./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:52:37,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:52:37,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:52:37,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:52:37,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:52:37,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:52:37,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:52:37,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:52:37,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:52:37,429 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:52:37,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:52:37,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:52:37,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:52:37,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:52:37,434 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:52:37,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:52:37,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:52:37,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:52:37,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:52:37,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:52:37,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:52:37,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:52:37,438 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:52:37,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:52:37,440 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:52:37,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:52:37,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:52:37,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:52:37,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:52:37,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:52:37,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:52:37,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:52:37,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:37,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:52:37,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:52:37,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:52:37,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:52:37,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:52:37,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:52:37,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:52:37,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:52:37,448 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_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2023-11-24 21:52:37,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:52:37,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:52:37,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:52:37,779 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:52:37,780 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:52:37,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-24 21:52:41,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:52:41,470 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:52:41,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-24 21:52:41,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/data/856d98e71/b73ed60624c943539adb8c4dce058096/FLAG42aa920b3 [2023-11-24 21:52:41,521 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/data/856d98e71/b73ed60624c943539adb8c4dce058096 [2023-11-24 21:52:41,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:52:41,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:52:41,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:41,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:52:41,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:52:41,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:41" (1/1) ... [2023-11-24 21:52:41,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b18505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:41, skipping insertion in model container [2023-11-24 21:52:41,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:41" (1/1) ... [2023-11-24 21:52:41,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:52:42,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:42,065 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:52:42,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:42,201 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:52:42,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42 WrapperNode [2023-11-24 21:52:42,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:42,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:42,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:52:42,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:52:42,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,257 INFO L138 Inliner]: procedures = 164, calls = 65, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 133 [2023-11-24 21:52:42,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:42,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:52:42,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:52:42,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:52:42,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,326 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 5, 5, 2, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 1, 1]. [2023-11-24 21:52:42,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:52:42,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:52:42,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:52:42,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:52:42,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (1/1) ... [2023-11-24 21:52:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:42,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:52:42,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:52:42,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:52:42,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:52:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:52:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:52:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:52:42,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:52:42,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:52:42,475 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-24 21:52:42,475 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-24 21:52:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:52:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:52:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:52:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:52:42,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:52:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:52:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-24 21:52:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-24 21:52:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:52:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:52:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:52:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:52:42,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:52:42,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:52:42,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:52:42,481 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:52:42,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:52:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:52:42,485 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:52:42,725 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:52:42,727 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:52:43,164 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:43,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:43,428 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:52:43,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:43 BoogieIcfgContainer [2023-11-24 21:52:43,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:43,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:43,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:43,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:43,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:52:41" (1/3) ... [2023-11-24 21:52:43,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:43, skipping insertion in model container [2023-11-24 21:52:43,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:42" (2/3) ... [2023-11-24 21:52:43,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:43, skipping insertion in model container [2023-11-24 21:52:43,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:43" (3/3) ... [2023-11-24 21:52:43,439 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-24 21:52:43,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:43,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-24 21:52:43,466 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:52:43,543 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:52:43,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 228 flow [2023-11-24 21:52:43,636 INFO L124 PetriNetUnfolderBase]: 8/105 cut-off events. [2023-11-24 21:52:43,637 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:52:43,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 8/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-24 21:52:43,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 228 flow [2023-11-24 21:52:43,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 104 transitions, 220 flow [2023-11-24 21:52:43,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:43,665 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;@23d2cd5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:43,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-24 21:52:43,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:52:43,670 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:52:43,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:43,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:43,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:43,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:43,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash 15392, now seen corresponding path program 1 times [2023-11-24 21:52:43,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:43,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282346695] [2023-11-24 21:52:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282346695] [2023-11-24 21:52:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282346695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:44,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:44,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13510219] [2023-11-24 21:52:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:44,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:44,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:44,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:44,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:44,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:45,968 INFO L124 PetriNetUnfolderBase]: 4788/9444 cut-off events. [2023-11-24 21:52:45,968 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-24 21:52:45,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17003 conditions, 9444 events. 4788/9444 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 70042 event pairs, 4788 based on Foata normal form. 790/10142 useless extension candidates. Maximal degree in co-relation 16896. Up to 7521 conditions per place. [2023-11-24 21:52:46,055 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 50 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-24 21:52:46,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 296 flow [2023-11-24 21:52:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-11-24 21:52:46,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669781931464174 [2023-11-24 21:52:46,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-11-24 21:52:46,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-11-24 21:52:46,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:46,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-11-24 21:52:46,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,086 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 220 flow. Second operand 3 states and 182 transitions. [2023-11-24 21:52:46,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 296 flow [2023-11-24 21:52:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:46,099 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 188 flow [2023-11-24 21:52:46,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-11-24 21:52:46,105 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -8 predicate places. [2023-11-24 21:52:46,106 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 188 flow [2023-11-24 21:52:46,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:46,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:46,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:52:46,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:46,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 15393, now seen corresponding path program 1 times [2023-11-24 21:52:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847862566] [2023-11-24 21:52:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:46,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847862566] [2023-11-24 21:52:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847862566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:46,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:46,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664665657] [2023-11-24 21:52:46,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:46,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:46,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-11-24 21:52:46,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:46,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-11-24 21:52:46,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:47,557 INFO L124 PetriNetUnfolderBase]: 4608/9163 cut-off events. [2023-11-24 21:52:47,557 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 21:52:47,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16420 conditions, 9163 events. 4608/9163 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 68193 event pairs, 4608 based on Foata normal form. 101/9172 useless extension candidates. Maximal degree in co-relation 16410. Up to 7240 conditions per place. [2023-11-24 21:52:47,628 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 48 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-24 21:52:47,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 284 flow [2023-11-24 21:52:47,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-24 21:52:47,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545171339563862 [2023-11-24 21:52:47,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-24 21:52:47,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-24 21:52:47,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:47,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-24 21:52:47,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,646 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 188 flow. Second operand 3 states and 178 transitions. [2023-11-24 21:52:47,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 284 flow [2023-11-24 21:52:47,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:47,655 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 184 flow [2023-11-24 21:52:47,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-24 21:52:47,657 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -10 predicate places. [2023-11-24 21:52:47,658 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 184 flow [2023-11-24 21:52:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:47,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:52:47,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:47,661 INFO L85 PathProgramCache]: Analyzing trace with hash 459064573, now seen corresponding path program 1 times [2023-11-24 21:52:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300667324] [2023-11-24 21:52:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:47,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300667324] [2023-11-24 21:52:47,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300667324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:47,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:47,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517884763] [2023-11-24 21:52:47,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:47,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:47,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:47,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:48,916 INFO L124 PetriNetUnfolderBase]: 4626/9177 cut-off events. [2023-11-24 21:52:48,917 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:52:48,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 9177 events. 4626/9177 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 68216 event pairs, 4626 based on Foata normal form. 0/9111 useless extension candidates. Maximal degree in co-relation 16462. Up to 7278 conditions per place. [2023-11-24 21:52:48,991 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 50 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-24 21:52:48,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 284 flow [2023-11-24 21:52:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-24 21:52:48,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2023-11-24 21:52:48,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-24 21:52:48,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-24 21:52:48,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:48,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-24 21:52:48,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,002 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 184 flow. Second operand 3 states and 174 transitions. [2023-11-24 21:52:49,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 284 flow [2023-11-24 21:52:49,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:49,008 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 180 flow [2023-11-24 21:52:49,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-11-24 21:52:49,011 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -12 predicate places. [2023-11-24 21:52:49,011 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 180 flow [2023-11-24 21:52:49,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:49,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:49,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:52:49,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 459064574, now seen corresponding path program 1 times [2023-11-24 21:52:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205461108] [2023-11-24 21:52:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205461108] [2023-11-24 21:52:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205461108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:49,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:49,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554052919] [2023-11-24 21:52:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:49,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-11-24 21:52:49,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:49,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-11-24 21:52:49,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:50,430 INFO L124 PetriNetUnfolderBase]: 4608/9137 cut-off events. [2023-11-24 21:52:50,431 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 21:52:50,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16394 conditions, 9137 events. 4608/9137 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 67950 event pairs, 4608 based on Foata normal form. 20/9091 useless extension candidates. Maximal degree in co-relation 16384. Up to 7240 conditions per place. [2023-11-24 21:52:50,507 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 48 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-24 21:52:50,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 276 flow [2023-11-24 21:52:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-24 21:52:50,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545171339563862 [2023-11-24 21:52:50,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-24 21:52:50,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-24 21:52:50,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:50,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-24 21:52:50,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,513 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 180 flow. Second operand 3 states and 178 transitions. [2023-11-24 21:52:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 276 flow [2023-11-24 21:52:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:50,517 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 176 flow [2023-11-24 21:52:50,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-11-24 21:52:50,519 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -14 predicate places. [2023-11-24 21:52:50,519 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 176 flow [2023-11-24 21:52:50,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:50,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:52:50,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1758963368, now seen corresponding path program 1 times [2023-11-24 21:52:50,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635126369] [2023-11-24 21:52:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635126369] [2023-11-24 21:52:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635126369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:50,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641051951] [2023-11-24 21:52:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:50,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:50,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:50,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:51,870 INFO L124 PetriNetUnfolderBase]: 5526/9920 cut-off events. [2023-11-24 21:52:51,870 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:51,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18615 conditions, 9920 events. 5526/9920 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 70616 event pairs, 1275 based on Foata normal form. 0/9599 useless extension candidates. Maximal degree in co-relation 18605. Up to 5198 conditions per place. [2023-11-24 21:52:51,948 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 102 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-11-24 21:52:51,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 553 flow [2023-11-24 21:52:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:52:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 327 transitions. [2023-11-24 21:52:51,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611214953271028 [2023-11-24 21:52:51,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 327 transitions. [2023-11-24 21:52:51,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 327 transitions. [2023-11-24 21:52:51,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:51,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 327 transitions. [2023-11-24 21:52:51,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.4) internal successors, (327), 5 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,955 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,955 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 176 flow. Second operand 5 states and 327 transitions. [2023-11-24 21:52:51,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 553 flow [2023-11-24 21:52:51,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:51,961 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 296 flow [2023-11-24 21:52:51,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2023-11-24 21:52:51,962 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -8 predicate places. [2023-11-24 21:52:51,962 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 296 flow [2023-11-24 21:52:51,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:51,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:51,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:52:51,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:51,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash -943295389, now seen corresponding path program 1 times [2023-11-24 21:52:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146174627] [2023-11-24 21:52:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146174627] [2023-11-24 21:52:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146174627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:52,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159024382] [2023-11-24 21:52:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:52,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-24 21:52:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:52,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-24 21:52:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:53,050 INFO L124 PetriNetUnfolderBase]: 2893/6186 cut-off events. [2023-11-24 21:52:53,050 INFO L125 PetriNetUnfolderBase]: For 1521/1629 co-relation queries the response was YES. [2023-11-24 21:52:53,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 6186 events. 2893/6186 cut-off events. For 1521/1629 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 45695 event pairs, 781 based on Foata normal form. 220/6392 useless extension candidates. Maximal degree in co-relation 8523. Up to 3317 conditions per place. [2023-11-24 21:52:53,098 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 102 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2023-11-24 21:52:53,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 687 flow [2023-11-24 21:52:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:52:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2023-11-24 21:52:53,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.633177570093458 [2023-11-24 21:52:53,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 271 transitions. [2023-11-24 21:52:53,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 271 transitions. [2023-11-24 21:52:53,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:53,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 271 transitions. [2023-11-24 21:52:53,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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) [2023-11-24 21:52:53,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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) [2023-11-24 21:52:53,106 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 296 flow. Second operand 4 states and 271 transitions. [2023-11-24 21:52:53,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 687 flow [2023-11-24 21:52:53,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 147 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:52:53,133 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 332 flow [2023-11-24 21:52:53,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2023-11-24 21:52:53,134 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-24 21:52:53,134 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 332 flow [2023-11-24 21:52:53,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:53,135 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] [2023-11-24 21:52:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:52:53,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:53,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2024720930, now seen corresponding path program 1 times [2023-11-24 21:52:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:53,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755036453] [2023-11-24 21:52:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:53,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755036453] [2023-11-24 21:52:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755036453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:53,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:53,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747677443] [2023-11-24 21:52:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:53,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:53,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:53,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:53,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:54,440 INFO L124 PetriNetUnfolderBase]: 3323/6515 cut-off events. [2023-11-24 21:52:54,440 INFO L125 PetriNetUnfolderBase]: For 2382/2382 co-relation queries the response was YES. [2023-11-24 21:52:54,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 6515 events. 3323/6515 cut-off events. For 2382/2382 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 45318 event pairs, 1615 based on Foata normal form. 100/6600 useless extension candidates. Maximal degree in co-relation 9853. Up to 3062 conditions per place. [2023-11-24 21:52:54,498 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 114 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2023-11-24 21:52:54,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 176 transitions, 877 flow [2023-11-24 21:52:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:52:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:52:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-11-24 21:52:54,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763239875389408 [2023-11-24 21:52:54,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-11-24 21:52:54,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-11-24 21:52:54,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:54,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-11-24 21:52:54,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 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) [2023-11-24 21:52:54,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:54,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:54,507 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 332 flow. Second operand 6 states and 370 transitions. [2023-11-24 21:52:54,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 176 transitions, 877 flow [2023-11-24 21:52:54,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 176 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:52:54,545 INFO L231 Difference]: Finished difference. Result has 105 places, 115 transitions, 536 flow [2023-11-24 21:52:54,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=105, PETRI_TRANSITIONS=115} [2023-11-24 21:52:54,547 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-11-24 21:52:54,547 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 115 transitions, 536 flow [2023-11-24 21:52:54,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:54,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:54,548 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] [2023-11-24 21:52:54,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:52:54,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:54,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash -750259950, now seen corresponding path program 1 times [2023-11-24 21:52:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303536321] [2023-11-24 21:52:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:54,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:54,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303536321] [2023-11-24 21:52:54,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303536321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:54,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:54,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:54,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250300416] [2023-11-24 21:52:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:54,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:54,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 115 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:54,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:54,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:54,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:55,874 INFO L124 PetriNetUnfolderBase]: 3359/6516 cut-off events. [2023-11-24 21:52:55,874 INFO L125 PetriNetUnfolderBase]: For 6240/6240 co-relation queries the response was YES. [2023-11-24 21:52:55,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17334 conditions, 6516 events. 3359/6516 cut-off events. For 6240/6240 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45513 event pairs, 834 based on Foata normal form. 44/6550 useless extension candidates. Maximal degree in co-relation 9862. Up to 3764 conditions per place. [2023-11-24 21:52:55,942 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 126 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2023-11-24 21:52:55,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 1349 flow [2023-11-24 21:52:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:52:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-11-24 21:52:55,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2023-11-24 21:52:55,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-11-24 21:52:55,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-11-24 21:52:55,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:55,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-11-24 21:52:55,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:55,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:55,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:55,950 INFO L175 Difference]: Start difference. First operand has 105 places, 115 transitions, 536 flow. Second operand 5 states and 320 transitions. [2023-11-24 21:52:55,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 1349 flow [2023-11-24 21:52:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 1311 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:55,982 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 887 flow [2023-11-24 21:52:55,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=887, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2023-11-24 21:52:55,986 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 8 predicate places. [2023-11-24 21:52:55,986 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 887 flow [2023-11-24 21:52:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:55,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:55,987 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] [2023-11-24 21:52:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:52:55,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:55,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1804268235, now seen corresponding path program 1 times [2023-11-24 21:52:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:55,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350922306] [2023-11-24 21:52:55,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350922306] [2023-11-24 21:52:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350922306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:56,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528402137] [2023-11-24 21:52:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:56,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:56,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-24 21:52:56,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 887 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:56,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:56,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-24 21:52:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:57,041 INFO L124 PetriNetUnfolderBase]: 1798/4037 cut-off events. [2023-11-24 21:52:57,041 INFO L125 PetriNetUnfolderBase]: For 4503/4547 co-relation queries the response was YES. [2023-11-24 21:52:57,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 4037 events. 1798/4037 cut-off events. For 4503/4547 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 28156 event pairs, 577 based on Foata normal form. 407/4374 useless extension candidates. Maximal degree in co-relation 8530. Up to 1812 conditions per place. [2023-11-24 21:52:57,085 INFO L140 encePairwiseOnDemand]: 88/107 looper letters, 97 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2023-11-24 21:52:57,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 169 transitions, 1246 flow [2023-11-24 21:52:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:52:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-24 21:52:57,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285046728971962 [2023-11-24 21:52:57,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-24 21:52:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-24 21:52:57,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:57,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-24 21:52:57,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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) [2023-11-24 21:52:57,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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) [2023-11-24 21:52:57,091 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 887 flow. Second operand 4 states and 269 transitions. [2023-11-24 21:52:57,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 169 transitions, 1246 flow [2023-11-24 21:52:57,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1209 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-24 21:52:57,134 INFO L231 Difference]: Finished difference. Result has 114 places, 142 transitions, 896 flow [2023-11-24 21:52:57,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=896, PETRI_PLACES=114, PETRI_TRANSITIONS=142} [2023-11-24 21:52:57,135 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2023-11-24 21:52:57,135 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 142 transitions, 896 flow [2023-11-24 21:52:57,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:57,136 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] [2023-11-24 21:52:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:52:57,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:57,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 961234539, now seen corresponding path program 1 times [2023-11-24 21:52:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663271344] [2023-11-24 21:52:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:57,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:57,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663271344] [2023-11-24 21:52:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663271344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406519600] [2023-11-24 21:52:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:57,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-24 21:52:57,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 142 transitions, 896 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:57,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-24 21:52:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:58,197 INFO L124 PetriNetUnfolderBase]: 1265/3070 cut-off events. [2023-11-24 21:52:58,197 INFO L125 PetriNetUnfolderBase]: For 3834/3855 co-relation queries the response was YES. [2023-11-24 21:52:58,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9633 conditions, 3070 events. 1265/3070 cut-off events. For 3834/3855 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19884 event pairs, 326 based on Foata normal form. 86/3147 useless extension candidates. Maximal degree in co-relation 6876. Up to 2164 conditions per place. [2023-11-24 21:52:58,225 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 84 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2023-11-24 21:52:58,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 965 flow [2023-11-24 21:52:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:52:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-24 21:52:58,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560747663551402 [2023-11-24 21:52:58,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-24 21:52:58,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-24 21:52:58,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:58,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-24 21:52:58,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:58,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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) [2023-11-24 21:52:58,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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) [2023-11-24 21:52:58,232 INFO L175 Difference]: Start difference. First operand has 114 places, 142 transitions, 896 flow. Second operand 4 states and 238 transitions. [2023-11-24 21:52:58,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 965 flow [2023-11-24 21:52:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 132 transitions, 840 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-24 21:52:58,247 INFO L231 Difference]: Finished difference. Result has 101 places, 117 transitions, 619 flow [2023-11-24 21:52:58,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=619, PETRI_PLACES=101, PETRI_TRANSITIONS=117} [2023-11-24 21:52:58,249 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2023-11-24 21:52:58,249 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 117 transitions, 619 flow [2023-11-24 21:52:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:58,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:58,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:58,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:52:58,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:58,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2026178739, now seen corresponding path program 1 times [2023-11-24 21:52:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561956675] [2023-11-24 21:52:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561956675] [2023-11-24 21:52:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561956675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:52:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219294644] [2023-11-24 21:52:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:52:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:52:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:52:58,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-24 21:52:58,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 117 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:58,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:58,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-24 21:52:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:58,931 INFO L124 PetriNetUnfolderBase]: 808/2058 cut-off events. [2023-11-24 21:52:58,931 INFO L125 PetriNetUnfolderBase]: For 2017/2017 co-relation queries the response was YES. [2023-11-24 21:52:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 2058 events. 808/2058 cut-off events. For 2017/2017 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12117 event pairs, 294 based on Foata normal form. 56/2107 useless extension candidates. Maximal degree in co-relation 4495. Up to 1095 conditions per place. [2023-11-24 21:52:58,946 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 100 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2023-11-24 21:52:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1011 flow [2023-11-24 21:52:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:52:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:52:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-24 21:52:58,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771028037383178 [2023-11-24 21:52:58,948 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-24 21:52:58,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-24 21:52:58,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:58,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-24 21:52:58,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:58,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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) [2023-11-24 21:52:58,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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) [2023-11-24 21:52:58,951 INFO L175 Difference]: Start difference. First operand has 101 places, 117 transitions, 619 flow. Second operand 4 states and 247 transitions. [2023-11-24 21:52:58,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1011 flow [2023-11-24 21:52:58,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 966 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:58,961 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 587 flow [2023-11-24 21:52:58,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-11-24 21:52:58,962 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2023-11-24 21:52:58,962 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 587 flow [2023-11-24 21:52:58,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:58,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:58,963 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] [2023-11-24 21:52:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:52:58,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:58,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1959771180, now seen corresponding path program 1 times [2023-11-24 21:52:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825705785] [2023-11-24 21:52:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825705785] [2023-11-24 21:52:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825705785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:59,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787129939] [2023-11-24 21:52:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:59,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:59,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:59,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-24 21:52:59,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:59,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:59,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-24 21:52:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:59,540 INFO L124 PetriNetUnfolderBase]: 875/2061 cut-off events. [2023-11-24 21:52:59,541 INFO L125 PetriNetUnfolderBase]: For 1650/1650 co-relation queries the response was YES. [2023-11-24 21:52:59,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 2061 events. 875/2061 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11633 event pairs, 513 based on Foata normal form. 12/2061 useless extension candidates. Maximal degree in co-relation 3111. Up to 1276 conditions per place. [2023-11-24 21:52:59,555 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 90 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2023-11-24 21:52:59,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 1071 flow [2023-11-24 21:52:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:52:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:52:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 324 transitions. [2023-11-24 21:52:59,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046728971962616 [2023-11-24 21:52:59,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 324 transitions. [2023-11-24 21:52:59,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 324 transitions. [2023-11-24 21:52:59,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:59,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 324 transitions. [2023-11-24 21:52:59,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:59,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:59,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:59,562 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 587 flow. Second operand 6 states and 324 transitions. [2023-11-24 21:52:59,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 1071 flow [2023-11-24 21:52:59,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 155 transitions, 1045 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:52:59,571 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 706 flow [2023-11-24 21:52:59,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2023-11-24 21:52:59,572 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-24 21:52:59,572 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 706 flow [2023-11-24 21:52:59,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:59,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:59,573 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:52:59,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-24 21:52:59,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1770037650, now seen corresponding path program 1 times [2023-11-24 21:52:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95460520] [2023-11-24 21:52:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:59,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:00,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:00,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95460520] [2023-11-24 21:53:00,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95460520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:00,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:00,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5006701] [2023-11-24 21:53:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:00,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-24 21:53:00,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:00,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-24 21:53:00,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:00,527 INFO L124 PetriNetUnfolderBase]: 800/1984 cut-off events. [2023-11-24 21:53:00,528 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2023-11-24 21:53:00,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 1984 events. 800/1984 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11503 event pairs, 670 based on Foata normal form. 1/1968 useless extension candidates. Maximal degree in co-relation 995. Up to 1659 conditions per place. [2023-11-24 21:53:00,536 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2023-11-24 21:53:00,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 860 flow [2023-11-24 21:53:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:53:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2023-11-24 21:53:00,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116822429906542 [2023-11-24 21:53:00,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 219 transitions. [2023-11-24 21:53:00,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 219 transitions. [2023-11-24 21:53:00,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:00,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 219 transitions. [2023-11-24 21:53:00,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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) [2023-11-24 21:53:00,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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) [2023-11-24 21:53:00,541 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 706 flow. Second operand 4 states and 219 transitions. [2023-11-24 21:53:00,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 860 flow [2023-11-24 21:53:00,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 119 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:53:00,549 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2023-11-24 21:53:00,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2023-11-24 21:53:00,550 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2023-11-24 21:53:00,550 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2023-11-24 21:53:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-24 21:53:00,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-24 21:53:00,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-24 21:53:00,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-24 21:53:00,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2023-11-24 21:53:00,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2023-11-24 21:53:00,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2023-11-24 21:53:00,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-24 21:53:00,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-24 21:53:00,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:53:00,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:00,560 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:53:00,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:53:00,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:53:00 BasicIcfg [2023-11-24 21:53:00,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:53:00,566 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:53:00,567 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:53:00,567 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:53:00,567 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:43" (3/4) ... [2023-11-24 21:53:00,569 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:53:00,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-24 21:53:00,574 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-24 21:53:00,579 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2023-11-24 21:53:00,579 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-24 21:53:00,579 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:53:00,579 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:53:00,670 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:53:00,671 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:53:00,671 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:53:00,672 INFO L158 Benchmark]: Toolchain (without parser) took 19146.55ms. Allocated memory was 136.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 104.1MB in the beginning and 938.8MB in the end (delta: -834.7MB). Peak memory consumption was 589.7MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,672 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:00,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.62ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 83.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.69ms. Allocated memory is still 136.3MB. Free memory was 83.6MB in the beginning and 81.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,673 INFO L158 Benchmark]: Boogie Preprocessor took 116.31ms. Allocated memory is still 136.3MB. Free memory was 81.1MB in the beginning and 78.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,673 INFO L158 Benchmark]: RCFGBuilder took 1053.75ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 78.1MB in the beginning and 119.1MB in the end (delta: -41.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,674 INFO L158 Benchmark]: TraceAbstraction took 17134.01ms. Allocated memory was 176.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 117.9MB in the beginning and 943.0MB in the end (delta: -825.1MB). Peak memory consumption was 557.8MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,674 INFO L158 Benchmark]: Witness Printer took 104.61ms. Allocated memory is still 1.6GB. Free memory was 943.0MB in the beginning and 938.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:00,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.62ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 83.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.69ms. Allocated memory is still 136.3MB. Free memory was 83.6MB in the beginning and 81.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.31ms. Allocated memory is still 136.3MB. Free memory was 81.1MB in the beginning and 78.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1053.75ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 78.1MB in the beginning and 119.1MB in the end (delta: -41.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17134.01ms. Allocated memory was 176.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 117.9MB in the beginning and 943.0MB in the end (delta: -825.1MB). Peak memory consumption was 557.8MB. Max. memory is 16.1GB. * Witness Printer took 104.61ms. Allocated memory is still 1.6GB. Free memory was 943.0MB in the beginning and 938.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 707]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 15 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: 17.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 846 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 741 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1850 IncrementalHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 30 mSDtfsCounter, 1850 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=896occurred in iteration=9, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 2177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:53:00,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1edfde83-cd87-4e77-8743-0714b03dfe4d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE