./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_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_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/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_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/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_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/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 b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:29:13,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:29:13,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 00:29:13,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:29:13,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:29:13,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:29:13,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:29:13,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:29:13,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:29:13,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:29:13,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:29:13,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:29:13,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:29:13,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:29:13,680 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:29:13,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 00:29:13,681 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 00:29:13,682 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 00:29:13,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:29:13,683 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:29:13,683 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:29:13,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:29:13,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:29:13,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:29:13,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:29:13,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:13,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:13,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:13,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:13,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:29:13,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:13,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:13,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:13,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:13,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:29:13,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:29:13,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:29:13,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:29:13,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:29:13,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:29:13,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:29:13,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:29:13,688 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_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/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 -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 [2024-11-24 00:29:14,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:29:14,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:29:14,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:29:14,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:29:14,161 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:29:14,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2024-11-24 00:29:17,835 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/data/70d084cfd/dbeefd9140224493ac61afba7d10bb1d/FLAG2772d255c [2024-11-24 00:29:18,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:29:18,411 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2024-11-24 00:29:18,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/data/70d084cfd/dbeefd9140224493ac61afba7d10bb1d/FLAG2772d255c [2024-11-24 00:29:18,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/data/70d084cfd/dbeefd9140224493ac61afba7d10bb1d [2024-11-24 00:29:18,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:29:18,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:29:18,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:18,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:29:18,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:29:18,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:18" (1/1) ... [2024-11-24 00:29:18,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1274d1c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:18, skipping insertion in model container [2024-11-24 00:29:18,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:18" (1/1) ... [2024-11-24 00:29:18,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:29:19,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:19,558 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:29:19,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:19,760 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:29:19,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19 WrapperNode [2024-11-24 00:29:19,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:19,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:19,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:29:19,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:29:19,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,835 INFO L138 Inliner]: procedures = 370, calls = 86, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 177 [2024-11-24 00:29:19,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:19,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:29:19,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:29:19,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:29:19,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,902 INFO L175 MemorySlicer]: Split 78 memory accesses to 3 slices as follows [50, 14, 14]. 64 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [50, 10, 0]. The 11 writes are split as follows [0, 1, 10]. [2024-11-24 00:29:19,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:29:19,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:29:19,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:29:19,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:29:19,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (1/1) ... [2024-11-24 00:29:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:19,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:19,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:29:19,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:29:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:29:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 00:29:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:29:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:29:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:29:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:29:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 00:29:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 00:29:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:29:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:29:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:29:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:29:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:29:20,027 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:29:20,322 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:29:20,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:29:21,024 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:29:21,025 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:29:21,552 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:29:21,552 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 00:29:21,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:21 BoogieIcfgContainer [2024-11-24 00:29:21,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:29:21,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:29:21,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:29:21,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:29:21,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:29:18" (1/3) ... [2024-11-24 00:29:21,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26671804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:21, skipping insertion in model container [2024-11-24 00:29:21,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:19" (2/3) ... [2024-11-24 00:29:21,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26671804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:21, skipping insertion in model container [2024-11-24 00:29:21,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:21" (3/3) ... [2024-11-24 00:29:21,570 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2024-11-24 00:29:21,589 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:29:21,592 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_17-arrayloop_nr.i that has 2 procedures, 73 locations, 1 initial locations, 3 loop locations, and 37 error locations. [2024-11-24 00:29:21,592 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:29:21,700 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:29:21,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 154 flow [2024-11-24 00:29:21,837 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2024-11-24 00:29:21,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:29:21,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 241 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-11-24 00:29:21,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 75 transitions, 154 flow [2024-11-24 00:29:21,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 151 flow [2024-11-24 00:29:21,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:29:21,897 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;@1782d20f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:29:21,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-24 00:29:21,906 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:29:21,906 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-24 00:29:21,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:29:21,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:21,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:29:21,908 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)] === [2024-11-24 00:29:21,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 488191, now seen corresponding path program 1 times [2024-11-24 00:29:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107590428] [2024-11-24 00:29:21,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:21,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:22,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107590428] [2024-11-24 00:29:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107590428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:22,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520937418] [2024-11-24 00:29:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:22,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:29:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:22,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:29:22,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:29:22,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 75 [2024-11-24 00:29:22,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:22,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:22,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 75 [2024-11-24 00:29:22,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:23,173 INFO L124 PetriNetUnfolderBase]: 142/528 cut-off events. [2024-11-24 00:29:23,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:29:23,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 528 events. 142/528 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3281 event pairs, 99 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 797. Up to 246 conditions per place. [2024-11-24 00:29:23,188 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 37 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-24 00:29:23,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 245 flow [2024-11-24 00:29:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-24 00:29:23,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-24 00:29:23,214 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 151 flow. Second operand 3 states and 165 transitions. [2024-11-24 00:29:23,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 245 flow [2024-11-24 00:29:23,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:23,232 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 150 flow [2024-11-24 00:29:23,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-11-24 00:29:23,240 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2024-11-24 00:29:23,241 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 150 flow [2024-11-24 00:29:23,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:23,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:23,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:29:23,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:29:23,242 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:23,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash 488192, now seen corresponding path program 1 times [2024-11-24 00:29:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205365570] [2024-11-24 00:29:23,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205365570] [2024-11-24 00:29:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205365570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:23,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151174493] [2024-11-24 00:29:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:23,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:29:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:23,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:29:23,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:29:23,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 75 [2024-11-24 00:29:23,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:23,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:23,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 75 [2024-11-24 00:29:23,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:23,989 INFO L124 PetriNetUnfolderBase]: 132/496 cut-off events. [2024-11-24 00:29:23,989 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-24 00:29:23,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 496 events. 132/496 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3029 event pairs, 99 based on Foata normal form. 22/393 useless extension candidates. Maximal degree in co-relation 767. Up to 246 conditions per place. [2024-11-24 00:29:23,998 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 35 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-24 00:29:23,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 240 flow [2024-11-24 00:29:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-24 00:29:24,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7511111111111111 [2024-11-24 00:29:24,003 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 150 flow. Second operand 3 states and 169 transitions. [2024-11-24 00:29:24,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 240 flow [2024-11-24 00:29:24,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:29:24,008 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 142 flow [2024-11-24 00:29:24,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-24 00:29:24,010 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-24 00:29:24,011 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 142 flow [2024-11-24 00:29:24,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:24,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:24,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 00:29:24,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:29:24,012 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:24,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash 469165766, now seen corresponding path program 1 times [2024-11-24 00:29:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635958559] [2024-11-24 00:29:24,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:24,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635958559] [2024-11-24 00:29:24,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635958559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:24,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:24,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:29:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716990176] [2024-11-24 00:29:24,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:24,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:29:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:24,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:29:24,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:29:24,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 75 [2024-11-24 00:29:24,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:24,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:24,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 75 [2024-11-24 00:29:24,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:24,934 INFO L124 PetriNetUnfolderBase]: 152/522 cut-off events. [2024-11-24 00:29:24,934 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-24 00:29:24,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 522 events. 152/522 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3089 event pairs, 126 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 834. Up to 307 conditions per place. [2024-11-24 00:29:24,942 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 31 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-24 00:29:24,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 198 flow [2024-11-24 00:29:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-24 00:29:24,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-24 00:29:24,948 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 142 flow. Second operand 3 states and 153 transitions. [2024-11-24 00:29:24,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 198 flow [2024-11-24 00:29:24,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:29:24,953 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 128 flow [2024-11-24 00:29:24,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-24 00:29:24,954 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2024-11-24 00:29:24,954 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 128 flow [2024-11-24 00:29:24,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:24,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:24,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 00:29:24,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:29:24,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:24,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 469165767, now seen corresponding path program 1 times [2024-11-24 00:29:24,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:24,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185072352] [2024-11-24 00:29:24,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185072352] [2024-11-24 00:29:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185072352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:29:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626439145] [2024-11-24 00:29:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:25,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:29:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:25,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:29:25,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:29:25,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 75 [2024-11-24 00:29:25,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:25,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:25,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 75 [2024-11-24 00:29:25,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:26,055 INFO L124 PetriNetUnfolderBase]: 152/525 cut-off events. [2024-11-24 00:29:26,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:29:26,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 525 events. 152/525 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3114 event pairs, 126 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 835. Up to 308 conditions per place. [2024-11-24 00:29:26,066 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 31 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-24 00:29:26,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 204 flow [2024-11-24 00:29:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:29:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:29:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-24 00:29:26,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-24 00:29:26,069 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 128 flow. Second operand 4 states and 177 transitions. [2024-11-24 00:29:26,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 204 flow [2024-11-24 00:29:26,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:26,079 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 157 flow [2024-11-24 00:29:26,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-24 00:29:26,080 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-24 00:29:26,080 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 157 flow [2024-11-24 00:29:26,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:26,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:26,080 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-24 00:29:26,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:29:26,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:26,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash -436732509, now seen corresponding path program 1 times [2024-11-24 00:29:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820605323] [2024-11-24 00:29:26,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820605323] [2024-11-24 00:29:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820605323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051292258] [2024-11-24 00:29:26,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:26,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:26,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:26,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:29:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:26,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:29:26,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:27,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:27,024 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 [2024-11-24 00:29:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:27,181 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 [2024-11-24 00:29:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:27,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:27,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:29:27,517 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 [2024-11-24 00:29:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:27,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051292258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:27,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:27,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-24 00:29:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408319683] [2024-11-24 00:29:27,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:27,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:29:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:27,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:29:27,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:29:30,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-24 00:29:30,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 157 flow. Second operand has 15 states, 15 states have (on average 35.4) internal successors, (531), 15 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:30,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:30,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-24 00:29:30,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:31,184 INFO L124 PetriNetUnfolderBase]: 174/550 cut-off events. [2024-11-24 00:29:31,185 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-24 00:29:31,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 550 events. 174/550 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3122 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 939. Up to 188 conditions per place. [2024-11-24 00:29:31,189 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 59 selfloop transitions, 11 changer transitions 0/99 dead transitions. [2024-11-24 00:29:31,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 391 flow [2024-11-24 00:29:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:29:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:29:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 313 transitions. [2024-11-24 00:29:31,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961904761904762 [2024-11-24 00:29:31,191 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 157 flow. Second operand 7 states and 313 transitions. [2024-11-24 00:29:31,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 391 flow [2024-11-24 00:29:31,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:31,198 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 229 flow [2024-11-24 00:29:31,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-11-24 00:29:31,199 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2024-11-24 00:29:31,199 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 229 flow [2024-11-24 00:29:31,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 35.4) internal successors, (531), 15 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:31,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:31,199 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:31,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:29:31,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:31,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:31,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 702455720, now seen corresponding path program 1 times [2024-11-24 00:29:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075893531] [2024-11-24 00:29:31,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:29:31,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075893531] [2024-11-24 00:29:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075893531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:31,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:31,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:29:31,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036748008] [2024-11-24 00:29:31,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:31,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:29:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:31,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:29:31,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:29:31,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 75 [2024-11-24 00:29:31,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:31,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:31,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 75 [2024-11-24 00:29:31,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:31,795 INFO L124 PetriNetUnfolderBase]: 254/916 cut-off events. [2024-11-24 00:29:31,796 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-24 00:29:31,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 916 events. 254/916 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5547 event pairs, 153 based on Foata normal form. 10/742 useless extension candidates. Maximal degree in co-relation 1597. Up to 300 conditions per place. [2024-11-24 00:29:31,802 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 53 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-24 00:29:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 393 flow [2024-11-24 00:29:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-24 00:29:31,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2024-11-24 00:29:31,804 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 229 flow. Second operand 3 states and 191 transitions. [2024-11-24 00:29:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 393 flow [2024-11-24 00:29:31,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 91 transitions, 385 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:31,808 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 248 flow [2024-11-24 00:29:31,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-11-24 00:29:31,810 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-24 00:29:31,812 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 248 flow [2024-11-24 00:29:31,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:31,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:31,812 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:31,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:29:31,812 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:31,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash 796562441, now seen corresponding path program 1 times [2024-11-24 00:29:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895116256] [2024-11-24 00:29:31,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:31,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895116256] [2024-11-24 00:29:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895116256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252128344] [2024-11-24 00:29:31,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:31,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:31,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:31,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:29:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:32,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:29:32,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:32,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:32,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252128344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:32,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:32,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-24 00:29:32,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720338307] [2024-11-24 00:29:32,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:32,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:29:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:32,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:29:32,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:29:32,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 75 [2024-11-24 00:29:32,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 248 flow. Second operand has 9 states, 9 states have (on average 47.666666666666664) internal successors, (429), 9 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:32,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:32,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 75 [2024-11-24 00:29:32,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:33,059 INFO L124 PetriNetUnfolderBase]: 702/2307 cut-off events. [2024-11-24 00:29:33,060 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-24 00:29:33,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 2307 events. 702/2307 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 13132 event pairs, 27 based on Foata normal form. 50/1982 useless extension candidates. Maximal degree in co-relation 4061. Up to 234 conditions per place. [2024-11-24 00:29:33,077 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 146 selfloop transitions, 16 changer transitions 0/193 dead transitions. [2024-11-24 00:29:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 193 transitions, 869 flow [2024-11-24 00:29:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:29:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:29:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 531 transitions. [2024-11-24 00:29:33,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.885 [2024-11-24 00:29:33,080 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 248 flow. Second operand 8 states and 531 transitions. [2024-11-24 00:29:33,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 193 transitions, 869 flow [2024-11-24 00:29:33,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 193 transitions, 863 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:33,090 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 350 flow [2024-11-24 00:29:33,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=350, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-11-24 00:29:33,092 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2024-11-24 00:29:33,092 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 350 flow [2024-11-24 00:29:33,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.666666666666664) internal successors, (429), 9 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:33,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:33,092 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-24 00:29:33,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:33,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:33,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:33,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1700893129, now seen corresponding path program 2 times [2024-11-24 00:29:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798114467] [2024-11-24 00:29:33,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:29:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:33,389 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:29:33,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:29:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:34,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798114467] [2024-11-24 00:29:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798114467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:34,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267113518] [2024-11-24 00:29:34,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:29:34,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:34,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:34,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:29:35,199 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:29:35,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:29:35,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:29:35,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:35,278 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 [2024-11-24 00:29:35,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:35,424 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 [2024-11-24 00:29:35,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:35,579 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 [2024-11-24 00:29:35,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:35,734 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 [2024-11-24 00:29:35,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:29:35,892 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 [2024-11-24 00:29:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:35,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:36,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:29:36,193 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 [2024-11-24 00:29:36,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:29:36,483 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 [2024-11-24 00:29:36,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:29:36,775 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 [2024-11-24 00:29:37,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:29:37,086 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 [2024-11-24 00:29:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267113518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:37,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-24 00:29:37,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179138174] [2024-11-24 00:29:37,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:37,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 00:29:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:37,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 00:29:37,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:29:47,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-24 00:29:47,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 350 flow. Second operand has 33 states, 33 states have (on average 35.45454545454545) internal successors, (1170), 33 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:47,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:47,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-24 00:29:47,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:50,497 INFO L124 PetriNetUnfolderBase]: 806/2516 cut-off events. [2024-11-24 00:29:50,498 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-11-24 00:29:50,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 2516 events. 806/2516 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14581 event pairs, 0 based on Foata normal form. 6/2127 useless extension candidates. Maximal degree in co-relation 4937. Up to 855 conditions per place. [2024-11-24 00:29:50,519 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 93 selfloop transitions, 26 changer transitions 0/149 dead transitions. [2024-11-24 00:29:50,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 930 flow [2024-11-24 00:29:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:29:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 00:29:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 596 transitions. [2024-11-24 00:29:50,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5676190476190476 [2024-11-24 00:29:50,522 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 350 flow. Second operand 14 states and 596 transitions. [2024-11-24 00:29:50,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 930 flow [2024-11-24 00:29:50,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 912 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-24 00:29:50,539 INFO L231 Difference]: Finished difference. Result has 110 places, 88 transitions, 525 flow [2024-11-24 00:29:50,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=525, PETRI_PLACES=110, PETRI_TRANSITIONS=88} [2024-11-24 00:29:50,540 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2024-11-24 00:29:50,542 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 88 transitions, 525 flow [2024-11-24 00:29:50,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 35.45454545454545) internal successors, (1170), 33 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:50,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:50,544 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:50,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:50,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:50,744 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:50,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash -564066663, now seen corresponding path program 2 times [2024-11-24 00:29:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56311743] [2024-11-24 00:29:50,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:29:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:50,792 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:29:50,792 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:29:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:29:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56311743] [2024-11-24 00:29:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56311743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:50,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673923636] [2024-11-24 00:29:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:50,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:29:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:50,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:29:50,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:29:50,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 75 [2024-11-24 00:29:50,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 88 transitions, 525 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) [2024-11-24 00:29:50,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:50,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 75 [2024-11-24 00:29:50,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:51,650 INFO L124 PetriNetUnfolderBase]: 685/2488 cut-off events. [2024-11-24 00:29:51,650 INFO L125 PetriNetUnfolderBase]: For 1467/1467 co-relation queries the response was YES. [2024-11-24 00:29:51,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 2488 events. 685/2488 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 15214 event pairs, 504 based on Foata normal form. 68/2129 useless extension candidates. Maximal degree in co-relation 4865. Up to 1260 conditions per place. [2024-11-24 00:29:51,669 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 75 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-24 00:29:51,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 831 flow [2024-11-24 00:29:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-24 00:29:51,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7822222222222223 [2024-11-24 00:29:51,672 INFO L175 Difference]: Start difference. First operand has 110 places, 88 transitions, 525 flow. Second operand 3 states and 176 transitions. [2024-11-24 00:29:51,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 831 flow [2024-11-24 00:29:51,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 108 transitions, 781 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-24 00:29:51,683 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 482 flow [2024-11-24 00:29:51,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2024-11-24 00:29:51,684 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 30 predicate places. [2024-11-24 00:29:51,684 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 482 flow [2024-11-24 00:29:51,685 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) [2024-11-24 00:29:51,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:51,685 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:51,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:29:51,685 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -564066664, now seen corresponding path program 1 times [2024-11-24 00:29:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693813837] [2024-11-24 00:29:51,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:29:51,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:51,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693813837] [2024-11-24 00:29:51,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693813837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:51,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626049318] [2024-11-24 00:29:51,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:51,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:29:51,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:51,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:29:51,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:29:51,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 75 [2024-11-24 00:29:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 86 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:51,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 75 [2024-11-24 00:29:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:52,604 INFO L124 PetriNetUnfolderBase]: 752/2419 cut-off events. [2024-11-24 00:29:52,604 INFO L125 PetriNetUnfolderBase]: For 1435/1435 co-relation queries the response was YES. [2024-11-24 00:29:52,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 2419 events. 752/2419 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13964 event pairs, 504 based on Foata normal form. 68/2128 useless extension candidates. Maximal degree in co-relation 5057. Up to 1260 conditions per place. [2024-11-24 00:29:52,623 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 76 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-11-24 00:29:52,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 783 flow [2024-11-24 00:29:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:29:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:29:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-24 00:29:52,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-11-24 00:29:52,625 INFO L175 Difference]: Start difference. First operand has 105 places, 86 transitions, 482 flow. Second operand 3 states and 174 transitions. [2024-11-24 00:29:52,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 783 flow [2024-11-24 00:29:52,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:29:52,637 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 478 flow [2024-11-24 00:29:52,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-11-24 00:29:52,638 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2024-11-24 00:29:52,638 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 478 flow [2024-11-24 00:29:52,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:52,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:52,638 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:52,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:29:52,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:52,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -902168935, now seen corresponding path program 1 times [2024-11-24 00:29:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352925323] [2024-11-24 00:29:52,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352925323] [2024-11-24 00:29:52,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352925323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108269315] [2024-11-24 00:29:52,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:52,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:53,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:53,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:29:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:53,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:29:53,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:53,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108269315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:53,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:53,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-24 00:29:53,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896163615] [2024-11-24 00:29:53,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:53,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:29:53,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:53,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:29:53,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:29:53,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 75 [2024-11-24 00:29:53,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 478 flow. Second operand has 13 states, 13 states have (on average 48.07692307692308) internal successors, (625), 13 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:53,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:29:53,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 75 [2024-11-24 00:29:53,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:29:55,219 INFO L124 PetriNetUnfolderBase]: 1142/3757 cut-off events. [2024-11-24 00:29:55,219 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-11-24 00:29:55,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7421 conditions, 3757 events. 1142/3757 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 21514 event pairs, 27 based on Foata normal form. 44/3193 useless extension candidates. Maximal degree in co-relation 7389. Up to 235 conditions per place. [2024-11-24 00:29:55,262 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 234 selfloop transitions, 25 changer transitions 0/286 dead transitions. [2024-11-24 00:29:55,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 286 transitions, 1603 flow [2024-11-24 00:29:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:29:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 00:29:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 806 transitions. [2024-11-24 00:29:55,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8955555555555555 [2024-11-24 00:29:55,266 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 478 flow. Second operand 12 states and 806 transitions. [2024-11-24 00:29:55,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 286 transitions, 1603 flow [2024-11-24 00:29:55,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 286 transitions, 1557 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-24 00:29:55,285 INFO L231 Difference]: Finished difference. Result has 117 places, 86 transitions, 592 flow [2024-11-24 00:29:55,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=592, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2024-11-24 00:29:55,287 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 42 predicate places. [2024-11-24 00:29:55,287 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 592 flow [2024-11-24 00:29:55,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 48.07692307692308) internal successors, (625), 13 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:29:55,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:29:55,288 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 10, 1, 1] [2024-11-24 00:29:55,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:29:55,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:55,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:29:55,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash -316697249, now seen corresponding path program 3 times [2024-11-24 00:29:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:55,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096831773] [2024-11-24 00:29:55,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:29:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:55,823 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 00:29:55,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:29:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 183 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:56,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096831773] [2024-11-24 00:29:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096831773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206511947] [2024-11-24 00:29:56,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:29:56,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:56,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:56,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:56,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:30:50,359 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 00:30:50,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:30:50,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 00:30:50,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:30:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:50,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:30:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206511947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:30:50,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:30:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2024-11-24 00:30:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724837312] [2024-11-24 00:30:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:30:50,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:30:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:30:50,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:30:50,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:30:50,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 75 [2024-11-24 00:30:50,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 592 flow. Second operand has 13 states, 13 states have (on average 47.53846153846154) internal successors, (618), 13 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:30:50,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:30:50,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 75 [2024-11-24 00:30:50,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:30:52,356 INFO L124 PetriNetUnfolderBase]: 1131/3742 cut-off events. [2024-11-24 00:30:52,356 INFO L125 PetriNetUnfolderBase]: For 2240/2240 co-relation queries the response was YES. [2024-11-24 00:30:52,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7382 conditions, 3742 events. 1131/3742 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 21462 event pairs, 18 based on Foata normal form. 11/3145 useless extension candidates. Maximal degree in co-relation 7344. Up to 228 conditions per place. [2024-11-24 00:30:52,392 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 242 selfloop transitions, 23 changer transitions 1/292 dead transitions. [2024-11-24 00:30:52,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 292 transitions, 1639 flow [2024-11-24 00:30:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:30:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 00:30:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 853 transitions. [2024-11-24 00:30:52,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8748717948717949 [2024-11-24 00:30:52,395 INFO L175 Difference]: Start difference. First operand has 117 places, 86 transitions, 592 flow. Second operand 13 states and 853 transitions. [2024-11-24 00:30:52,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 292 transitions, 1639 flow [2024-11-24 00:30:52,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 292 transitions, 1537 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-11-24 00:30:52,415 INFO L231 Difference]: Finished difference. Result has 113 places, 82 transitions, 503 flow [2024-11-24 00:30:52,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=503, PETRI_PLACES=113, PETRI_TRANSITIONS=82} [2024-11-24 00:30:52,416 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2024-11-24 00:30:52,416 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 82 transitions, 503 flow [2024-11-24 00:30:52,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.53846153846154) internal successors, (618), 13 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:30:52,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:30:52,417 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:30:52,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:30:52,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 00:30:52,617 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:30:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:30:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1526656297, now seen corresponding path program 2 times [2024-11-24 00:30:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:30:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674457551] [2024-11-24 00:30:52,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:30:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:30:52,751 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:30:52,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:30:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 144 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:53,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:30:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674457551] [2024-11-24 00:30:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674457551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:30:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898974070] [2024-11-24 00:30:53,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:30:53,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:30:53,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:30:53,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:30:53,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:30:54,189 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:30:54,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:30:54,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:30:54,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:30:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:30:54,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 00:30:54,495 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:30:54,496 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 [2024-11-24 00:30:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:54,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:30:54,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-24 00:30:54,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:30:54,832 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 46 treesize of output 64 [2024-11-24 00:30:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898974070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:30:55,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:30:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-24 00:30:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048311264] [2024-11-24 00:30:55,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:30:55,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 00:30:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:30:55,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 00:30:55,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2024-11-24 00:30:57,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 75 [2024-11-24 00:30:57,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 82 transitions, 503 flow. Second operand has 31 states, 31 states have (on average 40.67741935483871) internal successors, (1261), 31 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:30:57,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:30:57,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 75 [2024-11-24 00:30:57,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:31:03,622 INFO L124 PetriNetUnfolderBase]: 2713/8822 cut-off events. [2024-11-24 00:31:03,622 INFO L125 PetriNetUnfolderBase]: For 4214/4214 co-relation queries the response was YES. [2024-11-24 00:31:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16600 conditions, 8822 events. 2713/8822 cut-off events. For 4214/4214 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 65656 event pairs, 98 based on Foata normal form. 114/7394 useless extension candidates. Maximal degree in co-relation 16571. Up to 342 conditions per place. [2024-11-24 00:31:03,682 INFO L140 encePairwiseOnDemand]: 63/75 looper letters, 627 selfloop transitions, 120 changer transitions 2/775 dead transitions. [2024-11-24 00:31:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 775 transitions, 3931 flow [2024-11-24 00:31:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-24 00:31:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-24 00:31:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2530 transitions. [2024-11-24 00:31:03,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-24 00:31:03,692 INFO L175 Difference]: Start difference. First operand has 113 places, 82 transitions, 503 flow. Second operand 46 states and 2530 transitions. [2024-11-24 00:31:03,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 775 transitions, 3931 flow [2024-11-24 00:31:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 775 transitions, 3813 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-24 00:31:03,719 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1487 flow [2024-11-24 00:31:03,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1487, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-11-24 00:31:03,720 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 115 predicate places. [2024-11-24 00:31:03,720 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1487 flow [2024-11-24 00:31:03,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 40.67741935483871) internal successors, (1261), 31 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:03,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:31:03,722 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:31:03,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:31:03,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 00:31:03,923 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:31:03,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -253111873, now seen corresponding path program 1 times [2024-11-24 00:31:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152555654] [2024-11-24 00:31:03,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 144 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:04,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152555654] [2024-11-24 00:31:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152555654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:31:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999601333] [2024-11-24 00:31:04,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:04,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:31:04,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:31:04,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:31:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:05,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:31:05,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:05,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:05,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 00:31:05,761 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:31:05,761 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 [2024-11-24 00:31:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:05,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:31:06,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-24 00:31:06,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:31:06,062 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 46 treesize of output 64 [2024-11-24 00:31:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999601333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:31:06,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:31:06,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 27 [2024-11-24 00:31:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964220993] [2024-11-24 00:31:06,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:31:06,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:31:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:31:06,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:31:06,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=534, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:31:08,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-24 00:31:08,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1487 flow. Second operand has 29 states, 29 states have (on average 36.758620689655174) internal successors, (1066), 29 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:08,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:31:08,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-24 00:31:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:31:12,504 INFO L124 PetriNetUnfolderBase]: 2784/8809 cut-off events. [2024-11-24 00:31:12,505 INFO L125 PetriNetUnfolderBase]: For 72229/72340 co-relation queries the response was YES. [2024-11-24 00:31:12,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29330 conditions, 8809 events. 2784/8809 cut-off events. For 72229/72340 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 64979 event pairs, 318 based on Foata normal form. 46/7398 useless extension candidates. Maximal degree in co-relation 29257. Up to 671 conditions per place. [2024-11-24 00:31:12,597 INFO L140 encePairwiseOnDemand]: 64/75 looper letters, 425 selfloop transitions, 83 changer transitions 1/535 dead transitions. [2024-11-24 00:31:12,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 535 transitions, 5373 flow [2024-11-24 00:31:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:31:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-24 00:31:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1104 transitions. [2024-11-24 00:31:12,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6690909090909091 [2024-11-24 00:31:12,601 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1487 flow. Second operand 22 states and 1104 transitions. [2024-11-24 00:31:12,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 535 transitions, 5373 flow [2024-11-24 00:31:12,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 535 transitions, 5282 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-24 00:31:12,750 INFO L231 Difference]: Finished difference. Result has 203 places, 202 transitions, 1700 flow [2024-11-24 00:31:12,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1700, PETRI_PLACES=203, PETRI_TRANSITIONS=202} [2024-11-24 00:31:12,751 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 128 predicate places. [2024-11-24 00:31:12,751 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 202 transitions, 1700 flow [2024-11-24 00:31:12,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 36.758620689655174) internal successors, (1066), 29 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:12,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:31:12,752 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:31:12,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:31:12,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:31:12,953 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-24 00:31:12,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash 743467069, now seen corresponding path program 1 times [2024-11-24 00:31:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:12,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156304785] [2024-11-24 00:31:12,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 101 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156304785] [2024-11-24 00:31:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156304785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:31:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284106689] [2024-11-24 00:31:19,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:31:19,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:31:19,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5685bf5d-78b0-4fe5-b51e-f6acb250b96e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:31:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:19,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-24 00:31:19,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:19,948 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 [2024-11-24 00:31:19,982 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 [2024-11-24 00:31:20,010 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2024-11-24 00:31:20,011 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 21 treesize of output 29 [2024-11-24 00:31:20,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:20,109 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 37 treesize of output 17 [2024-11-24 00:31:20,214 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-24 00:31:20,215 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 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-24 00:31:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:20,311 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 37 treesize of output 17 [2024-11-24 00:31:20,409 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-24 00:31:20,410 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 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-24 00:31:20,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:20,516 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 37 treesize of output 17 [2024-11-24 00:31:20,610 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:20,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:20,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:20,736 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 37 treesize of output 17 [2024-11-24 00:31:20,848 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:20,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:20,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:20,978 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 37 treesize of output 17 [2024-11-24 00:31:21,071 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:21,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:21,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:21,180 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 37 treesize of output 17 [2024-11-24 00:31:21,275 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:21,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:21,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:21,392 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 37 treesize of output 17 [2024-11-24 00:31:21,512 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:21,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:21,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:21,651 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 37 treesize of output 17 [2024-11-24 00:31:21,797 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:21,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:31:21,921 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 37 treesize of output 17 [2024-11-24 00:31:22,142 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-24 00:31:22,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2024-11-24 00:31:22,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-24 00:31:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 144 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:22,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:31:49,796 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int)) (or (= (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-24 00:31:52,600 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int)) (or (= (select (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-24 00:31:55,538 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int)) (or (= (select (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-24 00:31:58,925 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int)) (or (= (select (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)))) is different from false [2024-11-24 00:32:02,445 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_92| Int)) (or (= 1 (select (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_92|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|))) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)))) is different from false [2024-11-24 00:32:06,153 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_92| Int) (|v_ULTIMATE.start_new_~p~0#1.base_116| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)) (= (select (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_116| 1) |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_92|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1))) is different from false [2024-11-24 00:32:09,874 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_92| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_94| Int) (|v_ULTIMATE.start_new_~p~0#1.base_116| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_~j~0#1_206| Int)) (or (= (select (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_116| 1) |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_206| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_94|) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_92|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |v_ULTIMATE.start_main_~j~0#1_206| 1)) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (< |v_ULTIMATE.start_main_~j~0#1_206| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)))) is different from false [2024-11-24 00:32:13,793 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_92| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_94| Int) (|v_ULTIMATE.start_new_~p~0#1.base_117| Int) (|v_ULTIMATE.start_new_~p~0#1.base_116| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_~j~0#1_206| Int)) (or (= (select (store (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_117| 1) |v_ULTIMATE.start_new_~p~0#1.base_116| 1) |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_206| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_94|) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_92|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |v_ULTIMATE.start_main_~j~0#1_206| 1)) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (< |v_ULTIMATE.start_main_~j~0#1_206| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)))) is different from false [2024-11-24 00:32:17,811 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~ret37#1.base_86| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_96| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_88| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_90| Int) (|ULTIMATE.start_main_#t~ret37#1.base| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_92| Int) (|v_ULTIMATE.start_main_#t~ret37#1.base_94| Int) (|v_ULTIMATE.start_new_~p~0#1.base_117| Int) (|v_ULTIMATE.start_new_~p~0#1.base_116| Int) (|v_ULTIMATE.start_new_~p~0#1.base_115| Int) (|v_ULTIMATE.start_new_~p~0#1.base_114| Int) (|v_ULTIMATE.start_main_~j~0#1_203| Int) (|v_ULTIMATE.start_new_~p~0#1.base_113| Int) (|v_ULTIMATE.start_main_~j~0#1_202| Int) (|v_ULTIMATE.start_main_~j~0#1_205| Int) (|v_ULTIMATE.start_main_~j~0#1_204| Int) (|v_ULTIMATE.start_main_~j~0#1_207| Int) (|v_ULTIMATE.start_main_~j~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_207| (+ |c_ULTIMATE.start_main_~j~0#1| 1)) (< |v_ULTIMATE.start_main_~j~0#1_206| (+ |v_ULTIMATE.start_main_~j~0#1_207| 1)) (< |v_ULTIMATE.start_main_~j~0#1_205| (+ |v_ULTIMATE.start_main_~j~0#1_206| 1)) (< |v_ULTIMATE.start_main_~j~0#1_203| (+ |v_ULTIMATE.start_main_~j~0#1_204| 1)) (< |v_ULTIMATE.start_main_~j~0#1_202| (+ |v_ULTIMATE.start_main_~j~0#1_203| 1)) (= (select (store (store (store (store (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_117| 1) |v_ULTIMATE.start_new_~p~0#1.base_116| 1) |v_ULTIMATE.start_new_~p~0#1.base_115| 1) |v_ULTIMATE.start_new_~p~0#1.base_114| 1) |v_ULTIMATE.start_new_~p~0#1.base_113| 1) (select (store (store (store (store (store (store (store (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)) |ULTIMATE.start_main_#t~ret37#1.base|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_207| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_96|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_206| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_94|) (+ (* |v_ULTIMATE.start_main_~j~0#1_205| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_92|) (+ (* |v_ULTIMATE.start_main_~j~0#1_204| 4) |c_~#slot~0.offset|) |v_ULTIMATE.start_main_#t~ret37#1.base_90|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_203| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_88|) (+ |c_~#slot~0.offset| (* |v_ULTIMATE.start_main_~j~0#1_202| 4)) |v_ULTIMATE.start_main_#t~ret37#1.base_86|) |c_~#slot~0.offset|)) 1) (< |v_ULTIMATE.start_main_~j~0#1_204| (+ |v_ULTIMATE.start_main_~j~0#1_205| 1)))) is different from false [2024-11-24 00:33:45,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 101 [2024-11-24 00:33:45,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1340096905206 treesize of output 1340029796342 [2024-11-24 00:33:56,956 WARN L286 SmtUtils]: Spent 10.98s on a formula simplification. DAG size of input: 29454 DAG size of output: 256 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)