./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:21:17,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:21:17,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-28 20:21:17,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:21:17,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:21:17,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:21:17,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:21:17,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:21:17,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:21:17,539 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:21:17,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:21:17,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:21:17,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:21:17,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:21:17,542 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:21:17,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:21:17,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:21:17,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:21:17,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:21:17,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:21:17,545 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-28 20:21:17,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-28 20:21:17,546 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-28 20:21:17,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:21:17,547 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 20:21:17,547 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:21:17,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:21:17,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:21:17,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:21:17,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:21:17,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:21:17,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:21:17,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:21:17,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:21:17,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:21:17,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:21:17,552 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_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-28 20:21:17,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:21:17,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:21:17,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:21:17,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:21:17,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:21:17,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue.i [2023-11-28 20:21:20,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:21:20,807 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:21:20,807 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/sv-benchmarks/c/pthread/queue.i [2023-11-28 20:21:20,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/70d45e8db/6c834e537152438d9d5e421b2ec54af7/FLAG51b055d61 [2023-11-28 20:21:20,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/70d45e8db/6c834e537152438d9d5e421b2ec54af7 [2023-11-28 20:21:20,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:21:20,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:21:20,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:20,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:21:20,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:21:20,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:20" (1/1) ... [2023-11-28 20:21:20,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@966eb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:20, skipping insertion in model container [2023-11-28 20:21:20,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:21:20" (1/1) ... [2023-11-28 20:21:20,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:21:21,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:21,310 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:21:21,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:21:21,421 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:21:21,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21 WrapperNode [2023-11-28 20:21:21,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:21:21,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:21,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:21:21,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:21:21,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,480 INFO L138 Inliner]: procedures = 275, calls = 74, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-28 20:21:21,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:21:21,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:21:21,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:21:21,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:21:21,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,522 INFO L175 MemorySlicer]: Split 55 memory accesses to 7 slices as follows [2, 8, 5, 4, 2, 2, 32]. 58 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 0, 3, 1, 1, 15]. [2023-11-28 20:21:21,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:21:21,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:21:21,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:21:21,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:21:21,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (1/1) ... [2023-11-28 20:21:21,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:21:21,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:21,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:21:21,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:21:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-28 20:21:21,627 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-28 20:21:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-28 20:21:21,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-28 20:21:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:21:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:21:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:21:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:21:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:21:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-28 20:21:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:21:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:21:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:21:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:21:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:21:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:21:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:21:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 20:21:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 20:21:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:21:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:21:21,634 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:21:21,804 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:21:21,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:21:22,308 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:21:22,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:21:22,532 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 20:21:22,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:22 BoogieIcfgContainer [2023-11-28 20:21:22,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:21:22,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:21:22,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:21:22,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:21:22,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:21:20" (1/3) ... [2023-11-28 20:21:22,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc68784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:22, skipping insertion in model container [2023-11-28 20:21:22,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:21:21" (2/3) ... [2023-11-28 20:21:22,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc68784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:21:22, skipping insertion in model container [2023-11-28 20:21:22,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:22" (3/3) ... [2023-11-28 20:21:22,541 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-28 20:21:22,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:21:22,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-28 20:21:22,561 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:21:22,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:21:22,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 384 flow [2023-11-28 20:21:22,784 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-28 20:21:22,784 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 20:21:22,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 14/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 593 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-11-28 20:21:22,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 185 transitions, 384 flow [2023-11-28 20:21:22,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 376 flow [2023-11-28 20:21:22,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:21:22,817 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1df8cc4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:21:22,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations. [2023-11-28 20:21:22,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:21:22,820 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-28 20:21:22,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:21:22,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:22,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:21:22,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 23284, now seen corresponding path program 1 times [2023-11-28 20:21:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065676285] [2023-11-28 20:21:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065676285] [2023-11-28 20:21:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065676285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:23,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914804972] [2023-11-28 20:21:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:23,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:23,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:21:23,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:23,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:23,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:21:23,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:23,990 INFO L124 PetriNetUnfolderBase]: 1798/4881 cut-off events. [2023-11-28 20:21:23,990 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-28 20:21:24,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7819 conditions, 4881 events. 1798/4881 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39340 event pairs, 1437 based on Foata normal form. 184/3737 useless extension candidates. Maximal degree in co-relation 7629. Up to 2854 conditions per place. [2023-11-28 20:21:24,029 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 61 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-28 20:21:24,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 470 flow [2023-11-28 20:21:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-28 20:21:24,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2023-11-28 20:21:24,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-28 20:21:24,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-28 20:21:24,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:24,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-28 20:21:24,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 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) [2023-11-28 20:21:24,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:24,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:24,059 INFO L175 Difference]: Start difference. First operand has 175 places, 182 transitions, 376 flow. Second operand 3 states and 395 transitions. [2023-11-28 20:21:24,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 470 flow [2023-11-28 20:21:24,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 462 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:21:24,068 INFO L231 Difference]: Finished difference. Result has 163 places, 166 transitions, 340 flow [2023-11-28 20:21:24,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=163, PETRI_TRANSITIONS=166} [2023-11-28 20:21:24,072 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -12 predicate places. [2023-11-28 20:21:24,073 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 166 transitions, 340 flow [2023-11-28 20:21:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:24,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:24,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:21:24,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:21:24,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:24,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:24,075 INFO L85 PathProgramCache]: Analyzing trace with hash 23285, now seen corresponding path program 1 times [2023-11-28 20:21:24,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602185500] [2023-11-28 20:21:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602185500] [2023-11-28 20:21:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602185500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615049235] [2023-11-28 20:21:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:24,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:21:24,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 166 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:24,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:24,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:21:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:24,961 INFO L124 PetriNetUnfolderBase]: 1798/4878 cut-off events. [2023-11-28 20:21:24,961 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-28 20:21:24,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7767 conditions, 4878 events. 1798/4878 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39330 event pairs, 1437 based on Foata normal form. 3/3553 useless extension candidates. Maximal degree in co-relation 7756. Up to 2854 conditions per place. [2023-11-28 20:21:25,007 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-28 20:21:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 163 transitions, 456 flow [2023-11-28 20:21:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-28 20:21:25,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-28 20:21:25,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-28 20:21:25,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-28 20:21:25,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:25,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-28 20:21:25,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 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) [2023-11-28 20:21:25,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,017 INFO L175 Difference]: Start difference. First operand has 163 places, 166 transitions, 340 flow. Second operand 3 states and 394 transitions. [2023-11-28 20:21:25,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 163 transitions, 456 flow [2023-11-28 20:21:25,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:25,023 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 334 flow [2023-11-28 20:21:25,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2023-11-28 20:21:25,024 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -15 predicate places. [2023-11-28 20:21:25,025 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 334 flow [2023-11-28 20:21:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:25,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:21:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:21:25,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:25,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash 694365051, now seen corresponding path program 1 times [2023-11-28 20:21:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:25,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002589066] [2023-11-28 20:21:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002589066] [2023-11-28 20:21:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002589066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524320766] [2023-11-28 20:21:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:25,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:25,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:21:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:25,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:25,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:21:25,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:26,157 INFO L124 PetriNetUnfolderBase]: 1798/4876 cut-off events. [2023-11-28 20:21:26,157 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:21:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 4876 events. 1798/4876 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39329 event pairs, 1437 based on Foata normal form. 0/3551 useless extension candidates. Maximal degree in co-relation 7755. Up to 2853 conditions per place. [2023-11-28 20:21:26,202 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 61 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2023-11-28 20:21:26,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 161 transitions, 458 flow [2023-11-28 20:21:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:21:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:21:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2023-11-28 20:21:26,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6567567567567567 [2023-11-28 20:21:26,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2023-11-28 20:21:26,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2023-11-28 20:21:26,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:26,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2023-11-28 20:21:26,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:26,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:26,211 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:26,211 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 334 flow. Second operand 4 states and 486 transitions. [2023-11-28 20:21:26,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 161 transitions, 458 flow [2023-11-28 20:21:26,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 161 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:26,216 INFO L231 Difference]: Finished difference. Result has 159 places, 161 transitions, 332 flow [2023-11-28 20:21:26,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=159, PETRI_TRANSITIONS=161} [2023-11-28 20:21:26,217 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -16 predicate places. [2023-11-28 20:21:26,217 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 161 transitions, 332 flow [2023-11-28 20:21:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:26,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:26,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:21:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:21:26,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:26,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash 694365052, now seen corresponding path program 1 times [2023-11-28 20:21:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:26,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790726835] [2023-11-28 20:21:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:26,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:26,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790726835] [2023-11-28 20:21:26,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790726835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052959578] [2023-11-28 20:21:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:21:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:21:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:21:26,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:21:26,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:26,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:26,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:21:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:27,258 INFO L124 PetriNetUnfolderBase]: 1798/4874 cut-off events. [2023-11-28 20:21:27,258 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-28 20:21:27,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7764 conditions, 4874 events. 1798/4874 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 39351 event pairs, 1437 based on Foata normal form. 2/3551 useless extension candidates. Maximal degree in co-relation 7749. Up to 2853 conditions per place. [2023-11-28 20:21:27,298 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 58 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2023-11-28 20:21:27,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 450 flow [2023-11-28 20:21:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:21:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:21:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 507 transitions. [2023-11-28 20:21:27,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851351351351351 [2023-11-28 20:21:27,301 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 507 transitions. [2023-11-28 20:21:27,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 507 transitions. [2023-11-28 20:21:27,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:27,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 507 transitions. [2023-11-28 20:21:27,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,308 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,308 INFO L175 Difference]: Start difference. First operand has 159 places, 161 transitions, 332 flow. Second operand 4 states and 507 transitions. [2023-11-28 20:21:27,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 450 flow [2023-11-28 20:21:27,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:21:27,313 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 328 flow [2023-11-28 20:21:27,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2023-11-28 20:21:27,314 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -18 predicate places. [2023-11-28 20:21:27,314 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 328 flow [2023-11-28 20:21:27,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:27,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:21:27,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:27,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1267377867, now seen corresponding path program 1 times [2023-11-28 20:21:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217765899] [2023-11-28 20:21:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217765899] [2023-11-28 20:21:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217765899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:27,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707038115] [2023-11-28 20:21:27,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:27,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:27,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:27,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:27,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:21:27,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:27,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:27,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:21:27,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:28,079 INFO L124 PetriNetUnfolderBase]: 1798/4843 cut-off events. [2023-11-28 20:21:28,080 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-28 20:21:28,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7733 conditions, 4843 events. 1798/4843 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 38903 event pairs, 1437 based on Foata normal form. 491/4040 useless extension candidates. Maximal degree in co-relation 7718. Up to 2853 conditions per place. [2023-11-28 20:21:28,110 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-11-28 20:21:28,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 157 transitions, 446 flow [2023-11-28 20:21:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-28 20:21:28,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135135135135136 [2023-11-28 20:21:28,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-28 20:21:28,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-28 20:21:28,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:28,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-28 20:21:28,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:28,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:28,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:28,118 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 328 flow. Second operand 3 states and 396 transitions. [2023-11-28 20:21:28,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 157 transitions, 446 flow [2023-11-28 20:21:28,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 157 transitions, 440 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:21:28,123 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 322 flow [2023-11-28 20:21:28,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2023-11-28 20:21:28,124 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -21 predicate places. [2023-11-28 20:21:28,124 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 322 flow [2023-11-28 20:21:28,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:28,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:28,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:21:28,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:28,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1267377866, now seen corresponding path program 1 times [2023-11-28 20:21:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:28,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765722901] [2023-11-28 20:21:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:28,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765722901] [2023-11-28 20:21:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765722901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:28,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748096458] [2023-11-28 20:21:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:28,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-28 20:21:28,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:28,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:28,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-28 20:21:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:29,095 INFO L124 PetriNetUnfolderBase]: 2904/7222 cut-off events. [2023-11-28 20:21:29,096 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:21:29,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11708 conditions, 7222 events. 2904/7222 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60453 event pairs, 2369 based on Foata normal form. 0/5398 useless extension candidates. Maximal degree in co-relation 11698. Up to 4450 conditions per place. [2023-11-28 20:21:29,169 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 61 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2023-11-28 20:21:29,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 155 transitions, 444 flow [2023-11-28 20:21:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-28 20:21:29,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-28 20:21:29,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-28 20:21:29,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-28 20:21:29,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:29,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-28 20:21:29,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,177 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 322 flow. Second operand 3 states and 392 transitions. [2023-11-28 20:21:29,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 155 transitions, 444 flow [2023-11-28 20:21:29,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 155 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:29,180 INFO L231 Difference]: Finished difference. Result has 152 places, 155 transitions, 318 flow [2023-11-28 20:21:29,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=152, PETRI_TRANSITIONS=155} [2023-11-28 20:21:29,182 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -23 predicate places. [2023-11-28 20:21:29,182 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 155 transitions, 318 flow [2023-11-28 20:21:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:29,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:21:29,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:29,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash -602545457, now seen corresponding path program 1 times [2023-11-28 20:21:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614159103] [2023-11-28 20:21:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614159103] [2023-11-28 20:21:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614159103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:29,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:29,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108084818] [2023-11-28 20:21:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:29,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:29,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:21:29,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 155 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:29,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:21:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:29,900 INFO L124 PetriNetUnfolderBase]: 1798/4794 cut-off events. [2023-11-28 20:21:29,900 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:21:29,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 4794 events. 1798/4794 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 38298 event pairs, 1437 based on Foata normal form. 45/3594 useless extension candidates. Maximal degree in co-relation 7673. Up to 2853 conditions per place. [2023-11-28 20:21:29,919 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2023-11-28 20:21:29,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 436 flow [2023-11-28 20:21:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-28 20:21:29,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135135135135136 [2023-11-28 20:21:29,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-28 20:21:29,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-28 20:21:29,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:29,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-28 20:21:29,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,927 INFO L175 Difference]: Start difference. First operand has 152 places, 155 transitions, 318 flow. Second operand 3 states and 396 transitions. [2023-11-28 20:21:29,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 436 flow [2023-11-28 20:21:29,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 153 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:29,930 INFO L231 Difference]: Finished difference. Result has 150 places, 153 transitions, 314 flow [2023-11-28 20:21:29,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=150, PETRI_TRANSITIONS=153} [2023-11-28 20:21:29,931 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -25 predicate places. [2023-11-28 20:21:29,932 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 153 transitions, 314 flow [2023-11-28 20:21:29,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:29,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:29,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:29,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:21:29,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:29,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -602545458, now seen corresponding path program 1 times [2023-11-28 20:21:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:29,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482994737] [2023-11-28 20:21:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:29,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:29,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:29,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482994737] [2023-11-28 20:21:29,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482994737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:29,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:29,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:21:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542233338] [2023-11-28 20:21:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:30,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-28 20:21:30,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 153 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:30,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-28 20:21:30,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:30,475 INFO L124 PetriNetUnfolderBase]: 1850/4903 cut-off events. [2023-11-28 20:21:30,475 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-28 20:21:30,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7890 conditions, 4903 events. 1850/4903 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 39053 event pairs, 1481 based on Foata normal form. 0/3646 useless extension candidates. Maximal degree in co-relation 7880. Up to 2951 conditions per place. [2023-11-28 20:21:30,492 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 61 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-11-28 20:21:30,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 436 flow [2023-11-28 20:21:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-28 20:21:30,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-28 20:21:30,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-28 20:21:30,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-28 20:21:30,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:30,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-28 20:21:30,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,498 INFO L175 Difference]: Start difference. First operand has 150 places, 153 transitions, 314 flow. Second operand 3 states and 392 transitions. [2023-11-28 20:21:30,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 436 flow [2023-11-28 20:21:30,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:30,501 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 310 flow [2023-11-28 20:21:30,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2023-11-28 20:21:30,502 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -27 predicate places. [2023-11-28 20:21:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 310 flow [2023-11-28 20:21:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:30,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:30,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:21:30,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:30,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash 776465401, now seen corresponding path program 1 times [2023-11-28 20:21:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:30,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407383971] [2023-11-28 20:21:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407383971] [2023-11-28 20:21:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407383971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519643673] [2023-11-28 20:21:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:30,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:30,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 185 [2023-11-28 20:21:30,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:30,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:30,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 185 [2023-11-28 20:21:30,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:31,370 INFO L124 PetriNetUnfolderBase]: 2135/4707 cut-off events. [2023-11-28 20:21:31,370 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:21:31,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8154 conditions, 4707 events. 2135/4707 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 33524 event pairs, 747 based on Foata normal form. 0/4124 useless extension candidates. Maximal degree in co-relation 8144. Up to 1929 conditions per place. [2023-11-28 20:21:31,394 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 82 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2023-11-28 20:21:31,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 155 transitions, 497 flow [2023-11-28 20:21:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:21:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-11-28 20:21:31,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783783783783784 [2023-11-28 20:21:31,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-11-28 20:21:31,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-11-28 20:21:31,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:31,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-11-28 20:21:31,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:31,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:31,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:31,401 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 310 flow. Second operand 5 states and 535 transitions. [2023-11-28 20:21:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 155 transitions, 497 flow [2023-11-28 20:21:31,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 155 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:31,404 INFO L231 Difference]: Finished difference. Result has 134 places, 135 transitions, 288 flow [2023-11-28 20:21:31,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2023-11-28 20:21:31,405 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -41 predicate places. [2023-11-28 20:21:31,405 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 288 flow [2023-11-28 20:21:31,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:31,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:31,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:31,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:21:31,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:31,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 776465402, now seen corresponding path program 1 times [2023-11-28 20:21:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:31,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236138904] [2023-11-28 20:21:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:31,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236138904] [2023-11-28 20:21:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236138904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:31,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418683884] [2023-11-28 20:21:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:32,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 185 [2023-11-28 20:21:32,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:32,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:32,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 185 [2023-11-28 20:21:32,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:32,564 INFO L124 PetriNetUnfolderBase]: 1798/3881 cut-off events. [2023-11-28 20:21:32,564 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-11-28 20:21:32,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6915 conditions, 3881 events. 1798/3881 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 26069 event pairs, 738 based on Foata normal form. 216/3539 useless extension candidates. Maximal degree in co-relation 2647. Up to 1476 conditions per place. [2023-11-28 20:21:32,579 INFO L140 encePairwiseOnDemand]: 164/185 looper letters, 74 selfloop transitions, 7 changer transitions 0/141 dead transitions. [2023-11-28 20:21:32,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 141 transitions, 463 flow [2023-11-28 20:21:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 689 transitions. [2023-11-28 20:21:32,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207207207207207 [2023-11-28 20:21:32,583 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 689 transitions. [2023-11-28 20:21:32,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 689 transitions. [2023-11-28 20:21:32,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:32,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 689 transitions. [2023-11-28 20:21:32,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:32,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:32,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:32,589 INFO L175 Difference]: Start difference. First operand has 134 places, 135 transitions, 288 flow. Second operand 6 states and 689 transitions. [2023-11-28 20:21:32,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 141 transitions, 463 flow [2023-11-28 20:21:32,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 141 transitions, 449 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:21:32,593 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 260 flow [2023-11-28 20:21:32,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2023-11-28 20:21:32,593 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -54 predicate places. [2023-11-28 20:21:32,594 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 260 flow [2023-11-28 20:21:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:32,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:32,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:21:32,594 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:32,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1699375518, now seen corresponding path program 1 times [2023-11-28 20:21:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209041023] [2023-11-28 20:21:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209041023] [2023-11-28 20:21:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209041023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:33,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:33,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:21:33,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876673994] [2023-11-28 20:21:33,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:33,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:21:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:21:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:21:33,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 185 [2023-11-28 20:21:33,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:33,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:33,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 185 [2023-11-28 20:21:33,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:34,220 INFO L124 PetriNetUnfolderBase]: 2502/5428 cut-off events. [2023-11-28 20:21:34,220 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-28 20:21:34,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 5428 events. 2502/5428 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39295 event pairs, 536 based on Foata normal form. 0/4431 useless extension candidates. Maximal degree in co-relation 3717. Up to 3437 conditions per place. [2023-11-28 20:21:34,238 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 124 selfloop transitions, 12 changer transitions 0/188 dead transitions. [2023-11-28 20:21:34,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 671 flow [2023-11-28 20:21:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:21:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:21:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 898 transitions. [2023-11-28 20:21:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067567567567568 [2023-11-28 20:21:34,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 898 transitions. [2023-11-28 20:21:34,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 898 transitions. [2023-11-28 20:21:34,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:34,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 898 transitions. [2023-11-28 20:21:34,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.25) internal successors, (898), 8 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,246 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,246 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 260 flow. Second operand 8 states and 898 transitions. [2023-11-28 20:21:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 671 flow [2023-11-28 20:21:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 188 transitions, 655 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 20:21:34,251 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 322 flow [2023-11-28 20:21:34,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=322, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2023-11-28 20:21:34,252 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -48 predicate places. [2023-11-28 20:21:34,252 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 322 flow [2023-11-28 20:21:34,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:34,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:34,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:21:34,254 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:34,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash 604103670, now seen corresponding path program 1 times [2023-11-28 20:21:34,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:34,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854737173] [2023-11-28 20:21:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854737173] [2023-11-28 20:21:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854737173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:34,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:34,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535139208] [2023-11-28 20:21:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:34,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:21:34,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:34,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:21:34,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:34,693 INFO L124 PetriNetUnfolderBase]: 1391/3289 cut-off events. [2023-11-28 20:21:34,693 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-28 20:21:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 3289 events. 1391/3289 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20503 event pairs, 707 based on Foata normal form. 53/2813 useless extension candidates. Maximal degree in co-relation 5707. Up to 1252 conditions per place. [2023-11-28 20:21:34,703 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 83 selfloop transitions, 3 changer transitions 0/145 dead transitions. [2023-11-28 20:21:34,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 145 transitions, 496 flow [2023-11-28 20:21:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-11-28 20:21:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7675675675675676 [2023-11-28 20:21:34,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-11-28 20:21:34,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-11-28 20:21:34,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:34,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-11-28 20:21:34,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,708 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 322 flow. Second operand 3 states and 426 transitions. [2023-11-28 20:21:34,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 145 transitions, 496 flow [2023-11-28 20:21:34,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 145 transitions, 469 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-11-28 20:21:34,711 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 259 flow [2023-11-28 20:21:34,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2023-11-28 20:21:34,712 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-28 20:21:34,712 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 259 flow [2023-11-28 20:21:34,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:34,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:34,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:21:34,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:34,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 42835281, now seen corresponding path program 1 times [2023-11-28 20:21:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124496578] [2023-11-28 20:21:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124496578] [2023-11-28 20:21:34,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124496578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:34,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:34,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:34,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965668648] [2023-11-28 20:21:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:34,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:21:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:21:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:21:35,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-28 20:21:35,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:35,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:35,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-28 20:21:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:35,426 INFO L124 PetriNetUnfolderBase]: 2290/5051 cut-off events. [2023-11-28 20:21:35,426 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-28 20:21:35,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8835 conditions, 5051 events. 2290/5051 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 33433 event pairs, 1839 based on Foata normal form. 73/4380 useless extension candidates. Maximal degree in co-relation 8830. Up to 3557 conditions per place. [2023-11-28 20:21:35,442 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 63 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-28 20:21:35,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 383 flow [2023-11-28 20:21:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-28 20:21:35,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990990990990991 [2023-11-28 20:21:35,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-28 20:21:35,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-28 20:21:35,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:35,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-28 20:21:35,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:35,447 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 259 flow. Second operand 3 states and 388 transitions. [2023-11-28 20:21:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 383 flow [2023-11-28 20:21:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:35,450 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 254 flow [2023-11-28 20:21:35,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-11-28 20:21:35,450 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-28 20:21:35,450 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 254 flow [2023-11-28 20:21:35,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:35,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:35,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:21:35,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:35,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash 42835282, now seen corresponding path program 1 times [2023-11-28 20:21:35,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076343550] [2023-11-28 20:21:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:35,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076343550] [2023-11-28 20:21:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076343550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:35,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:35,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:21:35,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871606857] [2023-11-28 20:21:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:35,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:21:35,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:21:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:21:36,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:21:36,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 254 flow. Second operand has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:36,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:36,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:21:36,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:36,923 INFO L124 PetriNetUnfolderBase]: 1652/3726 cut-off events. [2023-11-28 20:21:36,924 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-28 20:21:36,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 3726 events. 1652/3726 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 23140 event pairs, 406 based on Foata normal form. 0/3179 useless extension candidates. Maximal degree in co-relation 6583. Up to 2374 conditions per place. [2023-11-28 20:21:36,936 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 99 selfloop transitions, 9 changer transitions 0/156 dead transitions. [2023-11-28 20:21:36,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 551 flow [2023-11-28 20:21:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:21:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 20:21:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1053 transitions. [2023-11-28 20:21:36,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2023-11-28 20:21:36,941 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1053 transitions. [2023-11-28 20:21:36,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1053 transitions. [2023-11-28 20:21:36,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:36,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1053 transitions. [2023-11-28 20:21:36,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:36,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:36,948 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:36,948 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 254 flow. Second operand 9 states and 1053 transitions. [2023-11-28 20:21:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 551 flow [2023-11-28 20:21:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 156 transitions, 547 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:36,952 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 264 flow [2023-11-28 20:21:36,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2023-11-28 20:21:36,953 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-28 20:21:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 264 flow [2023-11-28 20:21:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:36,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:21:36,955 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:36,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1361225858, now seen corresponding path program 1 times [2023-11-28 20:21:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:36,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231443161] [2023-11-28 20:21:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:37,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231443161] [2023-11-28 20:21:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231443161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:37,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142292136] [2023-11-28 20:21:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:21:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:21:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:21:37,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:21:37,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:37,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:21:37,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:37,637 INFO L124 PetriNetUnfolderBase]: 1380/3297 cut-off events. [2023-11-28 20:21:37,637 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-11-28 20:21:37,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5750 conditions, 3297 events. 1380/3297 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20732 event pairs, 1089 based on Foata normal form. 0/2775 useless extension candidates. Maximal degree in co-relation 5745. Up to 2232 conditions per place. [2023-11-28 20:21:37,648 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-11-28 20:21:37,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 384 flow [2023-11-28 20:21:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:21:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:21:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2023-11-28 20:21:37,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6878378378378378 [2023-11-28 20:21:37,650 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2023-11-28 20:21:37,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2023-11-28 20:21:37,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:37,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2023-11-28 20:21:37,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,654 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 264 flow. Second operand 4 states and 509 transitions. [2023-11-28 20:21:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 384 flow [2023-11-28 20:21:37,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 366 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 20:21:37,657 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 248 flow [2023-11-28 20:21:37,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2023-11-28 20:21:37,658 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-28 20:21:37,658 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 248 flow [2023-11-28 20:21:37,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:37,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:21:37,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:37,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash -751670441, now seen corresponding path program 1 times [2023-11-28 20:21:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:37,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916321396] [2023-11-28 20:21:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:37,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916321396] [2023-11-28 20:21:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916321396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:37,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128185488] [2023-11-28 20:21:37,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:37,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:37,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:37,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:21:37,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:37,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:37,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:21:37,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:38,342 INFO L124 PetriNetUnfolderBase]: 1397/3290 cut-off events. [2023-11-28 20:21:38,342 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-28 20:21:38,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 3290 events. 1397/3290 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20528 event pairs, 1074 based on Foata normal form. 0/2804 useless extension candidates. Maximal degree in co-relation 5707. Up to 2202 conditions per place. [2023-11-28 20:21:38,353 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 67 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-28 20:21:38,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 405 flow [2023-11-28 20:21:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:21:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 598 transitions. [2023-11-28 20:21:38,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464864864864864 [2023-11-28 20:21:38,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 598 transitions. [2023-11-28 20:21:38,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 598 transitions. [2023-11-28 20:21:38,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:38,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 598 transitions. [2023-11-28 20:21:38,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:38,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:38,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:38,358 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 248 flow. Second operand 5 states and 598 transitions. [2023-11-28 20:21:38,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 405 flow [2023-11-28 20:21:38,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:38,361 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 251 flow [2023-11-28 20:21:38,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-28 20:21:38,362 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-28 20:21:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 251 flow [2023-11-28 20:21:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:38,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:38,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:21:38,363 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash -751670440, now seen corresponding path program 1 times [2023-11-28 20:21:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022021900] [2023-11-28 20:21:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022021900] [2023-11-28 20:21:38,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022021900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537164002] [2023-11-28 20:21:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:38,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:38,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:21:38,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:38,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:38,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:21:38,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:39,331 INFO L124 PetriNetUnfolderBase]: 1380/3249 cut-off events. [2023-11-28 20:21:39,332 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-28 20:21:39,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 3249 events. 1380/3249 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20268 event pairs, 1074 based on Foata normal form. 24/2787 useless extension candidates. Maximal degree in co-relation 5661. Up to 2203 conditions per place. [2023-11-28 20:21:39,342 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 64 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2023-11-28 20:21:39,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 119 transitions, 402 flow [2023-11-28 20:21:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 736 transitions. [2023-11-28 20:21:39,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630630630630631 [2023-11-28 20:21:39,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 736 transitions. [2023-11-28 20:21:39,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 736 transitions. [2023-11-28 20:21:39,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:39,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 736 transitions. [2023-11-28 20:21:39,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.66666666666667) internal successors, (736), 6 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,349 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 251 flow. Second operand 6 states and 736 transitions. [2023-11-28 20:21:39,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 119 transitions, 402 flow [2023-11-28 20:21:39,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 392 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:21:39,351 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 247 flow [2023-11-28 20:21:39,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2023-11-28 20:21:39,352 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-28 20:21:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 247 flow [2023-11-28 20:21:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:39,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 20:21:39,352 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:39,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1826979034, now seen corresponding path program 1 times [2023-11-28 20:21:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307273469] [2023-11-28 20:21:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:39,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307273469] [2023-11-28 20:21:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307273469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:39,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:39,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:39,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030742144] [2023-11-28 20:21:39,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:39,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:39,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:21:39,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:39,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:21:39,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:39,719 INFO L124 PetriNetUnfolderBase]: 1368/3237 cut-off events. [2023-11-28 20:21:39,719 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-28 20:21:39,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5641 conditions, 3237 events. 1368/3237 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20257 event pairs, 1074 based on Foata normal form. 0/2763 useless extension candidates. Maximal degree in co-relation 5636. Up to 2194 conditions per place. [2023-11-28 20:21:39,731 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 66 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-28 20:21:39,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 398 flow [2023-11-28 20:21:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-11-28 20:21:39,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-28 20:21:39,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-11-28 20:21:39,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-11-28 20:21:39,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:39,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-11-28 20:21:39,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,736 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 247 flow. Second operand 3 states and 407 transitions. [2023-11-28 20:21:39,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 398 flow [2023-11-28 20:21:39,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 388 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 20:21:39,738 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 239 flow [2023-11-28 20:21:39,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2023-11-28 20:21:39,738 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -63 predicate places. [2023-11-28 20:21:39,738 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 239 flow [2023-11-28 20:21:39,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:39,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:39,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:21:39,739 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:39,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1201692480, now seen corresponding path program 1 times [2023-11-28 20:21:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374633633] [2023-11-28 20:21:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374633633] [2023-11-28 20:21:41,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374633633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:41,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-28 20:21:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629980129] [2023-11-28 20:21:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:41,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:21:41,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:21:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:21:42,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:21:42,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 239 flow. Second operand has 14 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:42,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:42,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:21:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:42,930 INFO L124 PetriNetUnfolderBase]: 1634/3511 cut-off events. [2023-11-28 20:21:42,930 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-28 20:21:42,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 3511 events. 1634/3511 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 21056 event pairs, 434 based on Foata normal form. 0/3120 useless extension candidates. Maximal degree in co-relation 6353. Up to 1940 conditions per place. [2023-11-28 20:21:42,941 INFO L140 encePairwiseOnDemand]: 171/185 looper letters, 127 selfloop transitions, 13 changer transitions 0/180 dead transitions. [2023-11-28 20:21:42,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 670 flow [2023-11-28 20:21:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:21:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:21:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1400 transitions. [2023-11-28 20:21:42,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2023-11-28 20:21:42,945 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1400 transitions. [2023-11-28 20:21:42,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1400 transitions. [2023-11-28 20:21:42,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:42,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1400 transitions. [2023-11-28 20:21:42,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:42,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:42,952 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:42,952 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 239 flow. Second operand 12 states and 1400 transitions. [2023-11-28 20:21:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 670 flow [2023-11-28 20:21:42,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:42,955 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 261 flow [2023-11-28 20:21:42,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=261, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2023-11-28 20:21:42,956 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -57 predicate places. [2023-11-28 20:21:42,956 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 261 flow [2023-11-28 20:21:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 20:21:42,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 88265539, now seen corresponding path program 1 times [2023-11-28 20:21:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437026631] [2023-11-28 20:21:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:43,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437026631] [2023-11-28 20:21:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437026631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:43,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 20:21:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950227056] [2023-11-28 20:21:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:21:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:21:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:21:45,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 185 [2023-11-28 20:21:45,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 261 flow. Second operand has 13 states, 13 states have (on average 90.15384615384616) internal successors, (1172), 13 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:45,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:45,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 185 [2023-11-28 20:21:45,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:46,410 INFO L124 PetriNetUnfolderBase]: 1689/3616 cut-off events. [2023-11-28 20:21:46,410 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-11-28 20:21:46,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 3616 events. 1689/3616 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21940 event pairs, 466 based on Foata normal form. 12/3219 useless extension candidates. Maximal degree in co-relation 6718. Up to 2056 conditions per place. [2023-11-28 20:21:46,422 INFO L140 encePairwiseOnDemand]: 170/185 looper letters, 126 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-11-28 20:21:46,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 180 transitions, 698 flow [2023-11-28 20:21:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:21:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:21:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1196 transitions. [2023-11-28 20:21:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387387387387388 [2023-11-28 20:21:46,426 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1196 transitions. [2023-11-28 20:21:46,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1196 transitions. [2023-11-28 20:21:46,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:46,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1196 transitions. [2023-11-28 20:21:46,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 99.66666666666667) internal successors, (1196), 12 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:46,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:46,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:46,432 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 261 flow. Second operand 12 states and 1196 transitions. [2023-11-28 20:21:46,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 180 transitions, 698 flow [2023-11-28 20:21:46,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 180 transitions, 676 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 20:21:46,436 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 287 flow [2023-11-28 20:21:46,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=287, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2023-11-28 20:21:46,436 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-28 20:21:46,436 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 287 flow [2023-11-28 20:21:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.15384615384616) internal successors, (1172), 13 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:46,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:46,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 20:21:46,437 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:46,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1553881435, now seen corresponding path program 1 times [2023-11-28 20:21:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165689722] [2023-11-28 20:21:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165689722] [2023-11-28 20:21:47,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165689722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:47,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:47,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-28 20:21:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593080375] [2023-11-28 20:21:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 20:21:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 20:21:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:21:48,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:21:48,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 287 flow. Second operand has 15 states, 15 states have (on average 107.26666666666667) internal successors, (1609), 15 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:21:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:49,360 INFO L124 PetriNetUnfolderBase]: 1846/3811 cut-off events. [2023-11-28 20:21:49,361 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-28 20:21:49,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7382 conditions, 3811 events. 1846/3811 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22282 event pairs, 496 based on Foata normal form. 0/3440 useless extension candidates. Maximal degree in co-relation 7373. Up to 1990 conditions per place. [2023-11-28 20:21:49,374 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 161 selfloop transitions, 23 changer transitions 0/224 dead transitions. [2023-11-28 20:21:49,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 224 transitions, 903 flow [2023-11-28 20:21:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:21:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 20:21:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1759 transitions. [2023-11-28 20:21:49,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6338738738738738 [2023-11-28 20:21:49,377 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1759 transitions. [2023-11-28 20:21:49,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1759 transitions. [2023-11-28 20:21:49,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:49,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1759 transitions. [2023-11-28 20:21:49,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 117.26666666666667) internal successors, (1759), 15 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:49,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:49,384 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:49,384 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 287 flow. Second operand 15 states and 1759 transitions. [2023-11-28 20:21:49,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 224 transitions, 903 flow [2023-11-28 20:21:49,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 224 transitions, 881 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-28 20:21:49,388 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 347 flow [2023-11-28 20:21:49,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=347, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2023-11-28 20:21:49,389 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -46 predicate places. [2023-11-28 20:21:49,389 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 347 flow [2023-11-28 20:21:49,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.26666666666667) internal successors, (1609), 15 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:49,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:49,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:49,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 20:21:49,389 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:49,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash 926760372, now seen corresponding path program 1 times [2023-11-28 20:21:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:49,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882989309] [2023-11-28 20:21:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:49,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:49,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882989309] [2023-11-28 20:21:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882989309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163160974] [2023-11-28 20:21:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:49,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:21:49,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:49,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:49,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:21:49,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:50,312 INFO L124 PetriNetUnfolderBase]: 1931/3879 cut-off events. [2023-11-28 20:21:50,312 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2023-11-28 20:21:50,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 3879 events. 1931/3879 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22448 event pairs, 1037 based on Foata normal form. 24/3693 useless extension candidates. Maximal degree in co-relation 8376. Up to 2634 conditions per place. [2023-11-28 20:21:50,327 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 95 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-11-28 20:21:50,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 147 transitions, 641 flow [2023-11-28 20:21:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:21:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 648 transitions. [2023-11-28 20:21:50,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005405405405405 [2023-11-28 20:21:50,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 648 transitions. [2023-11-28 20:21:50,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 648 transitions. [2023-11-28 20:21:50,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:50,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 648 transitions. [2023-11-28 20:21:50,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,330 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 347 flow. Second operand 5 states and 648 transitions. [2023-11-28 20:21:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 147 transitions, 641 flow [2023-11-28 20:21:50,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 147 transitions, 601 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-28 20:21:50,335 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 329 flow [2023-11-28 20:21:50,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2023-11-28 20:21:50,336 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-28 20:21:50,336 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 329 flow [2023-11-28 20:21:50,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:50,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:50,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 20:21:50,336 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:50,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 91127931, now seen corresponding path program 1 times [2023-11-28 20:21:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:50,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388659003] [2023-11-28 20:21:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388659003] [2023-11-28 20:21:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388659003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:50,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666773109] [2023-11-28 20:21:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:50,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:21:50,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:50,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:21:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:50,728 INFO L124 PetriNetUnfolderBase]: 1283/2857 cut-off events. [2023-11-28 20:21:50,728 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-11-28 20:21:50,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5755 conditions, 2857 events. 1283/2857 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 16044 event pairs, 669 based on Foata normal form. 56/2679 useless extension candidates. Maximal degree in co-relation 5743. Up to 1142 conditions per place. [2023-11-28 20:21:50,739 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 79 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-11-28 20:21:50,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 130 transitions, 528 flow [2023-11-28 20:21:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-11-28 20:21:50,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7423423423423423 [2023-11-28 20:21:50,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-11-28 20:21:50,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-11-28 20:21:50,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:50,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-11-28 20:21:50,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,741 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 329 flow. Second operand 3 states and 412 transitions. [2023-11-28 20:21:50,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 130 transitions, 528 flow [2023-11-28 20:21:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 130 transitions, 514 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-28 20:21:50,745 INFO L231 Difference]: Finished difference. Result has 123 places, 114 transitions, 325 flow [2023-11-28 20:21:50,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=123, PETRI_TRANSITIONS=114} [2023-11-28 20:21:50,745 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -52 predicate places. [2023-11-28 20:21:50,745 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 325 flow [2023-11-28 20:21:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:50,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:50,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 20:21:50,746 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:50,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 58065135, now seen corresponding path program 1 times [2023-11-28 20:21:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17217097] [2023-11-28 20:21:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:21:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17217097] [2023-11-28 20:21:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17217097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146443486] [2023-11-28 20:21:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:50,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:50,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:21:50,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:50,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:50,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:21:50,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:51,431 INFO L124 PetriNetUnfolderBase]: 1863/4339 cut-off events. [2023-11-28 20:21:51,431 INFO L125 PetriNetUnfolderBase]: For 734/738 co-relation queries the response was YES. [2023-11-28 20:21:51,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 4339 events. 1863/4339 cut-off events. For 734/738 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 28954 event pairs, 959 based on Foata normal form. 80/4017 useless extension candidates. Maximal degree in co-relation 8520. Up to 1979 conditions per place. [2023-11-28 20:21:51,449 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 115 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2023-11-28 20:21:51,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 167 transitions, 732 flow [2023-11-28 20:21:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-11-28 20:21:51,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2023-11-28 20:21:51,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-11-28 20:21:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-11-28 20:21:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:51,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-11-28 20:21:51,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:51,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:51,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:51,452 INFO L175 Difference]: Start difference. First operand has 123 places, 114 transitions, 325 flow. Second operand 3 states and 445 transitions. [2023-11-28 20:21:51,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 167 transitions, 732 flow [2023-11-28 20:21:51,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 167 transitions, 722 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:21:51,457 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 331 flow [2023-11-28 20:21:51,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2023-11-28 20:21:51,457 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-28 20:21:51,457 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 331 flow [2023-11-28 20:21:51,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:51,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:51,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 20:21:51,458 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:51,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2081248762, now seen corresponding path program 1 times [2023-11-28 20:21:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293045969] [2023-11-28 20:21:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293045969] [2023-11-28 20:21:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293045969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:51,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017197159] [2023-11-28 20:21:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:51,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 185 [2023-11-28 20:21:51,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:51,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:51,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 185 [2023-11-28 20:21:51,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:52,355 INFO L124 PetriNetUnfolderBase]: 2016/4262 cut-off events. [2023-11-28 20:21:52,356 INFO L125 PetriNetUnfolderBase]: For 1071/1071 co-relation queries the response was YES. [2023-11-28 20:21:52,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 4262 events. 2016/4262 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 25791 event pairs, 1366 based on Foata normal form. 0/4144 useless extension candidates. Maximal degree in co-relation 9295. Up to 2668 conditions per place. [2023-11-28 20:21:52,374 INFO L140 encePairwiseOnDemand]: 172/185 looper letters, 72 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2023-11-28 20:21:52,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 490 flow [2023-11-28 20:21:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:21:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-28 20:21:52,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075675675675676 [2023-11-28 20:21:52,376 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-28 20:21:52,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-28 20:21:52,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:52,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-28 20:21:52,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,378 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 331 flow. Second operand 5 states and 562 transitions. [2023-11-28 20:21:52,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 490 flow [2023-11-28 20:21:52,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:52,382 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 323 flow [2023-11-28 20:21:52,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2023-11-28 20:21:52,383 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-28 20:21:52,383 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 323 flow [2023-11-28 20:21:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:52,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 20:21:52,383 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:52,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 341733155, now seen corresponding path program 1 times [2023-11-28 20:21:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996979456] [2023-11-28 20:21:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996979456] [2023-11-28 20:21:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996979456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:52,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938429248] [2023-11-28 20:21:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:52,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:21:52,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:52,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:21:52,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:52,850 INFO L124 PetriNetUnfolderBase]: 1242/2988 cut-off events. [2023-11-28 20:21:52,850 INFO L125 PetriNetUnfolderBase]: For 906/906 co-relation queries the response was YES. [2023-11-28 20:21:52,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 2988 events. 1242/2988 cut-off events. For 906/906 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 16810 event pairs, 291 based on Foata normal form. 186/3058 useless extension candidates. Maximal degree in co-relation 6509. Up to 1569 conditions per place. [2023-11-28 20:21:52,863 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 72 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2023-11-28 20:21:52,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 523 flow [2023-11-28 20:21:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:21:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-11-28 20:21:52,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2023-11-28 20:21:52,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-11-28 20:21:52,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-11-28 20:21:52,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:52,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-11-28 20:21:52,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,866 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 323 flow. Second operand 3 states and 411 transitions. [2023-11-28 20:21:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 523 flow [2023-11-28 20:21:52,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 513 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:21:52,870 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 325 flow [2023-11-28 20:21:52,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2023-11-28 20:21:52,871 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-28 20:21:52,871 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 325 flow [2023-11-28 20:21:52,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:52,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:52,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:52,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 20:21:52,871 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:52,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1283944590, now seen corresponding path program 1 times [2023-11-28 20:21:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017116847] [2023-11-28 20:21:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:53,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017116847] [2023-11-28 20:21:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017116847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:21:53,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28452118] [2023-11-28 20:21:53,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:53,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:53,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:21:53,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:53,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:53,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:21:53,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:53,774 INFO L124 PetriNetUnfolderBase]: 1242/2860 cut-off events. [2023-11-28 20:21:53,774 INFO L125 PetriNetUnfolderBase]: For 1058/1058 co-relation queries the response was YES. [2023-11-28 20:21:53,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6648 conditions, 2860 events. 1242/2860 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 15584 event pairs, 870 based on Foata normal form. 54/2843 useless extension candidates. Maximal degree in co-relation 6634. Up to 1886 conditions per place. [2023-11-28 20:21:53,785 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 65 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-11-28 20:21:53,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 472 flow [2023-11-28 20:21:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:21:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2023-11-28 20:21:53,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6562162162162162 [2023-11-28 20:21:53,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2023-11-28 20:21:53,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2023-11-28 20:21:53,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:53,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2023-11-28 20:21:53,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:53,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:53,790 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:53,790 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 325 flow. Second operand 5 states and 607 transitions. [2023-11-28 20:21:53,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 472 flow [2023-11-28 20:21:53,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:21:53,794 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 319 flow [2023-11-28 20:21:53,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-11-28 20:21:53,795 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-28 20:21:53,795 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 319 flow [2023-11-28 20:21:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:53,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:53,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-28 20:21:53,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:53,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2114736404, now seen corresponding path program 1 times [2023-11-28 20:21:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159402014] [2023-11-28 20:21:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159402014] [2023-11-28 20:21:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159402014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:55,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:55,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-28 20:21:55,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491912506] [2023-11-28 20:21:55,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 20:21:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 20:21:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:21:57,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2023-11-28 20:21:57,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 319 flow. Second operand has 18 states, 18 states have (on average 79.38888888888889) internal successors, (1429), 18 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:57,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:57,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2023-11-28 20:21:57,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:58,401 INFO L124 PetriNetUnfolderBase]: 1516/3263 cut-off events. [2023-11-28 20:21:58,402 INFO L125 PetriNetUnfolderBase]: For 1156/1158 co-relation queries the response was YES. [2023-11-28 20:21:58,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 3263 events. 1516/3263 cut-off events. For 1156/1158 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 16495 event pairs, 226 based on Foata normal form. 0/3166 useless extension candidates. Maximal degree in co-relation 7616. Up to 975 conditions per place. [2023-11-28 20:21:58,414 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 171 selfloop transitions, 20 changer transitions 0/216 dead transitions. [2023-11-28 20:21:58,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 216 transitions, 1069 flow [2023-11-28 20:21:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 20:21:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-28 20:21:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1409 transitions. [2023-11-28 20:21:58,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760135135135135 [2023-11-28 20:21:58,417 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1409 transitions. [2023-11-28 20:21:58,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1409 transitions. [2023-11-28 20:21:58,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:58,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1409 transitions. [2023-11-28 20:21:58,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 88.0625) internal successors, (1409), 16 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:58,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:58,421 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:58,421 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 319 flow. Second operand 16 states and 1409 transitions. [2023-11-28 20:21:58,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 216 transitions, 1069 flow [2023-11-28 20:21:58,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 216 transitions, 1057 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:21:58,428 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 394 flow [2023-11-28 20:21:58,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=394, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2023-11-28 20:21:58,429 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -45 predicate places. [2023-11-28 20:21:58,429 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 394 flow [2023-11-28 20:21:58,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 79.38888888888889) internal successors, (1429), 18 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:58,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:58,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:58,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-28 20:21:58,430 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:21:58,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1147555484, now seen corresponding path program 1 times [2023-11-28 20:21:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:58,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865852755] [2023-11-28 20:21:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:58,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:21:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:58,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865852755] [2023-11-28 20:21:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865852755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:21:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180049846] [2023-11-28 20:21:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:58,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:58,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:58,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:21:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:58,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:21:58,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:21:58,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:21:58,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180049846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:58,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:21:58,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-28 20:21:58,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699898882] [2023-11-28 20:21:58,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:58,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:21:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:58,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:21:58,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:21:58,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:21:58,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:58,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:21:58,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:21:58,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:21:59,840 INFO L124 PetriNetUnfolderBase]: 3346/6925 cut-off events. [2023-11-28 20:21:59,840 INFO L125 PetriNetUnfolderBase]: For 3230/3246 co-relation queries the response was YES. [2023-11-28 20:21:59,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16756 conditions, 6925 events. 3346/6925 cut-off events. For 3230/3246 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 42973 event pairs, 386 based on Foata normal form. 389/7126 useless extension candidates. Maximal degree in co-relation 16737. Up to 1421 conditions per place. [2023-11-28 20:21:59,871 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 274 selfloop transitions, 6 changer transitions 0/318 dead transitions. [2023-11-28 20:21:59,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 318 transitions, 1804 flow [2023-11-28 20:21:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:21:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 911 transitions. [2023-11-28 20:21:59,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8207207207207208 [2023-11-28 20:21:59,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 911 transitions. [2023-11-28 20:21:59,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 911 transitions. [2023-11-28 20:21:59,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:21:59,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 911 transitions. [2023-11-28 20:21:59,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:59,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:59,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:59,876 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 394 flow. Second operand 6 states and 911 transitions. [2023-11-28 20:21:59,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 318 transitions, 1804 flow [2023-11-28 20:21:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 318 transitions, 1704 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-28 20:21:59,886 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 405 flow [2023-11-28 20:21:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2023-11-28 20:21:59,887 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -47 predicate places. [2023-11-28 20:21:59,887 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 405 flow [2023-11-28 20:21:59,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:21:59,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:21:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:59,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:22:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 20:22:00,088 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:00,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -44355332, now seen corresponding path program 1 times [2023-11-28 20:22:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:00,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620299181] [2023-11-28 20:22:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620299181] [2023-11-28 20:22:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620299181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:00,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:22:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953718550] [2023-11-28 20:22:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:22:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:22:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:22:00,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:22:00,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:00,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:00,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:22:00,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:01,171 INFO L124 PetriNetUnfolderBase]: 2730/6241 cut-off events. [2023-11-28 20:22:01,171 INFO L125 PetriNetUnfolderBase]: For 5276/5301 co-relation queries the response was YES. [2023-11-28 20:22:01,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16074 conditions, 6241 events. 2730/6241 cut-off events. For 5276/5301 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 40268 event pairs, 1882 based on Foata normal form. 15/6049 useless extension candidates. Maximal degree in co-relation 16052. Up to 4045 conditions per place. [2023-11-28 20:22:01,198 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 124 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2023-11-28 20:22:01,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 165 transitions, 856 flow [2023-11-28 20:22:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:22:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:22:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 549 transitions. [2023-11-28 20:22:01,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7418918918918919 [2023-11-28 20:22:01,200 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 549 transitions. [2023-11-28 20:22:01,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 549 transitions. [2023-11-28 20:22:01,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:01,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 549 transitions. [2023-11-28 20:22:01,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:01,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:01,202 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:01,202 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 405 flow. Second operand 4 states and 549 transitions. [2023-11-28 20:22:01,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 165 transitions, 856 flow [2023-11-28 20:22:01,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 165 transitions, 848 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-28 20:22:01,213 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 407 flow [2023-11-28 20:22:01,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=407, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2023-11-28 20:22:01,214 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -44 predicate places. [2023-11-28 20:22:01,214 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 407 flow [2023-11-28 20:22:01,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:01,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:01,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:01,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-28 20:22:01,214 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:01,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1461145213, now seen corresponding path program 1 times [2023-11-28 20:22:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:01,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211591282] [2023-11-28 20:22:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211591282] [2023-11-28 20:22:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211591282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:02,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-28 20:22:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956082474] [2023-11-28 20:22:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:02,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 20:22:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 20:22:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-28 20:22:04,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-28 20:22:04,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 407 flow. Second operand has 20 states, 20 states have (on average 105.55) internal successors, (2111), 20 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:04,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:04,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-28 20:22:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:05,978 INFO L124 PetriNetUnfolderBase]: 2820/6264 cut-off events. [2023-11-28 20:22:05,978 INFO L125 PetriNetUnfolderBase]: For 5436/5436 co-relation queries the response was YES. [2023-11-28 20:22:05,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16407 conditions, 6264 events. 2820/6264 cut-off events. For 5436/5436 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 38425 event pairs, 512 based on Foata normal form. 0/6174 useless extension candidates. Maximal degree in co-relation 16383. Up to 2048 conditions per place. [2023-11-28 20:22:06,012 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 197 selfloop transitions, 22 changer transitions 0/247 dead transitions. [2023-11-28 20:22:06,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 247 transitions, 1539 flow [2023-11-28 20:22:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 20:22:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-28 20:22:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1929 transitions. [2023-11-28 20:22:06,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133545310015899 [2023-11-28 20:22:06,015 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1929 transitions. [2023-11-28 20:22:06,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1929 transitions. [2023-11-28 20:22:06,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:06,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1929 transitions. [2023-11-28 20:22:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.47058823529412) internal successors, (1929), 17 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:06,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:06,020 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 407 flow. Second operand 17 states and 1929 transitions. [2023-11-28 20:22:06,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 247 transitions, 1539 flow [2023-11-28 20:22:06,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 247 transitions, 1489 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 20:22:06,034 INFO L231 Difference]: Finished difference. Result has 146 places, 112 transitions, 455 flow [2023-11-28 20:22:06,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=455, PETRI_PLACES=146, PETRI_TRANSITIONS=112} [2023-11-28 20:22:06,035 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -29 predicate places. [2023-11-28 20:22:06,035 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 112 transitions, 455 flow [2023-11-28 20:22:06,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.55) internal successors, (2111), 20 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:06,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:06,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:06,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-28 20:22:06,036 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:06,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1016186149, now seen corresponding path program 1 times [2023-11-28 20:22:06,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:06,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656267365] [2023-11-28 20:22:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:06,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656267365] [2023-11-28 20:22:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656267365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:22:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58919908] [2023-11-28 20:22:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:22:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:22:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:22:14,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:22:14,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 112 transitions, 455 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:14,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:14,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:22:14,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:16,736 INFO L124 PetriNetUnfolderBase]: 3063/6890 cut-off events. [2023-11-28 20:22:16,737 INFO L125 PetriNetUnfolderBase]: For 5876/5879 co-relation queries the response was YES. [2023-11-28 20:22:16,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18390 conditions, 6890 events. 3063/6890 cut-off events. For 5876/5879 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 44230 event pairs, 877 based on Foata normal form. 0/6774 useless extension candidates. Maximal degree in co-relation 18364. Up to 4701 conditions per place. [2023-11-28 20:22:16,781 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 181 selfloop transitions, 50 changer transitions 0/261 dead transitions. [2023-11-28 20:22:16,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 261 transitions, 1528 flow [2023-11-28 20:22:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:22:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:22:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3123 transitions. [2023-11-28 20:22:16,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6028957528957529 [2023-11-28 20:22:16,785 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3123 transitions. [2023-11-28 20:22:16,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3123 transitions. [2023-11-28 20:22:16,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:16,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3123 transitions. [2023-11-28 20:22:16,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.53571428571429) internal successors, (3123), 28 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:16,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:16,794 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:16,795 INFO L175 Difference]: Start difference. First operand has 146 places, 112 transitions, 455 flow. Second operand 28 states and 3123 transitions. [2023-11-28 20:22:16,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 261 transitions, 1528 flow [2023-11-28 20:22:16,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 261 transitions, 1457 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-28 20:22:16,813 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 890 flow [2023-11-28 20:22:16,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=890, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2023-11-28 20:22:16,814 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -1 predicate places. [2023-11-28 20:22:16,814 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 890 flow [2023-11-28 20:22:16,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:16,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:16,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-28 20:22:16,815 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:16,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:16,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2080697725, now seen corresponding path program 2 times [2023-11-28 20:22:16,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:16,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80068188] [2023-11-28 20:22:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80068188] [2023-11-28 20:22:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80068188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:22:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077397496] [2023-11-28 20:22:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:20,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:22:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:22:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:22:23,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:22:23,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 890 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:23,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:23,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:22:23,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:26,120 INFO L124 PetriNetUnfolderBase]: 3336/7486 cut-off events. [2023-11-28 20:22:26,121 INFO L125 PetriNetUnfolderBase]: For 8029/8029 co-relation queries the response was YES. [2023-11-28 20:22:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21186 conditions, 7486 events. 3336/7486 cut-off events. For 8029/8029 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 49107 event pairs, 902 based on Foata normal form. 0/7370 useless extension candidates. Maximal degree in co-relation 21146. Up to 4987 conditions per place. [2023-11-28 20:22:26,166 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 222 selfloop transitions, 52 changer transitions 0/304 dead transitions. [2023-11-28 20:22:26,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 304 transitions, 2095 flow [2023-11-28 20:22:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:22:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:22:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3113 transitions. [2023-11-28 20:22:26,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600965250965251 [2023-11-28 20:22:26,170 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3113 transitions. [2023-11-28 20:22:26,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3113 transitions. [2023-11-28 20:22:26,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:26,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3113 transitions. [2023-11-28 20:22:26,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.17857142857143) internal successors, (3113), 28 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:26,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:26,181 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:26,181 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 890 flow. Second operand 28 states and 3113 transitions. [2023-11-28 20:22:26,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 304 transitions, 2095 flow [2023-11-28 20:22:26,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 304 transitions, 2089 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-28 20:22:26,227 INFO L231 Difference]: Finished difference. Result has 211 places, 206 transitions, 1391 flow [2023-11-28 20:22:26,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1391, PETRI_PLACES=211, PETRI_TRANSITIONS=206} [2023-11-28 20:22:26,228 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 36 predicate places. [2023-11-28 20:22:26,228 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 206 transitions, 1391 flow [2023-11-28 20:22:26,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:26,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:26,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-28 20:22:26,229 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:26,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1999322531, now seen corresponding path program 3 times [2023-11-28 20:22:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:26,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684836507] [2023-11-28 20:22:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:26,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684836507] [2023-11-28 20:22:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684836507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:29,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:29,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:22:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523059391] [2023-11-28 20:22:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:22:29,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:29,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:22:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:22:37,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:22:37,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 206 transitions, 1391 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:22:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:40,452 INFO L124 PetriNetUnfolderBase]: 3613/8101 cut-off events. [2023-11-28 20:22:40,453 INFO L125 PetriNetUnfolderBase]: For 11727/11727 co-relation queries the response was YES. [2023-11-28 20:22:40,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24768 conditions, 8101 events. 3613/8101 cut-off events. For 11727/11727 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 54451 event pairs, 940 based on Foata normal form. 0/7973 useless extension candidates. Maximal degree in co-relation 24715. Up to 5482 conditions per place. [2023-11-28 20:22:40,521 INFO L140 encePairwiseOnDemand]: 159/185 looper letters, 275 selfloop transitions, 49 changer transitions 0/354 dead transitions. [2023-11-28 20:22:40,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 354 transitions, 2811 flow [2023-11-28 20:22:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:22:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:22:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3118 transitions. [2023-11-28 20:22:40,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019305019305019 [2023-11-28 20:22:40,525 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3118 transitions. [2023-11-28 20:22:40,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3118 transitions. [2023-11-28 20:22:40,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:40,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3118 transitions. [2023-11-28 20:22:40,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.35714285714286) internal successors, (3118), 28 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:40,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:40,534 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:40,534 INFO L175 Difference]: Start difference. First operand has 211 places, 206 transitions, 1391 flow. Second operand 28 states and 3118 transitions. [2023-11-28 20:22:40,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 354 transitions, 2811 flow [2023-11-28 20:22:40,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 354 transitions, 2726 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-11-28 20:22:40,591 INFO L231 Difference]: Finished difference. Result has 246 places, 243 transitions, 1842 flow [2023-11-28 20:22:40,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1842, PETRI_PLACES=246, PETRI_TRANSITIONS=243} [2023-11-28 20:22:40,592 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 71 predicate places. [2023-11-28 20:22:40,592 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 243 transitions, 1842 flow [2023-11-28 20:22:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:40,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:40,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:40,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-28 20:22:40,593 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:40,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash 904332399, now seen corresponding path program 4 times [2023-11-28 20:22:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:40,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865348012] [2023-11-28 20:22:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865348012] [2023-11-28 20:22:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865348012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:43,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:43,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-28 20:22:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457739433] [2023-11-28 20:22:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:43,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:22:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:22:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:22:49,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:22:49,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 243 transitions, 1842 flow. Second operand has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:49,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:49,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:22:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:22:52,621 INFO L124 PetriNetUnfolderBase]: 3884/8707 cut-off events. [2023-11-28 20:22:52,622 INFO L125 PetriNetUnfolderBase]: For 16393/16393 co-relation queries the response was YES. [2023-11-28 20:22:52,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28004 conditions, 8707 events. 3884/8707 cut-off events. For 16393/16393 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 59685 event pairs, 1057 based on Foata normal form. 0/8575 useless extension candidates. Maximal degree in co-relation 27938. Up to 5973 conditions per place. [2023-11-28 20:22:52,684 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 306 selfloop transitions, 61 changer transitions 0/397 dead transitions. [2023-11-28 20:22:52,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 397 transitions, 3444 flow [2023-11-28 20:22:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 20:22:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 20:22:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3332 transitions. [2023-11-28 20:22:52,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003603603603603 [2023-11-28 20:22:52,688 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3332 transitions. [2023-11-28 20:22:52,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3332 transitions. [2023-11-28 20:22:52,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:22:52,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3332 transitions. [2023-11-28 20:22:52,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.06666666666666) internal successors, (3332), 30 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:52,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 185.0) internal successors, (5735), 31 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:52,697 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 185.0) internal successors, (5735), 31 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:52,697 INFO L175 Difference]: Start difference. First operand has 246 places, 243 transitions, 1842 flow. Second operand 30 states and 3332 transitions. [2023-11-28 20:22:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 397 transitions, 3444 flow [2023-11-28 20:22:52,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 397 transitions, 3303 flow, removed 62 selfloop flow, removed 5 redundant places. [2023-11-28 20:22:52,783 INFO L231 Difference]: Finished difference. Result has 281 places, 289 transitions, 2381 flow [2023-11-28 20:22:52,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2381, PETRI_PLACES=281, PETRI_TRANSITIONS=289} [2023-11-28 20:22:52,784 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 106 predicate places. [2023-11-28 20:22:52,784 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 289 transitions, 2381 flow [2023-11-28 20:22:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:52,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:22:52,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-28 20:22:52,785 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:22:52,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1873675971, now seen corresponding path program 5 times [2023-11-28 20:22:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121296957] [2023-11-28 20:22:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:22:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:22:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121296957] [2023-11-28 20:22:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121296957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:22:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:22:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-28 20:22:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904632563] [2023-11-28 20:22:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:22:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:22:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:22:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:22:59,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:22:59,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 289 transitions, 2381 flow. Second operand has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:22:59,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:22:59,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:22:59,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:23:03,296 INFO L124 PetriNetUnfolderBase]: 4190/9376 cut-off events. [2023-11-28 20:23:03,297 INFO L125 PetriNetUnfolderBase]: For 22568/22568 co-relation queries the response was YES. [2023-11-28 20:23:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32052 conditions, 9376 events. 4190/9376 cut-off events. For 22568/22568 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 65196 event pairs, 1007 based on Foata normal form. 0/9250 useless extension candidates. Maximal degree in co-relation 31974. Up to 4878 conditions per place. [2023-11-28 20:23:03,392 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 373 selfloop transitions, 85 changer transitions 0/488 dead transitions. [2023-11-28 20:23:03,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 488 transitions, 4557 flow [2023-11-28 20:23:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-28 20:23:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-28 20:23:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3680 transitions. [2023-11-28 20:23:03,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027846027846028 [2023-11-28 20:23:03,397 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3680 transitions. [2023-11-28 20:23:03,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3680 transitions. [2023-11-28 20:23:03,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:23:03,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3680 transitions. [2023-11-28 20:23:03,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.51515151515152) internal successors, (3680), 33 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:03,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:03,406 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:03,407 INFO L175 Difference]: Start difference. First operand has 281 places, 289 transitions, 2381 flow. Second operand 33 states and 3680 transitions. [2023-11-28 20:23:03,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 488 transitions, 4557 flow [2023-11-28 20:23:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 488 transitions, 4298 flow, removed 112 selfloop flow, removed 7 redundant places. [2023-11-28 20:23:03,651 INFO L231 Difference]: Finished difference. Result has 318 places, 340 transitions, 3019 flow [2023-11-28 20:23:03,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3019, PETRI_PLACES=318, PETRI_TRANSITIONS=340} [2023-11-28 20:23:03,652 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 143 predicate places. [2023-11-28 20:23:03,653 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 340 transitions, 3019 flow [2023-11-28 20:23:03,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:03,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:23:03,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:23:03,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-28 20:23:03,654 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:23:03,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:23:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1574470491, now seen corresponding path program 6 times [2023-11-28 20:23:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:23:03,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753258670] [2023-11-28 20:23:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:23:03,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:23:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:23:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:23:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:23:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753258670] [2023-11-28 20:23:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753258670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:23:06,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:23:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-28 20:23:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731173858] [2023-11-28 20:23:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:23:06,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:23:06,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:23:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:23:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:23:10,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:23:10,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 340 transitions, 3019 flow. Second operand has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:10,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:23:10,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:23:10,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:23:14,726 INFO L124 PetriNetUnfolderBase]: 4461/9973 cut-off events. [2023-11-28 20:23:14,727 INFO L125 PetriNetUnfolderBase]: For 39421/39425 co-relation queries the response was YES. [2023-11-28 20:23:14,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36991 conditions, 9973 events. 4461/9973 cut-off events. For 39421/39425 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 70615 event pairs, 1044 based on Foata normal form. 4/9845 useless extension candidates. Maximal degree in co-relation 36900. Up to 5425 conditions per place. [2023-11-28 20:23:14,842 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 415 selfloop transitions, 72 changer transitions 0/517 dead transitions. [2023-11-28 20:23:14,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 517 transitions, 5250 flow [2023-11-28 20:23:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 20:23:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 20:23:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3359 transitions. [2023-11-28 20:23:14,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052252252252253 [2023-11-28 20:23:14,847 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3359 transitions. [2023-11-28 20:23:14,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3359 transitions. [2023-11-28 20:23:14,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:23:14,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3359 transitions. [2023-11-28 20:23:14,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.96666666666667) internal successors, (3359), 30 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:14,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 185.0) internal successors, (5735), 31 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:14,854 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 185.0) internal successors, (5735), 31 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:14,854 INFO L175 Difference]: Start difference. First operand has 318 places, 340 transitions, 3019 flow. Second operand 30 states and 3359 transitions. [2023-11-28 20:23:14,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 517 transitions, 5250 flow [2023-11-28 20:23:15,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 517 transitions, 4880 flow, removed 151 selfloop flow, removed 9 redundant places. [2023-11-28 20:23:15,111 INFO L231 Difference]: Finished difference. Result has 353 places, 382 transitions, 3560 flow [2023-11-28 20:23:15,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3560, PETRI_PLACES=353, PETRI_TRANSITIONS=382} [2023-11-28 20:23:15,111 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 178 predicate places. [2023-11-28 20:23:15,111 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 382 transitions, 3560 flow [2023-11-28 20:23:15,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:15,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:23:15,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:23:15,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-28 20:23:15,112 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:23:15,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:23:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -193271729, now seen corresponding path program 7 times [2023-11-28 20:23:15,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:23:15,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879581097] [2023-11-28 20:23:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:23:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:23:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:23:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:23:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:23:17,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879581097] [2023-11-28 20:23:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879581097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:23:17,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:23:17,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:23:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985591592] [2023-11-28 20:23:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:23:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:23:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:23:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:23:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:23:22,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:23:22,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 382 transitions, 3560 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:22,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:23:22,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:23:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:23:27,503 INFO L124 PetriNetUnfolderBase]: 4663/10395 cut-off events. [2023-11-28 20:23:27,503 INFO L125 PetriNetUnfolderBase]: For 64869/64871 co-relation queries the response was YES. [2023-11-28 20:23:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41111 conditions, 10395 events. 4663/10395 cut-off events. For 64869/64871 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 74453 event pairs, 1014 based on Foata normal form. 2/10283 useless extension candidates. Maximal degree in co-relation 41005. Up to 5574 conditions per place. [2023-11-28 20:23:27,637 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 446 selfloop transitions, 108 changer transitions 0/584 dead transitions. [2023-11-28 20:23:27,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 584 transitions, 6136 flow [2023-11-28 20:23:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-28 20:23:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-28 20:23:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4116 transitions. [2023-11-28 20:23:27,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013148283418553 [2023-11-28 20:23:27,642 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4116 transitions. [2023-11-28 20:23:27,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4116 transitions. [2023-11-28 20:23:27,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:23:27,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4116 transitions. [2023-11-28 20:23:27,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 111.24324324324324) internal successors, (4116), 37 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:27,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 185.0) internal successors, (7030), 38 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:27,653 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 185.0) internal successors, (7030), 38 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:27,653 INFO L175 Difference]: Start difference. First operand has 353 places, 382 transitions, 3560 flow. Second operand 37 states and 4116 transitions. [2023-11-28 20:23:27,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 584 transitions, 6136 flow [2023-11-28 20:23:28,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 584 transitions, 5681 flow, removed 207 selfloop flow, removed 7 redundant places. [2023-11-28 20:23:28,408 INFO L231 Difference]: Finished difference. Result has 390 places, 417 transitions, 4079 flow [2023-11-28 20:23:28,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4079, PETRI_PLACES=390, PETRI_TRANSITIONS=417} [2023-11-28 20:23:28,409 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 215 predicate places. [2023-11-28 20:23:28,409 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 417 transitions, 4079 flow [2023-11-28 20:23:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:28,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:23:28,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:23:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-28 20:23:28,410 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:23:28,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:23:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1257953735, now seen corresponding path program 8 times [2023-11-28 20:23:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:23:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499688481] [2023-11-28 20:23:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:23:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:23:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:23:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:23:31,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:23:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499688481] [2023-11-28 20:23:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499688481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:23:31,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:23:31,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-28 20:23:31,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870121852] [2023-11-28 20:23:31,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:23:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:23:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:23:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:23:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:23:37,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:23:37,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 417 transitions, 4079 flow. Second operand has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:37,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:23:37,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:23:37,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:23:41,711 INFO L124 PetriNetUnfolderBase]: 4836/10729 cut-off events. [2023-11-28 20:23:41,711 INFO L125 PetriNetUnfolderBase]: For 74588/74590 co-relation queries the response was YES. [2023-11-28 20:23:41,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43513 conditions, 10729 events. 4836/10729 cut-off events. For 74588/74590 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 77234 event pairs, 1031 based on Foata normal form. 2/10611 useless extension candidates. Maximal degree in co-relation 43398. Up to 4719 conditions per place. [2023-11-28 20:23:42,027 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 418 selfloop transitions, 180 changer transitions 0/628 dead transitions. [2023-11-28 20:23:42,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 628 transitions, 6958 flow [2023-11-28 20:23:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-28 20:23:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-28 20:23:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3911 transitions. [2023-11-28 20:23:42,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.604015444015444 [2023-11-28 20:23:42,030 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3911 transitions. [2023-11-28 20:23:42,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3911 transitions. [2023-11-28 20:23:42,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:23:42,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3911 transitions. [2023-11-28 20:23:42,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 111.74285714285715) internal successors, (3911), 35 states have internal predecessors, (3911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:42,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 185.0) internal successors, (6660), 36 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:42,038 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 185.0) internal successors, (6660), 36 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:42,038 INFO L175 Difference]: Start difference. First operand has 390 places, 417 transitions, 4079 flow. Second operand 35 states and 3911 transitions. [2023-11-28 20:23:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 628 transitions, 6958 flow [2023-11-28 20:23:43,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 628 transitions, 6319 flow, removed 263 selfloop flow, removed 15 redundant places. [2023-11-28 20:23:43,163 INFO L231 Difference]: Finished difference. Result has 415 places, 458 transitions, 4783 flow [2023-11-28 20:23:43,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4783, PETRI_PLACES=415, PETRI_TRANSITIONS=458} [2023-11-28 20:23:43,164 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 240 predicate places. [2023-11-28 20:23:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 458 transitions, 4783 flow [2023-11-28 20:23:43,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 105.82142857142857) internal successors, (2963), 28 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:43,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:23:43,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:23:43,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-28 20:23:43,165 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:23:43,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:23:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 824432553, now seen corresponding path program 9 times [2023-11-28 20:23:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:23:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165823903] [2023-11-28 20:23:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:23:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:23:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:23:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:23:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:23:46,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165823903] [2023-11-28 20:23:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165823903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:23:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:23:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:23:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103587777] [2023-11-28 20:23:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:23:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:23:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:23:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:23:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:23:50,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:23:50,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 458 transitions, 4783 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:50,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:23:50,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:23:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:23:55,556 INFO L124 PetriNetUnfolderBase]: 5019/11094 cut-off events. [2023-11-28 20:23:55,556 INFO L125 PetriNetUnfolderBase]: For 71463/71466 co-relation queries the response was YES. [2023-11-28 20:23:55,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45968 conditions, 11094 events. 5019/11094 cut-off events. For 71463/71466 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 80555 event pairs, 625 based on Foata normal form. 2/10998 useless extension candidates. Maximal degree in co-relation 45848. Up to 3012 conditions per place. [2023-11-28 20:23:55,730 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 441 selfloop transitions, 242 changer transitions 0/713 dead transitions. [2023-11-28 20:23:55,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 713 transitions, 8058 flow [2023-11-28 20:23:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-28 20:23:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-28 20:23:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4263 transitions. [2023-11-28 20:23:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064011379800853 [2023-11-28 20:23:55,736 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4263 transitions. [2023-11-28 20:23:55,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4263 transitions. [2023-11-28 20:23:55,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:23:55,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4263 transitions. [2023-11-28 20:23:55,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 112.1842105263158) internal successors, (4263), 38 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:55,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 185.0) internal successors, (7215), 39 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:55,745 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 185.0) internal successors, (7215), 39 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:55,745 INFO L175 Difference]: Start difference. First operand has 415 places, 458 transitions, 4783 flow. Second operand 38 states and 4263 transitions. [2023-11-28 20:23:55,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 713 transitions, 8058 flow [2023-11-28 20:23:56,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 713 transitions, 7289 flow, removed 296 selfloop flow, removed 16 redundant places. [2023-11-28 20:23:56,588 INFO L231 Difference]: Finished difference. Result has 447 places, 500 transitions, 5552 flow [2023-11-28 20:23:56,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5552, PETRI_PLACES=447, PETRI_TRANSITIONS=500} [2023-11-28 20:23:56,589 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 272 predicate places. [2023-11-28 20:23:56,590 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 500 transitions, 5552 flow [2023-11-28 20:23:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:23:56,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:23:56,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:23:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-28 20:23:56,590 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:23:56,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:23:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash -274158937, now seen corresponding path program 10 times [2023-11-28 20:23:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:23:56,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146060038] [2023-11-28 20:23:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:23:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:23:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:23:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:23:59,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:23:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146060038] [2023-11-28 20:23:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146060038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:23:59,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:23:59,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-28 20:23:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797902199] [2023-11-28 20:23:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:23:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 20:23:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:23:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 20:23:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:24:04,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:24:04,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 500 transitions, 5552 flow. Second operand has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:04,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:04,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:24:04,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:08,617 INFO L124 PetriNetUnfolderBase]: 4999/11046 cut-off events. [2023-11-28 20:24:08,617 INFO L125 PetriNetUnfolderBase]: For 62072/62078 co-relation queries the response was YES. [2023-11-28 20:24:08,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46010 conditions, 11046 events. 4999/11046 cut-off events. For 62072/62078 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 80398 event pairs, 2629 based on Foata normal form. 6/10893 useless extension candidates. Maximal degree in co-relation 45878. Up to 8230 conditions per place. [2023-11-28 20:24:08,840 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 548 selfloop transitions, 53 changer transitions 0/631 dead transitions. [2023-11-28 20:24:08,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 631 transitions, 8018 flow [2023-11-28 20:24:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:24:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:24:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3110 transitions. [2023-11-28 20:24:08,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003861003861004 [2023-11-28 20:24:08,843 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3110 transitions. [2023-11-28 20:24:08,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3110 transitions. [2023-11-28 20:24:08,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:08,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3110 transitions. [2023-11-28 20:24:08,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.07142857142857) internal successors, (3110), 28 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:08,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:08,849 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:08,849 INFO L175 Difference]: Start difference. First operand has 447 places, 500 transitions, 5552 flow. Second operand 28 states and 3110 transitions. [2023-11-28 20:24:08,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 631 transitions, 8018 flow [2023-11-28 20:24:09,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 631 transitions, 7446 flow, removed 166 selfloop flow, removed 20 redundant places. [2023-11-28 20:24:09,557 INFO L231 Difference]: Finished difference. Result has 468 places, 537 transitions, 6025 flow [2023-11-28 20:24:09,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5041, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6025, PETRI_PLACES=468, PETRI_TRANSITIONS=537} [2023-11-28 20:24:09,558 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 293 predicate places. [2023-11-28 20:24:09,558 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 537 transitions, 6025 flow [2023-11-28 20:24:09,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 105.88888888888889) internal successors, (2859), 27 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:09,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:09,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-28 20:24:09,559 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:09,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2046521427, now seen corresponding path program 1 times [2023-11-28 20:24:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:09,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12541349] [2023-11-28 20:24:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12541349] [2023-11-28 20:24:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12541349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096321895] [2023-11-28 20:24:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:09,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:09,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:24:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:09,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:24:09,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:10,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:24:10,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-28 20:24:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:10,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096321895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:24:10,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:24:10,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-28 20:24:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77069584] [2023-11-28 20:24:10,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:24:10,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 20:24:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 20:24:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:24:11,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:24:11,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 537 transitions, 6025 flow. Second operand has 17 states, 17 states have (on average 118.47058823529412) internal successors, (2014), 17 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:11,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:11,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:24:11,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:15,663 INFO L124 PetriNetUnfolderBase]: 5766/12956 cut-off events. [2023-11-28 20:24:15,663 INFO L125 PetriNetUnfolderBase]: For 72732/72797 co-relation queries the response was YES. [2023-11-28 20:24:15,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53310 conditions, 12956 events. 5766/12956 cut-off events. For 72732/72797 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 98888 event pairs, 1374 based on Foata normal form. 21/12808 useless extension candidates. Maximal degree in co-relation 53166. Up to 3547 conditions per place. [2023-11-28 20:24:15,839 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 662 selfloop transitions, 143 changer transitions 0/876 dead transitions. [2023-11-28 20:24:15,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 876 transitions, 10421 flow [2023-11-28 20:24:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:24:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 20:24:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1897 transitions. [2023-11-28 20:24:15,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7324324324324324 [2023-11-28 20:24:15,842 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1897 transitions. [2023-11-28 20:24:15,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1897 transitions. [2023-11-28 20:24:15,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:15,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1897 transitions. [2023-11-28 20:24:15,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.5) internal successors, (1897), 14 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:15,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:15,845 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:15,845 INFO L175 Difference]: Start difference. First operand has 468 places, 537 transitions, 6025 flow. Second operand 14 states and 1897 transitions. [2023-11-28 20:24:15,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 876 transitions, 10421 flow [2023-11-28 20:24:16,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 876 transitions, 9849 flow, removed 263 selfloop flow, removed 8 redundant places. [2023-11-28 20:24:16,596 INFO L231 Difference]: Finished difference. Result has 482 places, 584 transitions, 6612 flow [2023-11-28 20:24:16,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6612, PETRI_PLACES=482, PETRI_TRANSITIONS=584} [2023-11-28 20:24:16,597 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 307 predicate places. [2023-11-28 20:24:16,597 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 584 transitions, 6612 flow [2023-11-28 20:24:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 118.47058823529412) internal successors, (2014), 17 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:16,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:16,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:24:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-28 20:24:16,798 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:16,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 360210551, now seen corresponding path program 2 times [2023-11-28 20:24:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:16,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67663614] [2023-11-28 20:24:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67663614] [2023-11-28 20:24:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67663614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:16,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106761218] [2023-11-28 20:24:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:16,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:16,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:16,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:24:16,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 584 transitions, 6612 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:16,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:16,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:24:16,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:21,320 INFO L124 PetriNetUnfolderBase]: 6467/14502 cut-off events. [2023-11-28 20:24:21,320 INFO L125 PetriNetUnfolderBase]: For 99247/99292 co-relation queries the response was YES. [2023-11-28 20:24:21,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61053 conditions, 14502 events. 6467/14502 cut-off events. For 99247/99292 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 112897 event pairs, 2746 based on Foata normal form. 58/14418 useless extension candidates. Maximal degree in co-relation 60900. Up to 6620 conditions per place. [2023-11-28 20:24:21,554 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 556 selfloop transitions, 8 changer transitions 0/652 dead transitions. [2023-11-28 20:24:21,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 652 transitions, 8630 flow [2023-11-28 20:24:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-11-28 20:24:21,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2023-11-28 20:24:21,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-11-28 20:24:21,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-11-28 20:24:21,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:21,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-11-28 20:24:21,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:21,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:21,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:21,556 INFO L175 Difference]: Start difference. First operand has 482 places, 584 transitions, 6612 flow. Second operand 3 states and 411 transitions. [2023-11-28 20:24:21,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 652 transitions, 8630 flow [2023-11-28 20:24:22,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 652 transitions, 8183 flow, removed 80 selfloop flow, removed 12 redundant places. [2023-11-28 20:24:22,625 INFO L231 Difference]: Finished difference. Result has 474 places, 585 transitions, 6271 flow [2023-11-28 20:24:22,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6231, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6271, PETRI_PLACES=474, PETRI_TRANSITIONS=585} [2023-11-28 20:24:22,626 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 299 predicate places. [2023-11-28 20:24:22,626 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 585 transitions, 6271 flow [2023-11-28 20:24:22,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:22,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:22,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-28 20:24:22,626 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:22,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2100566653, now seen corresponding path program 3 times [2023-11-28 20:24:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:22,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209142147] [2023-11-28 20:24:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:22,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209142147] [2023-11-28 20:24:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209142147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304848680] [2023-11-28 20:24:22,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:24:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:22,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:24:22,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:24:22,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:24:22,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 20:24:22,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:23,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:23,012 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 [2023-11-28 20:24:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:23,032 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-28 20:24:23,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 1 [2023-11-28 20:24:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:23,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:23,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304848680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:23,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-11-28 20:24:23,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665953107] [2023-11-28 20:24:23,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:23,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:24:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:24:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:24:23,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-28 20:24:23,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 585 transitions, 6271 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:23,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:23,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-28 20:24:23,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:28,918 INFO L124 PetriNetUnfolderBase]: 7759/16540 cut-off events. [2023-11-28 20:24:28,918 INFO L125 PetriNetUnfolderBase]: For 93355/93366 co-relation queries the response was YES. [2023-11-28 20:24:29,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67502 conditions, 16540 events. 7759/16540 cut-off events. For 93355/93366 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 126340 event pairs, 1162 based on Foata normal form. 38/16411 useless extension candidates. Maximal degree in co-relation 67355. Up to 6136 conditions per place. [2023-11-28 20:24:29,250 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 533 selfloop transitions, 108 changer transitions 0/711 dead transitions. [2023-11-28 20:24:29,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 711 transitions, 8674 flow [2023-11-28 20:24:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:24:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:24:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions. [2023-11-28 20:24:29,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7432432432432432 [2023-11-28 20:24:29,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 825 transitions. [2023-11-28 20:24:29,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 825 transitions. [2023-11-28 20:24:29,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:29,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 825 transitions. [2023-11-28 20:24:29,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:29,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:29,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:29,254 INFO L175 Difference]: Start difference. First operand has 474 places, 585 transitions, 6271 flow. Second operand 6 states and 825 transitions. [2023-11-28 20:24:29,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 711 transitions, 8674 flow [2023-11-28 20:24:30,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 711 transitions, 8547 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:30,499 INFO L231 Difference]: Finished difference. Result has 475 places, 585 transitions, 6462 flow [2023-11-28 20:24:30,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6462, PETRI_PLACES=475, PETRI_TRANSITIONS=585} [2023-11-28 20:24:30,500 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 300 predicate places. [2023-11-28 20:24:30,500 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 585 transitions, 6462 flow [2023-11-28 20:24:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:30,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:30,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:30,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:24:30,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:30,702 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:30,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1759636292, now seen corresponding path program 1 times [2023-11-28 20:24:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:30,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079464934] [2023-11-28 20:24:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:30,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:30,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:24:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:30,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:24:30,792 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 20:24:30,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (141 of 142 remaining) [2023-11-28 20:24:30,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 142 remaining) [2023-11-28 20:24:30,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (128 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 142 remaining) [2023-11-28 20:24:30,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (121 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (119 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 142 remaining) [2023-11-28 20:24:30,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 142 remaining) [2023-11-28 20:24:30,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (98 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 142 remaining) [2023-11-28 20:24:30,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 142 remaining) [2023-11-28 20:24:30,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 142 remaining) [2023-11-28 20:24:30,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (59 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 142 remaining) [2023-11-28 20:24:30,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (38 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 142 remaining) [2023-11-28 20:24:30,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 142 remaining) [2023-11-28 20:24:30,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 142 remaining) [2023-11-28 20:24:30,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 142 remaining) [2023-11-28 20:24:30,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 142 remaining) [2023-11-28 20:24:30,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 142 remaining) [2023-11-28 20:24:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-28 20:24:30,807 INFO L445 BasicCegarLoop]: Path program histogram: [10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:30,812 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:24:30,812 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:24:30,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-28 20:24:30,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-28 20:24:30,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-28 20:24:30,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-28 20:24:30,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-28 20:24:30,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-28 20:24:30,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-28 20:24:30,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-28 20:24:30,900 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-28 20:24:30,900 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-28 20:24:30,902 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-11-28 20:24:30,902 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated [2023-11-28 20:24:30,902 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated [2023-11-28 20:24:30,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-11-28 20:24:30,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-28 20:24:30,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-28 20:24:30,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:30 BasicIcfg [2023-11-28 20:24:30,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:24:30,916 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:24:30,916 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:24:30,917 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:24:30,917 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:21:22" (3/4) ... [2023-11-28 20:24:30,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-28 20:24:30,920 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:24:30,921 INFO L158 Benchmark]: Toolchain (without parser) took 190077.43ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 135.1MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-28 20:24:30,921 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:24:30,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.05ms. Allocated memory is still 163.6MB. Free memory was 134.4MB in the beginning and 103.7MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-28 20:24:30,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.60ms. Allocated memory is still 163.6MB. Free memory was 103.7MB in the beginning and 100.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:24:30,922 INFO L158 Benchmark]: Boogie Preprocessor took 75.14ms. Allocated memory is still 163.6MB. Free memory was 100.9MB in the beginning and 96.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:24:30,922 INFO L158 Benchmark]: RCFGBuilder took 974.67ms. Allocated memory is still 163.6MB. Free memory was 96.7MB in the beginning and 111.1MB in the end (delta: -14.4MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2023-11-28 20:24:30,922 INFO L158 Benchmark]: TraceAbstraction took 188380.84ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 111.1MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-28 20:24:30,922 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 5.1GB. Free memory is still 3.6GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:24:30,924 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.05ms. Allocated memory is still 163.6MB. Free memory was 134.4MB in the beginning and 103.7MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.60ms. Allocated memory is still 163.6MB. Free memory was 103.7MB in the beginning and 100.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.14ms. Allocated memory is still 163.6MB. Free memory was 100.9MB in the beginning and 96.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 974.67ms. Allocated memory is still 163.6MB. Free memory was 96.7MB in the beginning and 111.1MB in the end (delta: -14.4MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. * TraceAbstraction took 188380.84ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 111.1MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 5.1GB. Free memory is still 3.6GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(20)]; [L949] 0 int stored_elements[(20)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L955] 0 q->tail=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1063] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={10:0}, id2={9:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=11] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=11, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=11] [L1064] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={10:0}, id2={9:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=11] [L982] COND FALSE 1 !(q->tail == (20)) [L1036] 2 int i; [L1037] 2 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(20) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=11, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=11] [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=11] [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1018] 1 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=11] [L1018] COND TRUE 1 i<((20)-1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=11] [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L1037] 2 i++ VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1037] COND TRUE 2 i<(20) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=11] [L996] 2 q->amount-- [L997] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L997] COND FALSE 2 !(q->head == (20)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=11] [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] CALL 2 reach_error() [L21] COND FALSE 2 !(0) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L21] 2 __assert_fail ("0", "queue.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 301 locations, 142 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 188.1s, OverallIterations: 45, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 147.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37119 SdHoareTripleChecker+Valid, 85.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32426 mSDsluCounter, 139171 SdHoareTripleChecker+Invalid, 74.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137871 mSDsCounter, 533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167222 IncrementalHoareTripleChecker+Invalid, 167755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 533 mSolverCounterUnsat, 1300 mSDtfsCounter, 167222 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1056 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5055 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6612occurred in iteration=42, InterpolantAutomatonStates: 522, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 1978 NumberOfCodeBlocks, 1978 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1981 ConstructedInterpolants, 0 QuantifiedInterpolants, 29408 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 49 InterpolantComputations, 42 PerfectInterpolantSequences, 16/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-28 20:24:30,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:24:33,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:24:33,137 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-28 20:24:33,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:24:33,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:24:33,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:24:33,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:24:33,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:24:33,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:24:33,183 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:24:33,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:24:33,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:24:33,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:24:33,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:24:33,186 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:24:33,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:24:33,187 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:24:33,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:24:33,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:24:33,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:24:33,189 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-28 20:24:33,190 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-28 20:24:33,191 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-28 20:24:33,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:24:33,192 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 20:24:33,192 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-28 20:24:33,192 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-28 20:24:33,193 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:24:33,193 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:24:33,194 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:24:33,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:24:33,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:24:33,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:24:33,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:24:33,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:33,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:24:33,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:24:33,196 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-28 20:24:33,197 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-28 20:24:33,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:24:33,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:24:33,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:24:33,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:24:33,198 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-28 20:24:33,198 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_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-28 20:24:33,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:24:33,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:24:33,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:24:33,506 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:24:33,506 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:24:33,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue.i [2023-11-28 20:24:36,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:24:36,535 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:24:36,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/sv-benchmarks/c/pthread/queue.i [2023-11-28 20:24:36,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/50c2185e5/6d96c37ba3fc44e58ddec8d7bda354e2/FLAG6598c7848 [2023-11-28 20:24:36,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/data/50c2185e5/6d96c37ba3fc44e58ddec8d7bda354e2 [2023-11-28 20:24:36,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:24:36,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:24:36,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:36,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:24:36,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:24:36,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:36" (1/1) ... [2023-11-28 20:24:36,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b3afa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:36, skipping insertion in model container [2023-11-28 20:24:36,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:36" (1/1) ... [2023-11-28 20:24:36,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:24:37,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:37,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:24:37,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:37,332 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:24:37,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37 WrapperNode [2023-11-28 20:24:37,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:37,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:37,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:24:37,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:24:37,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,394 INFO L138 Inliner]: procedures = 279, calls = 74, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 263 [2023-11-28 20:24:37,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:37,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:24:37,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:24:37,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:24:37,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,434 INFO L175 MemorySlicer]: Split 55 memory accesses to 7 slices as follows [2, 8, 2, 5, 4, 2, 32]. 58 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 0, 5, 0, 0, 0]. The 20 writes are split as follows [0, 0, 1, 0, 3, 1, 15]. [2023-11-28 20:24:37,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:24:37,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:24:37,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:24:37,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:24:37,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (1/1) ... [2023-11-28 20:24:37,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:37,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:37,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:24:37,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:24:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-28 20:24:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-11-28 20:24:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-28 20:24:37,534 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-28 20:24:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-28 20:24:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-28 20:24:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:24:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:24:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-28 20:24:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-28 20:24:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-28 20:24:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-28 20:24:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-28 20:24:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-28 20:24:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-11-28 20:24:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-28 20:24:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-28 20:24:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-28 20:24:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-28 20:24:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-28 20:24:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-28 20:24:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-11-28 20:24:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-28 20:24:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-28 20:24:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-28 20:24:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-28 20:24:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:24:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:24:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:24:37,542 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:24:37,732 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:24:37,734 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:24:38,511 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:24:38,805 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:24:38,805 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 20:24:38,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:38 BoogieIcfgContainer [2023-11-28 20:24:38,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:24:38,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:24:38,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:24:38,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:24:38,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:36" (1/3) ... [2023-11-28 20:24:38,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117a7193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:38, skipping insertion in model container [2023-11-28 20:24:38,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:37" (2/3) ... [2023-11-28 20:24:38,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117a7193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:38, skipping insertion in model container [2023-11-28 20:24:38,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:38" (3/3) ... [2023-11-28 20:24:38,814 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-28 20:24:38,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:24:38,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-28 20:24:38,835 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:24:38,989 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:24:39,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 384 flow [2023-11-28 20:24:39,100 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-28 20:24:39,100 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 20:24:39,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 14/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 595 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-11-28 20:24:39,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 185 transitions, 384 flow [2023-11-28 20:24:39,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 376 flow [2023-11-28 20:24:39,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:24:39,132 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15d55ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:24:39,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations. [2023-11-28 20:24:39,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:24:39,136 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-28 20:24:39,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:24:39,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:39,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:24:39,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:39,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 22869, now seen corresponding path program 1 times [2023-11-28 20:24:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:39,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580470373] [2023-11-28 20:24:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:39,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:39,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-28 20:24:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:39,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:24:39,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:39,455 INFO L349 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2023-11-28 20:24:39,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 27 [2023-11-28 20:24:39,489 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-28 20:24:39,490 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-28 20:24:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:39,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:39,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:39,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580470373] [2023-11-28 20:24:39,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580470373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:39,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:39,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85611593] [2023-11-28 20:24:39,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:39,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:40,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:24:40,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:40,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:40,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:24:40,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:41,079 INFO L124 PetriNetUnfolderBase]: 1793/4846 cut-off events. [2023-11-28 20:24:41,079 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-28 20:24:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 4846 events. 1793/4846 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 38900 event pairs, 1432 based on Foata normal form. 186/3749 useless extension candidates. Maximal degree in co-relation 7584. Up to 2844 conditions per place. [2023-11-28 20:24:41,129 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-11-28 20:24:41,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 466 flow [2023-11-28 20:24:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-28 20:24:41,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7189189189189189 [2023-11-28 20:24:41,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-28 20:24:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-28 20:24:41,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:41,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-28 20:24:41,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:41,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:41,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:41,162 INFO L175 Difference]: Start difference. First operand has 175 places, 182 transitions, 376 flow. Second operand 3 states and 399 transitions. [2023-11-28 20:24:41,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 466 flow [2023-11-28 20:24:41,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 458 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:41,172 INFO L231 Difference]: Finished difference. Result has 163 places, 166 transitions, 340 flow [2023-11-28 20:24:41,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=163, PETRI_TRANSITIONS=166} [2023-11-28 20:24:41,178 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -12 predicate places. [2023-11-28 20:24:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 166 transitions, 340 flow [2023-11-28 20:24:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:41,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:41,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 20:24:41,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:24:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:41,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:41,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 22870, now seen corresponding path program 1 times [2023-11-28 20:24:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47502102] [2023-11-28 20:24:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:41,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:41,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:41,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:41,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-28 20:24:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:41,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:24:41,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:41,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:41,610 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 [2023-11-28 20:24:41,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:41,638 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-28 20:24:41,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 1 [2023-11-28 20:24:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:41,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:41,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47502102] [2023-11-28 20:24:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47502102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61779346] [2023-11-28 20:24:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:41,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:24:41,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 166 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:41,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:41,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:24:41,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:42,598 INFO L124 PetriNetUnfolderBase]: 1793/4843 cut-off events. [2023-11-28 20:24:42,598 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-28 20:24:42,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 4843 events. 1793/4843 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 38846 event pairs, 1432 based on Foata normal form. 3/3565 useless extension candidates. Maximal degree in co-relation 7711. Up to 2844 conditions per place. [2023-11-28 20:24:42,638 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-28 20:24:42,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 163 transitions, 456 flow [2023-11-28 20:24:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-28 20:24:42,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-28 20:24:42,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-28 20:24:42,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-28 20:24:42,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:42,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-28 20:24:42,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 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) [2023-11-28 20:24:42,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:42,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:42,648 INFO L175 Difference]: Start difference. First operand has 163 places, 166 transitions, 340 flow. Second operand 3 states and 394 transitions. [2023-11-28 20:24:42,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 163 transitions, 456 flow [2023-11-28 20:24:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:42,654 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 334 flow [2023-11-28 20:24:42,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2023-11-28 20:24:42,655 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -15 predicate places. [2023-11-28 20:24:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 334 flow [2023-11-28 20:24:42,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:42,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:42,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:24:42,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-28 20:24:42,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:42,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:42,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash 681987824, now seen corresponding path program 1 times [2023-11-28 20:24:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985072967] [2023-11-28 20:24:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:42,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:42,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:42,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-28 20:24:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:42,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:24:42,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:42,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:42,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985072967] [2023-11-28 20:24:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985072967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:42,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060450882] [2023-11-28 20:24:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:24:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:24:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:24:43,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:24:43,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:43,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:43,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:24:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:44,147 INFO L124 PetriNetUnfolderBase]: 1793/4841 cut-off events. [2023-11-28 20:24:44,148 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:24:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 4841 events. 1793/4841 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 38846 event pairs, 1432 based on Foata normal form. 0/3563 useless extension candidates. Maximal degree in co-relation 7710. Up to 2841 conditions per place. [2023-11-28 20:24:44,228 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 60 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2023-11-28 20:24:44,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 161 transitions, 458 flow [2023-11-28 20:24:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-11-28 20:24:44,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551351351351351 [2023-11-28 20:24:44,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-11-28 20:24:44,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-11-28 20:24:44,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:44,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-11-28 20:24:44,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:44,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:44,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:44,238 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 334 flow. Second operand 5 states and 606 transitions. [2023-11-28 20:24:44,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 161 transitions, 458 flow [2023-11-28 20:24:44,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:44,243 INFO L231 Difference]: Finished difference. Result has 160 places, 161 transitions, 334 flow [2023-11-28 20:24:44,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=161} [2023-11-28 20:24:44,244 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -15 predicate places. [2023-11-28 20:24:44,244 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 161 transitions, 334 flow [2023-11-28 20:24:44,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:44,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:44,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:24:44,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-28 20:24:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:44,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:44,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 681987825, now seen corresponding path program 1 times [2023-11-28 20:24:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826033025] [2023-11-28 20:24:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:44,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:44,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:44,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-28 20:24:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:44,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:24:44,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:44,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:44,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826033025] [2023-11-28 20:24:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826033025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:44,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:44,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:24:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55433404] [2023-11-28 20:24:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:24:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:24:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:24:45,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:24:45,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 161 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:45,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:45,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:24:45,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:46,304 INFO L124 PetriNetUnfolderBase]: 1793/4839 cut-off events. [2023-11-28 20:24:46,305 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-28 20:24:46,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 4839 events. 1793/4839 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 38817 event pairs, 1432 based on Foata normal form. 2/3563 useless extension candidates. Maximal degree in co-relation 7701. Up to 2842 conditions per place. [2023-11-28 20:24:46,334 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2023-11-28 20:24:46,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 159 transitions, 456 flow [2023-11-28 20:24:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions. [2023-11-28 20:24:46,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654054054054054 [2023-11-28 20:24:46,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions. [2023-11-28 20:24:46,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions. [2023-11-28 20:24:46,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:46,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions. [2023-11-28 20:24:46,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:46,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:46,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:46,343 INFO L175 Difference]: Start difference. First operand has 160 places, 161 transitions, 334 flow. Second operand 5 states and 605 transitions. [2023-11-28 20:24:46,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 159 transitions, 456 flow [2023-11-28 20:24:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 159 transitions, 448 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:46,347 INFO L231 Difference]: Finished difference. Result has 158 places, 159 transitions, 328 flow [2023-11-28 20:24:46,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=158, PETRI_TRANSITIONS=159} [2023-11-28 20:24:46,348 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -17 predicate places. [2023-11-28 20:24:46,348 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 159 transitions, 328 flow [2023-11-28 20:24:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:46,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:46,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:46,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-28 20:24:46,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:46,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:46,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1904586669, now seen corresponding path program 1 times [2023-11-28 20:24:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327085523] [2023-11-28 20:24:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:46,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:46,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:46,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-28 20:24:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:46,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:24:46,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:46,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:46,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-28 20:24:46,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-28 20:24:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:46,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:46,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327085523] [2023-11-28 20:24:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327085523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:46,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:46,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:46,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944081220] [2023-11-28 20:24:46,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:46,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:46,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:46,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:24:47,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 159 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:47,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:47,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:24:47,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:47,563 INFO L124 PetriNetUnfolderBase]: 1793/4833 cut-off events. [2023-11-28 20:24:47,563 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-28 20:24:47,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4833 events. 1793/4833 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 38766 event pairs, 1432 based on Foata normal form. 486/4047 useless extension candidates. Maximal degree in co-relation 7698. Up to 2843 conditions per place. [2023-11-28 20:24:47,601 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-11-28 20:24:47,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 446 flow [2023-11-28 20:24:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-28 20:24:47,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135135135135136 [2023-11-28 20:24:47,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-28 20:24:47,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-28 20:24:47,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:47,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-28 20:24:47,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:47,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:47,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:47,610 INFO L175 Difference]: Start difference. First operand has 158 places, 159 transitions, 328 flow. Second operand 3 states and 396 transitions. [2023-11-28 20:24:47,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 446 flow [2023-11-28 20:24:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 441 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:24:47,615 INFO L231 Difference]: Finished difference. Result has 155 places, 157 transitions, 323 flow [2023-11-28 20:24:47,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=155, PETRI_TRANSITIONS=157} [2023-11-28 20:24:47,616 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -20 predicate places. [2023-11-28 20:24:47,617 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 157 transitions, 323 flow [2023-11-28 20:24:47,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:47,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:47,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:47,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-28 20:24:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:47,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:47,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1904586668, now seen corresponding path program 1 times [2023-11-28 20:24:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009467842] [2023-11-28 20:24:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:47,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-28 20:24:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:47,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:24:47,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:47,964 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-28 20:24:47,964 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 21 treesize of output 15 [2023-11-28 20:24:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:47,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:47,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009467842] [2023-11-28 20:24:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009467842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:47,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236361086] [2023-11-28 20:24:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:47,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:48,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-28 20:24:48,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:48,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:48,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-28 20:24:48,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:48,789 INFO L124 PetriNetUnfolderBase]: 2894/7257 cut-off events. [2023-11-28 20:24:48,789 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:24:48,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11729 conditions, 7257 events. 2894/7257 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 60880 event pairs, 2359 based on Foata normal form. 0/5414 useless extension candidates. Maximal degree in co-relation 11719. Up to 4435 conditions per place. [2023-11-28 20:24:48,836 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 61 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2023-11-28 20:24:48,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 155 transitions, 445 flow [2023-11-28 20:24:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-28 20:24:48,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-28 20:24:48,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-28 20:24:48,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-28 20:24:48,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:48,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-28 20:24:48,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:48,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:48,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:48,843 INFO L175 Difference]: Start difference. First operand has 155 places, 157 transitions, 323 flow. Second operand 3 states and 392 transitions. [2023-11-28 20:24:48,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 155 transitions, 445 flow [2023-11-28 20:24:48,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 155 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:48,847 INFO L231 Difference]: Finished difference. Result has 153 places, 155 transitions, 319 flow [2023-11-28 20:24:48,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=153, PETRI_TRANSITIONS=155} [2023-11-28 20:24:48,848 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -22 predicate places. [2023-11-28 20:24:48,849 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 155 transitions, 319 flow [2023-11-28 20:24:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:48,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:48,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:48,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-28 20:24:49,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:49,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:49,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1270585441, now seen corresponding path program 1 times [2023-11-28 20:24:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284450264] [2023-11-28 20:24:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:49,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:49,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-28 20:24:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:49,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:24:49,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:49,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-28 20:24:49,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:49,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 1 [2023-11-28 20:24:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:49,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:49,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284450264] [2023-11-28 20:24:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284450264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:49,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:49,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133659117] [2023-11-28 20:24:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:49,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:49,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:24:49,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 155 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:49,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:49,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:24:49,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:49,944 INFO L124 PetriNetUnfolderBase]: 1793/4809 cut-off events. [2023-11-28 20:24:49,944 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:24:49,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 4809 events. 1793/4809 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 38453 event pairs, 1432 based on Foata normal form. 45/3606 useless extension candidates. Maximal degree in co-relation 7679. Up to 2843 conditions per place. [2023-11-28 20:24:49,963 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 59 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2023-11-28 20:24:49,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 153 transitions, 437 flow [2023-11-28 20:24:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-28 20:24:49,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135135135135136 [2023-11-28 20:24:49,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-28 20:24:49,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-28 20:24:49,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:49,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-28 20:24:49,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:49,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:49,968 INFO L175 Difference]: Start difference. First operand has 153 places, 155 transitions, 319 flow. Second operand 3 states and 396 transitions. [2023-11-28 20:24:49,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 153 transitions, 437 flow [2023-11-28 20:24:49,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 153 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:49,972 INFO L231 Difference]: Finished difference. Result has 151 places, 153 transitions, 315 flow [2023-11-28 20:24:49,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=151, PETRI_TRANSITIONS=153} [2023-11-28 20:24:49,973 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -24 predicate places. [2023-11-28 20:24:49,974 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 315 flow [2023-11-28 20:24:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:49,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:49,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:49,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-28 20:24:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:50,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:50,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1270585442, now seen corresponding path program 1 times [2023-11-28 20:24:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767526368] [2023-11-28 20:24:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:50,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:50,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-28 20:24:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:50,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:24:50,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:50,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-28 20:24:50,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:24:50,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-28 20:24:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:50,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:50,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767526368] [2023-11-28 20:24:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767526368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:24:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266776730] [2023-11-28 20:24:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:50,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-28 20:24:50,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 153 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:50,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:50,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-28 20:24:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:50,889 INFO L124 PetriNetUnfolderBase]: 1845/4918 cut-off events. [2023-11-28 20:24:50,890 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-28 20:24:50,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 4918 events. 1845/4918 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 39199 event pairs, 1476 based on Foata normal form. 0/3658 useless extension candidates. Maximal degree in co-relation 7886. Up to 2941 conditions per place. [2023-11-28 20:24:50,906 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 61 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-11-28 20:24:50,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 151 transitions, 437 flow [2023-11-28 20:24:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-28 20:24:50,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-28 20:24:50,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-28 20:24:50,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-28 20:24:50,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:50,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-28 20:24:50,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:50,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:50,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:50,911 INFO L175 Difference]: Start difference. First operand has 151 places, 153 transitions, 315 flow. Second operand 3 states and 392 transitions. [2023-11-28 20:24:50,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 151 transitions, 437 flow [2023-11-28 20:24:50,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:50,914 INFO L231 Difference]: Finished difference. Result has 149 places, 151 transitions, 311 flow [2023-11-28 20:24:50,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=149, PETRI_TRANSITIONS=151} [2023-11-28 20:24:50,914 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -26 predicate places. [2023-11-28 20:24:50,915 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 151 transitions, 311 flow [2023-11-28 20:24:50,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:50,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:50,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:50,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-28 20:24:51,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:51,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:51,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1259707573, now seen corresponding path program 1 times [2023-11-28 20:24:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471566399] [2023-11-28 20:24:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:51,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:51,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-28 20:24:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:51,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:24:51,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:51,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:51,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471566399] [2023-11-28 20:24:51,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471566399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:51,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938191513] [2023-11-28 20:24:51,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:51,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:24:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:24:51,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:24:51,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 185 [2023-11-28 20:24:51,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 151 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:51,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:51,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 185 [2023-11-28 20:24:51,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:52,189 INFO L124 PetriNetUnfolderBase]: 2130/4710 cut-off events. [2023-11-28 20:24:52,189 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-28 20:24:52,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 4710 events. 2130/4710 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 33516 event pairs, 751 based on Foata normal form. 0/4128 useless extension candidates. Maximal degree in co-relation 8139. Up to 1928 conditions per place. [2023-11-28 20:24:52,208 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 82 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2023-11-28 20:24:52,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 155 transitions, 498 flow [2023-11-28 20:24:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2023-11-28 20:24:52,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-11-28 20:24:52,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2023-11-28 20:24:52,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2023-11-28 20:24:52,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:52,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2023-11-28 20:24:52,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:52,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:52,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:52,216 INFO L175 Difference]: Start difference. First operand has 149 places, 151 transitions, 311 flow. Second operand 5 states and 550 transitions. [2023-11-28 20:24:52,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 155 transitions, 498 flow [2023-11-28 20:24:52,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 155 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:52,220 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2023-11-28 20:24:52,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2023-11-28 20:24:52,221 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -40 predicate places. [2023-11-28 20:24:52,221 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2023-11-28 20:24:52,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:52,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:52,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:52,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-28 20:24:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:52,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:52,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1259707572, now seen corresponding path program 1 times [2023-11-28 20:24:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22959284] [2023-11-28 20:24:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:52,425 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:52,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-28 20:24:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:52,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:24:52,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:52,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:52,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:52,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22959284] [2023-11-28 20:24:52,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22959284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:52,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:52,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:24:52,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398894151] [2023-11-28 20:24:52,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:52,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:24:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:24:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:24:53,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 185 [2023-11-28 20:24:53,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:53,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:53,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 185 [2023-11-28 20:24:53,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:54,268 INFO L124 PetriNetUnfolderBase]: 1794/4026 cut-off events. [2023-11-28 20:24:54,268 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-28 20:24:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 4026 events. 1794/4026 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 27949 event pairs, 739 based on Foata normal form. 216/3686 useless extension candidates. Maximal degree in co-relation 7039. Up to 1470 conditions per place. [2023-11-28 20:24:54,284 INFO L140 encePairwiseOnDemand]: 169/185 looper letters, 77 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2023-11-28 20:24:54,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 476 flow [2023-11-28 20:24:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 593 transitions. [2023-11-28 20:24:54,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410810810810811 [2023-11-28 20:24:54,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 593 transitions. [2023-11-28 20:24:54,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 593 transitions. [2023-11-28 20:24:54,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:54,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 593 transitions. [2023-11-28 20:24:54,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:54,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:54,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:54,291 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 5 states and 593 transitions. [2023-11-28 20:24:54,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 476 flow [2023-11-28 20:24:54,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 145 transitions, 462 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:54,295 INFO L231 Difference]: Finished difference. Result has 125 places, 125 transitions, 267 flow [2023-11-28 20:24:54,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2023-11-28 20:24:54,296 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-28 20:24:54,296 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 267 flow [2023-11-28 20:24:54,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:54,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:54,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:54,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-28 20:24:54,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:54,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:54,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash -396228284, now seen corresponding path program 1 times [2023-11-28 20:24:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:54,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125702607] [2023-11-28 20:24:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:54,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:54,499 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:54,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-28 20:24:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:54,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 20:24:54,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:54,660 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 11 treesize of output 7 [2023-11-28 20:24:54,685 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 19 treesize of output 18 [2023-11-28 20:24:54,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:24:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:54,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:54,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125702607] [2023-11-28 20:24:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125702607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:54,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:24:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638977970] [2023-11-28 20:24:54,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:24:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:24:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:24:56,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 185 [2023-11-28 20:24:56,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:56,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:56,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 185 [2023-11-28 20:24:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:57,042 INFO L124 PetriNetUnfolderBase]: 2396/5291 cut-off events. [2023-11-28 20:24:57,042 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-28 20:24:57,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9296 conditions, 5291 events. 2396/5291 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 38312 event pairs, 608 based on Foata normal form. 0/4365 useless extension candidates. Maximal degree in co-relation 9280. Up to 3459 conditions per place. [2023-11-28 20:24:57,064 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 121 selfloop transitions, 10 changer transitions 0/187 dead transitions. [2023-11-28 20:24:57,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 187 transitions, 658 flow [2023-11-28 20:24:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:24:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:24:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 798 transitions. [2023-11-28 20:24:57,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2023-11-28 20:24:57,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 798 transitions. [2023-11-28 20:24:57,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 798 transitions. [2023-11-28 20:24:57,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:57,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 798 transitions. [2023-11-28 20:24:57,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:57,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:57,075 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:57,075 INFO L175 Difference]: Start difference. First operand has 125 places, 125 transitions, 267 flow. Second operand 7 states and 798 transitions. [2023-11-28 20:24:57,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 187 transitions, 658 flow [2023-11-28 20:24:57,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 187 transitions, 644 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:57,081 INFO L231 Difference]: Finished difference. Result has 131 places, 134 transitions, 322 flow [2023-11-28 20:24:57,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=131, PETRI_TRANSITIONS=134} [2023-11-28 20:24:57,082 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -44 predicate places. [2023-11-28 20:24:57,082 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 134 transitions, 322 flow [2023-11-28 20:24:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:57,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:57,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:57,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-28 20:24:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:57,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:57,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash 601825964, now seen corresponding path program 1 times [2023-11-28 20:24:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:57,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098843775] [2023-11-28 20:24:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:57,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:57,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:57,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-28 20:24:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:57,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:24:57,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:57,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:57,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098843775] [2023-11-28 20:24:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098843775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103940341] [2023-11-28 20:24:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:57,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:24:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:24:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:24:58,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 185 [2023-11-28 20:24:58,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 134 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:58,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:58,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 185 [2023-11-28 20:24:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:58,720 INFO L124 PetriNetUnfolderBase]: 1981/4505 cut-off events. [2023-11-28 20:24:58,720 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2023-11-28 20:24:58,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8068 conditions, 4505 events. 1981/4505 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 32468 event pairs, 831 based on Foata normal form. 48/3803 useless extension candidates. Maximal degree in co-relation 8049. Up to 1569 conditions per place. [2023-11-28 20:24:58,740 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 82 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2023-11-28 20:24:58,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 150 transitions, 535 flow [2023-11-28 20:24:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2023-11-28 20:24:58,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2023-11-28 20:24:58,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2023-11-28 20:24:58,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2023-11-28 20:24:58,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:58,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2023-11-28 20:24:58,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:58,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:58,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:58,748 INFO L175 Difference]: Start difference. First operand has 131 places, 134 transitions, 322 flow. Second operand 5 states and 580 transitions. [2023-11-28 20:24:58,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 150 transitions, 535 flow [2023-11-28 20:24:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 150 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:24:58,752 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 326 flow [2023-11-28 20:24:58,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2023-11-28 20:24:58,753 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -45 predicate places. [2023-11-28 20:24:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 326 flow [2023-11-28 20:24:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:58,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:58,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:58,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-28 20:24:58,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:58,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:58,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1312270746, now seen corresponding path program 1 times [2023-11-28 20:24:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368201927] [2023-11-28 20:24:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:58,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:58,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:58,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:58,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-28 20:24:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:59,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:24:59,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:59,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:59,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:24:59,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368201927] [2023-11-28 20:24:59,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368201927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:59,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010018688] [2023-11-28 20:24:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:24:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:59,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:24:59,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:59,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:59,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:24:59,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:59,465 INFO L124 PetriNetUnfolderBase]: 1446/3390 cut-off events. [2023-11-28 20:24:59,466 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-11-28 20:24:59,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 3390 events. 1446/3390 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 21229 event pairs, 781 based on Foata normal form. 0/2829 useless extension candidates. Maximal degree in co-relation 6032. Up to 1225 conditions per place. [2023-11-28 20:24:59,479 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 84 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2023-11-28 20:24:59,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 512 flow [2023-11-28 20:24:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-11-28 20:24:59,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657657657657657 [2023-11-28 20:24:59,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-11-28 20:24:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-11-28 20:24:59,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:59,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-11-28 20:24:59,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:59,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:59,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:59,483 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 326 flow. Second operand 3 states and 425 transitions. [2023-11-28 20:24:59,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 512 flow [2023-11-28 20:24:59,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 476 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-28 20:24:59,487 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 271 flow [2023-11-28 20:24:59,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2023-11-28 20:24:59,487 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -54 predicate places. [2023-11-28 20:24:59,488 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 271 flow [2023-11-28 20:24:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:24:59,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:59,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:59,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-28 20:24:59,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:59,689 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:24:59,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -745519053, now seen corresponding path program 1 times [2023-11-28 20:24:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:24:59,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910206298] [2023-11-28 20:24:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:59,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:24:59,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:24:59,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:24:59,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-28 20:24:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:59,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 20:24:59,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:59,855 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 13 treesize of output 9 [2023-11-28 20:24:59,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-28 20:25:00,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:00,025 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 34 treesize of output 25 [2023-11-28 20:25:00,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:00,047 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 38 treesize of output 16 [2023-11-28 20:25:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:00,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:00,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910206298] [2023-11-28 20:25:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910206298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:00,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:25:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926310347] [2023-11-28 20:25:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:25:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:25:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:25:01,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:25:01,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 271 flow. Second operand has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:01,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:01,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:25:01,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:02,377 INFO L124 PetriNetUnfolderBase]: 1653/3798 cut-off events. [2023-11-28 20:25:02,378 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-28 20:25:02,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 3798 events. 1653/3798 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24312 event pairs, 404 based on Foata normal form. 0/3183 useless extension candidates. Maximal degree in co-relation 6718. Up to 2373 conditions per place. [2023-11-28 20:25:02,392 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 107 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2023-11-28 20:25:02,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 168 transitions, 601 flow [2023-11-28 20:25:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:25:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 20:25:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1061 transitions. [2023-11-28 20:25:02,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372372372372372 [2023-11-28 20:25:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1061 transitions. [2023-11-28 20:25:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1061 transitions. [2023-11-28 20:25:02,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:02,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1061 transitions. [2023-11-28 20:25:02,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.88888888888889) internal successors, (1061), 9 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:02,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:02,401 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:02,401 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 271 flow. Second operand 9 states and 1061 transitions. [2023-11-28 20:25:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 168 transitions, 601 flow [2023-11-28 20:25:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 168 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:02,405 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 277 flow [2023-11-28 20:25:02,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=277, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2023-11-28 20:25:02,406 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -49 predicate places. [2023-11-28 20:25:02,406 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 277 flow [2023-11-28 20:25:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:02,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:02,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:02,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-28 20:25:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:02,607 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:02,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1602922029, now seen corresponding path program 1 times [2023-11-28 20:25:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:02,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055227276] [2023-11-28 20:25:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:02,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:02,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:02,609 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:02,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-28 20:25:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:02,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:25:02,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:02,778 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-28 20:25:02,778 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 20 [2023-11-28 20:25:02,809 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-28 20:25:02,810 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 1 case distinctions, treesize of input 19 treesize of output 24 [2023-11-28 20:25:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:03,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:03,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:03,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055227276] [2023-11-28 20:25:03,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055227276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:03,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:03,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865713755] [2023-11-28 20:25:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:03,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-28 20:25:03,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:03,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:03,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-28 20:25:03,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:04,441 INFO L124 PetriNetUnfolderBase]: 2274/5033 cut-off events. [2023-11-28 20:25:04,441 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-28 20:25:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8905 conditions, 5033 events. 2274/5033 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 33684 event pairs, 1834 based on Foata normal form. 73/4376 useless extension candidates. Maximal degree in co-relation 8900. Up to 3538 conditions per place. [2023-11-28 20:25:04,459 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-11-28 20:25:04,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 117 transitions, 399 flow [2023-11-28 20:25:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-11-28 20:25:04,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6972972972972973 [2023-11-28 20:25:04,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-11-28 20:25:04,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-11-28 20:25:04,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:04,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-11-28 20:25:04,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,464 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 277 flow. Second operand 3 states and 387 transitions. [2023-11-28 20:25:04,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 117 transitions, 399 flow [2023-11-28 20:25:04,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 381 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 20:25:04,467 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 257 flow [2023-11-28 20:25:04,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-11-28 20:25:04,468 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-28 20:25:04,468 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 257 flow [2023-11-28 20:25:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:04,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-28 20:25:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:04,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:04,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1602922028, now seen corresponding path program 1 times [2023-11-28 20:25:04,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:04,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507110486] [2023-11-28 20:25:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:04,671 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:04,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-28 20:25:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:04,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:25:04,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:04,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:04,836 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 12 treesize of output 14 [2023-11-28 20:25:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:04,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-28 20:25:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:04,861 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-28 20:25:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2023-11-28 20:25:04,873 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 20:25:04,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-28 20:25:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:05,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:05,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507110486] [2023-11-28 20:25:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507110486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:25:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395829083] [2023-11-28 20:25:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:25:05,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:05,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:05,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:25:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:06,228 INFO L124 PetriNetUnfolderBase]: 1381/3298 cut-off events. [2023-11-28 20:25:06,228 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-28 20:25:06,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 3298 events. 1381/3298 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20965 event pairs, 1086 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 5699. Up to 2233 conditions per place. [2023-11-28 20:25:06,239 INFO L140 encePairwiseOnDemand]: 183/185 looper letters, 60 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-28 20:25:06,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 116 transitions, 377 flow [2023-11-28 20:25:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-28 20:25:06,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153153153153153 [2023-11-28 20:25:06,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-28 20:25:06,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-28 20:25:06,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:06,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-28 20:25:06,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:06,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:06,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:06,245 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 257 flow. Second operand 3 states and 397 transitions. [2023-11-28 20:25:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 116 transitions, 377 flow [2023-11-28 20:25:06,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:06,248 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 253 flow [2023-11-28 20:25:06,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2023-11-28 20:25:06,249 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-28 20:25:06,249 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 253 flow [2023-11-28 20:25:06,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:06,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:06,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:06,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:06,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:06,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:06,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1849025593, now seen corresponding path program 1 times [2023-11-28 20:25:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:06,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184086527] [2023-11-28 20:25:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:06,453 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:06,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-28 20:25:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:06,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:25:06,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:06,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:06,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184086527] [2023-11-28 20:25:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184086527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411188834] [2023-11-28 20:25:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:06,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:06,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:25:06,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:06,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:06,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:25:06,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:07,446 INFO L124 PetriNetUnfolderBase]: 1398/3291 cut-off events. [2023-11-28 20:25:07,446 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-28 20:25:07,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5727 conditions, 3291 events. 1398/3291 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20810 event pairs, 1071 based on Foata normal form. 0/2810 useless extension candidates. Maximal degree in co-relation 5722. Up to 2201 conditions per place. [2023-11-28 20:25:07,457 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 67 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2023-11-28 20:25:07,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 410 flow [2023-11-28 20:25:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 613 transitions. [2023-11-28 20:25:07,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6627027027027027 [2023-11-28 20:25:07,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 613 transitions. [2023-11-28 20:25:07,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 613 transitions. [2023-11-28 20:25:07,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:07,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 613 transitions. [2023-11-28 20:25:07,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:07,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:07,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:07,463 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 253 flow. Second operand 5 states and 613 transitions. [2023-11-28 20:25:07,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 410 flow [2023-11-28 20:25:07,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:25:07,466 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 258 flow [2023-11-28 20:25:07,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2023-11-28 20:25:07,466 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-28 20:25:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 258 flow [2023-11-28 20:25:07,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:07,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:07,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:07,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-28 20:25:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:07,667 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1849025594, now seen corresponding path program 1 times [2023-11-28 20:25:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612011815] [2023-11-28 20:25:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:07,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:07,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:07,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:07,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-28 20:25:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:07,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:25:07,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:07,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:07,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612011815] [2023-11-28 20:25:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612011815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:07,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:07,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591569047] [2023-11-28 20:25:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:08,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-28 20:25:08,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:08,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:08,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-28 20:25:08,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:09,286 INFO L124 PetriNetUnfolderBase]: 1381/3250 cut-off events. [2023-11-28 20:25:09,286 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-28 20:25:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5684 conditions, 3250 events. 1381/3250 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20491 event pairs, 1071 based on Foata normal form. 24/2793 useless extension candidates. Maximal degree in co-relation 5679. Up to 2203 conditions per place. [2023-11-28 20:25:09,299 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 67 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-11-28 20:25:09,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 413 flow [2023-11-28 20:25:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2023-11-28 20:25:09,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616216216216216 [2023-11-28 20:25:09,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2023-11-28 20:25:09,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2023-11-28 20:25:09,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:09,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2023-11-28 20:25:09,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:09,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:09,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:09,305 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 258 flow. Second operand 5 states and 612 transitions. [2023-11-28 20:25:09,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 413 flow [2023-11-28 20:25:09,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 403 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:09,308 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 252 flow [2023-11-28 20:25:09,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2023-11-28 20:25:09,308 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-28 20:25:09,308 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 252 flow [2023-11-28 20:25:09,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:09,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:09,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:09,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-28 20:25:09,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:09,509 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:09,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1485186680, now seen corresponding path program 1 times [2023-11-28 20:25:09,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:09,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996561961] [2023-11-28 20:25:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:09,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:09,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:09,511 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:09,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-28 20:25:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:09,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:09,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:09,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:09,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996561961] [2023-11-28 20:25:09,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996561961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:09,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729222350] [2023-11-28 20:25:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:09,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:25:09,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:09,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:09,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:25:09,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:10,041 INFO L124 PetriNetUnfolderBase]: 1369/3238 cut-off events. [2023-11-28 20:25:10,042 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-28 20:25:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 3238 events. 1369/3238 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20492 event pairs, 1071 based on Foata normal form. 0/2769 useless extension candidates. Maximal degree in co-relation 5651. Up to 2193 conditions per place. [2023-11-28 20:25:10,053 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 66 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-28 20:25:10,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 119 transitions, 403 flow [2023-11-28 20:25:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-11-28 20:25:10,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-28 20:25:10,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-11-28 20:25:10,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-11-28 20:25:10,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-11-28 20:25:10,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:10,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:10,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:10,057 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 252 flow. Second operand 3 states and 407 transitions. [2023-11-28 20:25:10,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 119 transitions, 403 flow [2023-11-28 20:25:10,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 119 transitions, 395 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:10,060 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 246 flow [2023-11-28 20:25:10,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2023-11-28 20:25:10,061 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -62 predicate places. [2023-11-28 20:25:10,061 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 246 flow [2023-11-28 20:25:10,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:10,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:10,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-28 20:25:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:10,262 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:10,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -843077614, now seen corresponding path program 1 times [2023-11-28 20:25:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:10,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589695040] [2023-11-28 20:25:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:10,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:10,264 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:10,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-28 20:25:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:10,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-28 20:25:10,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:10,454 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 11 treesize of output 7 [2023-11-28 20:25:10,476 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 19 treesize of output 18 [2023-11-28 20:25:10,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:10,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:25:10,714 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:25:10,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 49 treesize of output 49 [2023-11-28 20:25:10,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-28 20:25:10,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:10,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-28 20:25:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:10,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:10,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:10,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589695040] [2023-11-28 20:25:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589695040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:10,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:10,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-28 20:25:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282745951] [2023-11-28 20:25:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:25:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:25:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:25:12,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:25:12,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 246 flow. Second operand has 14 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:12,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:12,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:25:12,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:14,092 INFO L124 PetriNetUnfolderBase]: 1623/3518 cut-off events. [2023-11-28 20:25:14,092 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-28 20:25:14,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6376 conditions, 3518 events. 1623/3518 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21652 event pairs, 422 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 6371. Up to 1930 conditions per place. [2023-11-28 20:25:14,105 INFO L140 encePairwiseOnDemand]: 171/185 looper letters, 135 selfloop transitions, 13 changer transitions 0/189 dead transitions. [2023-11-28 20:25:14,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 189 transitions, 709 flow [2023-11-28 20:25:14,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:25:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:25:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1408 transitions. [2023-11-28 20:25:14,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6342342342342342 [2023-11-28 20:25:14,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1408 transitions. [2023-11-28 20:25:14,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1408 transitions. [2023-11-28 20:25:14,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:14,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1408 transitions. [2023-11-28 20:25:14,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.33333333333333) internal successors, (1408), 12 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:14,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:14,115 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:14,116 INFO L175 Difference]: Start difference. First operand has 113 places, 111 transitions, 246 flow. Second operand 12 states and 1408 transitions. [2023-11-28 20:25:14,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 189 transitions, 709 flow [2023-11-28 20:25:14,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 189 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:14,119 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 268 flow [2023-11-28 20:25:14,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=268, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2023-11-28 20:25:14,119 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-28 20:25:14,119 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 268 flow [2023-11-28 20:25:14,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:14,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:14,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:14,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-28 20:25:14,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:14,321 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:14,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -921841115, now seen corresponding path program 1 times [2023-11-28 20:25:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:14,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077175467] [2023-11-28 20:25:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:14,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:14,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:14,323 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:14,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-28 20:25:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:14,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 20:25:14,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:14,536 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 11 treesize of output 7 [2023-11-28 20:25:14,556 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 19 treesize of output 18 [2023-11-28 20:25:14,714 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-28 20:25:14,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 39 [2023-11-28 20:25:14,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-28 20:25:14,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-28 20:25:14,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-28 20:25:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:14,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:14,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077175467] [2023-11-28 20:25:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077175467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:14,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 20:25:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449097806] [2023-11-28 20:25:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:25:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:25:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:16,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2023-11-28 20:25:16,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 268 flow. Second operand has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 12 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:16,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:16,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2023-11-28 20:25:16,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:18,390 INFO L124 PetriNetUnfolderBase]: 2426/5091 cut-off events. [2023-11-28 20:25:18,390 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-28 20:25:18,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9562 conditions, 5091 events. 2426/5091 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 34351 event pairs, 320 based on Foata normal form. 66/4654 useless extension candidates. Maximal degree in co-relation 9556. Up to 2053 conditions per place. [2023-11-28 20:25:18,409 INFO L140 encePairwiseOnDemand]: 169/185 looper letters, 159 selfloop transitions, 19 changer transitions 0/219 dead transitions. [2023-11-28 20:25:18,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 219 transitions, 872 flow [2023-11-28 20:25:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:25:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:25:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1305 transitions. [2023-11-28 20:25:18,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2023-11-28 20:25:18,414 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1305 transitions. [2023-11-28 20:25:18,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1305 transitions. [2023-11-28 20:25:18,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:18,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1305 transitions. [2023-11-28 20:25:18,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.75) internal successors, (1305), 12 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:18,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:18,421 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:18,421 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 268 flow. Second operand 12 states and 1305 transitions. [2023-11-28 20:25:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 219 transitions, 872 flow [2023-11-28 20:25:18,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 219 transitions, 850 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 20:25:18,425 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 341 flow [2023-11-28 20:25:18,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2023-11-28 20:25:18,426 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-28 20:25:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 341 flow [2023-11-28 20:25:18,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 12 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:18,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-28 20:25:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:18,627 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:18,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 821005485, now seen corresponding path program 1 times [2023-11-28 20:25:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067562700] [2023-11-28 20:25:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:18,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:18,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:18,629 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:18,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-28 20:25:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:18,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-28 20:25:18,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:18,864 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 13 treesize of output 9 [2023-11-28 20:25:18,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-28 20:25:19,052 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-28 20:25:19,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:19,083 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-11-28 20:25:19,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2023-11-28 20:25:19,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:19,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-28 20:25:19,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2023-11-28 20:25:19,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-28 20:25:19,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-28 20:25:19,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-28 20:25:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:19,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:19,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067562700] [2023-11-28 20:25:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067562700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:19,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 20:25:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674982750] [2023-11-28 20:25:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:19,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:25:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:25:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:25:21,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:25:21,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 341 flow. Second operand has 13 states, 13 states have (on average 106.6923076923077) internal successors, (1387), 13 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:21,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:21,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:25:21,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:23,296 INFO L124 PetriNetUnfolderBase]: 1827/3774 cut-off events. [2023-11-28 20:25:23,297 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-28 20:25:23,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 3774 events. 1827/3774 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22805 event pairs, 481 based on Foata normal form. 0/3404 useless extension candidates. Maximal degree in co-relation 7590. Up to 1982 conditions per place. [2023-11-28 20:25:23,313 INFO L140 encePairwiseOnDemand]: 165/185 looper letters, 158 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2023-11-28 20:25:23,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 217 transitions, 890 flow [2023-11-28 20:25:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:25:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 20:25:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1529 transitions. [2023-11-28 20:25:23,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357588357588357 [2023-11-28 20:25:23,315 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1529 transitions. [2023-11-28 20:25:23,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1529 transitions. [2023-11-28 20:25:23,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:23,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1529 transitions. [2023-11-28 20:25:23,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.61538461538461) internal successors, (1529), 13 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:23,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:23,320 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:23,320 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 341 flow. Second operand 13 states and 1529 transitions. [2023-11-28 20:25:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 217 transitions, 890 flow [2023-11-28 20:25:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 217 transitions, 860 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-28 20:25:23,326 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 348 flow [2023-11-28 20:25:23,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=348, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2023-11-28 20:25:23,327 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -47 predicate places. [2023-11-28 20:25:23,327 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 348 flow [2023-11-28 20:25:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.6923076923077) internal successors, (1387), 13 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:23,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:23,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:23,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-28 20:25:23,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:23,528 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:23,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -317557610, now seen corresponding path program 1 times [2023-11-28 20:25:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858246421] [2023-11-28 20:25:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:23,530 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:23,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-28 20:25:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:23,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 20:25:23,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:23,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:23,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-28 20:25:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 20:25:23,807 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 [2023-11-28 20:25:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:24,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:24,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858246421] [2023-11-28 20:25:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858246421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:24,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556583490] [2023-11-28 20:25:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:24,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:24,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:25:24,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:24,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:24,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:25:24,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:24,970 INFO L124 PetriNetUnfolderBase]: 1928/3862 cut-off events. [2023-11-28 20:25:24,970 INFO L125 PetriNetUnfolderBase]: For 647/649 co-relation queries the response was YES. [2023-11-28 20:25:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 3862 events. 1928/3862 cut-off events. For 647/649 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23033 event pairs, 1038 based on Foata normal form. 26/3687 useless extension candidates. Maximal degree in co-relation 8389. Up to 2632 conditions per place. [2023-11-28 20:25:24,986 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 96 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-11-28 20:25:24,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 148 transitions, 648 flow [2023-11-28 20:25:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:25:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 537 transitions. [2023-11-28 20:25:24,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7256756756756757 [2023-11-28 20:25:24,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 537 transitions. [2023-11-28 20:25:24,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 537 transitions. [2023-11-28 20:25:24,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:24,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 537 transitions. [2023-11-28 20:25:24,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:24,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:24,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:24,990 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 348 flow. Second operand 4 states and 537 transitions. [2023-11-28 20:25:24,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 148 transitions, 648 flow [2023-11-28 20:25:24,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 148 transitions, 621 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-28 20:25:24,995 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 340 flow [2023-11-28 20:25:24,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2023-11-28 20:25:24,996 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -52 predicate places. [2023-11-28 20:25:24,996 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 340 flow [2023-11-28 20:25:24,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:24,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:24,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:25,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-28 20:25:25,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:25,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:25,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1981456733, now seen corresponding path program 1 times [2023-11-28 20:25:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169318021] [2023-11-28 20:25:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:25,199 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:25,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-28 20:25:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:25,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:25,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:25,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:25,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169318021] [2023-11-28 20:25:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169318021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:25,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:25,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179109325] [2023-11-28 20:25:25,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:25,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:25,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:25:25,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:25,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:25:25,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:25,906 INFO L124 PetriNetUnfolderBase]: 1876/4150 cut-off events. [2023-11-28 20:25:25,906 INFO L125 PetriNetUnfolderBase]: For 525/543 co-relation queries the response was YES. [2023-11-28 20:25:25,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8558 conditions, 4150 events. 1876/4150 cut-off events. For 525/543 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 27413 event pairs, 953 based on Foata normal form. 34/3715 useless extension candidates. Maximal degree in co-relation 8546. Up to 1886 conditions per place. [2023-11-28 20:25:25,924 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 92 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2023-11-28 20:25:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 144 transitions, 610 flow [2023-11-28 20:25:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-11-28 20:25:25,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7585585585585586 [2023-11-28 20:25:25,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-11-28 20:25:25,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-11-28 20:25:25,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:25,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-11-28 20:25:25,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:25,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:25,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:25,928 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 340 flow. Second operand 3 states and 421 transitions. [2023-11-28 20:25:25,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 144 transitions, 610 flow [2023-11-28 20:25:25,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:25,933 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 353 flow [2023-11-28 20:25:25,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2023-11-28 20:25:25,933 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-28 20:25:25,933 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 353 flow [2023-11-28 20:25:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:25,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:25,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:25,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-28 20:25:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:26,134 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:26,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2135070884, now seen corresponding path program 1 times [2023-11-28 20:25:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488318689] [2023-11-28 20:25:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:26,136 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:26,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-28 20:25:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:26,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:26,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:26,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:26,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488318689] [2023-11-28 20:25:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488318689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212715882] [2023-11-28 20:25:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:26,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:26,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:25:26,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:26,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:26,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:25:26,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:26,721 INFO L124 PetriNetUnfolderBase]: 1164/2622 cut-off events. [2023-11-28 20:25:26,722 INFO L125 PetriNetUnfolderBase]: For 418/420 co-relation queries the response was YES. [2023-11-28 20:25:26,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2622 events. 1164/2622 cut-off events. For 418/420 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14851 event pairs, 721 based on Foata normal form. 42/2435 useless extension candidates. Maximal degree in co-relation 5382. Up to 1142 conditions per place. [2023-11-28 20:25:26,734 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 79 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-11-28 20:25:26,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 536 flow [2023-11-28 20:25:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-11-28 20:25:26,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2023-11-28 20:25:26,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-11-28 20:25:26,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-11-28 20:25:26,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:26,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-11-28 20:25:26,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:26,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:26,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:26,738 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 353 flow. Second operand 3 states and 411 transitions. [2023-11-28 20:25:26,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 536 flow [2023-11-28 20:25:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 130 transitions, 524 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:26,742 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 329 flow [2023-11-28 20:25:26,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2023-11-28 20:25:26,743 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-28 20:25:26,743 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 329 flow [2023-11-28 20:25:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:26,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:26,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:26,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-28 20:25:26,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:26,944 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:26,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1510962377, now seen corresponding path program 1 times [2023-11-28 20:25:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:26,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793888577] [2023-11-28 20:25:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:26,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:26,946 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:26,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-28 20:25:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:27,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:27,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:27,110 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 11 treesize of output 9 [2023-11-28 20:25:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:27,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:27,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793888577] [2023-11-28 20:25:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793888577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:27,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414731881] [2023-11-28 20:25:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:27,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:25:27,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:27,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:27,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:25:27,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:27,454 INFO L124 PetriNetUnfolderBase]: 746/1819 cut-off events. [2023-11-28 20:25:27,454 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2023-11-28 20:25:27,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 1819 events. 746/1819 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9046 event pairs, 141 based on Foata normal form. 102/1789 useless extension candidates. Maximal degree in co-relation 3746. Up to 988 conditions per place. [2023-11-28 20:25:27,461 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 70 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2023-11-28 20:25:27,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 515 flow [2023-11-28 20:25:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-11-28 20:25:27,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2023-11-28 20:25:27,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-11-28 20:25:27,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-11-28 20:25:27,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:27,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-11-28 20:25:27,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:27,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:27,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:27,464 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 329 flow. Second operand 3 states and 411 transitions. [2023-11-28 20:25:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 515 flow [2023-11-28 20:25:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:27,467 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 337 flow [2023-11-28 20:25:27,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2023-11-28 20:25:27,468 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-28 20:25:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 337 flow [2023-11-28 20:25:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:27,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-28 20:25:27,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:27,669 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:27,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:27,669 INFO L85 PathProgramCache]: Analyzing trace with hash -851052614, now seen corresponding path program 1 times [2023-11-28 20:25:27,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:27,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253710082] [2023-11-28 20:25:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:27,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:27,671 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:27,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-28 20:25:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:27,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:25:27,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:28,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:28,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:28,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253710082] [2023-11-28 20:25:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253710082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715519489] [2023-11-28 20:25:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:28,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:28,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:25:28,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:28,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:28,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:25:28,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:29,299 INFO L124 PetriNetUnfolderBase]: 741/1750 cut-off events. [2023-11-28 20:25:29,299 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2023-11-28 20:25:29,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1750 events. 741/1750 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8448 event pairs, 529 based on Foata normal form. 27/1688 useless extension candidates. Maximal degree in co-relation 3781. Up to 1166 conditions per place. [2023-11-28 20:25:29,306 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 67 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-11-28 20:25:29,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 114 transitions, 486 flow [2023-11-28 20:25:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-11-28 20:25:29,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421621621621622 [2023-11-28 20:25:29,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-11-28 20:25:29,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-11-28 20:25:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:29,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-11-28 20:25:29,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:29,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:29,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:29,310 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 337 flow. Second operand 5 states and 594 transitions. [2023-11-28 20:25:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 114 transitions, 486 flow [2023-11-28 20:25:29,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 114 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:25:29,313 INFO L231 Difference]: Finished difference. Result has 123 places, 109 transitions, 329 flow [2023-11-28 20:25:29,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=123, PETRI_TRANSITIONS=109} [2023-11-28 20:25:29,314 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -52 predicate places. [2023-11-28 20:25:29,314 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 109 transitions, 329 flow [2023-11-28 20:25:29,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:29,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:29,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:29,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-28 20:25:29,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:29,515 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:29,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 745943541, now seen corresponding path program 1 times [2023-11-28 20:25:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:29,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131703738] [2023-11-28 20:25:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:29,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:29,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:29,517 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:29,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-28 20:25:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:29,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:25:29,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:29,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:29,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131703738] [2023-11-28 20:25:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131703738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:29,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:29,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256252032] [2023-11-28 20:25:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:30,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 185 [2023-11-28 20:25:30,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 109 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:30,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:30,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 185 [2023-11-28 20:25:30,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:30,497 INFO L124 PetriNetUnfolderBase]: 774/1711 cut-off events. [2023-11-28 20:25:30,497 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2023-11-28 20:25:30,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1711 events. 774/1711 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7676 event pairs, 529 based on Foata normal form. 0/1676 useless extension candidates. Maximal degree in co-relation 3763. Up to 1163 conditions per place. [2023-11-28 20:25:30,504 INFO L140 encePairwiseOnDemand]: 172/185 looper letters, 69 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-11-28 20:25:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 478 flow [2023-11-28 20:25:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 575 transitions. [2023-11-28 20:25:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-28 20:25:30,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 575 transitions. [2023-11-28 20:25:30,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 575 transitions. [2023-11-28 20:25:30,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:30,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 575 transitions. [2023-11-28 20:25:30,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:30,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:30,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:30,508 INFO L175 Difference]: Start difference. First operand has 123 places, 109 transitions, 329 flow. Second operand 5 states and 575 transitions. [2023-11-28 20:25:30,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 478 flow [2023-11-28 20:25:30,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 106 transitions, 470 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:30,511 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 315 flow [2023-11-28 20:25:30,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2023-11-28 20:25:30,511 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-28 20:25:30,512 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 315 flow [2023-11-28 20:25:30,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:30,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:30,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:30,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-28 20:25:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:30,713 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:30,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1649414202, now seen corresponding path program 1 times [2023-11-28 20:25:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:30,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032061380] [2023-11-28 20:25:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:30,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:30,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:30,714 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:30,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-28 20:25:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:31,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-28 20:25:31,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:31,044 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 11 treesize of output 7 [2023-11-28 20:25:31,066 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 19 treesize of output 18 [2023-11-28 20:25:31,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:31,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:25:31,344 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:25:31,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 49 treesize of output 49 [2023-11-28 20:25:31,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-28 20:25:31,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:31,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-28 20:25:31,691 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-28 20:25:31,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 39 [2023-11-28 20:25:31,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-28 20:25:31,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:31,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-28 20:25:31,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-28 20:25:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:31,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:31,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032061380] [2023-11-28 20:25:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032061380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:31,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-28 20:25:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348150887] [2023-11-28 20:25:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 20:25:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 20:25:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:25:35,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 185 [2023-11-28 20:25:35,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 315 flow. Second operand has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:35,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:35,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 185 [2023-11-28 20:25:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:36,188 INFO L124 PetriNetUnfolderBase]: 989/2128 cut-off events. [2023-11-28 20:25:36,188 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2023-11-28 20:25:36,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 2128 events. 989/2128 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9305 event pairs, 210 based on Foata normal form. 0/2076 useless extension candidates. Maximal degree in co-relation 4675. Up to 671 conditions per place. [2023-11-28 20:25:36,196 INFO L140 encePairwiseOnDemand]: 166/185 looper letters, 146 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2023-11-28 20:25:36,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 192 transitions, 876 flow [2023-11-28 20:25:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:25:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 20:25:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1546 transitions. [2023-11-28 20:25:36,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969111969111969 [2023-11-28 20:25:36,198 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1546 transitions. [2023-11-28 20:25:36,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1546 transitions. [2023-11-28 20:25:36,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:36,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1546 transitions. [2023-11-28 20:25:36,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.42857142857143) internal successors, (1546), 14 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:36,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:36,203 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:36,203 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 315 flow. Second operand 14 states and 1546 transitions. [2023-11-28 20:25:36,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 192 transitions, 876 flow [2023-11-28 20:25:36,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 192 transitions, 862 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:36,207 INFO L231 Difference]: Finished difference. Result has 127 places, 106 transitions, 374 flow [2023-11-28 20:25:36,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=374, PETRI_PLACES=127, PETRI_TRANSITIONS=106} [2023-11-28 20:25:36,208 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -48 predicate places. [2023-11-28 20:25:36,208 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 106 transitions, 374 flow [2023-11-28 20:25:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:36,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:36,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:36,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-28 20:25:36,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:36,409 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:36,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1895180078, now seen corresponding path program 1 times [2023-11-28 20:25:36,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:36,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953532939] [2023-11-28 20:25:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:36,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:36,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:36,412 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-28 20:25:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:36,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 20:25:36,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:36,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:36,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953532939] [2023-11-28 20:25:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953532939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970435004] [2023-11-28 20:25:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:36,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:36,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:36,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:37,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-28 20:25:37,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 106 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:37,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:37,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-28 20:25:37,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:37,871 INFO L124 PetriNetUnfolderBase]: 903/2037 cut-off events. [2023-11-28 20:25:37,872 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-28 20:25:37,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 2037 events. 903/2037 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9185 event pairs, 613 based on Foata normal form. 0/1993 useless extension candidates. Maximal degree in co-relation 4605. Up to 1328 conditions per place. [2023-11-28 20:25:37,880 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 68 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2023-11-28 20:25:37,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 109 transitions, 533 flow [2023-11-28 20:25:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2023-11-28 20:25:37,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2023-11-28 20:25:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2023-11-28 20:25:37,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2023-11-28 20:25:37,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:37,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2023-11-28 20:25:37,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:37,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:37,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:37,883 INFO L175 Difference]: Start difference. First operand has 127 places, 106 transitions, 374 flow. Second operand 5 states and 580 transitions. [2023-11-28 20:25:37,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 109 transitions, 533 flow [2023-11-28 20:25:37,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 109 transitions, 506 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 20:25:37,887 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 353 flow [2023-11-28 20:25:37,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2023-11-28 20:25:37,888 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-28 20:25:37,888 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 353 flow [2023-11-28 20:25:37,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:37,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:37,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:37,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-28 20:25:38,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:38,089 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:38,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 129903851, now seen corresponding path program 1 times [2023-11-28 20:25:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:38,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130057961] [2023-11-28 20:25:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:38,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:38,091 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:38,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-28 20:25:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:38,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:38,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:25:38,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:38,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130057961] [2023-11-28 20:25:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130057961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488038354] [2023-11-28 20:25:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:38,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2023-11-28 20:25:38,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:38,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2023-11-28 20:25:38,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:38,736 INFO L124 PetriNetUnfolderBase]: 1279/2934 cut-off events. [2023-11-28 20:25:38,736 INFO L125 PetriNetUnfolderBase]: For 895/904 co-relation queries the response was YES. [2023-11-28 20:25:38,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6483 conditions, 2934 events. 1279/2934 cut-off events. For 895/904 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 15390 event pairs, 649 based on Foata normal form. 70/2922 useless extension candidates. Maximal degree in co-relation 6465. Up to 1641 conditions per place. [2023-11-28 20:25:38,747 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 118 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-11-28 20:25:38,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 157 transitions, 784 flow [2023-11-28 20:25:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-11-28 20:25:38,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8018018018018018 [2023-11-28 20:25:38,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-11-28 20:25:38,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-11-28 20:25:38,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:38,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-11-28 20:25:38,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,750 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 353 flow. Second operand 3 states and 445 transitions. [2023-11-28 20:25:38,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 157 transitions, 784 flow [2023-11-28 20:25:38,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 157 transitions, 770 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:38,755 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 355 flow [2023-11-28 20:25:38,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2023-11-28 20:25:38,755 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -57 predicate places. [2023-11-28 20:25:38,755 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 355 flow [2023-11-28 20:25:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:38,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:38,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:38,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:38,956 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:38,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash -865177252, now seen corresponding path program 1 times [2023-11-28 20:25:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:38,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646775714] [2023-11-28 20:25:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:38,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:38,958 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:38,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-28 20:25:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:39,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:39,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:39,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:39,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646775714] [2023-11-28 20:25:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646775714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:39,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309606210] [2023-11-28 20:25:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:39,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:39,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-28 20:25:39,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:39,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:39,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-28 20:25:39,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:40,404 INFO L124 PetriNetUnfolderBase]: 1291/2924 cut-off events. [2023-11-28 20:25:40,404 INFO L125 PetriNetUnfolderBase]: For 1294/1297 co-relation queries the response was YES. [2023-11-28 20:25:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7013 conditions, 2924 events. 1291/2924 cut-off events. For 1294/1297 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 15084 event pairs, 485 based on Foata normal form. 10/2868 useless extension candidates. Maximal degree in co-relation 6994. Up to 1318 conditions per place. [2023-11-28 20:25:40,417 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 163 selfloop transitions, 9 changer transitions 0/208 dead transitions. [2023-11-28 20:25:40,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 208 transitions, 1049 flow [2023-11-28 20:25:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:25:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 835 transitions. [2023-11-28 20:25:40,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2023-11-28 20:25:40,420 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 835 transitions. [2023-11-28 20:25:40,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 835 transitions. [2023-11-28 20:25:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 835 transitions. [2023-11-28 20:25:40,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:40,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:40,423 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:40,423 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 355 flow. Second operand 6 states and 835 transitions. [2023-11-28 20:25:40,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 208 transitions, 1049 flow [2023-11-28 20:25:40,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 208 transitions, 1045 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:25:40,431 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 399 flow [2023-11-28 20:25:40,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2023-11-28 20:25:40,431 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-28 20:25:40,432 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 399 flow [2023-11-28 20:25:40,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.16666666666667) internal successors, (709), 6 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:40,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:40,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:40,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-28 20:25:40,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:40,633 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:40,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1650016169, now seen corresponding path program 1 times [2023-11-28 20:25:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:40,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519575947] [2023-11-28 20:25:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:40,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:40,635 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:40,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-28 20:25:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:40,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-28 20:25:40,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:41,016 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 11 treesize of output 7 [2023-11-28 20:25:41,041 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 19 treesize of output 18 [2023-11-28 20:25:41,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:41,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:25:41,291 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:25:41,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 49 treesize of output 49 [2023-11-28 20:25:41,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-28 20:25:41,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:41,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-28 20:25:41,631 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-28 20:25:41,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 39 [2023-11-28 20:25:41,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-28 20:25:41,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:41,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-28 20:25:41,793 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 23 treesize of output 11 [2023-11-28 20:25:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:41,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:41,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519575947] [2023-11-28 20:25:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519575947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-28 20:25:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777359490] [2023-11-28 20:25:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 20:25:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 20:25:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:25:44,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 185 [2023-11-28 20:25:44,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 399 flow. Second operand has 16 states, 16 states have (on average 108.0625) internal successors, (1729), 16 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:44,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:44,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 185 [2023-11-28 20:25:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:45,413 INFO L124 PetriNetUnfolderBase]: 1353/2907 cut-off events. [2023-11-28 20:25:45,413 INFO L125 PetriNetUnfolderBase]: For 1961/1962 co-relation queries the response was YES. [2023-11-28 20:25:45,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 2907 events. 1353/2907 cut-off events. For 1961/1962 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 14092 event pairs, 226 based on Foata normal form. 0/2869 useless extension candidates. Maximal degree in co-relation 7521. Up to 865 conditions per place. [2023-11-28 20:25:45,426 INFO L140 encePairwiseOnDemand]: 167/185 looper letters, 166 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2023-11-28 20:25:45,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 1182 flow [2023-11-28 20:25:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:25:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 20:25:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1627 transitions. [2023-11-28 20:25:45,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6281853281853282 [2023-11-28 20:25:45,429 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1627 transitions. [2023-11-28 20:25:45,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1627 transitions. [2023-11-28 20:25:45,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:45,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1627 transitions. [2023-11-28 20:25:45,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.21428571428571) internal successors, (1627), 14 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:45,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:45,433 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:45,433 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 399 flow. Second operand 14 states and 1627 transitions. [2023-11-28 20:25:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 211 transitions, 1182 flow [2023-11-28 20:25:45,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 211 transitions, 1143 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 20:25:45,440 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 434 flow [2023-11-28 20:25:45,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=434, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2023-11-28 20:25:45,440 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -39 predicate places. [2023-11-28 20:25:45,440 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 434 flow [2023-11-28 20:25:45,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.0625) internal successors, (1729), 16 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:45,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:45,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:45,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:45,641 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:25:45,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1292709913, now seen corresponding path program 1 times [2023-11-28 20:25:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:25:45,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649264268] [2023-11-28 20:25:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:25:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:25:45,643 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:25:45,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-28 20:25:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:46,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:25:46,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:46,073 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 11 treesize of output 7 [2023-11-28 20:25:46,093 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 19 treesize of output 18 [2023-11-28 20:25:46,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:46,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:25:46,439 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:25:46,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:25:46,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:25:46,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:46,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:25:46,812 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 11 [2023-11-28 20:25:47,258 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:25:47,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:25:47,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:25:47,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:47,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:25:47,533 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 27 treesize of output 15 [2023-11-28 20:25:47,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:25:47,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:25:47,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:25:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:47,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:47,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:25:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649264268] [2023-11-28 20:25:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649264268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:25:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387199010] [2023-11-28 20:25:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:25:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:25:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:25:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:25:56,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:25:56,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 434 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:56,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:56,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:25:56,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:59,856 INFO L124 PetriNetUnfolderBase]: 1632/3529 cut-off events. [2023-11-28 20:25:59,856 INFO L125 PetriNetUnfolderBase]: For 2338/2340 co-relation queries the response was YES. [2023-11-28 20:25:59,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9494 conditions, 3529 events. 1632/3529 cut-off events. For 2338/2340 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18605 event pairs, 385 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 9471. Up to 2309 conditions per place. [2023-11-28 20:25:59,873 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 172 selfloop transitions, 46 changer transitions 0/245 dead transitions. [2023-11-28 20:25:59,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 245 transitions, 1415 flow [2023-11-28 20:25:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:25:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:25:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2903 transitions. [2023-11-28 20:25:59,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035343035343035 [2023-11-28 20:25:59,877 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2903 transitions. [2023-11-28 20:25:59,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2903 transitions. [2023-11-28 20:25:59,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:59,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2903 transitions. [2023-11-28 20:25:59,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.65384615384616) internal successors, (2903), 26 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:59,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:59,884 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:59,885 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 434 flow. Second operand 26 states and 2903 transitions. [2023-11-28 20:25:59,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 245 transitions, 1415 flow [2023-11-28 20:25:59,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 245 transitions, 1355 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-28 20:25:59,893 INFO L231 Difference]: Finished difference. Result has 167 places, 153 transitions, 841 flow [2023-11-28 20:25:59,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=841, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2023-11-28 20:25:59,893 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -8 predicate places. [2023-11-28 20:25:59,894 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 841 flow [2023-11-28 20:25:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:59,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:59,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:59,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-11-28 20:26:00,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:00,095 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:26:00,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash -314955171, now seen corresponding path program 2 times [2023-11-28 20:26:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:00,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455322115] [2023-11-28 20:26:00,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:26:00,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:00,097 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:26:00,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-28 20:26:00,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:26:00,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:00,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:26:00,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:00,517 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 11 treesize of output 7 [2023-11-28 20:26:00,541 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 19 treesize of output 18 [2023-11-28 20:26:00,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:00,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:26:00,957 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:26:00,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:26:01,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:26:01,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:01,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:26:01,360 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 11 [2023-11-28 20:26:01,818 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:26:01,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:26:01,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:26:02,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:02,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:26:02,087 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 27 treesize of output 15 [2023-11-28 20:26:02,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:02,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:26:02,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:26:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:02,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:02,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:02,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455322115] [2023-11-28 20:26:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455322115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:26:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416634478] [2023-11-28 20:26:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:02,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:26:10,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:26:10,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 841 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:26:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:14,236 INFO L124 PetriNetUnfolderBase]: 1880/4077 cut-off events. [2023-11-28 20:26:14,236 INFO L125 PetriNetUnfolderBase]: For 4943/4943 co-relation queries the response was YES. [2023-11-28 20:26:14,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12095 conditions, 4077 events. 1880/4077 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 22770 event pairs, 434 based on Foata normal form. 0/4023 useless extension candidates. Maximal degree in co-relation 12055. Up to 2741 conditions per place. [2023-11-28 20:26:14,263 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 210 selfloop transitions, 44 changer transitions 0/281 dead transitions. [2023-11-28 20:26:14,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 281 transitions, 1956 flow [2023-11-28 20:26:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:26:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:26:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2896 transitions. [2023-11-28 20:26:14,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020790020790021 [2023-11-28 20:26:14,301 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2896 transitions. [2023-11-28 20:26:14,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2896 transitions. [2023-11-28 20:26:14,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:14,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2896 transitions. [2023-11-28 20:26:14,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.38461538461539) internal successors, (2896), 26 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:14,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:14,311 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:14,311 INFO L175 Difference]: Start difference. First operand has 167 places, 153 transitions, 841 flow. Second operand 26 states and 2896 transitions. [2023-11-28 20:26:14,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 281 transitions, 1956 flow [2023-11-28 20:26:14,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 281 transitions, 1954 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:26:14,326 INFO L231 Difference]: Finished difference. Result has 206 places, 185 transitions, 1293 flow [2023-11-28 20:26:14,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1293, PETRI_PLACES=206, PETRI_TRANSITIONS=185} [2023-11-28 20:26:14,327 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 31 predicate places. [2023-11-28 20:26:14,327 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 185 transitions, 1293 flow [2023-11-28 20:26:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:14,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:14,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:14,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-28 20:26:14,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:14,528 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:26:14,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash 111507395, now seen corresponding path program 3 times [2023-11-28 20:26:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:14,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779134484] [2023-11-28 20:26:14,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:26:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:14,530 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:26:14,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-28 20:26:14,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-28 20:26:14,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:14,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:26:14,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:14,948 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 11 treesize of output 7 [2023-11-28 20:26:14,976 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 19 treesize of output 18 [2023-11-28 20:26:15,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:15,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:26:15,292 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:26:15,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:26:15,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:26:15,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:15,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:26:15,753 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 11 [2023-11-28 20:26:16,224 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:26:16,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:26:16,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:26:16,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:16,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:26:16,491 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 27 treesize of output 15 [2023-11-28 20:26:16,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:16,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:26:16,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:26:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:16,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:16,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779134484] [2023-11-28 20:26:16,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779134484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:16,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:26:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562171380] [2023-11-28 20:26:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:16,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:26:25,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:26:25,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 185 transitions, 1293 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:25,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:25,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:26:25,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:29,785 INFO L124 PetriNetUnfolderBase]: 2127/4619 cut-off events. [2023-11-28 20:26:29,785 INFO L125 PetriNetUnfolderBase]: For 10239/10239 co-relation queries the response was YES. [2023-11-28 20:26:29,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15060 conditions, 4619 events. 2127/4619 cut-off events. For 10239/10239 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 26946 event pairs, 469 based on Foata normal form. 0/4557 useless extension candidates. Maximal degree in co-relation 15004. Up to 3194 conditions per place. [2023-11-28 20:26:29,821 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 243 selfloop transitions, 45 changer transitions 0/315 dead transitions. [2023-11-28 20:26:29,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 315 transitions, 2584 flow [2023-11-28 20:26:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:26:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:26:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2900 transitions. [2023-11-28 20:26:29,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029106029106029 [2023-11-28 20:26:29,825 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2900 transitions. [2023-11-28 20:26:29,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2900 transitions. [2023-11-28 20:26:29,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:29,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2900 transitions. [2023-11-28 20:26:29,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.53846153846153) internal successors, (2900), 26 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:29,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:29,833 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:29,833 INFO L175 Difference]: Start difference. First operand has 206 places, 185 transitions, 1293 flow. Second operand 26 states and 2900 transitions. [2023-11-28 20:26:29,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 315 transitions, 2584 flow [2023-11-28 20:26:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 315 transitions, 2489 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-11-28 20:26:29,864 INFO L231 Difference]: Finished difference. Result has 243 places, 216 transitions, 1734 flow [2023-11-28 20:26:29,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1734, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2023-11-28 20:26:29,865 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 68 predicate places. [2023-11-28 20:26:29,865 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 1734 flow [2023-11-28 20:26:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:29,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:29,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:29,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-11-28 20:26:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:30,066 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:26:30,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1333715683, now seen corresponding path program 4 times [2023-11-28 20:26:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916328025] [2023-11-28 20:26:30,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:26:30,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:30,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:30,068 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:26:30,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-28 20:26:30,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:26:30,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:30,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:26:30,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:30,471 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 11 treesize of output 7 [2023-11-28 20:26:30,510 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 19 treesize of output 18 [2023-11-28 20:26:30,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:30,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:26:30,873 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:26:30,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:26:30,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:26:31,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:31,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:26:31,314 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 11 [2023-11-28 20:26:31,828 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:26:31,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:26:31,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:26:32,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:32,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:26:32,128 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 27 treesize of output 15 [2023-11-28 20:26:32,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:32,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:26:32,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:26:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:32,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:32,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916328025] [2023-11-28 20:26:32,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916328025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:32,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:32,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:26:32,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855652579] [2023-11-28 20:26:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:32,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:26:40,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:26:40,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 1734 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:40,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:40,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:26:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:44,247 INFO L124 PetriNetUnfolderBase]: 2370/5141 cut-off events. [2023-11-28 20:26:44,247 INFO L125 PetriNetUnfolderBase]: For 18235/18235 co-relation queries the response was YES. [2023-11-28 20:26:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18045 conditions, 5141 events. 2370/5141 cut-off events. For 18235/18235 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 31097 event pairs, 530 based on Foata normal form. 0/5079 useless extension candidates. Maximal degree in co-relation 17973. Up to 3526 conditions per place. [2023-11-28 20:26:44,290 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 272 selfloop transitions, 52 changer transitions 0/351 dead transitions. [2023-11-28 20:26:44,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 351 transitions, 3223 flow [2023-11-28 20:26:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:26:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:26:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2906 transitions. [2023-11-28 20:26:44,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041580041580041 [2023-11-28 20:26:44,295 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2906 transitions. [2023-11-28 20:26:44,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2906 transitions. [2023-11-28 20:26:44,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:44,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2906 transitions. [2023-11-28 20:26:44,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.76923076923077) internal successors, (2906), 26 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:44,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:44,306 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:44,307 INFO L175 Difference]: Start difference. First operand has 243 places, 216 transitions, 1734 flow. Second operand 26 states and 2906 transitions. [2023-11-28 20:26:44,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 351 transitions, 3223 flow [2023-11-28 20:26:44,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 351 transitions, 3042 flow, removed 83 selfloop flow, removed 4 redundant places. [2023-11-28 20:26:44,382 INFO L231 Difference]: Finished difference. Result has 277 places, 245 transitions, 2165 flow [2023-11-28 20:26:44,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2165, PETRI_PLACES=277, PETRI_TRANSITIONS=245} [2023-11-28 20:26:44,382 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 102 predicate places. [2023-11-28 20:26:44,382 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 245 transitions, 2165 flow [2023-11-28 20:26:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:44,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-28 20:26:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:44,583 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:26:44,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1405592837, now seen corresponding path program 5 times [2023-11-28 20:26:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:44,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104403250] [2023-11-28 20:26:44,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:26:44,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:44,586 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:26:44,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-28 20:26:44,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:26:44,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:44,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:26:44,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:45,023 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 11 treesize of output 7 [2023-11-28 20:26:45,058 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 19 treesize of output 18 [2023-11-28 20:26:45,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:45,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:26:45,388 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:26:45,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:26:45,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:26:45,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:45,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:26:45,842 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 11 [2023-11-28 20:26:46,306 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:26:46,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:26:46,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:26:46,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:46,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:26:46,607 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 27 treesize of output 15 [2023-11-28 20:26:46,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:46,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:26:47,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:26:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:47,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:47,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104403250] [2023-11-28 20:26:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104403250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:47,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:47,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:26:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786039351] [2023-11-28 20:26:47,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:26:53,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:26:53,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 245 transitions, 2165 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:53,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:53,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:26:53,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:56,814 INFO L124 PetriNetUnfolderBase]: 2615/5677 cut-off events. [2023-11-28 20:26:56,814 INFO L125 PetriNetUnfolderBase]: For 29091/29091 co-relation queries the response was YES. [2023-11-28 20:26:56,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21092 conditions, 5677 events. 2615/5677 cut-off events. For 29091/29091 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 35526 event pairs, 510 based on Foata normal form. 0/5609 useless extension candidates. Maximal degree in co-relation 21006. Up to 3583 conditions per place. [2023-11-28 20:26:56,867 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 272 selfloop transitions, 80 changer transitions 0/379 dead transitions. [2023-11-28 20:26:56,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 379 transitions, 3811 flow [2023-11-28 20:26:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-28 20:26:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-28 20:26:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3011 transitions. [2023-11-28 20:26:56,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6028028028028029 [2023-11-28 20:26:56,870 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3011 transitions. [2023-11-28 20:26:56,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3011 transitions. [2023-11-28 20:26:56,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:56,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3011 transitions. [2023-11-28 20:26:56,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.51851851851852) internal successors, (3011), 27 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 185.0) internal successors, (5180), 28 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,878 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 185.0) internal successors, (5180), 28 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,878 INFO L175 Difference]: Start difference. First operand has 277 places, 245 transitions, 2165 flow. Second operand 27 states and 3011 transitions. [2023-11-28 20:26:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 379 transitions, 3811 flow [2023-11-28 20:26:56,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 379 transitions, 3522 flow, removed 122 selfloop flow, removed 7 redundant places. [2023-11-28 20:26:56,965 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 2682 flow [2023-11-28 20:26:56,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2682, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2023-11-28 20:26:56,965 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 135 predicate places. [2023-11-28 20:26:56,966 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 2682 flow [2023-11-28 20:26:56,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:56,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:56,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-11-28 20:26:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:57,167 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:26:57,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 140801059, now seen corresponding path program 6 times [2023-11-28 20:26:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:26:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737043232] [2023-11-28 20:26:57,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-28 20:26:57,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:26:57,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:26:57,169 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:26:57,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-28 20:26:57,533 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-28 20:26:57,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:57,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:26:57,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:57,573 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 11 treesize of output 7 [2023-11-28 20:26:57,602 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 19 treesize of output 18 [2023-11-28 20:26:57,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:57,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:26:57,994 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:26:57,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:26:58,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:26:58,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:58,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:26:58,330 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 11 [2023-11-28 20:26:58,883 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:26:58,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:26:58,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:26:59,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:59,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:26:59,167 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 27 treesize of output 15 [2023-11-28 20:26:59,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:26:59,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:26:59,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:26:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:59,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:59,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:26:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737043232] [2023-11-28 20:26:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737043232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:59,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:26:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669268125] [2023-11-28 20:26:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:26:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:27:06,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:27:06,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 2682 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:06,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:27:06,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:27:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:27:10,830 INFO L124 PetriNetUnfolderBase]: 2883/6270 cut-off events. [2023-11-28 20:27:10,830 INFO L125 PetriNetUnfolderBase]: For 43824/43828 co-relation queries the response was YES. [2023-11-28 20:27:10,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24691 conditions, 6270 events. 2883/6270 cut-off events. For 43824/43828 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 40505 event pairs, 591 based on Foata normal form. 4/6212 useless extension candidates. Maximal degree in co-relation 24590. Up to 3707 conditions per place. [2023-11-28 20:27:10,957 INFO L140 encePairwiseOnDemand]: 159/185 looper letters, 338 selfloop transitions, 79 changer transitions 0/444 dead transitions. [2023-11-28 20:27:10,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 444 transitions, 4823 flow [2023-11-28 20:27:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:27:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:27:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3143 transitions. [2023-11-28 20:27:10,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067567567567568 [2023-11-28 20:27:10,961 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3143 transitions. [2023-11-28 20:27:10,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3143 transitions. [2023-11-28 20:27:10,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:27:10,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3143 transitions. [2023-11-28 20:27:10,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.25) internal successors, (3143), 28 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:10,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:10,968 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:10,968 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 2682 flow. Second operand 28 states and 3143 transitions. [2023-11-28 20:27:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 444 transitions, 4823 flow [2023-11-28 20:27:11,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 444 transitions, 4423 flow, removed 187 selfloop flow, removed 6 redundant places. [2023-11-28 20:27:11,104 INFO L231 Difference]: Finished difference. Result has 343 places, 312 transitions, 3255 flow [2023-11-28 20:27:11,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3255, PETRI_PLACES=343, PETRI_TRANSITIONS=312} [2023-11-28 20:27:11,105 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 168 predicate places. [2023-11-28 20:27:11,105 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 312 transitions, 3255 flow [2023-11-28 20:27:11,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:11,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:27:11,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:11,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-28 20:27:11,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:11,306 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:27:11,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2072342753, now seen corresponding path program 7 times [2023-11-28 20:27:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:11,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286808618] [2023-11-28 20:27:11,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-28 20:27:11,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:11,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:11,308 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:27:11,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-11-28 20:27:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:11,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:27:11,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:11,725 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 11 treesize of output 7 [2023-11-28 20:27:11,755 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 19 treesize of output 18 [2023-11-28 20:27:11,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:11,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:27:12,106 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:27:12,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:27:12,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:27:12,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:12,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:27:12,555 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 11 [2023-11-28 20:27:13,033 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:27:13,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:27:13,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:27:13,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:13,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:27:13,287 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 27 treesize of output 15 [2023-11-28 20:27:13,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:13,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:27:13,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:27:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:13,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:27:13,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286808618] [2023-11-28 20:27:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286808618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:13,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:13,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:27:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764797452] [2023-11-28 20:27:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:27:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:27:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:27:21,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:27:21,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 312 transitions, 3255 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:21,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:27:21,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:27:21,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:27:25,992 INFO L124 PetriNetUnfolderBase]: 3125/6801 cut-off events. [2023-11-28 20:27:25,992 INFO L125 PetriNetUnfolderBase]: For 59530/59534 co-relation queries the response was YES. [2023-11-28 20:27:26,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27631 conditions, 6801 events. 3125/6801 cut-off events. For 59530/59534 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 45085 event pairs, 639 based on Foata normal form. 4/6741 useless extension candidates. Maximal degree in co-relation 27517. Up to 4301 conditions per place. [2023-11-28 20:27:26,074 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 365 selfloop transitions, 68 changer transitions 0/460 dead transitions. [2023-11-28 20:27:26,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 460 transitions, 5289 flow [2023-11-28 20:27:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:27:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:27:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2923 transitions. [2023-11-28 20:27:26,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2023-11-28 20:27:26,079 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2923 transitions. [2023-11-28 20:27:26,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2923 transitions. [2023-11-28 20:27:26,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:27:26,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2923 transitions. [2023-11-28 20:27:26,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.42307692307692) internal successors, (2923), 26 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:26,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:26,089 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:26,089 INFO L175 Difference]: Start difference. First operand has 343 places, 312 transitions, 3255 flow. Second operand 26 states and 2923 transitions. [2023-11-28 20:27:26,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 460 transitions, 5289 flow [2023-11-28 20:27:26,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 460 transitions, 4780 flow, removed 220 selfloop flow, removed 9 redundant places. [2023-11-28 20:27:26,392 INFO L231 Difference]: Finished difference. Result has 373 places, 341 transitions, 3648 flow [2023-11-28 20:27:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3648, PETRI_PLACES=373, PETRI_TRANSITIONS=341} [2023-11-28 20:27:26,393 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 198 predicate places. [2023-11-28 20:27:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 341 transitions, 3648 flow [2023-11-28 20:27:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:26,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:27:26,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:26,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-11-28 20:27:26,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:26,594 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:27:26,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1926146641, now seen corresponding path program 8 times [2023-11-28 20:27:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:26,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746627102] [2023-11-28 20:27:26,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:27:26,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:26,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:26,596 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:27:26,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-28 20:27:26,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:27:26,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:26,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:27:26,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:27,018 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 11 treesize of output 7 [2023-11-28 20:27:27,047 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 19 treesize of output 18 [2023-11-28 20:27:27,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:27,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:27:27,406 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:27:27,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:27:27,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:27:27,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:27,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:27:27,788 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 11 [2023-11-28 20:27:28,385 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:27:28,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:27:28,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:27:28,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:28,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:27:28,700 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 27 treesize of output 15 [2023-11-28 20:27:28,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:28,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:27:29,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:27:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:29,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:27:29,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:29,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746627102] [2023-11-28 20:27:29,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746627102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:29,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:29,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:27:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264090752] [2023-11-28 20:27:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:27:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:27:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:27:35,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:27:35,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 341 transitions, 3648 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:35,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:27:35,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:27:35,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:27:40,559 INFO L124 PetriNetUnfolderBase]: 3355/7280 cut-off events. [2023-11-28 20:27:40,559 INFO L125 PetriNetUnfolderBase]: For 65552/65562 co-relation queries the response was YES. [2023-11-28 20:27:40,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 7280 events. 3355/7280 cut-off events. For 65552/65562 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 49327 event pairs, 614 based on Foata normal form. 10/7236 useless extension candidates. Maximal degree in co-relation 29907. Up to 4126 conditions per place. [2023-11-28 20:27:40,645 INFO L140 encePairwiseOnDemand]: 159/185 looper letters, 361 selfloop transitions, 114 changer transitions 0/502 dead transitions. [2023-11-28 20:27:40,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 502 transitions, 5803 flow [2023-11-28 20:27:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-28 20:27:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-28 20:27:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3252 transitions. [2023-11-28 20:27:40,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061509785647716 [2023-11-28 20:27:40,649 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3252 transitions. [2023-11-28 20:27:40,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3252 transitions. [2023-11-28 20:27:40,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:27:40,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3252 transitions. [2023-11-28 20:27:40,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 112.13793103448276) internal successors, (3252), 29 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:40,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 185.0) internal successors, (5550), 30 states have internal predecessors, (5550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:40,658 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 185.0) internal successors, (5550), 30 states have internal predecessors, (5550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:40,658 INFO L175 Difference]: Start difference. First operand has 373 places, 341 transitions, 3648 flow. Second operand 29 states and 3252 transitions. [2023-11-28 20:27:40,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 502 transitions, 5803 flow [2023-11-28 20:27:40,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 502 transitions, 5358 flow, removed 200 selfloop flow, removed 7 redundant places. [2023-11-28 20:27:40,888 INFO L231 Difference]: Finished difference. Result has 404 places, 365 transitions, 4102 flow [2023-11-28 20:27:40,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4102, PETRI_PLACES=404, PETRI_TRANSITIONS=365} [2023-11-28 20:27:40,889 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 229 predicate places. [2023-11-28 20:27:40,889 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 365 transitions, 4102 flow [2023-11-28 20:27:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:40,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:27:40,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:40,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-28 20:27:41,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:41,090 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:27:41,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:41,090 INFO L85 PathProgramCache]: Analyzing trace with hash -559327503, now seen corresponding path program 9 times [2023-11-28 20:27:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:41,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111978561] [2023-11-28 20:27:41,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:27:41,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:41,092 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:27:41,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-11-28 20:27:41,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-28 20:27:41,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:41,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:27:41,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:41,522 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 11 treesize of output 7 [2023-11-28 20:27:41,546 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 19 treesize of output 18 [2023-11-28 20:27:41,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:41,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:27:41,881 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:27:41,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:27:41,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:27:42,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:42,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:27:42,269 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 11 [2023-11-28 20:27:42,689 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:27:42,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:27:42,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:27:42,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:43,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:27:43,082 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 27 treesize of output 15 [2023-11-28 20:27:43,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:43,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:27:43,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:27:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:43,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:27:43,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:27:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111978561] [2023-11-28 20:27:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111978561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:27:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36932445] [2023-11-28 20:27:43,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:27:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:27:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:27:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:27:51,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:27:51,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 365 transitions, 4102 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:51,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:27:51,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:27:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:27:57,444 INFO L124 PetriNetUnfolderBase]: 3528/7632 cut-off events. [2023-11-28 20:27:57,445 INFO L125 PetriNetUnfolderBase]: For 85616/85630 co-relation queries the response was YES. [2023-11-28 20:27:57,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32644 conditions, 7632 events. 3528/7632 cut-off events. For 85616/85630 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 52453 event pairs, 616 based on Foata normal form. 10/7586 useless extension candidates. Maximal degree in co-relation 32504. Up to 3751 conditions per place. [2023-11-28 20:27:57,542 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 349 selfloop transitions, 147 changer transitions 0/523 dead transitions. [2023-11-28 20:27:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 523 transitions, 6329 flow [2023-11-28 20:27:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-28 20:27:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-28 20:27:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3255 transitions. [2023-11-28 20:27:57,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067101584342963 [2023-11-28 20:27:57,546 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3255 transitions. [2023-11-28 20:27:57,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3255 transitions. [2023-11-28 20:27:57,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:27:57,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3255 transitions. [2023-11-28 20:27:57,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 112.24137931034483) internal successors, (3255), 29 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:57,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 185.0) internal successors, (5550), 30 states have internal predecessors, (5550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:57,553 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 185.0) internal successors, (5550), 30 states have internal predecessors, (5550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:57,553 INFO L175 Difference]: Start difference. First operand has 404 places, 365 transitions, 4102 flow. Second operand 29 states and 3255 transitions. [2023-11-28 20:27:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 523 transitions, 6329 flow [2023-11-28 20:27:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 523 transitions, 5893 flow, removed 189 selfloop flow, removed 8 redundant places. [2023-11-28 20:27:57,877 INFO L231 Difference]: Finished difference. Result has 433 places, 386 transitions, 4676 flow [2023-11-28 20:27:57,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4676, PETRI_PLACES=433, PETRI_TRANSITIONS=386} [2023-11-28 20:27:57,878 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 258 predicate places. [2023-11-28 20:27:57,878 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 386 transitions, 4676 flow [2023-11-28 20:27:57,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:57,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:27:57,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:57,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-11-28 20:27:58,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:58,079 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:27:58,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1714550115, now seen corresponding path program 10 times [2023-11-28 20:27:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:27:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506359105] [2023-11-28 20:27:58,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:27:58,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:27:58,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:27:58,081 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:27:58,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-28 20:27:58,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:27:58,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:58,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:27:58,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:58,492 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 11 treesize of output 7 [2023-11-28 20:27:58,521 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 19 treesize of output 18 [2023-11-28 20:27:58,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:58,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:27:58,837 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:27:58,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:27:58,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:27:59,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:59,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:27:59,219 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 11 [2023-11-28 20:27:59,630 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:27:59,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:27:59,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:27:59,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:27:59,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:27:59,925 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 27 treesize of output 15 [2023-11-28 20:28:00,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:28:00,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:28:00,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:28:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:00,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:28:00,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:28:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506359105] [2023-11-28 20:28:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506359105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:28:00,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:28:00,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:28:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477797259] [2023-11-28 20:28:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:28:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:28:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:28:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:28:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:28:06,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:28:06,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 386 transitions, 4676 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:06,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:28:06,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:28:06,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:28:12,572 INFO L124 PetriNetUnfolderBase]: 3696/7942 cut-off events. [2023-11-28 20:28:12,573 INFO L125 PetriNetUnfolderBase]: For 108831/108842 co-relation queries the response was YES. [2023-11-28 20:28:12,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35258 conditions, 7942 events. 3696/7942 cut-off events. For 108831/108842 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 55193 event pairs, 286 based on Foata normal form. 10/7912 useless extension candidates. Maximal degree in co-relation 35108. Up to 1835 conditions per place. [2023-11-28 20:28:12,694 INFO L140 encePairwiseOnDemand]: 159/185 looper letters, 359 selfloop transitions, 201 changer transitions 0/587 dead transitions. [2023-11-28 20:28:12,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 587 transitions, 7401 flow [2023-11-28 20:28:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-28 20:28:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-28 20:28:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3822 transitions. [2023-11-28 20:28:12,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.607631160572337 [2023-11-28 20:28:12,698 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3822 transitions. [2023-11-28 20:28:12,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3822 transitions. [2023-11-28 20:28:12,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:28:12,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3822 transitions. [2023-11-28 20:28:12,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 112.41176470588235) internal successors, (3822), 34 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:12,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 185.0) internal successors, (6475), 35 states have internal predecessors, (6475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:12,706 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 185.0) internal successors, (6475), 35 states have internal predecessors, (6475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:12,707 INFO L175 Difference]: Start difference. First operand has 433 places, 386 transitions, 4676 flow. Second operand 34 states and 3822 transitions. [2023-11-28 20:28:12,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 587 transitions, 7401 flow [2023-11-28 20:28:13,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 587 transitions, 6763 flow, removed 233 selfloop flow, removed 14 redundant places. [2023-11-28 20:28:13,201 INFO L231 Difference]: Finished difference. Result has 463 places, 418 transitions, 5614 flow [2023-11-28 20:28:13,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5614, PETRI_PLACES=463, PETRI_TRANSITIONS=418} [2023-11-28 20:28:13,202 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 288 predicate places. [2023-11-28 20:28:13,202 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 418 transitions, 5614 flow [2023-11-28 20:28:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:13,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:28:13,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:13,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-11-28 20:28:13,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:13,403 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:28:13,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash 302581193, now seen corresponding path program 11 times [2023-11-28 20:28:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:28:13,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918495833] [2023-11-28 20:28:13,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:28:13,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:28:13,405 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:28:13,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-11-28 20:28:13,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:28:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:28:13,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-28 20:28:13,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:13,839 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 11 treesize of output 7 [2023-11-28 20:28:13,903 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 19 treesize of output 18 [2023-11-28 20:28:13,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:28:13,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 20:28:14,326 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2023-11-28 20:28:14,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 39 treesize of output 43 [2023-11-28 20:28:14,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-28 20:28:14,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:28:14,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-28 20:28:14,729 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 11 [2023-11-28 20:28:15,229 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-28 20:28:15,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-28 20:28:15,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-28 20:28:15,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:28:15,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-28 20:28:15,519 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 27 treesize of output 15 [2023-11-28 20:28:15,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:28:15,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-28 20:28:15,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:28:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:15,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:28:15,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:28:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918495833] [2023-11-28 20:28:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918495833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:28:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:28:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 20:28:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531294089] [2023-11-28 20:28:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:28:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:28:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:28:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:28:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:28:23,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-28 20:28:23,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 418 transitions, 5614 flow. Second operand has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:23,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:28:23,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-28 20:28:23,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:28:28,557 INFO L124 PetriNetUnfolderBase]: 3680/7919 cut-off events. [2023-11-28 20:28:28,557 INFO L125 PetriNetUnfolderBase]: For 89206/89216 co-relation queries the response was YES. [2023-11-28 20:28:28,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35314 conditions, 7919 events. 3680/7919 cut-off events. For 89206/89216 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 54964 event pairs, 784 based on Foata normal form. 10/7868 useless extension candidates. Maximal degree in co-relation 35152. Up to 6112 conditions per place. [2023-11-28 20:28:28,689 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 466 selfloop transitions, 43 changer transitions 0/536 dead transitions. [2023-11-28 20:28:28,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 536 transitions, 7890 flow [2023-11-28 20:28:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:28:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 20:28:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2893 transitions. [2023-11-28 20:28:28,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014553014553015 [2023-11-28 20:28:28,694 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2893 transitions. [2023-11-28 20:28:28,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2893 transitions. [2023-11-28 20:28:28,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:28:28,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2893 transitions. [2023-11-28 20:28:28,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.26923076923077) internal successors, (2893), 26 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:28,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:28,702 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:28,702 INFO L175 Difference]: Start difference. First operand has 463 places, 418 transitions, 5614 flow. Second operand 26 states and 2893 transitions. [2023-11-28 20:28:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 536 transitions, 7890 flow [2023-11-28 20:28:29,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 536 transitions, 6766 flow, removed 421 selfloop flow, removed 20 redundant places. [2023-11-28 20:28:29,293 INFO L231 Difference]: Finished difference. Result has 479 places, 446 transitions, 5577 flow [2023-11-28 20:28:29,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4746, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5577, PETRI_PLACES=479, PETRI_TRANSITIONS=446} [2023-11-28 20:28:29,294 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 304 predicate places. [2023-11-28 20:28:29,294 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 446 transitions, 5577 flow [2023-11-28 20:28:29,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.125) internal successors, (2547), 24 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:29,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:28:29,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:29,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-11-28 20:28:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:29,495 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:28:29,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash 199985498, now seen corresponding path program 1 times [2023-11-28 20:28:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:28:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037919164] [2023-11-28 20:28:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:28:29,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:29,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:28:29,497 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:28:29,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-11-28 20:28:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:28:29,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:28:29,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:28:29,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:28:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:28:29,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:28:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037919164] [2023-11-28 20:28:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037919164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:28:29,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:28:29,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-28 20:28:29,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661478006] [2023-11-28 20:28:29,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:28:29,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:28:29,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:28:29,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:28:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:28:29,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-28 20:28:29,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 446 transitions, 5577 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:29,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:28:29,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-28 20:28:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:28:34,442 INFO L124 PetriNetUnfolderBase]: 5935/12549 cut-off events. [2023-11-28 20:28:34,442 INFO L125 PetriNetUnfolderBase]: For 51691/51763 co-relation queries the response was YES. [2023-11-28 20:28:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46039 conditions, 12549 events. 5935/12549 cut-off events. For 51691/51763 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 90028 event pairs, 1309 based on Foata normal form. 417/12829 useless extension candidates. Maximal degree in co-relation 45871. Up to 5204 conditions per place. [2023-11-28 20:28:34,674 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 477 selfloop transitions, 87 changer transitions 0/645 dead transitions. [2023-11-28 20:28:34,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 645 transitions, 8027 flow [2023-11-28 20:28:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:28:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:28:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 909 transitions. [2023-11-28 20:28:34,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8189189189189189 [2023-11-28 20:28:34,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 909 transitions. [2023-11-28 20:28:34,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 909 transitions. [2023-11-28 20:28:34,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:28:34,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 909 transitions. [2023-11-28 20:28:34,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:34,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:34,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:34,679 INFO L175 Difference]: Start difference. First operand has 479 places, 446 transitions, 5577 flow. Second operand 6 states and 909 transitions. [2023-11-28 20:28:34,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 645 transitions, 8027 flow [2023-11-28 20:28:35,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 645 transitions, 7366 flow, removed 268 selfloop flow, removed 27 redundant places. [2023-11-28 20:28:35,182 INFO L231 Difference]: Finished difference. Result has 461 places, 449 transitions, 5211 flow [2023-11-28 20:28:35,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5211, PETRI_PLACES=461, PETRI_TRANSITIONS=449} [2023-11-28 20:28:35,183 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 286 predicate places. [2023-11-28 20:28:35,183 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 449 transitions, 5211 flow [2023-11-28 20:28:35,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:35,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:28:35,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:35,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-11-28 20:28:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:35,385 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:28:35,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1131330007, now seen corresponding path program 1 times [2023-11-28 20:28:35,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:28:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514453218] [2023-11-28 20:28:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:28:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:28:35,387 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:28:35,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-11-28 20:28:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:28:35,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:28:35,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:35,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:28:36,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-28 20:28:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:36,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:28:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514453218] [2023-11-28 20:28:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514453218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:28:36,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:28:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-28 20:28:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439186904] [2023-11-28 20:28:36,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:28:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:28:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:28:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:28:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:28:38,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:28:38,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 449 transitions, 5211 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:38,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:28:38,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:28:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:28:46,201 INFO L124 PetriNetUnfolderBase]: 7918/17711 cut-off events. [2023-11-28 20:28:46,201 INFO L125 PetriNetUnfolderBase]: For 70419/70798 co-relation queries the response was YES. [2023-11-28 20:28:46,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64782 conditions, 17711 events. 7918/17711 cut-off events. For 70419/70798 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 145586 event pairs, 2290 based on Foata normal form. 84/17549 useless extension candidates. Maximal degree in co-relation 64631. Up to 4337 conditions per place. [2023-11-28 20:28:46,698 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 681 selfloop transitions, 209 changer transitions 0/960 dead transitions. [2023-11-28 20:28:46,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 960 transitions, 10691 flow [2023-11-28 20:28:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 20:28:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-28 20:28:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2023-11-28 20:28:46,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7414414414414414 [2023-11-28 20:28:46,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2469 transitions. [2023-11-28 20:28:46,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2469 transitions. [2023-11-28 20:28:46,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:28:46,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2469 transitions. [2023-11-28 20:28:46,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.16666666666666) internal successors, (2469), 18 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:46,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:46,709 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:46,709 INFO L175 Difference]: Start difference. First operand has 461 places, 449 transitions, 5211 flow. Second operand 18 states and 2469 transitions. [2023-11-28 20:28:46,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 960 transitions, 10691 flow [2023-11-28 20:28:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 960 transitions, 10538 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-28 20:28:47,415 INFO L231 Difference]: Finished difference. Result has 490 places, 516 transitions, 6561 flow [2023-11-28 20:28:47,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5101, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6561, PETRI_PLACES=490, PETRI_TRANSITIONS=516} [2023-11-28 20:28:47,416 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 315 predicate places. [2023-11-28 20:28:47,416 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 516 transitions, 6561 flow [2023-11-28 20:28:47,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:47,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:28:47,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:47,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-11-28 20:28:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:47,617 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:28:47,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1090424635, now seen corresponding path program 2 times [2023-11-28 20:28:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:28:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262450326] [2023-11-28 20:28:47,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:28:47,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:28:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:28:47,619 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:28:47,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-11-28 20:28:47,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:28:47,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:28:47,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:28:47,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:48,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:28:48,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-28 20:28:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:28:49,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:28:49,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262450326] [2023-11-28 20:28:49,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262450326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:28:49,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:28:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-28 20:28:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323788284] [2023-11-28 20:28:49,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:28:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:28:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:28:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:28:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:28:51,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:28:51,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 516 transitions, 6561 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:51,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:28:51,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:28:51,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:28:59,187 INFO L124 PetriNetUnfolderBase]: 8375/18794 cut-off events. [2023-11-28 20:28:59,188 INFO L125 PetriNetUnfolderBase]: For 98677/99229 co-relation queries the response was YES. [2023-11-28 20:28:59,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73905 conditions, 18794 events. 8375/18794 cut-off events. For 98677/99229 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 157349 event pairs, 2577 based on Foata normal form. 112/18613 useless extension candidates. Maximal degree in co-relation 73739. Up to 4468 conditions per place. [2023-11-28 20:28:59,615 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 544 selfloop transitions, 221 changer transitions 0/835 dead transitions. [2023-11-28 20:28:59,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 835 transitions, 10504 flow [2023-11-28 20:28:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:28:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 20:28:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1769 transitions. [2023-11-28 20:28:59,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7355509355509355 [2023-11-28 20:28:59,618 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1769 transitions. [2023-11-28 20:28:59,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1769 transitions. [2023-11-28 20:28:59,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:28:59,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1769 transitions. [2023-11-28 20:28:59,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 136.07692307692307) internal successors, (1769), 13 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:59,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:59,622 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:28:59,622 INFO L175 Difference]: Start difference. First operand has 490 places, 516 transitions, 6561 flow. Second operand 13 states and 1769 transitions. [2023-11-28 20:28:59,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 835 transitions, 10504 flow [2023-11-28 20:29:00,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 835 transitions, 10275 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-11-28 20:29:00,542 INFO L231 Difference]: Finished difference. Result has 505 places, 543 transitions, 7557 flow [2023-11-28 20:29:00,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7557, PETRI_PLACES=505, PETRI_TRANSITIONS=543} [2023-11-28 20:29:00,543 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 330 predicate places. [2023-11-28 20:29:00,543 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 543 transitions, 7557 flow [2023-11-28 20:29:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:00,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:29:00,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:00,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2023-11-28 20:29:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:00,744 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:29:00,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1471395465, now seen corresponding path program 3 times [2023-11-28 20:29:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:29:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896813555] [2023-11-28 20:29:00,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:29:00,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:29:00,746 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:29:00,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-11-28 20:29:01,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:29:01,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:29:01,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:29:01,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:29:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:01,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:29:01,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-28 20:29:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:02,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:29:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896813555] [2023-11-28 20:29:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896813555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:29:02,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:29:02,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-28 20:29:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188041861] [2023-11-28 20:29:02,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:29:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:29:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:29:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:29:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:29:06,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:29:06,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 543 transitions, 7557 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:06,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:29:06,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:29:06,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:29:14,966 INFO L124 PetriNetUnfolderBase]: 8926/20246 cut-off events. [2023-11-28 20:29:14,966 INFO L125 PetriNetUnfolderBase]: For 134284/134898 co-relation queries the response was YES. [2023-11-28 20:29:15,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83235 conditions, 20246 events. 8926/20246 cut-off events. For 134284/134898 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 173537 event pairs, 2806 based on Foata normal form. 130/20090 useless extension candidates. Maximal degree in co-relation 83065. Up to 6229 conditions per place. [2023-11-28 20:29:15,458 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 563 selfloop transitions, 202 changer transitions 0/835 dead transitions. [2023-11-28 20:29:15,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 835 transitions, 11103 flow [2023-11-28 20:29:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:29:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:29:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1613 transitions. [2023-11-28 20:29:15,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7265765765765766 [2023-11-28 20:29:15,460 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1613 transitions. [2023-11-28 20:29:15,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1613 transitions. [2023-11-28 20:29:15,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:29:15,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1613 transitions. [2023-11-28 20:29:15,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.41666666666666) internal successors, (1613), 12 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:15,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:15,465 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:15,465 INFO L175 Difference]: Start difference. First operand has 505 places, 543 transitions, 7557 flow. Second operand 12 states and 1613 transitions. [2023-11-28 20:29:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 835 transitions, 11103 flow [2023-11-28 20:29:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 835 transitions, 10802 flow, removed 38 selfloop flow, removed 11 redundant places. [2023-11-28 20:29:16,585 INFO L231 Difference]: Finished difference. Result has 508 places, 561 transitions, 8212 flow [2023-11-28 20:29:16,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7322, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8212, PETRI_PLACES=508, PETRI_TRANSITIONS=561} [2023-11-28 20:29:16,586 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 333 predicate places. [2023-11-28 20:29:16,586 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 561 transitions, 8212 flow [2023-11-28 20:29:16,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:16,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:29:16,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:16,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2023-11-28 20:29:16,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:16,787 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:29:16,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1766892011, now seen corresponding path program 4 times [2023-11-28 20:29:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:29:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741861692] [2023-11-28 20:29:16,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:29:16,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:16,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:29:16,789 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:29:16,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-11-28 20:29:17,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:29:17,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:29:17,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:29:17,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:29:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:17,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:29:17,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-28 20:29:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:18,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:29:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741861692] [2023-11-28 20:29:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741861692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:29:18,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:29:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-28 20:29:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042257482] [2023-11-28 20:29:18,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:29:18,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:29:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:29:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:29:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:29:20,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:29:20,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 561 transitions, 8212 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:20,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:29:20,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:29:20,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:29:32,389 INFO L124 PetriNetUnfolderBase]: 11965/26866 cut-off events. [2023-11-28 20:29:32,389 INFO L125 PetriNetUnfolderBase]: For 197188/197824 co-relation queries the response was YES. [2023-11-28 20:29:32,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111652 conditions, 26866 events. 11965/26866 cut-off events. For 197188/197824 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 240026 event pairs, 3070 based on Foata normal form. 119/26564 useless extension candidates. Maximal degree in co-relation 111486. Up to 7414 conditions per place. [2023-11-28 20:29:33,188 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 799 selfloop transitions, 244 changer transitions 0/1113 dead transitions. [2023-11-28 20:29:33,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 1113 transitions, 15159 flow [2023-11-28 20:29:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 20:29:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-28 20:29:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2440 transitions. [2023-11-28 20:29:33,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7327327327327328 [2023-11-28 20:29:33,193 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2440 transitions. [2023-11-28 20:29:33,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2440 transitions. [2023-11-28 20:29:33,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:29:33,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2440 transitions. [2023-11-28 20:29:33,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 135.55555555555554) internal successors, (2440), 18 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:33,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:33,200 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:33,200 INFO L175 Difference]: Start difference. First operand has 508 places, 561 transitions, 8212 flow. Second operand 18 states and 2440 transitions. [2023-11-28 20:29:33,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 1113 transitions, 15159 flow [2023-11-28 20:29:34,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 1113 transitions, 14945 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-11-28 20:29:34,888 INFO L231 Difference]: Finished difference. Result has 530 places, 655 transitions, 10062 flow [2023-11-28 20:29:34,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=8041, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10062, PETRI_PLACES=530, PETRI_TRANSITIONS=655} [2023-11-28 20:29:34,888 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 355 predicate places. [2023-11-28 20:29:34,888 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 655 transitions, 10062 flow [2023-11-28 20:29:34,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:34,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:29:34,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:34,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-11-28 20:29:35,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:35,089 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:29:35,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1581667519, now seen corresponding path program 5 times [2023-11-28 20:29:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:29:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516033960] [2023-11-28 20:29:35,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:29:35,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:29:35,091 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:29:35,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-11-28 20:29:35,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:29:35,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:29:35,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:29:35,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:29:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:35,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:29:35,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-28 20:29:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:29:36,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 20:29:36,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516033960] [2023-11-28 20:29:36,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516033960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:29:36,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:29:36,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-28 20:29:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777913081] [2023-11-28 20:29:36,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:29:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:29:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 20:29:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:29:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:29:40,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-28 20:29:40,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 655 transitions, 10062 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:40,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:29:40,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-28 20:29:40,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:29:55,270 INFO L124 PetriNetUnfolderBase]: 13651/30780 cut-off events. [2023-11-28 20:29:55,270 INFO L125 PetriNetUnfolderBase]: For 276273/276899 co-relation queries the response was YES. [2023-11-28 20:29:56,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133865 conditions, 30780 events. 13651/30780 cut-off events. For 276273/276899 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 281350 event pairs, 3300 based on Foata normal form. 123/30362 useless extension candidates. Maximal degree in co-relation 133690. Up to 8007 conditions per place. [2023-11-28 20:29:56,174 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 867 selfloop transitions, 275 changer transitions 0/1212 dead transitions. [2023-11-28 20:29:56,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1212 transitions, 17013 flow [2023-11-28 20:29:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:29:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-28 20:29:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2023-11-28 20:29:56,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7168037602820212 [2023-11-28 20:29:56,179 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2023-11-28 20:29:56,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2023-11-28 20:29:56,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:29:56,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2023-11-28 20:29:56,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:56,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 185.0) internal successors, (4440), 24 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:56,188 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 185.0) internal successors, (4440), 24 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:56,188 INFO L175 Difference]: Start difference. First operand has 530 places, 655 transitions, 10062 flow. Second operand 23 states and 3050 transitions. [2023-11-28 20:29:56,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1212 transitions, 17013 flow [2023-11-28 20:29:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1212 transitions, 16537 flow, removed 149 selfloop flow, removed 5 redundant places. [2023-11-28 20:29:58,692 INFO L231 Difference]: Finished difference. Result has 558 places, 705 transitions, 11548 flow [2023-11-28 20:29:58,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=9706, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11548, PETRI_PLACES=558, PETRI_TRANSITIONS=705} [2023-11-28 20:29:58,692 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 383 predicate places. [2023-11-28 20:29:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 705 transitions, 11548 flow [2023-11-28 20:29:58,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:29:58,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:29:58,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:58,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-11-28 20:29:58,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:58,893 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-28 20:29:58,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1972346324, now seen corresponding path program 1 times [2023-11-28 20:29:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 20:29:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548937878] [2023-11-28 20:29:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:29:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 20:29:58,895 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 20:29:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-11-28 20:29:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:29:59,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:29:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:29:59,760 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-28 20:29:59,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 20:29:59,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (141 of 142 remaining) [2023-11-28 20:29:59,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 142 remaining) [2023-11-28 20:29:59,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (128 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 142 remaining) [2023-11-28 20:29:59,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (121 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (119 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 142 remaining) [2023-11-28 20:29:59,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 142 remaining) [2023-11-28 20:29:59,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 142 remaining) [2023-11-28 20:29:59,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (98 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 142 remaining) [2023-11-28 20:29:59,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 142 remaining) [2023-11-28 20:29:59,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 142 remaining) [2023-11-28 20:29:59,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 142 remaining) [2023-11-28 20:29:59,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 142 remaining) [2023-11-28 20:29:59,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (59 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 142 remaining) [2023-11-28 20:29:59,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 142 remaining) [2023-11-28 20:29:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 142 remaining) [2023-11-28 20:29:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (38 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 142 remaining) [2023-11-28 20:29:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 142 remaining) [2023-11-28 20:29:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 142 remaining) [2023-11-28 20:29:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 142 remaining) [2023-11-28 20:29:59,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 142 remaining) [2023-11-28 20:29:59,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 142 remaining) [2023-11-28 20:29:59,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 142 remaining) [2023-11-28 20:29:59,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-11-28 20:29:59,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 20:29:59,981 INFO L445 BasicCegarLoop]: Path program histogram: [11, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:59,987 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:29:59,988 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:30:00,131 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-28 20:30:00,133 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-28 20:30:00,134 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-28 20:30:00,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-28 20:30:00,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-28 20:30:00,136 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-28 20:30:00,138 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-28 20:30:00,138 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-28 20:30:00,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-28 20:30:00,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-28 20:30:00,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated [2023-11-28 20:30:00,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-11-28 20:30:00,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-11-28 20:30:00,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated [2023-11-28 20:30:00,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-28 20:30:00,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-28 20:30:00,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:30:00 BasicIcfg [2023-11-28 20:30:00,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:30:00,157 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:30:00,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:30:00,157 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:30:00,158 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:38" (3/4) ... [2023-11-28 20:30:00,160 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-28 20:30:00,161 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:30:00,161 INFO L158 Benchmark]: Toolchain (without parser) took 323577.40ms. Allocated memory was 94.4MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 74.8MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-11-28 20:30:00,162 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 65.0MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:30:00,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.00ms. Allocated memory is still 94.4MB. Free memory was 74.8MB in the beginning and 64.0MB in the end (delta: 10.8MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-28 20:30:00,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.09ms. Allocated memory is still 94.4MB. Free memory was 64.0MB in the beginning and 60.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:30:00,163 INFO L158 Benchmark]: Boogie Preprocessor took 71.78ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 56.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:30:00,163 INFO L158 Benchmark]: RCFGBuilder took 1337.89ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.4MB in the beginning and 78.8MB in the end (delta: -22.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-28 20:30:00,163 INFO L158 Benchmark]: TraceAbstraction took 321348.80ms. Allocated memory was 113.2MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 78.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2023-11-28 20:30:00,164 INFO L158 Benchmark]: Witness Printer took 3.76ms. Allocated memory is still 6.9GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:30:00,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 65.0MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.00ms. Allocated memory is still 94.4MB. Free memory was 74.8MB in the beginning and 64.0MB in the end (delta: 10.8MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.09ms. Allocated memory is still 94.4MB. Free memory was 64.0MB in the beginning and 60.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.78ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 56.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1337.89ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.4MB in the beginning and 78.8MB in the end (delta: -22.4MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 321348.80ms. Allocated memory was 113.2MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 78.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 3.76ms. Allocated memory is still 6.9GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(20)]; [L949] 0 int stored_elements[(20)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L955] 0 q->tail=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1063] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={7:0}, id2={6:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1064] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={7:0}, id2={6:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(20) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] 2 i++ VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1018] 1 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1018] COND TRUE 1 i<((20)-1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L1037] COND TRUE 2 i<(20) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L996] 2 q->amount-- [L997] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L997] COND FALSE 2 !(q->head == (20)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] CALL 2 reach_error() [L21] COND FALSE 2 !(0) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L21] 2 __assert_fail ("0", "queue.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 301 locations, 142 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 321.0s, OverallIterations: 51, TraceHistogramMax: 2, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 263.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37979 SdHoareTripleChecker+Valid, 170.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32681 mSDsluCounter, 89329 SdHoareTripleChecker+Invalid, 149.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87653 mSDsCounter, 520 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136572 IncrementalHoareTripleChecker+Invalid, 137092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 520 mSolverCounterUnsat, 1676 mSDtfsCounter, 136572 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2639 GetRequests, 1978 SyntacticMatches, 0 SemanticMatches, 661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4629 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11548occurred in iteration=50, InterpolantAutomatonStates: 576, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 35.2s InterpolantComputationTime, 2128 NumberOfCodeBlocks, 2128 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 2402 ConstructedInterpolants, 45 QuantifiedInterpolants, 38511 SizeOfPredicates, 618 NumberOfNonLiveVariables, 12578 ConjunctsInSsa, 1181 ConjunctsInUnsatCore, 56 InterpolantComputations, 44 PerfectInterpolantSequences, 13/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-28 20:30:00,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc303f5c-5710-4853-97a6-5e3063be425b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample