skipping insertion in model container [2023-11-24 21:56:11,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:10" (2/3) ... [2023-11-24 21:56:11,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eac6c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:11, skipping insertion in model container [2023-11-24 21:56:11,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:11" (3/3) ... [2023-11-24 21:56:11,766 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-11-24 21:56:11,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:56:11,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-24 21:56:11,795 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:56:11,862 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:56:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 103 flow [2023-11-24 21:56:11,954 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-11-24 21:56:11,954 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:56:11,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 21:56:11,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 103 flow [2023-11-24 21:56:11,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 37 transitions, 92 flow [2023-11-24 21:56:11,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:56:11,979 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;@afa3376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:56:11,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-24 21:56:11,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:56:11,983 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:56:11,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:56:11,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:11,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:56:11,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:11,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 22315, now seen corresponding path program 1 times [2023-11-24 21:56:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:12,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112642322] [2023-11-24 21:56:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:12,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:12,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112642322] [2023-11-24 21:56:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112642322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:12,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:12,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046234240] [2023-11-24 21:56:12,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:12,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:12,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:12,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-24 21:56:12,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:12,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:12,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-24 21:56:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:12,713 INFO L124 PetriNetUnfolderBase]: 44/135 cut-off events. [2023-11-24 21:56:12,713 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-24 21:56:12,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 135 events. 44/135 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 393 event pairs, 44 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 196. Up to 90 conditions per place. [2023-11-24 21:56:12,718 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-24 21:56:12,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 116 flow [2023-11-24 21:56:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-24 21:56:12,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:56:12,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-24 21:56:12,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-24 21:56:12,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:12,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-24 21:56:12,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:12,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:12,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:12,749 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 92 flow. Second operand 3 states and 82 transitions. [2023-11-24 21:56:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 116 flow [2023-11-24 21:56:12,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:56:12,757 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 74 flow [2023-11-24 21:56:12,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-24 21:56:12,763 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2023-11-24 21:56:12,764 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 74 flow [2023-11-24 21:56:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:12,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:12,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:56:12,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:56:12,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:12,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash 22316, now seen corresponding path program 1 times [2023-11-24 21:56:12,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929908405] [2023-11-24 21:56:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:12,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929908405] [2023-11-24 21:56:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929908405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101384479] [2023-11-24 21:56:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:13,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:13,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:56:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:13,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:56:13,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:13,194 INFO L124 PetriNetUnfolderBase]: 32/102 cut-off events. [2023-11-24 21:56:13,194 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-24 21:56:13,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 102 events. 32/102 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 32 based on Foata normal form. 9/91 useless extension candidates. Maximal degree in co-relation 176. Up to 69 conditions per place. [2023-11-24 21:56:13,197 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-24 21:56:13,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 98 flow [2023-11-24 21:56:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-24 21:56:13,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-24 21:56:13,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:13,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,214 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 74 flow. Second operand 3 states and 85 transitions. [2023-11-24 21:56:13,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 98 flow [2023-11-24 21:56:13,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:13,219 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 71 flow [2023-11-24 21:56:13,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-24 21:56:13,221 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-11-24 21:56:13,223 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 71 flow [2023-11-24 21:56:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:13,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:56:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:56:13,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:13,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash 665427780, now seen corresponding path program 1 times [2023-11-24 21:56:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612053215] [2023-11-24 21:56:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:13,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612053215] [2023-11-24 21:56:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612053215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:13,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128238603] [2023-11-24 21:56:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:13,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-24 21:56:13,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:13,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-24 21:56:13,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:13,487 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2023-11-24 21:56:13,487 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-24 21:56:13,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 119 events. 37/119 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 314 event pairs, 37 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 204. Up to 80 conditions per place. [2023-11-24 21:56:13,489 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-24 21:56:13,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 99 flow [2023-11-24 21:56:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-24 21:56:13,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-24 21:56:13,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-24 21:56:13,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-24 21:56:13,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:13,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-24 21:56:13,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,495 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 71 flow. Second operand 3 states and 81 transitions. [2023-11-24 21:56:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 99 flow [2023-11-24 21:56:13,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:13,497 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 68 flow [2023-11-24 21:56:13,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-24 21:56:13,499 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -10 predicate places. [2023-11-24 21:56:13,499 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 68 flow [2023-11-24 21:56:13,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:13,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:56:13,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:56:13,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:13,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 665427781, now seen corresponding path program 1 times [2023-11-24 21:56:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:13,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873446630] [2023-11-24 21:56:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:13,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873446630] [2023-11-24 21:56:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873446630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:13,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113356034] [2023-11-24 21:56:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:13,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:56:13,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:13,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:56:13,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:13,742 INFO L124 PetriNetUnfolderBase]: 32/108 cut-off events. [2023-11-24 21:56:13,743 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-24 21:56:13,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 108 events. 32/108 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 282 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 182. Up to 69 conditions per place. [2023-11-24 21:56:13,745 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-24 21:56:13,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2023-11-24 21:56:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-24 21:56:13,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-24 21:56:13,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:13,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,756 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 68 flow. Second operand 3 states and 85 transitions. [2023-11-24 21:56:13,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2023-11-24 21:56:13,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:13,758 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 65 flow [2023-11-24 21:56:13,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-24 21:56:13,761 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2023-11-24 21:56:13,762 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 65 flow [2023-11-24 21:56:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:13,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:13,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:56:13,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:13,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:13,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405061, now seen corresponding path program 1 times [2023-11-24 21:56:13,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:13,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894893745] [2023-11-24 21:56:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:13,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894893745] [2023-11-24 21:56:13,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894893745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:13,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902360521] [2023-11-24 21:56:13,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:13,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:13,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:56:13,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:13,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:56:13,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:13,963 INFO L124 PetriNetUnfolderBase]: 32/102 cut-off events. [2023-11-24 21:56:13,964 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-24 21:56:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 102 events. 32/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 250 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 176. Up to 69 conditions per place. [2023-11-24 21:56:13,965 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-11-24 21:56:13,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 89 flow [2023-11-24 21:56:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-24 21:56:13,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-24 21:56:13,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-24 21:56:13,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,970 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 65 flow. Second operand 3 states and 85 transitions. [2023-11-24 21:56:13,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 89 flow [2023-11-24 21:56:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:13,972 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 62 flow [2023-11-24 21:56:13,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-24 21:56:13,973 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-11-24 21:56:13,973 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 62 flow [2023-11-24 21:56:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:13,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:13,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:56:13,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:13,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405062, now seen corresponding path program 1 times [2023-11-24 21:56:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:13,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591670989] [2023-11-24 21:56:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:13,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:14,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:14,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591670989] [2023-11-24 21:56:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591670989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:14,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:14,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:56:14,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780005296] [2023-11-24 21:56:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:14,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:56:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:56:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:56:14,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-24 21:56:14,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:14,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-24 21:56:14,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:14,127 INFO L124 PetriNetUnfolderBase]: 37/101 cut-off events. [2023-11-24 21:56:14,127 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:56:14,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 101 events. 37/101 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 218 event pairs, 37 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 186. Up to 80 conditions per place. [2023-11-24 21:56:14,129 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-24 21:56:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 90 flow [2023-11-24 21:56:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:56:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:56:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-24 21:56:14,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-24 21:56:14,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-24 21:56:14,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-24 21:56:14,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:14,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-24 21:56:14,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,133 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 62 flow. Second operand 3 states and 81 transitions. [2023-11-24 21:56:14,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 90 flow [2023-11-24 21:56:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:14,134 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 59 flow [2023-11-24 21:56:14,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-24 21:56:14,136 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2023-11-24 21:56:14,136 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 59 flow [2023-11-24 21:56:14,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:14,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:14,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:56:14,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:14,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -108838514, now seen corresponding path program 1 times [2023-11-24 21:56:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904289540] [2023-11-24 21:56:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:14,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904289540] [2023-11-24 21:56:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904289540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:14,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742687376] [2023-11-24 21:56:14,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:14,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:14,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:14,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:14,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:14,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:14,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:14,992 INFO L124 PetriNetUnfolderBase]: 33/118 cut-off events. [2023-11-24 21:56:14,992 INFO L125 PetriNetUnfolderBase]: For 15/17 co-relation queries the response was YES. [2023-11-24 21:56:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 118 events. 33/118 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 365 event pairs, 6 based on Foata normal form. 3/121 useless extension candidates. Maximal degree in co-relation 211. Up to 39 conditions per place. [2023-11-24 21:56:14,994 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 26 selfloop transitions, 6 changer transitions 7/48 dead transitions. [2023-11-24 21:56:14,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 197 flow [2023-11-24 21:56:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:56:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:56:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2023-11-24 21:56:14,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2023-11-24 21:56:14,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2023-11-24 21:56:14,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2023-11-24 21:56:14,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:14,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2023-11-24 21:56:14,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:14,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,001 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,001 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 59 flow. Second operand 6 states and 190 transitions. [2023-11-24 21:56:15,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 197 flow [2023-11-24 21:56:15,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:15,003 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 91 flow [2023-11-24 21:56:15,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-11-24 21:56:15,005 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-24 21:56:15,005 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 91 flow [2023-11-24 21:56:15,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:15,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:15,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:56:15,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:15,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash 315741656, now seen corresponding path program 2 times [2023-11-24 21:56:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549482317] [2023-11-24 21:56:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:15,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549482317] [2023-11-24 21:56:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549482317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:15,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:15,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926374547] [2023-11-24 21:56:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:15,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:15,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:15,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:15,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:15,952 INFO L124 PetriNetUnfolderBase]: 30/129 cut-off events. [2023-11-24 21:56:15,953 INFO L125 PetriNetUnfolderBase]: For 75/78 co-relation queries the response was YES. [2023-11-24 21:56:15,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 129 events. 30/129 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 6 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 294. Up to 50 conditions per place. [2023-11-24 21:56:15,957 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 24 selfloop transitions, 5 changer transitions 8/46 dead transitions. [2023-11-24 21:56:15,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 221 flow [2023-11-24 21:56:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:56:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:56:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2023-11-24 21:56:15,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2023-11-24 21:56:15,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2023-11-24 21:56:15,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2023-11-24 21:56:15,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:15,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2023-11-24 21:56:15,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,964 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 91 flow. Second operand 6 states and 188 transitions. [2023-11-24 21:56:15,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 221 flow [2023-11-24 21:56:15,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 217 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-24 21:56:15,969 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 109 flow [2023-11-24 21:56:15,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2023-11-24 21:56:15,973 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-11-24 21:56:15,973 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 109 flow [2023-11-24 21:56:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:15,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:15,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:56:15,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:15,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2113963968, now seen corresponding path program 3 times [2023-11-24 21:56:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738351933] [2023-11-24 21:56:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:16,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738351933] [2023-11-24 21:56:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738351933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:16,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:16,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899679386] [2023-11-24 21:56:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:16,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:16,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:16,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:16,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:16,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:16,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:16,733 INFO L124 PetriNetUnfolderBase]: 17/82 cut-off events. [2023-11-24 21:56:16,733 INFO L125 PetriNetUnfolderBase]: For 99/102 co-relation queries the response was YES. [2023-11-24 21:56:16,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 82 events. 17/82 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 2 based on Foata normal form. 3/85 useless extension candidates. Maximal degree in co-relation 211. Up to 20 conditions per place. [2023-11-24 21:56:16,735 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 20 selfloop transitions, 6 changer transitions 6/41 dead transitions. [2023-11-24 21:56:16,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 216 flow [2023-11-24 21:56:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:56:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:56:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2023-11-24 21:56:16,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7658536585365854 [2023-11-24 21:56:16,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2023-11-24 21:56:16,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2023-11-24 21:56:16,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:16,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2023-11-24 21:56:16,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:16,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:16,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:16,740 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 109 flow. Second operand 5 states and 157 transitions. [2023-11-24 21:56:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 216 flow [2023-11-24 21:56:16,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 194 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-24 21:56:16,744 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 109 flow [2023-11-24 21:56:16,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-11-24 21:56:16,745 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-24 21:56:16,745 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 109 flow [2023-11-24 21:56:16,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:16,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:56:16,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:16,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1855971568, now seen corresponding path program 4 times [2023-11-24 21:56:16,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:16,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761773897] [2023-11-24 21:56:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:16,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:17,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761773897] [2023-11-24 21:56:17,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761773897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:17,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:17,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:17,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638210545] [2023-11-24 21:56:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:17,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:17,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:17,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:17,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:17,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:17,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:17,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:17,394 INFO L124 PetriNetUnfolderBase]: 14/83 cut-off events. [2023-11-24 21:56:17,394 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-24 21:56:17,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 83 events. 14/83 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 232 event pairs, 2 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 213. Up to 34 conditions per place. [2023-11-24 21:56:17,395 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 14 selfloop transitions, 5 changer transitions 7/35 dead transitions. [2023-11-24 21:56:17,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 187 flow [2023-11-24 21:56:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:56:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:56:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2023-11-24 21:56:17,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2023-11-24 21:56:17,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 150 transitions. [2023-11-24 21:56:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 150 transitions. [2023-11-24 21:56:17,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:17,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 150 transitions. [2023-11-24 21:56:17,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,400 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 109 flow. Second operand 5 states and 150 transitions. [2023-11-24 21:56:17,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 187 flow [2023-11-24 21:56:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 176 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-24 21:56:17,402 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 107 flow [2023-11-24 21:56:17,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2023-11-24 21:56:17,403 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-24 21:56:17,404 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 107 flow [2023-11-24 21:56:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:17,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:56:17,405 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:17,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1279826510, now seen corresponding path program 5 times [2023-11-24 21:56:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548060173] [2023-11-24 21:56:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548060173] [2023-11-24 21:56:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548060173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852721010] [2023-11-24 21:56:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:17,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:17,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:17,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:17,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:17,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:17,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:18,094 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2023-11-24 21:56:18,094 INFO L125 PetriNetUnfolderBase]: For 27/28 co-relation queries the response was YES. [2023-11-24 21:56:18,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 44 events. 6/44 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 119. Up to 11 conditions per place. [2023-11-24 21:56:18,095 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 14 selfloop transitions, 3 changer transitions 6/32 dead transitions. [2023-11-24 21:56:18,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 171 flow [2023-11-24 21:56:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:56:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:56:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2023-11-24 21:56:18,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032520325203252 [2023-11-24 21:56:18,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2023-11-24 21:56:18,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2023-11-24 21:56:18,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:18,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2023-11-24 21:56:18,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,100 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,100 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 107 flow. Second operand 6 states and 173 transitions. [2023-11-24 21:56:18,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 171 flow [2023-11-24 21:56:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 145 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-24 21:56:18,102 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 79 flow [2023-11-24 21:56:18,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2023-11-24 21:56:18,103 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-24 21:56:18,104 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 79 flow [2023-11-24 21:56:18,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:56:18,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:18,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:56:18,105 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:56:18,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash 341189050, now seen corresponding path program 6 times [2023-11-24 21:56:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485141056] [2023-11-24 21:56:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:18,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485141056] [2023-11-24 21:56:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485141056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:18,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728759674] [2023-11-24 21:56:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:18,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-24 21:56:18,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:56:18,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-24 21:56:18,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:56:18,684 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2023-11-24 21:56:18,684 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2023-11-24 21:56:18,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 29 events. 4/29 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2023-11-24 21:56:18,685 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-24 21:56:18,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 25 transitions, 116 flow [2023-11-24 21:56:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:56:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:56:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2023-11-24 21:56:18,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2023-11-24 21:56:18,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 168 transitions. [2023-11-24 21:56:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 168 transitions. [2023-11-24 21:56:18,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:56:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 168 transitions. [2023-11-24 21:56:18,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,690 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 79 flow. Second operand 6 states and 168 transitions. [2023-11-24 21:56:18,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 25 transitions, 116 flow [2023-11-24 21:56:18,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-24 21:56:18,692 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-11-24 21:56:18,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-11-24 21:56:18,692 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-24 21:56:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-11-24 21:56:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:56:18,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-24 21:56:18,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-24 21:56:18,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-24 21:56:18,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-24 21:56:18,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-24 21:56:18,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-24 21:56:18,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-24 21:56:18,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-24 21:56:18,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-24 21:56:18,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-24 21:56:18,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-24 21:56:18,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-24 21:56:18,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-24 21:56:18,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-24 21:56:18,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-24 21:56:18,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-24 21:56:18,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-24 21:56:18,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:56:18,700 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:18,704 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:56:18,704 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:56:18,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:56:18 BasicIcfg [2023-11-24 21:56:18,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:56:18,712 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:56:18,712 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:56:18,712 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:56:18,713 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:11" (3/4) ... [2023-11-24 21:56:18,715 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:56:18,718 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-24 21:56:18,719 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-24 21:56:18,719 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-24 21:56:18,727 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 95 nodes and edges [2023-11-24 21:56:18,728 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-24 21:56:18,728 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:56:18,729 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:56:18,826 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:56:18,826 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:56:18,826 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:56:18,827 INFO L158 Benchmark]: Toolchain (without parser) took 8703.07ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 82.6MB in the beginning and 73.2MB in the end (delta: 9.3MB). Peak memory consumption was 110.0MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,828 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:56:18,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.24ms. Allocated memory is still 125.8MB. Free memory was 82.6MB in the beginning and 70.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.41ms. Allocated memory is still 125.8MB. Free memory was 70.3MB in the beginning and 67.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,829 INFO L158 Benchmark]: Boogie Preprocessor took 90.57ms. Allocated memory is still 125.8MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,829 INFO L158 Benchmark]: RCFGBuilder took 1163.26ms. Allocated memory is still 125.8MB. Free memory was 64.9MB in the beginning and 77.0MB in the end (delta: -12.2MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,830 INFO L158 Benchmark]: TraceAbstraction took 6956.60ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 76.5MB in the beginning and 78.5MB in the end (delta: -2.0MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,830 INFO L158 Benchmark]: Witness Printer took 114.42ms. Allocated memory is still 224.4MB. Free memory was 78.5MB in the beginning and 73.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:56:18,832 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.24ms. Allocated memory is still 125.8MB. Free memory was 82.6MB in the beginning and 70.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.41ms. Allocated memory is still 125.8MB. Free memory was 70.3MB in the beginning and 67.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.57ms. Allocated memory is still 125.8MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1163.26ms. Allocated memory is still 125.8MB. Free memory was 64.9MB in the beginning and 77.0MB in the end (delta: -12.2MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6956.60ms. Allocated memory was 125.8MB in the beginning and 224.4MB in the end (delta: 98.6MB). Free memory was 76.5MB in the beginning and 78.5MB in the end (delta: -2.0MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 114.42ms. Allocated memory is still 224.4MB. Free memory was 78.5MB in the beginning and 73.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 51 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 455 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 298 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 550 IncrementalHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 44 mSDtfsCounter, 550 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:56:18,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c3ce0-46ef-4a13-9221-82c60134c474/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE