./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC --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 e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:44:59,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:44:59,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 23:44:59,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:44:59,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:44:59,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:44:59,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:44:59,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:44:59,289 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:44:59,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:44:59,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:44:59,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:44:59,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:44:59,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:44:59,293 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:44:59,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:44:59,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:44:59,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:44:59,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:44:59,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:44:59,294 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:44:59,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:44:59,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:59,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:59,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:59,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:59,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:44:59,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:59,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:59,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:59,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:59,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:44:59,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:44:59,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:44:59,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:44:59,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:44:59,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:44:59,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:44:59,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:44:59,300 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_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC 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 -> e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a [2024-11-23 23:44:59,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:44:59,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:44:59,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:44:59,735 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:44:59,736 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:44:59,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2024-11-23 23:45:03,448 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/data/d18f7bf07/30966d8e55324aae842debde719487da/FLAG5c2f5159d [2024-11-23 23:45:03,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:45:03,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2024-11-23 23:45:03,874 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/data/d18f7bf07/30966d8e55324aae842debde719487da/FLAG5c2f5159d [2024-11-23 23:45:04,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/data/d18f7bf07/30966d8e55324aae842debde719487da [2024-11-23 23:45:04,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:45:04,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:45:04,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:04,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:45:04,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:45:04,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:04" (1/1) ... [2024-11-23 23:45:04,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2860b371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:04, skipping insertion in model container [2024-11-23 23:45:04,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:04" (1/1) ... [2024-11-23 23:45:04,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:45:04,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:04,916 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:45:05,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:45:05,165 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:45:05,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05 WrapperNode [2024-11-23 23:45:05,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:45:05,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:05,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:45:05,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:45:05,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,288 INFO L138 Inliner]: procedures = 372, calls = 87, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2024-11-23 23:45:05,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:45:05,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:45:05,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:45:05,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:45:05,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,358 INFO L175 MemorySlicer]: Split 78 memory accesses to 2 slices as follows [64, 14]. 82 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60, 0]. The 11 writes are split as follows [1, 10]. [2024-11-23 23:45:05,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,385 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:45:05,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:45:05,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:45:05,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:45:05,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2024-11-23 23:45:05,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:45:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:05,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:45:05,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:45:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:45:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:45:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:45:05,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:45:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 23:45:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:45:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:45:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:45:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:45:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 23:45:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 23:45:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:45:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:45:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:45:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:45:05,494 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:45:05,729 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:45:05,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:45:06,433 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:45:06,433 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:45:07,221 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:45:07,223 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:45:07,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:07 BoogieIcfgContainer [2024-11-23 23:45:07,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:45:07,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:45:07,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:45:07,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:45:07,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:04" (1/3) ... [2024-11-23 23:45:07,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf28e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:07, skipping insertion in model container [2024-11-23 23:45:07,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (2/3) ... [2024-11-23 23:45:07,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bf28e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:07, skipping insertion in model container [2024-11-23 23:45:07,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:07" (3/3) ... [2024-11-23 23:45:07,241 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2024-11-23 23:45:07,264 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:45:07,266 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_19-nested_nr.i that has 2 procedures, 72 locations, 1 initial locations, 2 loop locations, and 37 error locations. [2024-11-23 23:45:07,266 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:45:07,370 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 23:45:07,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 150 flow [2024-11-23 23:45:07,544 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2024-11-23 23:45:07,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:45:07,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 280 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-23 23:45:07,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 150 flow [2024-11-23 23:45:07,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 147 flow [2024-11-23 23:45:07,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:45:07,602 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;@803a36a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:45:07,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-23 23:45:07,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:45:07,615 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-23 23:45:07,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:45:07,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:07,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 23:45:07,617 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)] === [2024-11-23 23:45:07,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 16261079, now seen corresponding path program 1 times [2024-11-23 23:45:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205256524] [2024-11-23 23:45:07,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205256524] [2024-11-23 23:45:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205256524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:08,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:08,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414147547] [2024-11-23 23:45:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:08,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:08,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:08,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:08,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2024-11-23 23:45:08,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:08,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:08,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2024-11-23 23:45:08,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:08,386 INFO L124 PetriNetUnfolderBase]: 65/268 cut-off events. [2024-11-23 23:45:08,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:45:08,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 268 events. 65/268 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1346 event pairs, 63 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 376. Up to 155 conditions per place. [2024-11-23 23:45:08,394 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 27 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-11-23 23:45:08,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 207 flow [2024-11-23 23:45:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:45:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-23 23:45:08,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7534246575342466 [2024-11-23 23:45:08,421 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 147 flow. Second operand 3 states and 165 transitions. [2024-11-23 23:45:08,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 207 flow [2024-11-23 23:45:08,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:45:08,436 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 158 flow [2024-11-23 23:45:08,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2024-11-23 23:45:08,448 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2024-11-23 23:45:08,449 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 158 flow [2024-11-23 23:45:08,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:08,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:08,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 23:45:08,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:45:08,452 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)] === [2024-11-23 23:45:08,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash 504029122, now seen corresponding path program 1 times [2024-11-23 23:45:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625442896] [2024-11-23 23:45:08,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625442896] [2024-11-23 23:45:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625442896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60063515] [2024-11-23 23:45:08,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:08,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:08,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:08,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:45:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:08,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:45:08,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:08,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60063515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:09,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-23 23:45:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616423310] [2024-11-23 23:45:09,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:09,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:09,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:09,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:09,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2024-11-23 23:45:09,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:09,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:09,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2024-11-23 23:45:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:09,339 INFO L124 PetriNetUnfolderBase]: 65/271 cut-off events. [2024-11-23 23:45:09,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:45:09,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 271 events. 65/271 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1343 event pairs, 63 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 432. Up to 155 conditions per place. [2024-11-23 23:45:09,346 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 27 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-23 23:45:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 234 flow [2024-11-23 23:45:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:45:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:45:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 305 transitions. [2024-11-23 23:45:09,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6963470319634704 [2024-11-23 23:45:09,352 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 158 flow. Second operand 6 states and 305 transitions. [2024-11-23 23:45:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 234 flow [2024-11-23 23:45:09,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 230 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 23:45:09,360 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 190 flow [2024-11-23 23:45:09,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-11-23 23:45:09,362 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-23 23:45:09,362 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 190 flow [2024-11-23 23:45:09,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:09,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:09,363 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-23 23:45:09,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:45:09,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-23 23:45:09,568 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)] === [2024-11-23 23:45:09,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 262029975, now seen corresponding path program 2 times [2024-11-23 23:45:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724942632] [2024-11-23 23:45:09,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:09,632 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:45:09,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:45:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724942632] [2024-11-23 23:45:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724942632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:09,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:09,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:09,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922940195] [2024-11-23 23:45:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:09,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:09,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:09,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:09,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 73 [2024-11-23 23:45:09,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:09,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:09,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 73 [2024-11-23 23:45:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:10,135 INFO L124 PetriNetUnfolderBase]: 65/267 cut-off events. [2024-11-23 23:45:10,136 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 23:45:10,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 267 events. 65/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1311 event pairs, 63 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 421. Up to 157 conditions per place. [2024-11-23 23:45:10,140 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 30 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-23 23:45:10,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 250 flow [2024-11-23 23:45:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:45:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-23 23:45:10,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6894977168949772 [2024-11-23 23:45:10,147 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 190 flow. Second operand 3 states and 151 transitions. [2024-11-23 23:45:10,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 250 flow [2024-11-23 23:45:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 236 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-23 23:45:10,152 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 176 flow [2024-11-23 23:45:10,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=176, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-11-23 23:45:10,154 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2024-11-23 23:45:10,154 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 176 flow [2024-11-23 23:45:10,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:10,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:10,156 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-23 23:45:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:45:10,156 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)] === [2024-11-23 23:45:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash 262029976, now seen corresponding path program 1 times [2024-11-23 23:45:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-23 23:45:10,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:10,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-23 23:45:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729787194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:10,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038940379] [2024-11-23 23:45:10,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:10,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:10,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:10,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:45:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:10,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:45:10,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:10,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:10,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038940379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:10,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:10,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-23 23:45:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299309957] [2024-11-23 23:45:10,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:10,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:45:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:10,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:45:10,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:45:10,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2024-11-23 23:45:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 46.15384615384615) internal successors, (600), 13 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:10,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:10,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2024-11-23 23:45:10,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:10,952 INFO L124 PetriNetUnfolderBase]: 65/273 cut-off events. [2024-11-23 23:45:10,953 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-23 23:45:10,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 273 events. 65/273 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1334 event pairs, 63 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 431. Up to 155 conditions per place. [2024-11-23 23:45:10,956 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 27 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-11-23 23:45:10,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 78 transitions, 288 flow [2024-11-23 23:45:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:45:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 23:45:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 584 transitions. [2024-11-23 23:45:10,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 23:45:10,965 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 176 flow. Second operand 12 states and 584 transitions. [2024-11-23 23:45:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 78 transitions, 288 flow [2024-11-23 23:45:10,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:45:10,972 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 252 flow [2024-11-23 23:45:10,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=252, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-11-23 23:45:10,974 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-23 23:45:10,974 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 252 flow [2024-11-23 23:45:10,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.15384615384615) internal successors, (600), 13 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:10,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:10,975 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-23 23:45:10,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:45:11,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:11,180 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)] === [2024-11-23 23:45:11,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -609639752, now seen corresponding path program 2 times [2024-11-23 23:45:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:11,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698876982] [2024-11-23 23:45:11,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:11,207 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:45:11,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698876982] [2024-11-23 23:45:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698876982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:11,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162011812] [2024-11-23 23:45:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:11,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:11,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:11,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:11,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 73 [2024-11-23 23:45:11,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:11,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:11,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 73 [2024-11-23 23:45:11,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:11,597 INFO L124 PetriNetUnfolderBase]: 65/269 cut-off events. [2024-11-23 23:45:11,598 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-23 23:45:11,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 269 events. 65/269 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1302 event pairs, 63 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 421. Up to 163 conditions per place. [2024-11-23 23:45:11,601 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 34 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-23 23:45:11,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 320 flow [2024-11-23 23:45:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:45:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-23 23:45:11,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7077625570776256 [2024-11-23 23:45:11,604 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 252 flow. Second operand 3 states and 155 transitions. [2024-11-23 23:45:11,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 320 flow [2024-11-23 23:45:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 74 transitions, 272 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-23 23:45:11,610 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 204 flow [2024-11-23 23:45:11,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2024-11-23 23:45:11,611 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-11-23 23:45:11,612 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 204 flow [2024-11-23 23:45:11,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:11,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:11,612 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:11,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:45:11,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:11,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1748235171, now seen corresponding path program 1 times [2024-11-23 23:45:11,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892914425] [2024-11-23 23:45:11,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:11,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:12,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:12,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892914425] [2024-11-23 23:45:12,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892914425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:12,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324054115] [2024-11-23 23:45:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:12,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:45:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:12,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:45:12,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:45:12,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2024-11-23 23:45:12,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:12,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:12,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2024-11-23 23:45:12,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:13,049 INFO L124 PetriNetUnfolderBase]: 65/277 cut-off events. [2024-11-23 23:45:13,050 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-23 23:45:13,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 277 events. 65/277 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1250 event pairs, 63 based on Foata normal form. 11/235 useless extension candidates. Maximal degree in co-relation 446. Up to 166 conditions per place. [2024-11-23 23:45:13,053 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 40 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-11-23 23:45:13,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 312 flow [2024-11-23 23:45:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:45:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:45:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-23 23:45:13,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054794520547945 [2024-11-23 23:45:13,055 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 204 flow. Second operand 5 states and 221 transitions. [2024-11-23 23:45:13,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 312 flow [2024-11-23 23:45:13,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:45:13,060 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 238 flow [2024-11-23 23:45:13,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-11-23 23:45:13,061 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-11-23 23:45:13,061 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 238 flow [2024-11-23 23:45:13,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:13,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:13,062 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:13,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:45:13,062 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:13,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2130201229, now seen corresponding path program 1 times [2024-11-23 23:45:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774524007] [2024-11-23 23:45:13,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774524007] [2024-11-23 23:45:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774524007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:13,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:45:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507049034] [2024-11-23 23:45:13,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:13,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:13,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:13,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:14,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2024-11-23 23:45:14,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:14,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:14,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2024-11-23 23:45:14,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:14,537 INFO L124 PetriNetUnfolderBase]: 65/273 cut-off events. [2024-11-23 23:45:14,538 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-23 23:45:14,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 273 events. 65/273 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1217 event pairs, 63 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 457. Up to 160 conditions per place. [2024-11-23 23:45:14,541 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 35 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-11-23 23:45:14,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 73 transitions, 326 flow [2024-11-23 23:45:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 23:45:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 285 transitions. [2024-11-23 23:45:14,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5577299412915852 [2024-11-23 23:45:14,545 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 238 flow. Second operand 7 states and 285 transitions. [2024-11-23 23:45:14,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 73 transitions, 326 flow [2024-11-23 23:45:14,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 73 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:45:14,552 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 252 flow [2024-11-23 23:45:14,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-11-23 23:45:14,553 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2024-11-23 23:45:14,553 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 252 flow [2024-11-23 23:45:14,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:14,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:14,557 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:14,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:45:14,558 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:14,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2130201228, now seen corresponding path program 1 times [2024-11-23 23:45:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496140486] [2024-11-23 23:45:14,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496140486] [2024-11-23 23:45:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496140486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:15,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:15,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:45:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240067472] [2024-11-23 23:45:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:15,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:15,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:15,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:15,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:16,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-23 23:45:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-23 23:45:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:16,460 INFO L124 PetriNetUnfolderBase]: 65/269 cut-off events. [2024-11-23 23:45:16,461 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-23 23:45:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 269 events. 65/269 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1189 event pairs, 63 based on Foata normal form. 2/225 useless extension candidates. Maximal degree in co-relation 462. Up to 160 conditions per place. [2024-11-23 23:45:16,465 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 34 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-11-23 23:45:16,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 338 flow [2024-11-23 23:45:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 23:45:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-11-23 23:45:16,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5146771037181996 [2024-11-23 23:45:16,468 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 252 flow. Second operand 7 states and 263 transitions. [2024-11-23 23:45:16,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 338 flow [2024-11-23 23:45:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 71 transitions, 316 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 23:45:16,475 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 248 flow [2024-11-23 23:45:16,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-11-23 23:45:16,478 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-11-23 23:45:16,479 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 248 flow [2024-11-23 23:45:16,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:16,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:16,480 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:16,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:45:16,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:16,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1576038190, now seen corresponding path program 1 times [2024-11-23 23:45:16,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:16,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797364920] [2024-11-23 23:45:16,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:16,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:16,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:16,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797364920] [2024-11-23 23:45:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797364920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:16,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:16,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409141536] [2024-11-23 23:45:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:16,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:45:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:16,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:45:16,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:45:16,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2024-11-23 23:45:16,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:16,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:16,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2024-11-23 23:45:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:17,217 INFO L124 PetriNetUnfolderBase]: 65/267 cut-off events. [2024-11-23 23:45:17,217 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-23 23:45:17,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 267 events. 65/267 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1171 event pairs, 63 based on Foata normal form. 2/225 useless extension candidates. Maximal degree in co-relation 460. Up to 162 conditions per place. [2024-11-23 23:45:17,220 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 34 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-11-23 23:45:17,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 70 transitions, 336 flow [2024-11-23 23:45:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:45:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:45:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-23 23:45:17,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054794520547945 [2024-11-23 23:45:17,222 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 248 flow. Second operand 5 states and 221 transitions. [2024-11-23 23:45:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 70 transitions, 336 flow [2024-11-23 23:45:17,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 70 transitions, 314 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 23:45:17,226 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 246 flow [2024-11-23 23:45:17,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2024-11-23 23:45:17,227 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2024-11-23 23:45:17,228 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 246 flow [2024-11-23 23:45:17,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:17,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:17,228 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:17,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:45:17,229 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)] === [2024-11-23 23:45:17,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1576038191, now seen corresponding path program 1 times [2024-11-23 23:45:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:17,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395035885] [2024-11-23 23:45:17,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:17,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395035885] [2024-11-23 23:45:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395035885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:17,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:17,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:17,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909936798] [2024-11-23 23:45:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:17,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:45:17,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:17,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:45:17,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:45:17,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 73 [2024-11-23 23:45:17,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:17,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:17,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 73 [2024-11-23 23:45:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:17,977 INFO L124 PetriNetUnfolderBase]: 65/265 cut-off events. [2024-11-23 23:45:17,977 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-23 23:45:17,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 265 events. 65/265 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 63 based on Foata normal form. 2/223 useless extension candidates. Maximal degree in co-relation 454. Up to 162 conditions per place. [2024-11-23 23:45:17,979 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 32 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-11-23 23:45:17,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 69 transitions, 330 flow [2024-11-23 23:45:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:45:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:45:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-23 23:45:17,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821917808219178 [2024-11-23 23:45:17,983 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 246 flow. Second operand 5 states and 249 transitions. [2024-11-23 23:45:17,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 69 transitions, 330 flow [2024-11-23 23:45:17,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:45:17,988 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 244 flow [2024-11-23 23:45:17,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-11-23 23:45:17,989 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2024-11-23 23:45:17,989 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 244 flow [2024-11-23 23:45:17,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:17,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:17,991 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:17,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:45:17,992 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:17,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash 95754917, now seen corresponding path program 1 times [2024-11-23 23:45:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142357149] [2024-11-23 23:45:17,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:18,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142357149] [2024-11-23 23:45:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142357149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476947696] [2024-11-23 23:45:18,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:18,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:18,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:18,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:18,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:45:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:19,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 23:45:19,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:19,396 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 23:45:19,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 23:45:19,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-23 23:45:19,561 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 23:45:19,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 23:45:19,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:45:19,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-23 23:45:19,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:45:19,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-23 23:45:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:19,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:20,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:45:20,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-23 23:45:20,399 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 23:45:20,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-23 23:45:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476947696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:20,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 20 [2024-11-23 23:45:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692267678] [2024-11-23 23:45:20,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:20,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:45:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:20,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:45:20,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:45:25,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2024-11-23 23:45:25,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 244 flow. Second operand has 22 states, 22 states have (on average 35.77272727272727) internal successors, (787), 22 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:25,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:25,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2024-11-23 23:45:25,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:26,275 INFO L124 PetriNetUnfolderBase]: 75/305 cut-off events. [2024-11-23 23:45:26,275 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-23 23:45:26,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 305 events. 75/305 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1355 event pairs, 72 based on Foata normal form. 5/262 useless extension candidates. Maximal degree in co-relation 534. Up to 176 conditions per place. [2024-11-23 23:45:26,278 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 43 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-11-23 23:45:26,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 78 transitions, 398 flow [2024-11-23 23:45:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:45:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 23:45:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 424 transitions. [2024-11-23 23:45:26,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5280199252801993 [2024-11-23 23:45:26,282 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 244 flow. Second operand 11 states and 424 transitions. [2024-11-23 23:45:26,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 78 transitions, 398 flow [2024-11-23 23:45:26,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 78 transitions, 360 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:45:26,287 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 255 flow [2024-11-23 23:45:26,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=255, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-23 23:45:26,288 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2024-11-23 23:45:26,288 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 255 flow [2024-11-23 23:45:26,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 35.77272727272727) internal successors, (787), 22 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:26,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:26,289 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:26,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:45:26,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:26,490 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:26,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1973703466, now seen corresponding path program 1 times [2024-11-23 23:45:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:26,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116441860] [2024-11-23 23:45:26,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116441860] [2024-11-23 23:45:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116441860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687418870] [2024-11-23 23:45:26,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:26,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:26,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:26,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:45:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:27,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:45:27,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:27,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:27,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687418870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:27,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:27,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-23 23:45:27,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341781314] [2024-11-23 23:45:27,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:27,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:45:27,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:27,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:45:27,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:45:27,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2024-11-23 23:45:27,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 255 flow. Second operand has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:27,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:27,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2024-11-23 23:45:27,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:27,534 INFO L124 PetriNetUnfolderBase]: 65/304 cut-off events. [2024-11-23 23:45:27,535 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-23 23:45:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 304 events. 65/304 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1096 event pairs, 63 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 552. Up to 158 conditions per place. [2024-11-23 23:45:27,537 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 66 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2024-11-23 23:45:27,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 513 flow [2024-11-23 23:45:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 23:45:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 428 transitions. [2024-11-23 23:45:27,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7328767123287672 [2024-11-23 23:45:27,540 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 255 flow. Second operand 8 states and 428 transitions. [2024-11-23 23:45:27,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 513 flow [2024-11-23 23:45:27,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 489 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-23 23:45:27,544 INFO L231 Difference]: Finished difference. Result has 96 places, 73 transitions, 291 flow [2024-11-23 23:45:27,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=291, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2024-11-23 23:45:27,544 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-23 23:45:27,544 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 291 flow [2024-11-23 23:45:27,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:27,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:27,545 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:27,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:27,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:27,750 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:27,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1970663926, now seen corresponding path program 2 times [2024-11-23 23:45:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915634619] [2024-11-23 23:45:27,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:27,928 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:45:27,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915634619] [2024-11-23 23:45:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915634619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431598496] [2024-11-23 23:45:28,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:28,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:28,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:28,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:28,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:45:29,031 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:45:29,031 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:29,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:45:29,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:29,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:45:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431598496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:29,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:29,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-23 23:45:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848634980] [2024-11-23 23:45:29,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:29,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:45:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:29,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:45:29,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:45:29,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2024-11-23 23:45:29,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 51.15384615384615) internal successors, (665), 13 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:29,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:29,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2024-11-23 23:45:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:29,818 INFO L124 PetriNetUnfolderBase]: 65/344 cut-off events. [2024-11-23 23:45:29,818 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-11-23 23:45:29,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 344 events. 65/344 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1106 event pairs, 63 based on Foata normal form. 4/304 useless extension candidates. Maximal degree in co-relation 672. Up to 158 conditions per place. [2024-11-23 23:45:29,821 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 90 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2024-11-23 23:45:29,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 126 transitions, 727 flow [2024-11-23 23:45:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:45:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 23:45:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions. [2024-11-23 23:45:29,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.726027397260274 [2024-11-23 23:45:29,825 INFO L175 Difference]: Start difference. First operand has 96 places, 73 transitions, 291 flow. Second operand 12 states and 636 transitions. [2024-11-23 23:45:29,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 126 transitions, 727 flow [2024-11-23 23:45:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 126 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:45:29,831 INFO L231 Difference]: Finished difference. Result has 110 places, 78 transitions, 386 flow [2024-11-23 23:45:29,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=386, PETRI_PLACES=110, PETRI_TRANSITIONS=78} [2024-11-23 23:45:29,834 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2024-11-23 23:45:29,834 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 386 flow [2024-11-23 23:45:29,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.15384615384615) internal successors, (665), 13 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:29,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:29,835 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:29,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:45:30,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:30,040 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:30,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2116851478, now seen corresponding path program 3 times [2024-11-23 23:45:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569742819] [2024-11-23 23:45:30,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:45:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:30,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:45:30,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-11-23 23:45:30,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569742819] [2024-11-23 23:45:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569742819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772719943] [2024-11-23 23:45:30,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:45:30,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:30,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:30,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:45:30,955 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:45:30,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:30,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:45:30,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-11-23 23:45:31,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:45:31,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772719943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:31,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:45:31,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-23 23:45:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882483760] [2024-11-23 23:45:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:31,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:31,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:31,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:31,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:32,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 73 [2024-11-23 23:45:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 78 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:32,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:32,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 73 [2024-11-23 23:45:32,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:32,450 INFO L124 PetriNetUnfolderBase]: 71/384 cut-off events. [2024-11-23 23:45:32,450 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2024-11-23 23:45:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 384 events. 71/384 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1459 event pairs, 18 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 749. Up to 126 conditions per place. [2024-11-23 23:45:32,454 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 46 selfloop transitions, 22 changer transitions 3/94 dead transitions. [2024-11-23 23:45:32,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 560 flow [2024-11-23 23:45:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 23:45:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 355 transitions. [2024-11-23 23:45:32,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6947162426614482 [2024-11-23 23:45:32,457 INFO L175 Difference]: Start difference. First operand has 110 places, 78 transitions, 386 flow. Second operand 7 states and 355 transitions. [2024-11-23 23:45:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 560 flow [2024-11-23 23:45:32,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 94 transitions, 550 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 23:45:32,463 INFO L231 Difference]: Finished difference. Result has 112 places, 80 transitions, 431 flow [2024-11-23 23:45:32,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=112, PETRI_TRANSITIONS=80} [2024-11-23 23:45:32,464 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 38 predicate places. [2024-11-23 23:45:32,465 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 80 transitions, 431 flow [2024-11-23 23:45:32,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:32,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:32,465 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:32,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:32,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:45:32,666 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:32,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2118031284, now seen corresponding path program 1 times [2024-11-23 23:45:32,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:32,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438779078] [2024-11-23 23:45:32,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:32,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-23 23:45:33,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:33,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438779078] [2024-11-23 23:45:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438779078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:33,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097268014] [2024-11-23 23:45:33,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:33,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:33,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:33,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:33,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:33,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 73 [2024-11-23 23:45:33,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 80 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:33,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:33,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 73 [2024-11-23 23:45:33,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:33,561 INFO L124 PetriNetUnfolderBase]: 72/359 cut-off events. [2024-11-23 23:45:33,561 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-11-23 23:45:33,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 359 events. 72/359 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1172 event pairs, 51 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 783. Up to 214 conditions per place. [2024-11-23 23:45:33,565 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 61 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-23 23:45:33,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 571 flow [2024-11-23 23:45:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:45:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-23 23:45:33,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7488584474885844 [2024-11-23 23:45:33,568 INFO L175 Difference]: Start difference. First operand has 112 places, 80 transitions, 431 flow. Second operand 3 states and 164 transitions. [2024-11-23 23:45:33,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 571 flow [2024-11-23 23:45:33,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 85 transitions, 534 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 23:45:33,576 INFO L231 Difference]: Finished difference. Result has 108 places, 78 transitions, 397 flow [2024-11-23 23:45:33,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=108, PETRI_TRANSITIONS=78} [2024-11-23 23:45:33,577 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2024-11-23 23:45:33,577 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 78 transitions, 397 flow [2024-11-23 23:45:33,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:33,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:33,578 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:33,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:45:33,579 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:33,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:33,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2118031285, now seen corresponding path program 1 times [2024-11-23 23:45:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:33,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231764627] [2024-11-23 23:45:33,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:33,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-23 23:45:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231764627] [2024-11-23 23:45:34,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231764627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:34,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:34,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:45:34,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507399427] [2024-11-23 23:45:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:34,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:45:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:34,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:45:34,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:45:34,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 73 [2024-11-23 23:45:34,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 78 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:34,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:45:34,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 73 [2024-11-23 23:45:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:45:34,722 INFO L124 PetriNetUnfolderBase]: 65/337 cut-off events. [2024-11-23 23:45:34,722 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-11-23 23:45:34,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 337 events. 65/337 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1018 event pairs, 50 based on Foata normal form. 16/320 useless extension candidates. Maximal degree in co-relation 728. Up to 214 conditions per place. [2024-11-23 23:45:34,726 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 60 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-23 23:45:34,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 534 flow [2024-11-23 23:45:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:45:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:45:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-23 23:45:34,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7579908675799086 [2024-11-23 23:45:34,728 INFO L175 Difference]: Start difference. First operand has 108 places, 78 transitions, 397 flow. Second operand 3 states and 166 transitions. [2024-11-23 23:45:34,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 534 flow [2024-11-23 23:45:34,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 83 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:45:34,734 INFO L231 Difference]: Finished difference. Result has 106 places, 76 transitions, 393 flow [2024-11-23 23:45:34,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=106, PETRI_TRANSITIONS=76} [2024-11-23 23:45:34,736 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2024-11-23 23:45:34,736 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 76 transitions, 393 flow [2024-11-23 23:45:34,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:34,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:45:34,737 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:34,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:45:34,737 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-23 23:45:34,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1197886807, now seen corresponding path program 1 times [2024-11-23 23:45:34,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:34,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265522590] [2024-11-23 23:45:34,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:34,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 11 proven. 460 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-23 23:47:21,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265522590] [2024-11-23 23:47:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265522590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989564368] [2024-11-23 23:47:21,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:21,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:21,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:21,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2460d59-c917-4013-ae31-07fbe0d95728/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:47:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:23,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2216 conjuncts, 435 conjuncts are in the unsatisfiable core [2024-11-23 23:47:23,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:26,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2024-11-23 23:47:26,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:47:26,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:47:26,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:26,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 23:47:26,877 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-23 23:47:26,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2024-11-23 23:47:26,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 23:47:27,899 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-23 23:47:27,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-23 23:47:27,933 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-23 23:47:27,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-23 23:47:28,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2024-11-23 23:47:28,663 INFO L349 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2024-11-23 23:47:28,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2024-11-23 23:47:28,680 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2024-11-23 23:47:28,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2024-11-23 23:47:28,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-23 23:47:30,364 INFO L349 Elim1Store]: treesize reduction 90, result has 22.4 percent of original size [2024-11-23 23:47:30,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 40 [2024-11-23 23:47:31,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:47:31,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-23 23:47:31,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 35 [2024-11-23 23:47:31,318 INFO L349 Elim1Store]: treesize reduction 174, result has 17.5 percent of original size [2024-11-23 23:47:31,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 43 treesize of output 54 [2024-11-23 23:47:33,401 INFO L349 Elim1Store]: treesize reduction 236, result has 15.1 percent of original size [2024-11-23 23:47:33,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 48 treesize of output 62 [2024-11-23 23:47:33,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:47:34,438 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-23 23:47:34,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-23 23:47:34,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-11-23 23:47:34,559 INFO L349 Elim1Store]: treesize reduction 322, result has 11.5 percent of original size [2024-11-23 23:47:34,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 59 treesize of output 76 [2024-11-23 23:47:34,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2024-11-23 23:47:36,975 INFO L349 Elim1Store]: treesize reduction 424, result has 12.0 percent of original size [2024-11-23 23:47:36,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 64 treesize of output 84 [2024-11-23 23:47:37,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:47:38,204 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-23 23:47:38,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-23 23:47:38,414 INFO L349 Elim1Store]: treesize reduction 544, result has 9.6 percent of original size [2024-11-23 23:47:38,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 75 treesize of output 98 [2024-11-23 23:47:38,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 67 [2024-11-23 23:47:38,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2024-11-23 23:47:40,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:47:40,312 INFO L349 Elim1Store]: treesize reduction 668, result has 10.0 percent of original size [2024-11-23 23:47:40,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 80 treesize of output 106 [2024-11-23 23:47:41,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 85 [2024-11-23 23:47:42,184 INFO L349 Elim1Store]: treesize reduction 854, result has 9.1 percent of original size [2024-11-23 23:47:42,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 4 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 51 case distinctions, treesize of input 91 treesize of output 120 [2024-11-23 23:47:42,259 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-23 23:47:42,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-23 23:47:42,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2024-11-23 23:47:46,588 INFO L349 Elim1Store]: treesize reduction 968, result has 8.5 percent of original size [2024-11-23 23:47:46,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 5 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 96 treesize of output 128 [2024-11-23 23:47:46,698 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-11-23 23:47:46,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2024-11-23 23:47:48,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:47:48,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-23 23:47:48,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 118 [2024-11-23 23:47:48,918 INFO L349 Elim1Store]: treesize reduction 1188, result has 7.8 percent of original size [2024-11-23 23:47:48,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 73 case distinctions, treesize of input 107 treesize of output 142 [2024-11-23 23:47:49,054 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-11-23 23:47:49,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 41 [2024-11-23 23:47:53,273 INFO L349 Elim1Store]: treesize reduction 46, result has 53.5 percent of original size [2024-11-23 23:47:53,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 89 [2024-11-23 23:47:54,136 INFO L349 Elim1Store]: treesize reduction 1212, result has 16.1 percent of original size [2024-11-23 23:47:54,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 5 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 86 case distinctions, treesize of input 135 treesize of output 299 [2024-11-23 23:47:58,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 480 treesize of output 330 [2024-11-23 23:47:58,489 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-23 23:47:58,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 372 treesize of output 574 [2024-11-23 23:47:58,698 INFO L224 Elim1Store]: Index analysis took 148 ms [2024-11-23 23:48:05,287 WARN L286 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 1031 DAG size of output: 621 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-23 23:48:05,288 INFO L349 Elim1Store]: treesize reduction 1608, result has 48.1 percent of original size [2024-11-23 23:48:05,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 21 select indices, 21 select index equivalence classes, 4 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 227 case distinctions, treesize of input 444 treesize of output 1856