./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd --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 c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:56:04,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:56:04,129 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:56:04,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:56:04,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:56:04,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:56:04,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:56:04,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:56:04,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:56:04,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:56:04,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:56:04,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:56:04,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:56:04,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:56:04,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:56:04,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:56:04,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:56:04,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:56:04,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:56:04,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:56:04,184 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd 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 -> c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 [2024-11-13 14:56:04,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:56:04,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:56:04,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:56:04,491 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:56:04,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:56:04,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i Unable to find full path for "g++" [2024-11-13 14:56:06,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:56:06,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:56:06,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i [2024-11-13 14:56:06,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/data/d0544db55/a4cc4f256eea4bd0a12a37498d3984ca/FLAGb3e3fc24c [2024-11-13 14:56:06,805 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/data/d0544db55/a4cc4f256eea4bd0a12a37498d3984ca [2024-11-13 14:56:06,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:56:06,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:56:06,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:56:06,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:56:06,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:56:06,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:56:06" (1/1) ... [2024-11-13 14:56:06,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d75113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:06, skipping insertion in model container [2024-11-13 14:56:06,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:56:06" (1/1) ... [2024-11-13 14:56:06,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:56:07,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:56:07,615 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:56:07,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:56:07,776 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:56:07,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07 WrapperNode [2024-11-13 14:56:07,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:56:07,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:56:07,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:56:07,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:56:07,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,837 INFO L138 Inliner]: procedures = 372, calls = 118, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 208 [2024-11-13 14:56:07,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:56:07,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:56:07,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:56:07,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:56:07,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,872 INFO L175 MemorySlicer]: Split 108 memory accesses to 3 slices as follows [80, 14, 14]. 74 percent of accesses are in the largest equivalence class. The 90 initializations are split as follows [80, 10, 0]. The 11 writes are split as follows [0, 1, 10]. [2024-11-13 14:56:07,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:56:07,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:56:07,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:56:07,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:56:07,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (1/1) ... [2024-11-13 14:56:07,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:56:07,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:07,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:56:07,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:56:07,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:56:07,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 14:56:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:56:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:56:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:56:07,962 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:56:08,140 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:56:08,142 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:56:08,730 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:56:08,730 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:56:09,486 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:56:09,486 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:56:09,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:09 BoogieIcfgContainer [2024-11-13 14:56:09,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:56:09,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:56:09,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:56:09,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:56:09,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:56:06" (1/3) ... [2024-11-13 14:56:09,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cefa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:56:09, skipping insertion in model container [2024-11-13 14:56:09,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:56:07" (2/3) ... [2024-11-13 14:56:09,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cefa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:56:09, skipping insertion in model container [2024-11-13 14:56:09,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:09" (3/3) ... [2024-11-13 14:56:09,498 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_11-arraylist_nr-deref.i [2024-11-13 14:56:09,519 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:56:09,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_11-arraylist_nr-deref.i that has 2 procedures, 71 locations, 1 initial locations, 1 loop locations, and 37 error locations. [2024-11-13 14:56:09,521 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:56:09,598 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:56:09,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 71 transitions, 146 flow [2024-11-13 14:56:09,702 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-11-13 14:56:09,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:56:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-13 14:56:09,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 71 transitions, 146 flow [2024-11-13 14:56:09,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 70 transitions, 143 flow [2024-11-13 14:56:09,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:56:09,744 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@438f5520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:56:09,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-13 14:56:09,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:56:09,755 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 14:56:09,755 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:56:09,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:09,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:56:09,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:09,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 557743, now seen corresponding path program 1 times [2024-11-13 14:56:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692054076] [2024-11-13 14:56:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692054076] [2024-11-13 14:56:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692054076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:10,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:56:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356690271] [2024-11-13 14:56:10,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:10,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:56:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:56:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:56:10,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-13 14:56:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:10,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-13 14:56:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:10,467 INFO L124 PetriNetUnfolderBase]: 64/266 cut-off events. [2024-11-13 14:56:10,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:56:10,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 266 events. 64/266 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1213 event pairs, 63 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 376. Up to 153 conditions per place. [2024-11-13 14:56:10,476 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-13 14:56:10,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 199 flow [2024-11-13 14:56:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-13 14:56:10,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7652582159624414 [2024-11-13 14:56:10,497 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 143 flow. Second operand 3 states and 163 transitions. [2024-11-13 14:56:10,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 199 flow [2024-11-13 14:56:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:56:10,511 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 154 flow [2024-11-13 14:56:10,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-13 14:56:10,517 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-11-13 14:56:10,517 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 154 flow [2024-11-13 14:56:10,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:10,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:10,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 14:56:10,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:56:10,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:10,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 17287792, now seen corresponding path program 1 times [2024-11-13 14:56:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:10,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405818328] [2024-11-13 14:56:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405818328] [2024-11-13 14:56:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405818328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764618412] [2024-11-13 14:56:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:10,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:10,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:10,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:56:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:10,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:56:10,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:10,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:56:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764618412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:56:10,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:56:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 14:56:10,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479462519] [2024-11-13 14:56:10,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:56:10,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:10,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-13 14:56:10,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:10,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:10,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-13 14:56:10,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:11,120 INFO L124 PetriNetUnfolderBase]: 64/269 cut-off events. [2024-11-13 14:56:11,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:56:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 269 events. 64/269 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1213 event pairs, 63 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 428. Up to 153 conditions per place. [2024-11-13 14:56:11,124 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-11-13 14:56:11,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 226 flow [2024-11-13 14:56:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:56:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:56:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-13 14:56:11,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7112676056338029 [2024-11-13 14:56:11,128 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 154 flow. Second operand 6 states and 303 transitions. [2024-11-13 14:56:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 226 flow [2024-11-13 14:56:11,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 222 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 14:56:11,131 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 186 flow [2024-11-13 14:56:11,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-11-13 14:56:11,132 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-13 14:56:11,132 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 186 flow [2024-11-13 14:56:11,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:11,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:11,132 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2024-11-13 14:56:11,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:56:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:11,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:11,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -377689361, now seen corresponding path program 2 times [2024-11-13 14:56:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125228823] [2024-11-13 14:56:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:56:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125228823] [2024-11-13 14:56:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125228823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:11,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:56:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773964810] [2024-11-13 14:56:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:11,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:56:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:56:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:56:11,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 71 [2024-11-13 14:56:11,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:11,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:11,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 71 [2024-11-13 14:56:11,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:11,797 INFO L124 PetriNetUnfolderBase]: 64/265 cut-off events. [2024-11-13 14:56:11,797 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:56:11,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 265 events. 64/265 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1196 event pairs, 63 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 417. Up to 155 conditions per place. [2024-11-13 14:56:11,801 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 28 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-13 14:56:11,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 242 flow [2024-11-13 14:56:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-13 14:56:11,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995305164319249 [2024-11-13 14:56:11,805 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 186 flow. Second operand 3 states and 149 transitions. [2024-11-13 14:56:11,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 242 flow [2024-11-13 14:56:11,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 228 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 14:56:11,810 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 172 flow [2024-11-13 14:56:11,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-13 14:56:11,811 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-13 14:56:11,812 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 172 flow [2024-11-13 14:56:11,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:11,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:11,812 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2024-11-13 14:56:11,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:56:11,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:11,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -377689360, now seen corresponding path program 1 times [2024-11-13 14:56:11,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:11,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755510778] [2024-11-13 14:56:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755510778] [2024-11-13 14:56:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755510778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:12,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342198370] [2024-11-13 14:56:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:12,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:12,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:12,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:12,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:56:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:12,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:56:12,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:12,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:56:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:56:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342198370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:56:12,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:56:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-13 14:56:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268284934] [2024-11-13 14:56:12,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:56:12,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:56:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:56:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:56:12,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-13 14:56:12,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 172 flow. Second operand has 13 states, 13 states have (on average 46.07692307692308) internal successors, (599), 13 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:12,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:12,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-13 14:56:12,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:12,539 INFO L124 PetriNetUnfolderBase]: 64/271 cut-off events. [2024-11-13 14:56:12,539 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-13 14:56:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 271 events. 64/271 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1199 event pairs, 63 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 419. Up to 153 conditions per place. [2024-11-13 14:56:12,542 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-11-13 14:56:12,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 280 flow [2024-11-13 14:56:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:56:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:56:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 582 transitions. [2024-11-13 14:56:12,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6830985915492958 [2024-11-13 14:56:12,545 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 172 flow. Second operand 12 states and 582 transitions. [2024-11-13 14:56:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 280 flow [2024-11-13 14:56:12,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 76 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:56:12,549 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 248 flow [2024-11-13 14:56:12,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-11-13 14:56:12,550 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2024-11-13 14:56:12,550 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 248 flow [2024-11-13 14:56:12,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.07692307692308) internal successors, (599), 13 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:12,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:12,551 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2024-11-13 14:56:12,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:56:12,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:12,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:12,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1107430224, now seen corresponding path program 2 times [2024-11-13 14:56:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584774218] [2024-11-13 14:56:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584774218] [2024-11-13 14:56:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584774218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:56:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125842958] [2024-11-13 14:56:13,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:13,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:56:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:56:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:56:13,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 71 [2024-11-13 14:56:13,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:13,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:13,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 71 [2024-11-13 14:56:13,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:13,239 INFO L124 PetriNetUnfolderBase]: 64/267 cut-off events. [2024-11-13 14:56:13,239 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-13 14:56:13,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 267 events. 64/267 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1178 event pairs, 63 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 417. Up to 161 conditions per place. [2024-11-13 14:56:13,244 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 32 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-13 14:56:13,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 72 transitions, 312 flow [2024-11-13 14:56:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-13 14:56:13,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2024-11-13 14:56:13,246 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 248 flow. Second operand 3 states and 153 transitions. [2024-11-13 14:56:13,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 72 transitions, 312 flow [2024-11-13 14:56:13,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 72 transitions, 264 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-13 14:56:13,253 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 200 flow [2024-11-13 14:56:13,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-11-13 14:56:13,256 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-13 14:56:13,256 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 200 flow [2024-11-13 14:56:13,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:13,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:13,256 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2024-11-13 14:56:13,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:56:13,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:13,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash -911428688, now seen corresponding path program 1 times [2024-11-13 14:56:13,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:13,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287808905] [2024-11-13 14:56:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:13,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287808905] [2024-11-13 14:56:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287808905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519074427] [2024-11-13 14:56:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:13,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:13,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-13 14:56:13,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:13,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:13,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-13 14:56:13,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:13,943 INFO L124 PetriNetUnfolderBase]: 73/289 cut-off events. [2024-11-13 14:56:13,943 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-13 14:56:13,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 289 events. 73/289 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1306 event pairs, 72 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 464. Up to 183 conditions per place. [2024-11-13 14:56:13,947 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 38 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2024-11-13 14:56:13,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 68 transitions, 270 flow [2024-11-13 14:56:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-13 14:56:13,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6901408450704225 [2024-11-13 14:56:13,950 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 200 flow. Second operand 3 states and 147 transitions. [2024-11-13 14:56:13,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 68 transitions, 270 flow [2024-11-13 14:56:13,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:56:13,957 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 186 flow [2024-11-13 14:56:13,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-11-13 14:56:13,958 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-13 14:56:13,960 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 186 flow [2024-11-13 14:56:13,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:13,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:13,960 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2024-11-13 14:56:13,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:56:13,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:13,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash -911428687, now seen corresponding path program 1 times [2024-11-13 14:56:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33953301] [2024-11-13 14:56:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33953301] [2024-11-13 14:56:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33953301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:14,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:14,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:56:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766712666] [2024-11-13 14:56:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:14,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:14,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 71 [2024-11-13 14:56:14,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:14,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:14,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 71 [2024-11-13 14:56:14,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:14,798 INFO L124 PetriNetUnfolderBase]: 73/285 cut-off events. [2024-11-13 14:56:14,799 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-13 14:56:14,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 285 events. 73/285 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1291 event pairs, 63 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 488. Up to 148 conditions per place. [2024-11-13 14:56:14,801 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 37 selfloop transitions, 6 changer transitions 3/74 dead transitions. [2024-11-13 14:56:14,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 290 flow [2024-11-13 14:56:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:56:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-13 14:56:14,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309859154929578 [2024-11-13 14:56:14,803 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 186 flow. Second operand 5 states and 224 transitions. [2024-11-13 14:56:14,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 290 flow [2024-11-13 14:56:14,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:56:14,805 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 191 flow [2024-11-13 14:56:14,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-11-13 14:56:14,806 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-13 14:56:14,806 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 191 flow [2024-11-13 14:56:14,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:14,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:14,807 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:14,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:56:14,807 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:14,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash -119590449, now seen corresponding path program 1 times [2024-11-13 14:56:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:14,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868057662] [2024-11-13 14:56:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:14,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:15,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868057662] [2024-11-13 14:56:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868057662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:15,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:56:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009584198] [2024-11-13 14:56:15,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:15,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:15,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:15,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:15,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-13 14:56:15,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:15,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-13 14:56:15,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:15,902 INFO L124 PetriNetUnfolderBase]: 64/253 cut-off events. [2024-11-13 14:56:15,902 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-13 14:56:15,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 253 events. 64/253 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1094 event pairs, 54 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 454. Up to 126 conditions per place. [2024-11-13 14:56:15,904 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 38 selfloop transitions, 7 changer transitions 3/72 dead transitions. [2024-11-13 14:56:15,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 301 flow [2024-11-13 14:56:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:56:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:56:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 292 transitions. [2024-11-13 14:56:15,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875251509054326 [2024-11-13 14:56:15,905 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 191 flow. Second operand 7 states and 292 transitions. [2024-11-13 14:56:15,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 301 flow [2024-11-13 14:56:15,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 72 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:56:15,908 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 189 flow [2024-11-13 14:56:15,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-11-13 14:56:15,909 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-13 14:56:15,909 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 189 flow [2024-11-13 14:56:15,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:15,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:15,909 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:15,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:56:15,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:15,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -119590448, now seen corresponding path program 1 times [2024-11-13 14:56:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754811696] [2024-11-13 14:56:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:16,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:16,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754811696] [2024-11-13 14:56:16,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754811696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:16,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:16,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:56:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883099235] [2024-11-13 14:56:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:16,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:16,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:17,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-11-13 14:56:17,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 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) [2024-11-13 14:56:17,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-11-13 14:56:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:17,324 INFO L124 PetriNetUnfolderBase]: 64/251 cut-off events. [2024-11-13 14:56:17,324 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-13 14:56:17,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 251 events. 64/251 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1090 event pairs, 54 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 453. Up to 126 conditions per place. [2024-11-13 14:56:17,326 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 37 selfloop transitions, 7 changer transitions 3/70 dead transitions. [2024-11-13 14:56:17,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 297 flow [2024-11-13 14:56:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:56:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:56:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2024-11-13 14:56:17,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432595573440644 [2024-11-13 14:56:17,328 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 189 flow. Second operand 7 states and 270 transitions. [2024-11-13 14:56:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 297 flow [2024-11-13 14:56:17,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 283 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 14:56:17,330 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 185 flow [2024-11-13 14:56:17,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-11-13 14:56:17,331 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-11-13 14:56:17,331 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 185 flow [2024-11-13 14:56:17,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 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) [2024-11-13 14:56:17,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:17,331 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:17,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:56:17,332 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:17,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1037715501, now seen corresponding path program 1 times [2024-11-13 14:56:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286495303] [2024-11-13 14:56:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:17,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286495303] [2024-11-13 14:56:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286495303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:17,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:17,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571218398] [2024-11-13 14:56:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:17,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 71 [2024-11-13 14:56:17,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:17,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:17,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 71 [2024-11-13 14:56:17,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:17,943 INFO L124 PetriNetUnfolderBase]: 64/250 cut-off events. [2024-11-13 14:56:17,944 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-13 14:56:17,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 250 events. 64/250 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1094 event pairs, 63 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 450. Up to 158 conditions per place. [2024-11-13 14:56:17,945 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 30 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-13 14:56:17,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 60 transitions, 255 flow [2024-11-13 14:56:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:56:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-11-13 14:56:17,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957746478873239 [2024-11-13 14:56:17,948 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 185 flow. Second operand 5 states and 247 transitions. [2024-11-13 14:56:17,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 60 transitions, 255 flow [2024-11-13 14:56:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 60 transitions, 241 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 14:56:17,951 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 181 flow [2024-11-13 14:56:17,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-13 14:56:17,952 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-13 14:56:17,953 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 181 flow [2024-11-13 14:56:17,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:17,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:17,953 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:17,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:56:17,954 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:17,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1037715500, now seen corresponding path program 1 times [2024-11-13 14:56:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:17,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805425507] [2024-11-13 14:56:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805425507] [2024-11-13 14:56:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805425507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:18,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:18,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:56:18,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412186587] [2024-11-13 14:56:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:18,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:56:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:56:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:56:18,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-13 14:56:18,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-13 14:56:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:18,430 INFO L124 PetriNetUnfolderBase]: 64/249 cut-off events. [2024-11-13 14:56:18,430 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-13 14:56:18,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 249 events. 64/249 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1096 event pairs, 63 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 441. Up to 158 conditions per place. [2024-11-13 14:56:18,432 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 32 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-11-13 14:56:18,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 59 transitions, 255 flow [2024-11-13 14:56:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:56:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:56:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-11-13 14:56:18,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6169014084507042 [2024-11-13 14:56:18,434 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 181 flow. Second operand 5 states and 219 transitions. [2024-11-13 14:56:18,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 59 transitions, 255 flow [2024-11-13 14:56:18,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 59 transitions, 243 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:56:18,436 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 179 flow [2024-11-13 14:56:18,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-11-13 14:56:18,437 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-13 14:56:18,437 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 179 flow [2024-11-13 14:56:18,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:18,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:18,437 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:18,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:56:18,438 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:18,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1471333068, now seen corresponding path program 1 times [2024-11-13 14:56:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:18,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982622001] [2024-11-13 14:56:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:18,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:18,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:18,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982622001] [2024-11-13 14:56:18,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982622001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:18,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:56:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943722576] [2024-11-13 14:56:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:18,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:56:18,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:56:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:56:18,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-13 14:56:18,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:18,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:18,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-13 14:56:18,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:18,748 INFO L124 PetriNetUnfolderBase]: 71/259 cut-off events. [2024-11-13 14:56:18,750 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-13 14:56:18,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 259 events. 71/259 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1124 event pairs, 56 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 464. Up to 148 conditions per place. [2024-11-13 14:56:18,752 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 42 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-13 14:56:18,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 277 flow [2024-11-13 14:56:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-13 14:56:18,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7605633802816901 [2024-11-13 14:56:18,753 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 179 flow. Second operand 3 states and 162 transitions. [2024-11-13 14:56:18,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 277 flow [2024-11-13 14:56:18,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 265 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:56:18,758 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 167 flow [2024-11-13 14:56:18,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-11-13 14:56:18,759 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-11-13 14:56:18,761 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 167 flow [2024-11-13 14:56:18,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:18,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:18,761 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:18,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:56:18,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:18,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1471333067, now seen corresponding path program 1 times [2024-11-13 14:56:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79635675] [2024-11-13 14:56:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:18,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79635675] [2024-11-13 14:56:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79635675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:18,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:18,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:56:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080491934] [2024-11-13 14:56:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:18,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:56:18,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:56:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:56:18,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 71 [2024-11-13 14:56:18,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:18,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:18,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 71 [2024-11-13 14:56:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:19,121 INFO L124 PetriNetUnfolderBase]: 64/236 cut-off events. [2024-11-13 14:56:19,121 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-13 14:56:19,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 236 events. 64/236 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 970 event pairs, 56 based on Foata normal form. 16/223 useless extension candidates. Maximal degree in co-relation 436. Up to 148 conditions per place. [2024-11-13 14:56:19,123 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 41 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-11-13 14:56:19,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 263 flow [2024-11-13 14:56:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:56:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:56:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-13 14:56:19,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7699530516431925 [2024-11-13 14:56:19,125 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 167 flow. Second operand 3 states and 164 transitions. [2024-11-13 14:56:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 263 flow [2024-11-13 14:56:19,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:56:19,127 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 163 flow [2024-11-13 14:56:19,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-11-13 14:56:19,130 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-13 14:56:19,130 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 163 flow [2024-11-13 14:56:19,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:19,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:19,131 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:19,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:56:19,131 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:19,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1601432537, now seen corresponding path program 1 times [2024-11-13 14:56:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:19,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985809702] [2024-11-13 14:56:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985809702] [2024-11-13 14:56:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985809702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:19,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:56:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947006076] [2024-11-13 14:56:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:19,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:56:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:56:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:56:20,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 71 [2024-11-13 14:56:20,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 163 flow. Second operand has 9 states, 9 states have (on average 41.666666666666664) internal successors, (375), 9 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:20,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:20,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 71 [2024-11-13 14:56:20,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:20,600 INFO L124 PetriNetUnfolderBase]: 85/291 cut-off events. [2024-11-13 14:56:20,600 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-13 14:56:20,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 291 events. 85/291 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1292 event pairs, 60 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 541. Up to 152 conditions per place. [2024-11-13 14:56:20,605 INFO L140 encePairwiseOnDemand]: 59/71 looper letters, 44 selfloop transitions, 11 changer transitions 3/74 dead transitions. [2024-11-13 14:56:20,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 325 flow [2024-11-13 14:56:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:56:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 14:56:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 449 transitions. [2024-11-13 14:56:20,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6323943661971831 [2024-11-13 14:56:20,608 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 163 flow. Second operand 10 states and 449 transitions. [2024-11-13 14:56:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 325 flow [2024-11-13 14:56:20,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:56:20,610 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 194 flow [2024-11-13 14:56:20,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-13 14:56:20,611 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-13 14:56:20,611 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 194 flow [2024-11-13 14:56:20,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 41.666666666666664) internal successors, (375), 9 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:20,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:20,612 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:20,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:56:20,612 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:20,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1601432536, now seen corresponding path program 1 times [2024-11-13 14:56:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:20,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309244980] [2024-11-13 14:56:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:20,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:20,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309244980] [2024-11-13 14:56:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309244980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:20,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:20,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578350791] [2024-11-13 14:56:20,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:20,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:56:20,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:20,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:56:20,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:56:21,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 71 [2024-11-13 14:56:21,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:21,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:21,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 71 [2024-11-13 14:56:21,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:21,253 INFO L124 PetriNetUnfolderBase]: 79/269 cut-off events. [2024-11-13 14:56:21,253 INFO L125 PetriNetUnfolderBase]: For 98/104 co-relation queries the response was YES. [2024-11-13 14:56:21,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 269 events. 79/269 cut-off events. For 98/104 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1132 event pairs, 54 based on Foata normal form. 17/255 useless extension candidates. Maximal degree in co-relation 551. Up to 132 conditions per place. [2024-11-13 14:56:21,256 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 47 selfloop transitions, 7 changer transitions 3/73 dead transitions. [2024-11-13 14:56:21,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 342 flow [2024-11-13 14:56:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:56:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:56:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-11-13 14:56:21,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737089201877934 [2024-11-13 14:56:21,258 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 194 flow. Second operand 6 states and 287 transitions. [2024-11-13 14:56:21,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 342 flow [2024-11-13 14:56:21,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 323 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 14:56:21,262 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 187 flow [2024-11-13 14:56:21,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-13 14:56:21,263 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-11-13 14:56:21,263 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 187 flow [2024-11-13 14:56:21,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:21,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:21,264 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:21,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:56:21,264 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:21,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1895198323, now seen corresponding path program 1 times [2024-11-13 14:56:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274093772] [2024-11-13 14:56:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274093772] [2024-11-13 14:56:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274093772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 14:56:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745122359] [2024-11-13 14:56:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:22,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:56:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:56:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:56:23,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-11-13 14:56:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 187 flow. Second operand has 15 states, 15 states have (on average 34.2) internal successors, (513), 15 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-11-13 14:56:23,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:24,524 INFO L124 PetriNetUnfolderBase]: 111/351 cut-off events. [2024-11-13 14:56:24,525 INFO L125 PetriNetUnfolderBase]: For 155/162 co-relation queries the response was YES. [2024-11-13 14:56:24,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 351 events. 111/351 cut-off events. For 155/162 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1620 event pairs, 20 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 729. Up to 137 conditions per place. [2024-11-13 14:56:24,527 INFO L140 encePairwiseOnDemand]: 57/71 looper letters, 56 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2024-11-13 14:56:24,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 407 flow [2024-11-13 14:56:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:56:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:56:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 492 transitions. [2024-11-13 14:56:24,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5330444203683641 [2024-11-13 14:56:24,530 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 187 flow. Second operand 13 states and 492 transitions. [2024-11-13 14:56:24,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 407 flow [2024-11-13 14:56:24,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 385 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 14:56:24,533 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 264 flow [2024-11-13 14:56:24,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=264, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2024-11-13 14:56:24,534 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-13 14:56:24,534 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 264 flow [2024-11-13 14:56:24,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 34.2) internal successors, (513), 15 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:24,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:24,535 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:24,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:56:24,535 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:24,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1895198322, now seen corresponding path program 1 times [2024-11-13 14:56:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225406765] [2024-11-13 14:56:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:24,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225406765] [2024-11-13 14:56:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225406765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:25,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 14:56:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716007233] [2024-11-13 14:56:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:25,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:56:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:56:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:56:27,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 71 [2024-11-13 14:56:27,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 264 flow. Second operand has 14 states, 14 states have (on average 30.285714285714285) internal successors, (424), 14 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:27,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:27,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 71 [2024-11-13 14:56:27,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:27,957 INFO L124 PetriNetUnfolderBase]: 132/400 cut-off events. [2024-11-13 14:56:27,957 INFO L125 PetriNetUnfolderBase]: For 240/249 co-relation queries the response was YES. [2024-11-13 14:56:27,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 400 events. 132/400 cut-off events. For 240/249 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1915 event pairs, 41 based on Foata normal form. 12/381 useless extension candidates. Maximal degree in co-relation 922. Up to 190 conditions per place. [2024-11-13 14:56:27,960 INFO L140 encePairwiseOnDemand]: 58/71 looper letters, 60 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2024-11-13 14:56:27,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 472 flow [2024-11-13 14:56:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:56:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:56:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 443 transitions. [2024-11-13 14:56:27,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4799566630552546 [2024-11-13 14:56:27,964 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 264 flow. Second operand 13 states and 443 transitions. [2024-11-13 14:56:27,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 472 flow [2024-11-13 14:56:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 459 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-13 14:56:27,969 INFO L231 Difference]: Finished difference. Result has 94 places, 65 transitions, 301 flow [2024-11-13 14:56:27,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=301, PETRI_PLACES=94, PETRI_TRANSITIONS=65} [2024-11-13 14:56:27,970 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2024-11-13 14:56:27,971 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 65 transitions, 301 flow [2024-11-13 14:56:27,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.285714285714285) internal successors, (424), 14 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:27,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:27,971 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:27,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:56:27,971 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:27,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -906820011, now seen corresponding path program 1 times [2024-11-13 14:56:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946932198] [2024-11-13 14:56:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:56:28,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946932198] [2024-11-13 14:56:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946932198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:56:28,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:56:28,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:56:28,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175226405] [2024-11-13 14:56:28,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:56:28,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:56:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:56:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:56:28,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 71 [2024-11-13 14:56:28,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 65 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:28,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:56:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 71 [2024-11-13 14:56:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:56:28,848 INFO L124 PetriNetUnfolderBase]: 107/332 cut-off events. [2024-11-13 14:56:28,848 INFO L125 PetriNetUnfolderBase]: For 310/319 co-relation queries the response was YES. [2024-11-13 14:56:28,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 332 events. 107/332 cut-off events. For 310/319 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1544 event pairs, 59 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 830. Up to 222 conditions per place. [2024-11-13 14:56:28,851 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 51 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-11-13 14:56:28,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 72 transitions, 447 flow [2024-11-13 14:56:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:56:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:56:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-13 14:56:28,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2024-11-13 14:56:28,852 INFO L175 Difference]: Start difference. First operand has 94 places, 65 transitions, 301 flow. Second operand 4 states and 192 transitions. [2024-11-13 14:56:28,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 72 transitions, 447 flow [2024-11-13 14:56:28,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 72 transitions, 411 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-13 14:56:28,857 INFO L231 Difference]: Finished difference. Result has 85 places, 64 transitions, 273 flow [2024-11-13 14:56:28,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=85, PETRI_TRANSITIONS=64} [2024-11-13 14:56:28,858 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2024-11-13 14:56:28,858 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 64 transitions, 273 flow [2024-11-13 14:56:28,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.142857142857146) internal successors, (288), 7 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:28,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:56:28,858 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:28,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:56:28,859 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-13 14:56:28,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1953351358, now seen corresponding path program 1 times [2024-11-13 14:56:28,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:28,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090957125] [2024-11-13 14:56:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:28,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:56:29,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:56:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:56:29,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:56:29,325 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:56:29,327 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 50 remaining) [2024-11-13 14:56:29,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-13 14:56:29,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-13 14:56:29,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-13 14:56:29,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-13 14:56:29,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2024-11-13 14:56:29,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-13 14:56:29,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-13 14:56:29,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-13 14:56:29,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-13 14:56:29,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-13 14:56:29,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-13 14:56:29,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (24 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-13 14:56:29,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-13 14:56:29,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-13 14:56:29,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 50 remaining) [2024-11-13 14:56:29,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:56:29,337 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:29,398 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:56:29,399 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:56:29,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:56:29 BasicIcfg [2024-11-13 14:56:29,409 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:56:29,410 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:56:29,410 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:56:29,411 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:56:29,411 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:56:09" (3/4) ... [2024-11-13 14:56:29,412 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 14:56:29,475 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:56:29,475 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:56:29,476 INFO L158 Benchmark]: Toolchain (without parser) took 22665.47ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 117.2MB in the beginning and 205.5MB in the end (delta: -88.3MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. [2024-11-13 14:56:29,476 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:56:29,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 964.76ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 76.3MB in the end (delta: 40.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-13 14:56:29,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.27ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 73.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:56:29,478 INFO L158 Benchmark]: Boogie Preprocessor took 56.34ms. Allocated memory is still 142.6MB. Free memory was 73.2MB in the beginning and 69.8MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:56:29,479 INFO L158 Benchmark]: RCFGBuilder took 1591.51ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 82.9MB in the end (delta: -13.3MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2024-11-13 14:56:29,479 INFO L158 Benchmark]: TraceAbstraction took 19919.09ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 81.7MB in the beginning and 209.7MB in the end (delta: -128.0MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-11-13 14:56:29,480 INFO L158 Benchmark]: Witness Printer took 64.93ms. Allocated memory is still 385.9MB. Free memory was 209.7MB in the beginning and 205.5MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:56:29,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 964.76ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 76.3MB in the end (delta: 40.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.27ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 73.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.34ms. Allocated memory is still 142.6MB. Free memory was 73.2MB in the beginning and 69.8MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1591.51ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 82.9MB in the end (delta: -13.3MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19919.09ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 81.7MB in the beginning and 209.7MB in the end (delta: -128.0MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. * Witness Printer took 64.93ms. Allocated memory is still 385.9MB. Free memory was 209.7MB in the beginning and 205.5MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1254] 0 int i = 0; VAL [i=0, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=1, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=2, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=3, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=4, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=5, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=6, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=7, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=8, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=9, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=10, mutex={1:0}, slot={2:0}] [L1254] COND FALSE 0 !(i < 10) [L1256] 0 int j = __VERIFIER_nondet_int(); [L1257] CALL 0 assume_abort_if_not(0 <= j && j < 10) [L11] COND FALSE 0 !(!cond) [L1257] RET 0 assume_abort_if_not(0 <= j && j < 10) [L1258] 0 struct s *p; [L1259] 0 pthread_t t1; [L1260] CALL, EXPR 0 new(1) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x VAL [mutex={1:0}, slot={2:0}] [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1260] RET, EXPR 0 new(1) [L1260] 0 slot[j] = new(1) [L1261] CALL, EXPR 0 new(2) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x VAL [mutex={1:0}, slot={2:0}] [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1261] RET, EXPR 0 new(2) [L1261] EXPR 0 slot[j] [L1261] CALL 0 list_add(new(2), slot[j]) [L1239] EXPR 0 list->next [L1239] 0 struct s *temp = list->next; [L1240] 0 list->next = node VAL [mutex={1:0}, slot={2:0}] [L1241] 0 node->next = temp [L1261] RET 0 list_add(new(2), slot[j]) [L1262] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [j=0, mutex={1:0}, slot={2:0}, t1=-1] [L1246] 1 int i = __VERIFIER_nondet_int(); [L1247] CALL 1 assume_abort_if_not(0 <= i && i < 10) [L11] COND FALSE 1 !(!cond) [L1247] RET 1 assume_abort_if_not(0 <= i && i < 10) [L1249] CALL, EXPR 1 new(3) [L1233] 1 struct s *p = malloc(sizeof(struct s)); [L1234] 1 p->datum = x VAL [\old(arg)={0:0}, arg={0:0}, i=1, mutex={1:0}, slot={2:0}] [L1235] 1 p->next = ((void *)0) [L1236] 1 return p; [L1249] RET, EXPR 1 new(3) [L1249] EXPR 1 slot[i] [L1249] CALL 1 list_add(new(3), slot[i]) [L1239] 1 list->next - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1262]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 96 locations, 50 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: 19.7s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3425 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2532 mSDsluCounter, 1916 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1838 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9069 IncrementalHoareTripleChecker+Invalid, 9195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 78 mSDtfsCounter, 9069 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=17, InterpolantAutomatonStates: 111, 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, 0.8s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 374 NumberOfCodeBlocks, 374 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 565 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 780/813 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-13 14:56:29,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab4e91f-1722-4969-8617-01144aa55326/bin/uautomizer-verify-qhAvR1uOyd/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)