./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX --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 b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:57:33,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:57:33,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:57:33,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:57:33,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:57:33,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:57:33,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:57:33,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:57:33,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:57:33,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:57:33,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:57:33,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:57:33,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:57:33,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:57:33,505 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:57:33,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:57:33,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:57:33,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:57:33,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:57:33,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:57:33,507 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:57:33,508 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:57:33,508 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:57:33,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:57:33,509 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:57:33,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:57:33,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:57:33,513 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:57:33,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:57:33,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:57:33,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:57:33,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:57:33,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:57:33,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:57:33,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:57:33,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:57:33,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:57:33,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:57:33,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:57:33,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:57:33,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:57:33,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:57:33,520 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_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b [2024-11-08 17:57:33,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:57:33,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:57:33,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:57:33,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:57:33,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:57:33,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i Unable to find full path for "g++" [2024-11-08 17:57:35,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:57:36,200 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:57:36,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i [2024-11-08 17:57:36,231 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/data/6ea6bb4a7/d237704114bc43adb98036c647e3c76f/FLAG3fe3e7758 [2024-11-08 17:57:36,243 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/data/6ea6bb4a7/d237704114bc43adb98036c647e3c76f [2024-11-08 17:57:36,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:57:36,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:57:36,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:57:36,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:57:36,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:57:36,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:57:36" (1/1) ... [2024-11-08 17:57:36,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e62d147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:36, skipping insertion in model container [2024-11-08 17:57:36,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:57:36" (1/1) ... [2024-11-08 17:57:36,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:57:37,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:57:37,121 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:57:37,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:57:37,318 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:57:37,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37 WrapperNode [2024-11-08 17:57:37,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:57:37,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:57:37,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:57:37,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:57:37,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,409 INFO L138 Inliner]: procedures = 372, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 228 [2024-11-08 17:57:37,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:57:37,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:57:37,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:57:37,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:57:37,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,470 INFO L175 MemorySlicer]: Split 90 memory accesses to 3 slices as follows [50, 16, 24]. 56 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [50, 10, 0]. The 19 writes are split as follows [0, 1, 18]. [2024-11-08 17:57:37,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:57:37,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:57:37,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:57:37,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:57:37,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (1/1) ... [2024-11-08 17:57:37,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:57:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:37,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:57:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:57:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:57:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:57:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:57:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:57:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:57:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:57:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:57:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:57:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:57:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:57:37,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:57:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:57:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:57:37,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:57:37,585 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:57:37,768 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:57:37,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:57:38,416 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:57:38,416 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:57:38,917 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:57:38,918 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:57:38,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:57:38 BoogieIcfgContainer [2024-11-08 17:57:38,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:57:38,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:57:38,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:57:38,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:57:38,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:57:36" (1/3) ... [2024-11-08 17:57:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b90eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:57:38, skipping insertion in model container [2024-11-08 17:57:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:57:37" (2/3) ... [2024-11-08 17:57:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b90eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:57:38, skipping insertion in model container [2024-11-08 17:57:38,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:57:38" (3/3) ... [2024-11-08 17:57:38,931 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_13-arraycollapse_nr.i [2024-11-08 17:57:38,950 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:57:38,950 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-11-08 17:57:38,950 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:57:39,056 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:57:39,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 110 transitions, 224 flow [2024-11-08 17:57:39,177 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2024-11-08 17:57:39,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:57:39,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 340 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-08 17:57:39,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 110 transitions, 224 flow [2024-11-08 17:57:39,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 109 transitions, 221 flow [2024-11-08 17:57:39,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:57:39,209 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@6a4cf29b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:57:39,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-11-08 17:57:39,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:57:39,223 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 17:57:39,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:57:39,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:39,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:57:39,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:39,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 20452638, now seen corresponding path program 1 times [2024-11-08 17:57:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103541395] [2024-11-08 17:57:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103541395] [2024-11-08 17:57:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103541395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685369433] [2024-11-08 17:57:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:39,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:39,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 110 [2024-11-08 17:57:39,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:39,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:39,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 110 [2024-11-08 17:57:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:40,023 INFO L124 PetriNetUnfolderBase]: 65/333 cut-off events. [2024-11-08 17:57:40,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:57:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 333 events. 65/333 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1434 event pairs, 63 based on Foata normal form. 1/243 useless extension candidates. Maximal degree in co-relation 376. Up to 163 conditions per place. [2024-11-08 17:57:40,031 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 41 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-08 17:57:40,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 321 flow [2024-11-08 17:57:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-08 17:57:40,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8090909090909091 [2024-11-08 17:57:40,048 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 221 flow. Second operand 3 states and 267 transitions. [2024-11-08 17:57:40,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 321 flow [2024-11-08 17:57:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:40,058 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 234 flow [2024-11-08 17:57:40,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-11-08 17:57:40,067 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2024-11-08 17:57:40,067 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 234 flow [2024-11-08 17:57:40,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:40,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:40,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:57:40,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:57:40,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:40,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 20452872, now seen corresponding path program 1 times [2024-11-08 17:57:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:40,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134096989] [2024-11-08 17:57:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:40,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134096989] [2024-11-08 17:57:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134096989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89750937] [2024-11-08 17:57:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:40,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:40,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 110 [2024-11-08 17:57:40,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:40,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:40,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 110 [2024-11-08 17:57:40,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:40,529 INFO L124 PetriNetUnfolderBase]: 65/321 cut-off events. [2024-11-08 17:57:40,529 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:57:40,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 321 events. 65/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1343 event pairs, 63 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 463. Up to 162 conditions per place. [2024-11-08 17:57:40,533 INFO L140 encePairwiseOnDemand]: 94/110 looper letters, 31 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-11-08 17:57:40,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 296 flow [2024-11-08 17:57:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2024-11-08 17:57:40,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7212121212121212 [2024-11-08 17:57:40,539 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 234 flow. Second operand 3 states and 238 transitions. [2024-11-08 17:57:40,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 296 flow [2024-11-08 17:57:40,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:40,544 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 232 flow [2024-11-08 17:57:40,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2024-11-08 17:57:40,545 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -5 predicate places. [2024-11-08 17:57:40,545 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 232 flow [2024-11-08 17:57:40,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:40,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:40,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:57:40,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:57:40,547 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:40,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 20452873, now seen corresponding path program 1 times [2024-11-08 17:57:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640264895] [2024-11-08 17:57:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640264895] [2024-11-08 17:57:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640264895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:40,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688307322] [2024-11-08 17:57:40,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:40,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:40,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:40,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 110 [2024-11-08 17:57:40,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:40,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:40,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 110 [2024-11-08 17:57:40,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:40,961 INFO L124 PetriNetUnfolderBase]: 65/309 cut-off events. [2024-11-08 17:57:40,961 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-08 17:57:40,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 309 events. 65/309 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1296 event pairs, 63 based on Foata normal form. 12/249 useless extension candidates. Maximal degree in co-relation 422. Up to 162 conditions per place. [2024-11-08 17:57:40,966 INFO L140 encePairwiseOnDemand]: 94/110 looper letters, 27 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2024-11-08 17:57:40,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 286 flow [2024-11-08 17:57:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-11-08 17:57:40,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2024-11-08 17:57:40,970 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 232 flow. Second operand 3 states and 246 transitions. [2024-11-08 17:57:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 286 flow [2024-11-08 17:57:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:40,973 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 216 flow [2024-11-08 17:57:40,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-11-08 17:57:40,974 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -13 predicate places. [2024-11-08 17:57:40,974 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 216 flow [2024-11-08 17:57:40,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:40,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:40,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:57:40,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:57:40,975 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1819605554, now seen corresponding path program 1 times [2024-11-08 17:57:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779263644] [2024-11-08 17:57:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779263644] [2024-11-08 17:57:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779263644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:41,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:41,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093733587] [2024-11-08 17:57:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:41,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:57:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:57:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:57:41,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2024-11-08 17:57:41,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:41,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:41,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2024-11-08 17:57:41,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:41,579 INFO L124 PetriNetUnfolderBase]: 74/327 cut-off events. [2024-11-08 17:57:41,580 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 17:57:41,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 327 events. 74/327 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1412 event pairs, 72 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 465. Up to 192 conditions per place. [2024-11-08 17:57:41,582 INFO L140 encePairwiseOnDemand]: 103/110 looper letters, 39 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2024-11-08 17:57:41,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 284 flow [2024-11-08 17:57:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:57:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2024-11-08 17:57:41,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-11-08 17:57:41,584 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 216 flow. Second operand 3 states and 240 transitions. [2024-11-08 17:57:41,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 284 flow [2024-11-08 17:57:41,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:41,587 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 190 flow [2024-11-08 17:57:41,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2024-11-08 17:57:41,588 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -19 predicate places. [2024-11-08 17:57:41,588 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 190 flow [2024-11-08 17:57:41,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:41,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:41,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:57:41,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:57:41,589 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:41,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1819605553, now seen corresponding path program 1 times [2024-11-08 17:57:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907511460] [2024-11-08 17:57:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907511460] [2024-11-08 17:57:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907511460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:41,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465223807] [2024-11-08 17:57:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:41,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:57:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:57:41,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:42,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 110 [2024-11-08 17:57:42,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:42,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:42,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 110 [2024-11-08 17:57:42,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:42,485 INFO L124 PetriNetUnfolderBase]: 65/295 cut-off events. [2024-11-08 17:57:42,485 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:57:42,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 295 events. 65/295 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 63 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 470. Up to 165 conditions per place. [2024-11-08 17:57:42,487 INFO L140 encePairwiseOnDemand]: 102/110 looper letters, 39 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-08 17:57:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 292 flow [2024-11-08 17:57:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:57:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-11-08 17:57:42,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634090909090909 [2024-11-08 17:57:42,489 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 190 flow. Second operand 4 states and 279 transitions. [2024-11-08 17:57:42,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 292 flow [2024-11-08 17:57:42,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:57:42,492 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 231 flow [2024-11-08 17:57:42,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-08 17:57:42,493 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -15 predicate places. [2024-11-08 17:57:42,493 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 231 flow [2024-11-08 17:57:42,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:42,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:42,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:42,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:57:42,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:42,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 689650415, now seen corresponding path program 1 times [2024-11-08 17:57:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569813905] [2024-11-08 17:57:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569813905] [2024-11-08 17:57:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569813905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:57:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713478888] [2024-11-08 17:57:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:42,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:57:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:57:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:57:43,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 110 [2024-11-08 17:57:43,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:43,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:43,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 110 [2024-11-08 17:57:43,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:43,737 INFO L124 PetriNetUnfolderBase]: 65/289 cut-off events. [2024-11-08 17:57:43,737 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 17:57:43,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 289 events. 65/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 63 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 488. Up to 154 conditions per place. [2024-11-08 17:57:43,740 INFO L140 encePairwiseOnDemand]: 93/110 looper letters, 30 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-11-08 17:57:43,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 88 transitions, 319 flow [2024-11-08 17:57:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:57:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:57:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 487 transitions. [2024-11-08 17:57:43,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553409090909091 [2024-11-08 17:57:43,743 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 231 flow. Second operand 8 states and 487 transitions. [2024-11-08 17:57:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 88 transitions, 319 flow [2024-11-08 17:57:43,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:43,746 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 255 flow [2024-11-08 17:57:43,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2024-11-08 17:57:43,747 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -14 predicate places. [2024-11-08 17:57:43,748 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 255 flow [2024-11-08 17:57:43,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 7 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:43,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:43,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:43,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:57:43,749 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:43,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash 689650416, now seen corresponding path program 1 times [2024-11-08 17:57:43,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:43,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094519611] [2024-11-08 17:57:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:43,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094519611] [2024-11-08 17:57:44,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094519611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:44,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:57:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695153990] [2024-11-08 17:57:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:44,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:57:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:57:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:57:44,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 110 [2024-11-08 17:57:44,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:44,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:44,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 110 [2024-11-08 17:57:44,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:45,235 INFO L124 PetriNetUnfolderBase]: 65/285 cut-off events. [2024-11-08 17:57:45,235 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-08 17:57:45,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 285 events. 65/285 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1176 event pairs, 63 based on Foata normal form. 2/239 useless extension candidates. Maximal degree in co-relation 500. Up to 158 conditions per place. [2024-11-08 17:57:45,238 INFO L140 encePairwiseOnDemand]: 98/110 looper letters, 32 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-11-08 17:57:45,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 345 flow [2024-11-08 17:57:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:57:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:57:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 394 transitions. [2024-11-08 17:57:45,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116883116883116 [2024-11-08 17:57:45,240 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 255 flow. Second operand 7 states and 394 transitions. [2024-11-08 17:57:45,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 345 flow [2024-11-08 17:57:45,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 309 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 17:57:45,243 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 245 flow [2024-11-08 17:57:45,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-11-08 17:57:45,244 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -17 predicate places. [2024-11-08 17:57:45,244 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 245 flow [2024-11-08 17:57:45,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:45,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:45,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:45,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:57:45,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:45,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1329107747, now seen corresponding path program 1 times [2024-11-08 17:57:45,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:45,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998885291] [2024-11-08 17:57:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998885291] [2024-11-08 17:57:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998885291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:45,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125418183] [2024-11-08 17:57:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:45,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:57:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:57:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:45,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 110 [2024-11-08 17:57:45,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:45,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:45,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 110 [2024-11-08 17:57:45,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:45,825 INFO L124 PetriNetUnfolderBase]: 65/283 cut-off events. [2024-11-08 17:57:45,826 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-08 17:57:45,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 283 events. 65/283 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1171 event pairs, 63 based on Foata normal form. 2/236 useless extension candidates. Maximal degree in co-relation 493. Up to 158 conditions per place. [2024-11-08 17:57:45,828 INFO L140 encePairwiseOnDemand]: 99/110 looper letters, 30 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-11-08 17:57:45,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 85 transitions, 333 flow [2024-11-08 17:57:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:57:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2024-11-08 17:57:45,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290909090909091 [2024-11-08 17:57:45,830 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 245 flow. Second operand 5 states and 346 transitions. [2024-11-08 17:57:45,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 85 transitions, 333 flow [2024-11-08 17:57:45,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 303 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:57:45,833 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 243 flow [2024-11-08 17:57:45,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-11-08 17:57:45,834 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -20 predicate places. [2024-11-08 17:57:45,835 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 243 flow [2024-11-08 17:57:45,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:45,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:45,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:45,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:57:45,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:45,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:45,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1329107748, now seen corresponding path program 1 times [2024-11-08 17:57:45,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:45,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694480350] [2024-11-08 17:57:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:46,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694480350] [2024-11-08 17:57:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694480350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:46,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:46,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609901392] [2024-11-08 17:57:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:46,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:57:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:57:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:46,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2024-11-08 17:57:46,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:46,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:46,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2024-11-08 17:57:46,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:46,563 INFO L124 PetriNetUnfolderBase]: 65/281 cut-off events. [2024-11-08 17:57:46,563 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-08 17:57:46,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 281 events. 65/281 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 63 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 485. Up to 158 conditions per place. [2024-11-08 17:57:46,565 INFO L140 encePairwiseOnDemand]: 99/110 looper letters, 26 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-11-08 17:57:46,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 323 flow [2024-11-08 17:57:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:57:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2024-11-08 17:57:46,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581818181818182 [2024-11-08 17:57:46,567 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 243 flow. Second operand 5 states and 362 transitions. [2024-11-08 17:57:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 323 flow [2024-11-08 17:57:46,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 293 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:57:46,570 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 241 flow [2024-11-08 17:57:46,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-11-08 17:57:46,571 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -21 predicate places. [2024-11-08 17:57:46,571 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 241 flow [2024-11-08 17:57:46,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:46,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:46,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:46,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:57:46,572 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:46,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1312307870, now seen corresponding path program 1 times [2024-11-08 17:57:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108116639] [2024-11-08 17:57:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108116639] [2024-11-08 17:57:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108116639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070430910] [2024-11-08 17:57:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:47,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:47,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:47,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:57:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:47,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 17:57:47,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:47,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:47,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:48,011 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:57:48,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:57:48,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:57:48,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:57:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:48,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:48,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:57:48,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:57:48,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:57:48,751 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:57:48,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:57:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070430910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:57:48,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:57:48,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 18 [2024-11-08 17:57:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201821573] [2024-11-08 17:57:48,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:57:48,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:57:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:57:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:57:53,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 110 [2024-11-08 17:57:53,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 241 flow. Second operand has 20 states, 20 states have (on average 55.1) internal successors, (1102), 20 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:53,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:53,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 110 [2024-11-08 17:57:53,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:54,451 INFO L124 PetriNetUnfolderBase]: 78/349 cut-off events. [2024-11-08 17:57:54,451 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-08 17:57:54,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 349 events. 78/349 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1525 event pairs, 72 based on Foata normal form. 9/304 useless extension candidates. Maximal degree in co-relation 650. Up to 184 conditions per place. [2024-11-08 17:57:54,454 INFO L140 encePairwiseOnDemand]: 99/110 looper letters, 71 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-11-08 17:57:54,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 559 flow [2024-11-08 17:57:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:57:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:57:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 623 transitions. [2024-11-08 17:57:54,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5663636363636364 [2024-11-08 17:57:54,458 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 241 flow. Second operand 10 states and 623 transitions. [2024-11-08 17:57:54,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 559 flow [2024-11-08 17:57:54,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 487 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:57:54,463 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 281 flow [2024-11-08 17:57:54,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=281, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-08 17:57:54,464 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -13 predicate places. [2024-11-08 17:57:54,464 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 281 flow [2024-11-08 17:57:54,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 55.1) internal successors, (1102), 20 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:54,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:54,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:54,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:57:54,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:54,666 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:54,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1955844585, now seen corresponding path program 1 times [2024-11-08 17:57:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111733331] [2024-11-08 17:57:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:54,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111733331] [2024-11-08 17:57:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111733331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891440245] [2024-11-08 17:57:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:54,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:54,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:54,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:54,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:57:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:55,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:55,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:55,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:57:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:55,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891440245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:57:55,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:57:55,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 17:57:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380494873] [2024-11-08 17:57:55,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:57:55,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:57:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:57:55,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:57:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:57:55,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 110 [2024-11-08 17:57:55,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 78.22222222222223) internal successors, (704), 9 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:55,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:57:55,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 110 [2024-11-08 17:57:55,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:57:55,696 INFO L124 PetriNetUnfolderBase]: 64/325 cut-off events. [2024-11-08 17:57:55,697 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-08 17:57:55,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 325 events. 64/325 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1125 event pairs, 63 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 594. Up to 155 conditions per place. [2024-11-08 17:57:55,699 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 69 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2024-11-08 17:57:55,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 118 transitions, 523 flow [2024-11-08 17:57:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:57:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:57:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 669 transitions. [2024-11-08 17:57:55,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7602272727272728 [2024-11-08 17:57:55,703 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 281 flow. Second operand 8 states and 669 transitions. [2024-11-08 17:57:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 118 transitions, 523 flow [2024-11-08 17:57:55,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 501 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-08 17:57:55,708 INFO L231 Difference]: Finished difference. Result has 108 places, 88 transitions, 288 flow [2024-11-08 17:57:55,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=108, PETRI_TRANSITIONS=88} [2024-11-08 17:57:55,710 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2024-11-08 17:57:55,710 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 288 flow [2024-11-08 17:57:55,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.22222222222223) internal successors, (704), 9 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:55,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:57:55,711 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-11-08 17:57:55,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:57:55,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:55,912 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:57:55,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash 374528527, now seen corresponding path program 2 times [2024-11-08 17:57:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:57:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866439888] [2024-11-08 17:57:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:57:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:57:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866439888] [2024-11-08 17:57:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866439888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:57:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049214916] [2024-11-08 17:57:58,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:57:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:58,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:58,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:58,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:57:58,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:57:58,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:57:58,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 17:57:58,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:58,782 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:57:58,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:57:58,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:58,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:57:58,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:58,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:59,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,159 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:57:59,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:57:59,176 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:57:59,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:57:59,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:59,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:59,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:59,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,662 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:57:59,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:57:59,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:59,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:57:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:59,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:00,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:58:00,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:58:00,382 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:58:00,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:58:00,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:58:00,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:58:00,871 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:58:00,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:58:01,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:58:01,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:58:01,359 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:58:01,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:58:01,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:58:01,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:58:01,825 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:58:01,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:58:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049214916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:58:01,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:58:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 10] total 39 [2024-11-08 17:58:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099368453] [2024-11-08 17:58:01,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:58:01,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:58:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:58:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:58:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:58:20,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 110 [2024-11-08 17:58:20,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 288 flow. Second operand has 41 states, 41 states have (on average 59.34146341463415) internal successors, (2433), 41 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:58:20,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:58:20,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 110 [2024-11-08 17:58:20,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:58:22,820 INFO L124 PetriNetUnfolderBase]: 77/410 cut-off events. [2024-11-08 17:58:22,820 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-08 17:58:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 410 events. 77/410 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1545 event pairs, 72 based on Foata normal form. 6/362 useless extension candidates. Maximal degree in co-relation 812. Up to 181 conditions per place. [2024-11-08 17:58:22,823 INFO L140 encePairwiseOnDemand]: 102/110 looper letters, 83 selfloop transitions, 28 changer transitions 0/152 dead transitions. [2024-11-08 17:58:22,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 152 transitions, 804 flow [2024-11-08 17:58:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:58:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 17:58:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1143 transitions. [2024-11-08 17:58:22,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5772727272727273 [2024-11-08 17:58:22,829 INFO L175 Difference]: Start difference. First operand has 108 places, 88 transitions, 288 flow. Second operand 18 states and 1143 transitions. [2024-11-08 17:58:22,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 152 transitions, 804 flow [2024-11-08 17:58:22,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 152 transitions, 796 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:58:22,835 INFO L231 Difference]: Finished difference. Result has 132 places, 105 transitions, 493 flow [2024-11-08 17:58:22,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=493, PETRI_PLACES=132, PETRI_TRANSITIONS=105} [2024-11-08 17:58:22,837 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 21 predicate places. [2024-11-08 17:58:22,837 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 105 transitions, 493 flow [2024-11-08 17:58:22,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 59.34146341463415) internal successors, (2433), 41 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:58:22,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:58:22,839 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:22,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:23,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:58:23,040 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:58:23,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1313034839, now seen corresponding path program 2 times [2024-11-08 17:58:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:58:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985597879] [2024-11-08 17:58:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:58:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:23,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:58:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985597879] [2024-11-08 17:58:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985597879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:58:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750198772] [2024-11-08 17:58:23,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:58:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:23,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:23,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:58:24,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:58:24,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:58:24,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:58:24,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:24,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750198772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:58:24,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:58:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-08 17:58:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166971781] [2024-11-08 17:58:24,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:58:24,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:58:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:58:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:58:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:58:24,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 110 [2024-11-08 17:58:24,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 105 transitions, 493 flow. Second operand has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:58:24,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:58:24,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 110 [2024-11-08 17:58:24,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:58:25,131 INFO L124 PetriNetUnfolderBase]: 64/372 cut-off events. [2024-11-08 17:58:25,131 INFO L125 PetriNetUnfolderBase]: For 453/453 co-relation queries the response was YES. [2024-11-08 17:58:25,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 372 events. 64/372 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1132 event pairs, 63 based on Foata normal form. 4/326 useless extension candidates. Maximal degree in co-relation 828. Up to 155 conditions per place. [2024-11-08 17:58:25,135 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 98 selfloop transitions, 12 changer transitions 0/151 dead transitions. [2024-11-08 17:58:25,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 958 flow [2024-11-08 17:58:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:58:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:58:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 989 transitions. [2024-11-08 17:58:25,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7492424242424243 [2024-11-08 17:58:25,139 INFO L175 Difference]: Start difference. First operand has 132 places, 105 transitions, 493 flow. Second operand 12 states and 989 transitions. [2024-11-08 17:58:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 958 flow [2024-11-08 17:58:25,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 151 transitions, 901 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-08 17:58:25,147 INFO L231 Difference]: Finished difference. Result has 140 places, 102 transitions, 469 flow [2024-11-08 17:58:25,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=469, PETRI_PLACES=140, PETRI_TRANSITIONS=102} [2024-11-08 17:58:25,148 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 29 predicate places. [2024-11-08 17:58:25,149 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 102 transitions, 469 flow [2024-11-08 17:58:25,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:58:25,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:58:25,150 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2024-11-08 17:58:25,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:58:25,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:25,355 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 17:58:25,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1373076369, now seen corresponding path program 3 times [2024-11-08 17:58:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:58:25,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824853967] [2024-11-08 17:58:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:25,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:58:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 445 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:58:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824853967] [2024-11-08 17:58:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824853967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:58:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328534877] [2024-11-08 17:58:26,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:58:26,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:26,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:26,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:07:18,547 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 18:07:18,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:18,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:07:18,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:18,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:07:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328534877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:07:18,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:07:18,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2024-11-08 18:07:18,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709284168] [2024-11-08 18:07:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:07:18,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:07:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:07:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:07:18,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 110 [2024-11-08 18:07:18,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 102 transitions, 469 flow. Second operand has 13 states, 13 states have (on average 79.46153846153847) internal successors, (1033), 13 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:18,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:07:18,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 110 [2024-11-08 18:07:18,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:07:19,557 INFO L124 PetriNetUnfolderBase]: 63/366 cut-off events. [2024-11-08 18:07:19,558 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-08 18:07:19,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 366 events. 63/366 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1118 event pairs, 63 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 791. Up to 153 conditions per place. [2024-11-08 18:07:19,561 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 96 selfloop transitions, 12 changer transitions 0/148 dead transitions. [2024-11-08 18:07:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 907 flow [2024-11-08 18:07:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:07:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:07:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1058 transitions. [2024-11-08 18:07:19,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7398601398601399 [2024-11-08 18:07:19,567 INFO L175 Difference]: Start difference. First operand has 140 places, 102 transitions, 469 flow. Second operand 13 states and 1058 transitions. [2024-11-08 18:07:19,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 907 flow [2024-11-08 18:07:19,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 853 flow, removed 6 selfloop flow, removed 21 redundant places. [2024-11-08 18:07:19,576 INFO L231 Difference]: Finished difference. Result has 130 places, 99 transitions, 407 flow [2024-11-08 18:07:19,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=407, PETRI_PLACES=130, PETRI_TRANSITIONS=99} [2024-11-08 18:07:19,578 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 19 predicate places. [2024-11-08 18:07:19,579 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 99 transitions, 407 flow [2024-11-08 18:07:19,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.46153846153847) internal successors, (1033), 13 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:19,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:07:19,580 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:19,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:19,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:19,781 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 18:07:19,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1373301097, now seen corresponding path program 3 times [2024-11-08 18:07:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:19,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345663073] [2024-11-08 18:07:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 372 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:22,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345663073] [2024-11-08 18:07:22,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345663073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899122079] [2024-11-08 18:07:22,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:07:22,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:22,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:22,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:07:22,855 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 18:07:22,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:22,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 18:07:22,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:23,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:23,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 18:07:23,204 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:07:23,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 18:07:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-08 18:07:23,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:07:23,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899122079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:07:23,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:07:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-08 18:07:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294833263] [2024-11-08 18:07:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:07:23,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:07:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:07:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:07:23,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 110 [2024-11-08 18:07:23,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 99 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:23,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:07:23,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 110 [2024-11-08 18:07:23,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:07:24,369 INFO L124 PetriNetUnfolderBase]: 72/393 cut-off events. [2024-11-08 18:07:24,369 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-08 18:07:24,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 393 events. 72/393 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1297 event pairs, 63 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 823. Up to 152 conditions per place. [2024-11-08 18:07:24,373 INFO L140 encePairwiseOnDemand]: 103/110 looper letters, 52 selfloop transitions, 15 changer transitions 3/107 dead transitions. [2024-11-08 18:07:24,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 107 transitions, 565 flow [2024-11-08 18:07:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:07:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:07:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2024-11-08 18:07:24,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.656060606060606 [2024-11-08 18:07:24,376 INFO L175 Difference]: Start difference. First operand has 130 places, 99 transitions, 407 flow. Second operand 6 states and 433 transitions. [2024-11-08 18:07:24,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 107 transitions, 565 flow [2024-11-08 18:07:24,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 107 transitions, 541 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-08 18:07:24,383 INFO L231 Difference]: Finished difference. Result has 122 places, 98 transitions, 428 flow [2024-11-08 18:07:24,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=122, PETRI_TRANSITIONS=98} [2024-11-08 18:07:24,384 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 11 predicate places. [2024-11-08 18:07:24,384 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 98 transitions, 428 flow [2024-11-08 18:07:24,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:24,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:07:24,385 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:24,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:24,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:07:24,586 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-08 18:07:24,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 377339693, now seen corresponding path program 1 times [2024-11-08 18:07:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081379827] [2024-11-08 18:07:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:22,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:22,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081379827] [2024-11-08 18:08:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081379827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424780455] [2024-11-08 18:08:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:22,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:22,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00bca583-df4c-4f95-b0cc-64bb8616f247/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:08:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:28,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 281 conjuncts are in the unsatisfiable core [2024-11-08 18:08:28,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:28,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:08:28,680 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 18:08:28,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-08 18:08:28,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 18:08:28,998 INFO L349 Elim1Store]: treesize reduction 88, result has 30.7 percent of original size [2024-11-08 18:08:28,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 48 [2024-11-08 18:08:29,402 INFO L349 Elim1Store]: treesize reduction 62, result has 38.6 percent of original size [2024-11-08 18:08:29,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 45 [2024-11-08 18:08:29,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:08:29,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 47 [2024-11-08 18:08:29,732 INFO L349 Elim1Store]: treesize reduction 58, result has 52.8 percent of original size [2024-11-08 18:08:29,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 109 [2024-11-08 18:08:31,517 INFO L349 Elim1Store]: treesize reduction 276, result has 25.4 percent of original size [2024-11-08 18:08:31,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 126 treesize of output 177 [2024-11-08 18:08:32,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:08:32,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 248 treesize of output 158 [2024-11-08 18:08:32,727 INFO L349 Elim1Store]: treesize reduction 168, result has 57.0 percent of original size [2024-11-08 18:08:32,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 191 treesize of output 363 [2024-11-08 18:08:53,718 INFO L349 Elim1Store]: treesize reduction 148, result has 35.4 percent of original size [2024-11-08 18:08:53,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 93 [2024-11-08 18:08:54,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:08:54,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 170 treesize of output 107 [2024-11-08 18:08:54,352 INFO L349 Elim1Store]: treesize reduction 84, result has 62.0 percent of original size [2024-11-08 18:08:54,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 111 treesize of output 216 [2024-11-08 18:08:56,349 INFO L349 Elim1Store]: treesize reduction 250, result has 29.0 percent of original size [2024-11-08 18:08:56,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 62 treesize of output 117 [2024-11-08 18:08:56,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:08:56,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 131 [2024-11-08 18:08:57,138 INFO L349 Elim1Store]: treesize reduction 116, result has 67.0 percent of original size [2024-11-08 18:08:57,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 140 treesize of output 329 [2024-11-08 18:09:01,801 INFO L349 Elim1Store]: treesize reduction 372, result has 24.8 percent of original size [2024-11-08 18:09:01,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 73 treesize of output 141 [2024-11-08 18:09:02,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:09:02,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 155 [2024-11-08 18:09:02,659 INFO L349 Elim1Store]: treesize reduction 140, result has 71.7 percent of original size [2024-11-08 18:09:02,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 167 treesize of output 467 [2024-11-08 18:09:14,816 INFO L349 Elim1Store]: treesize reduction 514, result has 21.9 percent of original size [2024-11-08 18:09:14,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 84 treesize of output 165 [2024-11-08 18:09:15,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:09:15,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 251 treesize of output 179 [2024-11-08 18:09:16,002 INFO L349 Elim1Store]: treesize reduction 500, result has 32.4 percent of original size [2024-11-08 18:09:16,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 197 treesize of output 379 [2024-11-08 18:09:35,756 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 784 DAG size of output: 632 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 18:09:35,757 INFO L349 Elim1Store]: treesize reduction 789, result has 68.6 percent of original size [2024-11-08 18:09:35,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 3 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 168 case distinctions, treesize of input 1171 treesize of output 2598