./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU --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 b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:26,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:26,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:05:26,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:26,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:26,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:26,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:26,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:26,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:26,820 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:26,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:26,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:26,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:26,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:26,825 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:26,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:26,826 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:26,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:26,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:26,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:26,827 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:05:26,828 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:05:26,828 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:05:26,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:26,829 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:05:26,829 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:26,829 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:05:26,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:26,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:26,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:26,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:26,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:26,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:26,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:26,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:26,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:26,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:26,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:26,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:26,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:26,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:26,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:26,835 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b [2024-10-31 22:05:27,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:27,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:27,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:27,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:27,194 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:27,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i Unable to find full path for "g++" [2024-10-31 22:05:29,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:29,674 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:29,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i [2024-10-31 22:05:29,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/data/30ee8c45c/f62f172bf2a940e294c6cb10c68fae23/FLAG2ecd50548 [2024-10-31 22:05:29,949 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/data/30ee8c45c/f62f172bf2a940e294c6cb10c68fae23 [2024-10-31 22:05:29,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:29,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:29,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:29,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:29,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:29,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:29" (1/1) ... [2024-10-31 22:05:29,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424e91e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:29, skipping insertion in model container [2024-10-31 22:05:29,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:29" (1/1) ... [2024-10-31 22:05:30,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:30,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:30,845 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:30,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:31,051 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:31,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31 WrapperNode [2024-10-31 22:05:31,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:31,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:31,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:31,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:31,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,155 INFO L138 Inliner]: procedures = 372, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 229 [2024-10-31 22:05:31,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:31,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:31,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:31,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:31,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,224 INFO L175 MemorySlicer]: Split 90 memory accesses to 3 slices as follows [50, 16, 24]. 56 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [50, 10, 0]. The 19 writes are split as follows [0, 1, 18]. [2024-10-31 22:05:31,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:31,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:31,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:31,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:31,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (1/1) ... [2024-10-31 22:05:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:31,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:31,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:05:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:05:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:05:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:05:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:05:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:05:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:05:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:05:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:05:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:05:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:05:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:05:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:05:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:05:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:05:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:05:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:05:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:31,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:31,361 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:05:31,545 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:31,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:32,293 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:05:32,294 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:32,887 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:32,888 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:05:32,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:32 BoogieIcfgContainer [2024-10-31 22:05:32,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:32,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:32,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:32,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:32,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:29" (1/3) ... [2024-10-31 22:05:32,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476e5ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:32, skipping insertion in model container [2024-10-31 22:05:32,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:31" (2/3) ... [2024-10-31 22:05:32,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476e5ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:32, skipping insertion in model container [2024-10-31 22:05:32,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:32" (3/3) ... [2024-10-31 22:05:32,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_13-arraycollapse_nr.i [2024-10-31 22:05:32,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:32,919 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-10-31 22:05:32,919 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:05:33,001 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:05:33,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 107 transitions, 218 flow [2024-10-31 22:05:33,127 INFO L124 PetriNetUnfolderBase]: 1/106 cut-off events. [2024-10-31 22:05:33,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:33,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 1/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 328 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-10-31 22:05:33,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 107 transitions, 218 flow [2024-10-31 22:05:33,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 106 transitions, 215 flow [2024-10-31 22:05:33,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:33,168 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;@71a54d2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:33,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-10-31 22:05:33,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:05:33,175 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:05:33,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:33,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:33,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:05:33,178 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:33,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash 661789, now seen corresponding path program 1 times [2024-10-31 22:05:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028331519] [2024-10-31 22:05:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028331519] [2024-10-31 22:05:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028331519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281992700] [2024-10-31 22:05:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:33,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:33,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 107 [2024-10-31 22:05:33,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:33,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:33,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 107 [2024-10-31 22:05:33,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:34,182 INFO L124 PetriNetUnfolderBase]: 64/293 cut-off events. [2024-10-31 22:05:34,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:34,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 293 events. 64/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1323 event pairs, 63 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 376. Up to 157 conditions per place. [2024-10-31 22:05:34,192 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 30 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2024-10-31 22:05:34,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 275 flow [2024-10-31 22:05:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2024-10-31 22:05:34,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7133956386292835 [2024-10-31 22:05:34,217 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 215 flow. Second operand 3 states and 229 transitions. [2024-10-31 22:05:34,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 275 flow [2024-10-31 22:05:34,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:34,229 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 214 flow [2024-10-31 22:05:34,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-10-31 22:05:34,240 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-10-31 22:05:34,241 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 214 flow [2024-10-31 22:05:34,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:34,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:05:34,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:34,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:34,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash 661790, now seen corresponding path program 1 times [2024-10-31 22:05:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907284043] [2024-10-31 22:05:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:34,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:34,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907284043] [2024-10-31 22:05:34,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907284043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:34,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:34,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448576517] [2024-10-31 22:05:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:34,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:34,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 107 [2024-10-31 22:05:34,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:34,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 107 [2024-10-31 22:05:34,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:34,876 INFO L124 PetriNetUnfolderBase]: 64/285 cut-off events. [2024-10-31 22:05:34,876 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-31 22:05:34,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 285 events. 64/285 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1284 event pairs, 63 based on Foata normal form. 8/226 useless extension candidates. Maximal degree in co-relation 395. Up to 157 conditions per place. [2024-10-31 22:05:34,880 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 26 selfloop transitions, 8 changer transitions 0/90 dead transitions. [2024-10-31 22:05:34,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 266 flow [2024-10-31 22:05:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-10-31 22:05:34,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7383177570093458 [2024-10-31 22:05:34,884 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 214 flow. Second operand 3 states and 237 transitions. [2024-10-31 22:05:34,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 266 flow [2024-10-31 22:05:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:34,887 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 198 flow [2024-10-31 22:05:34,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-10-31 22:05:34,888 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -15 predicate places. [2024-10-31 22:05:34,889 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 198 flow [2024-10-31 22:05:34,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:34,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:34,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:05:34,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:34,890 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash 636000131, now seen corresponding path program 1 times [2024-10-31 22:05:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:34,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58881740] [2024-10-31 22:05:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:35,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:35,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58881740] [2024-10-31 22:05:35,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58881740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:35,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:35,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941618881] [2024-10-31 22:05:35,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:35,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:35,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:35,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 107 [2024-10-31 22:05:35,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:35,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:35,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 107 [2024-10-31 22:05:35,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:35,729 INFO L124 PetriNetUnfolderBase]: 73/305 cut-off events. [2024-10-31 22:05:35,729 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:05:35,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 305 events. 73/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1389 event pairs, 72 based on Foata normal form. 1/245 useless extension candidates. Maximal degree in co-relation 437. Up to 183 conditions per place. [2024-10-31 22:05:35,732 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 38 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2024-10-31 22:05:35,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 264 flow [2024-10-31 22:05:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2024-10-31 22:05:35,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.719626168224299 [2024-10-31 22:05:35,735 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 198 flow. Second operand 3 states and 231 transitions. [2024-10-31 22:05:35,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 264 flow [2024-10-31 22:05:35,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:35,739 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 172 flow [2024-10-31 22:05:35,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2024-10-31 22:05:35,740 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -21 predicate places. [2024-10-31 22:05:35,741 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 172 flow [2024-10-31 22:05:35,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:35,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:35,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:05:35,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:35,742 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:35,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash 636000132, now seen corresponding path program 1 times [2024-10-31 22:05:35,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:35,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477420255] [2024-10-31 22:05:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477420255] [2024-10-31 22:05:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477420255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:36,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:36,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863803900] [2024-10-31 22:05:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:36,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:36,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:36,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-31 22:05:36,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:36,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:36,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-31 22:05:36,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:36,650 INFO L124 PetriNetUnfolderBase]: 64/291 cut-off events. [2024-10-31 22:05:36,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:36,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 291 events. 64/291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1224 event pairs, 63 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 460. Up to 163 conditions per place. [2024-10-31 22:05:36,652 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 37 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-31 22:05:36,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 272 flow [2024-10-31 22:05:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-10-31 22:05:36,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6401869158878505 [2024-10-31 22:05:36,655 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 172 flow. Second operand 4 states and 274 transitions. [2024-10-31 22:05:36,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 272 flow [2024-10-31 22:05:36,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:36,659 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 219 flow [2024-10-31 22:05:36,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-10-31 22:05:36,661 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -17 predicate places. [2024-10-31 22:05:36,661 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 219 flow [2024-10-31 22:05:36,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:36,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:36,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:36,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:36,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:36,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1245755487, now seen corresponding path program 1 times [2024-10-31 22:05:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755665320] [2024-10-31 22:05:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:37,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:37,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755665320] [2024-10-31 22:05:37,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755665320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:37,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:37,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136069475] [2024-10-31 22:05:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:37,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:37,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:37,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2024-10-31 22:05:37,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:37,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:37,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2024-10-31 22:05:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:37,969 INFO L124 PetriNetUnfolderBase]: 64/285 cut-off events. [2024-10-31 22:05:37,970 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:05:37,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 285 events. 64/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1182 event pairs, 63 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 482. Up to 154 conditions per place. [2024-10-31 22:05:37,975 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 30 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-10-31 22:05:37,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 307 flow [2024-10-31 22:05:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:05:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 463 transitions. [2024-10-31 22:05:37,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5408878504672897 [2024-10-31 22:05:37,981 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 219 flow. Second operand 8 states and 463 transitions. [2024-10-31 22:05:37,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 307 flow [2024-10-31 22:05:37,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:37,990 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 245 flow [2024-10-31 22:05:37,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=245, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-10-31 22:05:37,991 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -15 predicate places. [2024-10-31 22:05:37,991 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 245 flow [2024-10-31 22:05:37,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:37,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:37,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:37,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:05:37,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:37,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1245755488, now seen corresponding path program 1 times [2024-10-31 22:05:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644248451] [2024-10-31 22:05:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:38,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:38,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644248451] [2024-10-31 22:05:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644248451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049795615] [2024-10-31 22:05:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:38,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:38,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:39,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2024-10-31 22:05:39,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:39,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:39,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2024-10-31 22:05:39,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:40,158 INFO L124 PetriNetUnfolderBase]: 64/281 cut-off events. [2024-10-31 22:05:40,158 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-31 22:05:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 281 events. 64/281 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1180 event pairs, 63 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 494. Up to 158 conditions per place. [2024-10-31 22:05:40,160 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 32 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-10-31 22:05:40,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 335 flow [2024-10-31 22:05:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:05:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 373 transitions. [2024-10-31 22:05:40,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979973297730307 [2024-10-31 22:05:40,163 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 245 flow. Second operand 7 states and 373 transitions. [2024-10-31 22:05:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 335 flow [2024-10-31 22:05:40,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 299 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 22:05:40,167 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 235 flow [2024-10-31 22:05:40,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-10-31 22:05:40,168 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -18 predicate places. [2024-10-31 22:05:40,168 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 235 flow [2024-10-31 22:05:40,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:40,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:40,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:40,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:05:40,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:40,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1124829933, now seen corresponding path program 1 times [2024-10-31 22:05:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246469864] [2024-10-31 22:05:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246469864] [2024-10-31 22:05:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246469864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996938276] [2024-10-31 22:05:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:40,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:40,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-31 22:05:40,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:40,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:40,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-31 22:05:40,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:40,904 INFO L124 PetriNetUnfolderBase]: 64/279 cut-off events. [2024-10-31 22:05:40,905 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:05:40,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 279 events. 64/279 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 63 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 487. Up to 158 conditions per place. [2024-10-31 22:05:40,907 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 30 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-10-31 22:05:40,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 82 transitions, 323 flow [2024-10-31 22:05:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:05:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2024-10-31 22:05:40,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6186915887850467 [2024-10-31 22:05:40,909 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 235 flow. Second operand 5 states and 331 transitions. [2024-10-31 22:05:40,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 82 transitions, 323 flow [2024-10-31 22:05:40,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 293 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:05:40,912 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 233 flow [2024-10-31 22:05:40,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2024-10-31 22:05:40,914 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -21 predicate places. [2024-10-31 22:05:40,914 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 233 flow [2024-10-31 22:05:40,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:40,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:40,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:40,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:05:40,915 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:40,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1124829932, now seen corresponding path program 1 times [2024-10-31 22:05:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:40,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518060787] [2024-10-31 22:05:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:41,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518060787] [2024-10-31 22:05:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518060787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:41,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637593072] [2024-10-31 22:05:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:41,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:41,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 107 [2024-10-31 22:05:41,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:41,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:41,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 107 [2024-10-31 22:05:41,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:41,746 INFO L124 PetriNetUnfolderBase]: 64/277 cut-off events. [2024-10-31 22:05:41,746 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-31 22:05:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 277 events. 64/277 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1161 event pairs, 63 based on Foata normal form. 2/229 useless extension candidates. Maximal degree in co-relation 479. Up to 158 conditions per place. [2024-10-31 22:05:41,748 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 26 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-10-31 22:05:41,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 81 transitions, 313 flow [2024-10-31 22:05:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:05:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:05:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2024-10-31 22:05:41,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485981308411215 [2024-10-31 22:05:41,751 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 233 flow. Second operand 5 states and 347 transitions. [2024-10-31 22:05:41,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 81 transitions, 313 flow [2024-10-31 22:05:41,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 81 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:05:41,754 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 231 flow [2024-10-31 22:05:41,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-31 22:05:41,756 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -22 predicate places. [2024-10-31 22:05:41,756 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 231 flow [2024-10-31 22:05:41,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:41,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:41,757 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:41,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:05:41,757 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:41,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1778571907, now seen corresponding path program 1 times [2024-10-31 22:05:41,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261431304] [2024-10-31 22:05:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261431304] [2024-10-31 22:05:42,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261431304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703170105] [2024-10-31 22:05:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:42,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:42,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:42,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-31 22:05:42,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:42,803 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:42,804 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 [2024-10-31 22:05:42,819 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 [2024-10-31 22:05:42,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:05:42,972 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-31 22:05:42,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-31 22:05:43,012 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:43,013 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 [2024-10-31 22:05:43,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:43,259 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 [2024-10-31 22:05:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:43,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:43,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:05:43,674 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 [2024-10-31 22:05:43,781 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-31 22:05:43,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-10-31 22:05:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703170105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:43,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 4] total 17 [2024-10-31 22:05:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570012234] [2024-10-31 22:05:43,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:43,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:05:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:05:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:05:49,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 107 [2024-10-31 22:05:49,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 231 flow. Second operand has 19 states, 19 states have (on average 57.73684210526316) internal successors, (1097), 19 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:49,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:49,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 107 [2024-10-31 22:05:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:49,979 INFO L124 PetriNetUnfolderBase]: 75/332 cut-off events. [2024-10-31 22:05:49,979 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-31 22:05:49,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 332 events. 75/332 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1455 event pairs, 72 based on Foata normal form. 6/281 useless extension candidates. Maximal degree in co-relation 602. Up to 178 conditions per place. [2024-10-31 22:05:49,981 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 46 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-10-31 22:05:49,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 459 flow [2024-10-31 22:05:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:05:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 685 transitions. [2024-10-31 22:05:49,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5819881053525914 [2024-10-31 22:05:49,985 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 231 flow. Second operand 11 states and 685 transitions. [2024-10-31 22:05:49,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 459 flow [2024-10-31 22:05:49,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 101 transitions, 393 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:05:49,993 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 305 flow [2024-10-31 22:05:49,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=305, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-10-31 22:05:49,994 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -12 predicate places. [2024-10-31 22:05:49,996 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 305 flow [2024-10-31 22:05:49,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.73684210526316) internal successors, (1097), 19 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:49,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:49,998 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:05:50,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:05:50,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:50,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:50,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash -973661121, now seen corresponding path program 1 times [2024-10-31 22:05:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788644888] [2024-10-31 22:05:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788644888] [2024-10-31 22:05:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788644888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874405581] [2024-10-31 22:05:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:50,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:50,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:50,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:50,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:50,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874405581] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:50,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:50,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-31 22:05:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605781000] [2024-10-31 22:05:50,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:50,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:05:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:05:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:50,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 107 [2024-10-31 22:05:50,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 305 flow. Second operand has 9 states, 9 states have (on average 77.55555555555556) internal successors, (698), 9 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 107 [2024-10-31 22:05:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:51,377 INFO L124 PetriNetUnfolderBase]: 64/318 cut-off events. [2024-10-31 22:05:51,377 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-10-31 22:05:51,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 318 events. 64/318 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1129 event pairs, 63 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 603. Up to 154 conditions per place. [2024-10-31 22:05:51,379 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 62 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2024-10-31 22:05:51,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 541 flow [2024-10-31 22:05:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:05:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 658 transitions. [2024-10-31 22:05:51,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7686915887850467 [2024-10-31 22:05:51,382 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 305 flow. Second operand 8 states and 658 transitions. [2024-10-31 22:05:51,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 111 transitions, 541 flow [2024-10-31 22:05:51,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 111 transitions, 521 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:51,390 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 321 flow [2024-10-31 22:05:51,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-10-31 22:05:51,393 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-10-31 22:05:51,396 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 321 flow [2024-10-31 22:05:51,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.55555555555556) internal successors, (698), 9 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:51,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:51,397 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-10-31 22:05:51,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:05:51,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:05:51,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-10-31 22:05:51,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:51,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2049655832, now seen corresponding path program 2 times [2024-10-31 22:05:51,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:51,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719002671] [2024-10-31 22:05:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:51,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:53,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719002671] [2024-10-31 22:05:53,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719002671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:53,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671383005] [2024-10-31 22:05:53,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:05:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:53,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:53,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f302076-39b0-4982-bbce-adfb29284bd3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:05:54,298 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:05:54,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:05:54,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-10-31 22:05:54,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:54,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:54,377 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 [2024-10-31 22:05:54,448 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:54,448 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 [2024-10-31 22:05:54,460 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 [2024-10-31 22:05:54,704 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-31 22:05:54,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-31 22:05:54,726 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:54,726 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 [2024-10-31 22:05:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:54,860 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 [2024-10-31 22:05:54,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:05:55,127 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-31 22:05:55,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-31 22:05:55,151 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:55,152 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 [2024-10-31 22:05:55,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-10-31 22:05:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:55,333 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 [2024-10-31 22:05:55,668 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:55,669 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 [2024-10-31 22:05:55,685 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 [2024-10-31 22:05:55,881 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-31 22:05:55,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-31 22:05:55,910 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:05:55,910 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 [2024-10-31 22:05:55,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-10-31 22:05:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:05:56,300 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 [2024-10-31 22:05:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:56,383 INFO L311 TraceCheckSpWp]: Computing backward predicates...