./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB --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 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:00:39,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:00:39,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:00:39,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:00:39,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:00:39,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:00:39,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:00:39,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:00:39,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:00:39,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:00:39,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:00:39,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:00:39,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:00:39,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:00:39,940 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:00:39,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:00:39,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:00:39,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:00:39,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:00:39,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:00:39,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:00:39,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:00:39,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:00:39,942 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:00:39,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:39,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:39,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:39,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:00:39,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:00:39,949 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-28 03:00:40,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:00:40,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:00:40,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:00:40,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:00:40,418 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:00:40,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-28 03:00:44,280 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/data/891ad7c9f/ffa25b07dcef4b1b98584d0827765b17/FLAG11c3c9b20 [2024-11-28 03:00:44,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:00:44,752 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-28 03:00:44,787 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/data/891ad7c9f/ffa25b07dcef4b1b98584d0827765b17/FLAG11c3c9b20 [2024-11-28 03:00:44,822 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/data/891ad7c9f/ffa25b07dcef4b1b98584d0827765b17 [2024-11-28 03:00:44,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:00:44,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:00:44,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:44,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:00:44,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:00:44,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:44" (1/1) ... [2024-11-28 03:00:44,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b33672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:44, skipping insertion in model container [2024-11-28 03:00:44,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:44" (1/1) ... [2024-11-28 03:00:44,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:00:46,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:46,072 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:00:46,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:46,349 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:00:46,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46 WrapperNode [2024-11-28 03:00:46,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:46,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:46,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:00:46,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:00:46,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,469 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 170 [2024-11-28 03:00:46,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:46,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:00:46,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:00:46,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:00:46,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,510 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 5, 30]. 81 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 3, 8]. The 13 writes are split as follows [0, 1, 12]. [2024-11-28 03:00:46,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:00:46,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:00:46,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:00:46,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:00:46,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2024-11-28 03:00:46,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:46,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:00:46,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:00:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:00:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:00:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:00:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:00:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-28 03:00:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-28 03:00:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:00:46,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:00:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:00:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:00:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:00:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:00:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:00:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:00:46,649 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:00:47,124 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:00:47,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:00:47,801 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:00:47,802 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:00:48,282 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:00:48,284 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 03:00:48,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:48 BoogieIcfgContainer [2024-11-28 03:00:48,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:00:48,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:00:48,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:00:48,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:00:48,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:44" (1/3) ... [2024-11-28 03:00:48,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d71b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:48, skipping insertion in model container [2024-11-28 03:00:48,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (2/3) ... [2024-11-28 03:00:48,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d71b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:48, skipping insertion in model container [2024-11-28 03:00:48,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:48" (3/3) ... [2024-11-28 03:00:48,300 INFO L128 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-28 03:00:48,323 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:00:48,326 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safestack_relacy.i that has 2 procedures, 104 locations, 1 initial locations, 7 loop locations, and 50 error locations. [2024-11-28 03:00:48,326 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:00:48,461 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 03:00:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 117 transitions, 241 flow [2024-11-28 03:00:48,610 INFO L124 PetriNetUnfolderBase]: 13/129 cut-off events. [2024-11-28 03:00:48,614 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:00:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 129 events. 13/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 461 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-28 03:00:48,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 117 transitions, 241 flow [2024-11-28 03:00:48,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 117 transitions, 241 flow [2024-11-28 03:00:48,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:00:48,674 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;@579bf4d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:00:48,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-28 03:00:48,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:00:48,680 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 03:00:48,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:00:48,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:48,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:00:48,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:48,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 18677, now seen corresponding path program 1 times [2024-11-28 03:00:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234948252] [2024-11-28 03:00:48,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234948252] [2024-11-28 03:00:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234948252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:00:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283929301] [2024-11-28 03:00:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:49,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:49,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:49,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:49,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:49,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:49,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:49,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:49,881 INFO L124 PetriNetUnfolderBase]: 223/549 cut-off events. [2024-11-28 03:00:49,881 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2024-11-28 03:00:49,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 549 events. 223/549 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2393 event pairs, 185 based on Foata normal form. 24/410 useless extension candidates. Maximal degree in co-relation 954. Up to 455 conditions per place. [2024-11-28 03:00:49,891 INFO L140 encePairwiseOnDemand]: 83/117 looper letters, 60 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2024-11-28 03:00:49,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 295 flow [2024-11-28 03:00:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:00:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-28 03:00:49,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-11-28 03:00:49,913 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 241 flow. Second operand 3 states and 163 transitions. [2024-11-28 03:00:49,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 295 flow [2024-11-28 03:00:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:00:49,927 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 175 flow [2024-11-28 03:00:49,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-11-28 03:00:49,938 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-28 03:00:49,938 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 175 flow [2024-11-28 03:00:49,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:49,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:49,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:00:49,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:00:49,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:49,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:49,942 INFO L85 PathProgramCache]: Analyzing trace with hash 18678, now seen corresponding path program 1 times [2024-11-28 03:00:49,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:49,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135850825] [2024-11-28 03:00:49,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:49,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:50,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135850825] [2024-11-28 03:00:50,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135850825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:50,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:50,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:00:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650379537] [2024-11-28 03:00:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:50,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:50,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:50,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:50,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-28 03:00:50,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:50,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:50,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-28 03:00:50,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:50,629 INFO L124 PetriNetUnfolderBase]: 188/470 cut-off events. [2024-11-28 03:00:50,630 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-28 03:00:50,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 470 events. 188/470 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1971 event pairs, 150 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 847. Up to 376 conditions per place. [2024-11-28 03:00:50,636 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-11-28 03:00:50,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 261 flow [2024-11-28 03:00:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:00:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-28 03:00:50,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-11-28 03:00:50,643 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 136 transitions. [2024-11-28 03:00:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 261 flow [2024-11-28 03:00:50,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:00:50,648 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 158 flow [2024-11-28 03:00:50,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-28 03:00:50,650 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -35 predicate places. [2024-11-28 03:00:50,650 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 158 flow [2024-11-28 03:00:50,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:50,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:50,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:00:50,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:00:50,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:50,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 90180874, now seen corresponding path program 1 times [2024-11-28 03:00:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394529618] [2024-11-28 03:00:50,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:51,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394529618] [2024-11-28 03:00:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394529618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:51,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:00:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542697597] [2024-11-28 03:00:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:51,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:51,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:51,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:51,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-28 03:00:51,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:51,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:51,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-28 03:00:51,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:51,427 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-28 03:00:51,427 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-28 03:00:51,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 477 events. 189/477 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1997 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 861. Up to 378 conditions per place. [2024-11-28 03:00:51,434 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 55 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-28 03:00:51,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 288 flow [2024-11-28 03:00:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-28 03:00:51,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-28 03:00:51,439 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 158 flow. Second operand 4 states and 156 transitions. [2024-11-28 03:00:51,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 288 flow [2024-11-28 03:00:51,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:00:51,444 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 178 flow [2024-11-28 03:00:51,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-28 03:00:51,446 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -32 predicate places. [2024-11-28 03:00:51,446 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 178 flow [2024-11-28 03:00:51,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:51,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:51,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:00:51,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:00:51,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:51,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 90180893, now seen corresponding path program 1 times [2024-11-28 03:00:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:51,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348637615] [2024-11-28 03:00:51,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348637615] [2024-11-28 03:00:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348637615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:51,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102370314] [2024-11-28 03:00:51,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:51,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:51,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:51,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-28 03:00:51,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:51,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:51,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-28 03:00:51,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:51,987 INFO L124 PetriNetUnfolderBase]: 188/473 cut-off events. [2024-11-28 03:00:51,988 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2024-11-28 03:00:51,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 473 events. 188/473 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1962 event pairs, 150 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 859. Up to 368 conditions per place. [2024-11-28 03:00:51,992 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 51 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-28 03:00:51,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 285 flow [2024-11-28 03:00:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-28 03:00:51,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3247863247863248 [2024-11-28 03:00:51,995 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 178 flow. Second operand 4 states and 152 transitions. [2024-11-28 03:00:51,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 285 flow [2024-11-28 03:00:51,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:51,998 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 179 flow [2024-11-28 03:00:51,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-28 03:00:51,999 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-28 03:00:51,999 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 179 flow [2024-11-28 03:00:52,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:52,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:52,000 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:52,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:00:52,000 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:52,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2070544151, now seen corresponding path program 1 times [2024-11-28 03:00:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466763355] [2024-11-28 03:00:52,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466763355] [2024-11-28 03:00:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466763355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12468460] [2024-11-28 03:00:52,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:52,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:52,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:00:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:52,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:00:52,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:53,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-28 03:00:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12468460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:53,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:53,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-28 03:00:53,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464401630] [2024-11-28 03:00:53,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:53,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:00:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:53,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:00:53,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:00:53,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:53,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:53,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:53,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:54,373 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-28 03:00:54,375 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-28 03:00:54,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 477 events. 189/477 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1987 event pairs, 150 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-28 03:00:54,379 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 54 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-11-28 03:00:54,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 315 flow [2024-11-28 03:00:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:00:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:00:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-11-28 03:00:54,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27228327228327226 [2024-11-28 03:00:54,385 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 179 flow. Second operand 7 states and 223 transitions. [2024-11-28 03:00:54,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 315 flow [2024-11-28 03:00:54,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:00:54,392 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 190 flow [2024-11-28 03:00:54,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-28 03:00:54,396 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-28 03:00:54,398 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 190 flow [2024-11-28 03:00:54,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:54,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:54,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:54,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:00:54,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:54,601 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:54,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2070544132, now seen corresponding path program 1 times [2024-11-28 03:00:54,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:54,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486553398] [2024-11-28 03:00:54,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:54,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:54,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486553398] [2024-11-28 03:00:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486553398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290543449] [2024-11-28 03:00:54,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:54,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:54,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:00:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:54,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:55,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290543449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:55,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:00:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835616956] [2024-11-28 03:00:55,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:55,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:00:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:55,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:00:55,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:55,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:55,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:55,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:55,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:55,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:55,433 INFO L124 PetriNetUnfolderBase]: 188/475 cut-off events. [2024-11-28 03:00:55,433 INFO L125 PetriNetUnfolderBase]: For 16/18 co-relation queries the response was YES. [2024-11-28 03:00:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 475 events. 188/475 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1967 event pairs, 150 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 875. Up to 368 conditions per place. [2024-11-28 03:00:55,438 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 52 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-11-28 03:00:55,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 319 flow [2024-11-28 03:00:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:00:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-28 03:00:55,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-11-28 03:00:55,441 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 190 flow. Second operand 6 states and 198 transitions. [2024-11-28 03:00:55,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 319 flow [2024-11-28 03:00:55,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-28 03:00:55,445 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 200 flow [2024-11-28 03:00:55,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-28 03:00:55,447 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -25 predicate places. [2024-11-28 03:00:55,447 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 200 flow [2024-11-28 03:00:55,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:55,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:55,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:55,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:00:55,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:55,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:55,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash 740068541, now seen corresponding path program 2 times [2024-11-28 03:00:55,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:55,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137551605] [2024-11-28 03:00:55,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:55,687 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:00:55,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:00:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137551605] [2024-11-28 03:00:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137551605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:00:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284738247] [2024-11-28 03:00:55,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:55,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:55,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:55,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:55,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-28 03:00:55,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:55,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:55,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-28 03:00:55,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:56,117 INFO L124 PetriNetUnfolderBase]: 188/474 cut-off events. [2024-11-28 03:00:56,117 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2024-11-28 03:00:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 474 events. 188/474 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1966 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-28 03:00:56,121 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 50 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-28 03:00:56,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 302 flow [2024-11-28 03:00:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:00:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-28 03:00:56,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-11-28 03:00:56,123 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 200 flow. Second operand 3 states and 126 transitions. [2024-11-28 03:00:56,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 302 flow [2024-11-28 03:00:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:00:56,127 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 188 flow [2024-11-28 03:00:56,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-11-28 03:00:56,128 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -28 predicate places. [2024-11-28 03:00:56,128 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 188 flow [2024-11-28 03:00:56,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:56,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:56,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:56,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:00:56,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:56,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1315395413, now seen corresponding path program 1 times [2024-11-28 03:00:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765859995] [2024-11-28 03:00:56,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:00:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765859995] [2024-11-28 03:00:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765859995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:00:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837686702] [2024-11-28 03:00:56,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:56,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:56,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:56,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:56,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:56,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:56,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:56,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:56,544 INFO L124 PetriNetUnfolderBase]: 188/468 cut-off events. [2024-11-28 03:00:56,544 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-28 03:00:56,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 468 events. 188/468 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1920 event pairs, 150 based on Foata normal form. 64/428 useless extension candidates. Maximal degree in co-relation 862. Up to 378 conditions per place. [2024-11-28 03:00:56,550 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2024-11-28 03:00:56,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 288 flow [2024-11-28 03:00:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:00:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-28 03:00:56,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2024-11-28 03:00:56,552 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 188 flow. Second operand 3 states and 121 transitions. [2024-11-28 03:00:56,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 288 flow [2024-11-28 03:00:56,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:56,555 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 182 flow [2024-11-28 03:00:56,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-28 03:00:56,556 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-28 03:00:56,556 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 182 flow [2024-11-28 03:00:56,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:56,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:56,557 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:56,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:00:56,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:56,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1315395414, now seen corresponding path program 1 times [2024-11-28 03:00:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546027976] [2024-11-28 03:00:56,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:56,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:00:56,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546027976] [2024-11-28 03:00:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546027976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:56,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:56,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:00:56,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594637419] [2024-11-28 03:00:56,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:56,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:56,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:56,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:56,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:56,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:56,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:56,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:56,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:57,199 INFO L124 PetriNetUnfolderBase]: 151/421 cut-off events. [2024-11-28 03:00:57,200 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2024-11-28 03:00:57,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 421 events. 151/421 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2026 event pairs, 34 based on Foata normal form. 61/401 useless extension candidates. Maximal degree in co-relation 758. Up to 217 conditions per place. [2024-11-28 03:00:57,203 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 83 selfloop transitions, 5 changer transitions 1/108 dead transitions. [2024-11-28 03:00:57,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 430 flow [2024-11-28 03:00:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-28 03:00:57,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2024-11-28 03:00:57,206 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 182 flow. Second operand 4 states and 183 transitions. [2024-11-28 03:00:57,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 430 flow [2024-11-28 03:00:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:00:57,212 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 199 flow [2024-11-28 03:00:57,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-11-28 03:00:57,214 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-28 03:00:57,214 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 199 flow [2024-11-28 03:00:57,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:57,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:57,215 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:57,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:00:57,215 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:57,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1831196731, now seen corresponding path program 1 times [2024-11-28 03:00:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905538915] [2024-11-28 03:00:57,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:57,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:00:57,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905538915] [2024-11-28 03:00:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905538915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:57,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:57,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:57,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461575802] [2024-11-28 03:00:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:57,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:00:57,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:57,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:00:57,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:00:57,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-28 03:00:57,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:57,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:57,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-28 03:00:57,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:57,917 INFO L124 PetriNetUnfolderBase]: 79/256 cut-off events. [2024-11-28 03:00:57,917 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-28 03:00:57,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 256 events. 79/256 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1029 event pairs, 13 based on Foata normal form. 66/289 useless extension candidates. Maximal degree in co-relation 515. Up to 134 conditions per place. [2024-11-28 03:00:57,920 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 79 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-28 03:00:57,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 400 flow [2024-11-28 03:00:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:00:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:00:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-28 03:00:57,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3367521367521368 [2024-11-28 03:00:57,922 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 199 flow. Second operand 5 states and 197 transitions. [2024-11-28 03:00:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 400 flow [2024-11-28 03:00:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 392 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:00:57,926 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 164 flow [2024-11-28 03:00:57,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-11-28 03:00:57,928 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, -36 predicate places. [2024-11-28 03:00:57,928 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 164 flow [2024-11-28 03:00:57,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:57,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:57,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:57,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:00:57,929 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-28 03:00:57,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -932523141, now seen corresponding path program 1 times [2024-11-28 03:00:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716476550] [2024-11-28 03:00:57,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:00:57,970 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:00:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:00:58,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:00:58,034 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:00:58,036 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (87 of 88 remaining) [2024-11-28 03:00:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 88 remaining) [2024-11-28 03:00:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 88 remaining) [2024-11-28 03:00:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 88 remaining) [2024-11-28 03:00:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (74 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 88 remaining) [2024-11-28 03:00:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 88 remaining) [2024-11-28 03:00:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 88 remaining) [2024-11-28 03:00:58,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 88 remaining) [2024-11-28 03:00:58,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 88 remaining) [2024-11-28 03:00:58,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 88 remaining) [2024-11-28 03:00:58,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 88 remaining) [2024-11-28 03:00:58,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 88 remaining) [2024-11-28 03:00:58,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 88 remaining) [2024-11-28 03:00:58,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 88 remaining) [2024-11-28 03:00:58,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 88 remaining) [2024-11-28 03:00:58,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 88 remaining) [2024-11-28 03:00:58,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:00:58,050 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:58,053 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:00:58,053 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:00:58,162 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:00:58,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 201 transitions, 418 flow [2024-11-28 03:00:58,220 INFO L124 PetriNetUnfolderBase]: 26/237 cut-off events. [2024-11-28 03:00:58,220 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 03:00:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 237 events. 26/237 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1213 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2024-11-28 03:00:58,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 201 transitions, 418 flow [2024-11-28 03:00:58,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 201 transitions, 418 flow [2024-11-28 03:00:58,231 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:00:58,231 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;@579bf4d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:00:58,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 125 error locations. [2024-11-28 03:00:58,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:00:58,233 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 03:00:58,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:00:58,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:58,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:00:58,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:00:58,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash 25109, now seen corresponding path program 1 times [2024-11-28 03:00:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075907923] [2024-11-28 03:00:58,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075907923] [2024-11-28 03:00:58,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075907923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:58,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:58,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:00:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059108756] [2024-11-28 03:00:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:58,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:58,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:58,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:58,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-28 03:00:58,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 201 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:58,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:58,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-28 03:00:58,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:03,557 INFO L124 PetriNetUnfolderBase]: 19095/30098 cut-off events. [2024-11-28 03:01:03,558 INFO L125 PetriNetUnfolderBase]: For 330/335 co-relation queries the response was YES. [2024-11-28 03:01:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58614 conditions, 30098 events. 19095/30098 cut-off events. For 330/335 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 205115 event pairs, 16870 based on Foata normal form. 1814/22601 useless extension candidates. Maximal degree in co-relation 55727. Up to 28317 conditions per place. [2024-11-28 03:01:03,913 INFO L140 encePairwiseOnDemand]: 138/201 looper letters, 103 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2024-11-28 03:01:03,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 498 flow [2024-11-28 03:01:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2024-11-28 03:01:03,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4494195688225539 [2024-11-28 03:01:03,918 INFO L175 Difference]: Start difference. First operand has 181 places, 201 transitions, 418 flow. Second operand 3 states and 271 transitions. [2024-11-28 03:01:03,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 498 flow [2024-11-28 03:01:03,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:01:03,923 INFO L231 Difference]: Finished difference. Result has 129 places, 137 transitions, 292 flow [2024-11-28 03:01:03,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=129, PETRI_TRANSITIONS=137} [2024-11-28 03:01:03,927 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -52 predicate places. [2024-11-28 03:01:03,927 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 292 flow [2024-11-28 03:01:03,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:03,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:03,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:01:03,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:01:03,928 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:03,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash 25110, now seen corresponding path program 1 times [2024-11-28 03:01:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032389101] [2024-11-28 03:01:03,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032389101] [2024-11-28 03:01:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032389101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925686665] [2024-11-28 03:01:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:04,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:04,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:04,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-28 03:01:04,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 137 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:04,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:04,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-28 03:01:04,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:07,238 INFO L124 PetriNetUnfolderBase]: 13222/20991 cut-off events. [2024-11-28 03:01:07,239 INFO L125 PetriNetUnfolderBase]: For 269/274 co-relation queries the response was YES. [2024-11-28 03:01:07,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40552 conditions, 20991 events. 13222/20991 cut-off events. For 269/274 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 137119 event pairs, 11340 based on Foata normal form. 0/16305 useless extension candidates. Maximal degree in co-relation 40544. Up to 19395 conditions per place. [2024-11-28 03:01:07,401 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2024-11-28 03:01:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 436 flow [2024-11-28 03:01:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-28 03:01:07,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36650082918739635 [2024-11-28 03:01:07,407 INFO L175 Difference]: Start difference. First operand has 129 places, 137 transitions, 292 flow. Second operand 3 states and 221 transitions. [2024-11-28 03:01:07,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 436 flow [2024-11-28 03:01:07,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:01:07,413 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 261 flow [2024-11-28 03:01:07,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-11-28 03:01:07,414 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -67 predicate places. [2024-11-28 03:01:07,414 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 261 flow [2024-11-28 03:01:07,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:07,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:07,417 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:01:07,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:01:07,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:07,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1741488234, now seen corresponding path program 1 times [2024-11-28 03:01:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:07,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14055308] [2024-11-28 03:01:07,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:07,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14055308] [2024-11-28 03:01:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14055308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:07,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:01:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978596019] [2024-11-28 03:01:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:07,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:07,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:07,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:01:07,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-28 03:01:07,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:07,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:07,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-28 03:01:07,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:10,296 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-28 03:01:10,296 INFO L125 PetriNetUnfolderBase]: For 269/274 co-relation queries the response was YES. [2024-11-28 03:01:10,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20998 events. 13223/20998 cut-off events. For 269/274 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 137179 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40558. Up to 19397 conditions per place. [2024-11-28 03:01:10,398 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 91 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-28 03:01:10,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 463 flow [2024-11-28 03:01:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:01:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-28 03:01:10,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30845771144278605 [2024-11-28 03:01:10,401 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 261 flow. Second operand 4 states and 248 transitions. [2024-11-28 03:01:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 463 flow [2024-11-28 03:01:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:01:10,405 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 281 flow [2024-11-28 03:01:10,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=117, PETRI_TRANSITIONS=123} [2024-11-28 03:01:10,406 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -64 predicate places. [2024-11-28 03:01:10,406 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 281 flow [2024-11-28 03:01:10,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:10,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:10,407 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:01:10,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:01:10,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:10,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1741488253, now seen corresponding path program 1 times [2024-11-28 03:01:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:10,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944505308] [2024-11-28 03:01:10,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944505308] [2024-11-28 03:01:10,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944505308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:10,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:10,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:01:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273435579] [2024-11-28 03:01:10,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:10,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:10,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:10,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:10,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:01:10,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-28 03:01:10,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:10,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:10,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-28 03:01:10,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:12,581 INFO L124 PetriNetUnfolderBase]: 13222/20994 cut-off events. [2024-11-28 03:01:12,582 INFO L125 PetriNetUnfolderBase]: For 271/276 co-relation queries the response was YES. [2024-11-28 03:01:12,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20994 events. 13222/20994 cut-off events. For 271/276 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 137106 event pairs, 11340 based on Foata normal form. 1/16310 useless extension candidates. Maximal degree in co-relation 40556. Up to 19387 conditions per place. [2024-11-28 03:01:12,720 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 87 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-28 03:01:12,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 460 flow [2024-11-28 03:01:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:01:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-28 03:01:12,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3034825870646766 [2024-11-28 03:01:12,723 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 281 flow. Second operand 4 states and 244 transitions. [2024-11-28 03:01:12,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 460 flow [2024-11-28 03:01:12,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 454 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:01:12,728 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 282 flow [2024-11-28 03:01:12,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-11-28 03:01:12,729 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-28 03:01:12,729 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 282 flow [2024-11-28 03:01:12,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:12,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:12,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:12,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:01:12,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:12,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1766776114, now seen corresponding path program 1 times [2024-11-28 03:01:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864736089] [2024-11-28 03:01:12,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864736089] [2024-11-28 03:01:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864736089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:13,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949282971] [2024-11-28 03:01:13,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:13,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:13,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:13,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:01:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:13,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:01:13,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:13,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:13,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-28 03:01:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949282971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:13,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-28 03:01:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230424080] [2024-11-28 03:01:13,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:13,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:01:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:13,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:01:13,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:01:14,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:14,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:14,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:14,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:14,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:17,195 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-28 03:01:17,196 INFO L125 PetriNetUnfolderBase]: For 273/278 co-relation queries the response was YES. [2024-11-28 03:01:17,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40582 conditions, 20998 events. 13223/20998 cut-off events. For 273/278 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 137153 event pairs, 11340 based on Foata normal form. 1/16313 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-28 03:01:17,309 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 90 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2024-11-28 03:01:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 490 flow [2024-11-28 03:01:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:01:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:01:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-28 03:01:17,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2537313432835821 [2024-11-28 03:01:17,311 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 282 flow. Second operand 7 states and 357 transitions. [2024-11-28 03:01:17,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 490 flow [2024-11-28 03:01:17,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:01:17,315 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 293 flow [2024-11-28 03:01:17,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-11-28 03:01:17,317 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-28 03:01:17,317 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 293 flow [2024-11-28 03:01:17,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:17,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:17,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:17,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:17,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:01:17,523 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:17,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1766776133, now seen corresponding path program 1 times [2024-11-28 03:01:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513344502] [2024-11-28 03:01:17,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513344502] [2024-11-28 03:01:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513344502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152256153] [2024-11-28 03:01:17,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:17,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:17,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:17,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:01:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:17,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:01:17,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:17,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152256153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:17,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:01:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552840672] [2024-11-28 03:01:17,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:17,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:01:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:17,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:01:17,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:17,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:17,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:17,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:17,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:17,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:20,596 INFO L124 PetriNetUnfolderBase]: 13222/20996 cut-off events. [2024-11-28 03:01:20,596 INFO L125 PetriNetUnfolderBase]: For 279/284 co-relation queries the response was YES. [2024-11-28 03:01:20,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40585 conditions, 20996 events. 13222/20996 cut-off events. For 279/284 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 137150 event pairs, 11340 based on Foata normal form. 1/16312 useless extension candidates. Maximal degree in co-relation 40572. Up to 19387 conditions per place. [2024-11-28 03:01:20,844 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 88 selfloop transitions, 7 changer transitions 0/126 dead transitions. [2024-11-28 03:01:20,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 494 flow [2024-11-28 03:01:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:01:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:01:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-28 03:01:20,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.263681592039801 [2024-11-28 03:01:20,847 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 293 flow. Second operand 6 states and 318 transitions. [2024-11-28 03:01:20,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 494 flow [2024-11-28 03:01:20,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 483 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-28 03:01:20,851 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 303 flow [2024-11-28 03:01:20,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-11-28 03:01:20,852 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -57 predicate places. [2024-11-28 03:01:20,852 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 303 flow [2024-11-28 03:01:20,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:20,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:20,852 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:20,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:01:21,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a44bbb8-c8ac-4a9c-ac12-d3a7dfe4db92/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:01:21,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:21,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash -796234883, now seen corresponding path program 2 times [2024-11-28 03:01:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841942677] [2024-11-28 03:01:21,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:01:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:21,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:01:21,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:01:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841942677] [2024-11-28 03:01:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841942677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:21,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:21,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626317568] [2024-11-28 03:01:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:21,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:21,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:21,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:21,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-28 03:01:21,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:21,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:21,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-28 03:01:21,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:23,862 INFO L124 PetriNetUnfolderBase]: 13222/20995 cut-off events. [2024-11-28 03:01:23,862 INFO L125 PetriNetUnfolderBase]: For 280/285 co-relation queries the response was YES. [2024-11-28 03:01:23,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40583 conditions, 20995 events. 13222/20995 cut-off events. For 280/285 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 137141 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-28 03:01:23,976 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 86 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-11-28 03:01:23,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 477 flow [2024-11-28 03:01:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-28 03:01:23,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3383084577114428 [2024-11-28 03:01:23,978 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 303 flow. Second operand 3 states and 204 transitions. [2024-11-28 03:01:23,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 477 flow [2024-11-28 03:01:23,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:01:23,981 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 291 flow [2024-11-28 03:01:23,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-11-28 03:01:23,982 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -60 predicate places. [2024-11-28 03:01:23,982 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 291 flow [2024-11-28 03:01:23,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:23,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:23,983 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:23,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:01:23,983 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:23,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 471796798, now seen corresponding path program 1 times [2024-11-28 03:01:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877868582] [2024-11-28 03:01:23,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:01:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877868582] [2024-11-28 03:01:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877868582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191522819] [2024-11-28 03:01:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:24,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:24,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:24,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:24,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:24,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:24,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:24,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:24,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:26,053 INFO L124 PetriNetUnfolderBase]: 13222/20979 cut-off events. [2024-11-28 03:01:26,053 INFO L125 PetriNetUnfolderBase]: For 273/278 co-relation queries the response was YES. [2024-11-28 03:01:26,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40562 conditions, 20979 events. 13222/20979 cut-off events. For 273/278 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 136951 event pairs, 11340 based on Foata normal form. 2175/18486 useless extension candidates. Maximal degree in co-relation 40549. Up to 19397 conditions per place. [2024-11-28 03:01:26,149 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2024-11-28 03:01:26,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 463 flow [2024-11-28 03:01:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-28 03:01:26,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33001658374792703 [2024-11-28 03:01:26,151 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 291 flow. Second operand 3 states and 199 transitions. [2024-11-28 03:01:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 463 flow [2024-11-28 03:01:26,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:01:26,155 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 285 flow [2024-11-28 03:01:26,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-28 03:01:26,156 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-28 03:01:26,157 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 285 flow [2024-11-28 03:01:26,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:26,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:26,157 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:26,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:01:26,157 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:26,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 471796799, now seen corresponding path program 1 times [2024-11-28 03:01:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985112134] [2024-11-28 03:01:26,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:01:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985112134] [2024-11-28 03:01:26,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985112134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:26,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:01:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86988343] [2024-11-28 03:01:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:26,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:26,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:26,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:01:26,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:26,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:26,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:26,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:26,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:29,135 INFO L124 PetriNetUnfolderBase]: 11052/18318 cut-off events. [2024-11-28 03:01:29,135 INFO L125 PetriNetUnfolderBase]: For 344/446 co-relation queries the response was YES. [2024-11-28 03:01:29,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34868 conditions, 18318 events. 11052/18318 cut-off events. For 344/446 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 127779 event pairs, 5552 based on Foata normal form. 2053/16191 useless extension candidates. Maximal degree in co-relation 34855. Up to 12865 conditions per place. [2024-11-28 03:01:29,216 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 158 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2024-11-28 03:01:29,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 763 flow [2024-11-28 03:01:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:01:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-11-28 03:01:29,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38930348258706465 [2024-11-28 03:01:29,219 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 285 flow. Second operand 4 states and 313 transitions. [2024-11-28 03:01:29,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 763 flow [2024-11-28 03:01:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 193 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:01:29,222 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 312 flow [2024-11-28 03:01:29,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-28 03:01:29,223 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-28 03:01:29,223 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 312 flow [2024-11-28 03:01:29,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:29,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:29,224 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:29,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:01:29,224 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:29,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1561399076, now seen corresponding path program 1 times [2024-11-28 03:01:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380178555] [2024-11-28 03:01:29,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:01:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380178555] [2024-11-28 03:01:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380178555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:01:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189695337] [2024-11-28 03:01:29,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:29,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:01:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:29,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:01:29,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:01:29,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:29,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 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) [2024-11-28 03:01:29,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:29,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:29,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:31,553 INFO L124 PetriNetUnfolderBase]: 10786/19152 cut-off events. [2024-11-28 03:01:31,553 INFO L125 PetriNetUnfolderBase]: For 2761/2863 co-relation queries the response was YES. [2024-11-28 03:01:31,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38932 conditions, 19152 events. 10786/19152 cut-off events. For 2761/2863 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 153571 event pairs, 1209 based on Foata normal form. 192/16496 useless extension candidates. Maximal degree in co-relation 38917. Up to 10166 conditions per place. [2024-11-28 03:01:31,677 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 224 selfloop transitions, 7 changer transitions 1/262 dead transitions. [2024-11-28 03:01:31,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 262 transitions, 1062 flow [2024-11-28 03:01:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:01:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:01:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2024-11-28 03:01:31,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41691542288557215 [2024-11-28 03:01:31,681 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 312 flow. Second operand 5 states and 419 transitions. [2024-11-28 03:01:31,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 262 transitions, 1062 flow [2024-11-28 03:01:31,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 262 transitions, 1061 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:01:31,695 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 333 flow [2024-11-28 03:01:31,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-11-28 03:01:31,696 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -55 predicate places. [2024-11-28 03:01:31,697 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 333 flow [2024-11-28 03:01:31,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 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) [2024-11-28 03:01:31,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:31,697 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:31,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:01:31,698 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:31,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1076776104, now seen corresponding path program 1 times [2024-11-28 03:01:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302577877] [2024-11-28 03:01:31,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:31,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:01:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302577877] [2024-11-28 03:01:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302577877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:32,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:32,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:01:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624358367] [2024-11-28 03:01:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:32,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:01:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:32,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:01:32,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:01:32,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-28 03:01:32,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:32,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:32,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-28 03:01:32,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:34,131 INFO L124 PetriNetUnfolderBase]: 5996/11688 cut-off events. [2024-11-28 03:01:34,132 INFO L125 PetriNetUnfolderBase]: For 5923/5923 co-relation queries the response was YES. [2024-11-28 03:01:34,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24156 conditions, 11688 events. 5996/11688 cut-off events. For 5923/5923 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 94335 event pairs, 126 based on Foata normal form. 2178/12140 useless extension candidates. Maximal degree in co-relation 24139. Up to 6736 conditions per place. [2024-11-28 03:01:34,196 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 183 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2024-11-28 03:01:34,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 214 transitions, 859 flow [2024-11-28 03:01:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:01:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:01:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2024-11-28 03:01:34,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33913764510779437 [2024-11-28 03:01:34,199 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 333 flow. Second operand 6 states and 409 transitions. [2024-11-28 03:01:34,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 214 transitions, 859 flow [2024-11-28 03:01:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 214 transitions, 844 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-28 03:01:34,205 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 270 flow [2024-11-28 03:01:34,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-11-28 03:01:34,206 INFO L279 CegarLoopForPetriNet]: 181 programPoint places, -65 predicate places. [2024-11-28 03:01:34,206 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 270 flow [2024-11-28 03:01:34,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:34,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:34,206 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:34,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:01:34,206 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-28 03:01:34,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash 979680099, now seen corresponding path program 1 times [2024-11-28 03:01:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:34,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128081756] [2024-11-28 03:01:34,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:34,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:01:34,239 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:01:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:01:34,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:01:34,273 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:01:34,273 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (124 of 125 remaining) [2024-11-28 03:01:34,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 125 remaining) [2024-11-28 03:01:34,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 125 remaining) [2024-11-28 03:01:34,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 125 remaining) [2024-11-28 03:01:34,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 125 remaining) [2024-11-28 03:01:34,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (111 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (102 of 125 remaining) [2024-11-28 03:01:34,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 125 remaining) [2024-11-28 03:01:34,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 125 remaining) [2024-11-28 03:01:34,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 125 remaining) [2024-11-28 03:01:34,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 125 remaining) [2024-11-28 03:01:34,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 125 remaining) [2024-11-28 03:01:34,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 125 remaining) [2024-11-28 03:01:34,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 125 remaining) [2024-11-28 03:01:34,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 125 remaining) [2024-11-28 03:01:34,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 125 remaining) [2024-11-28 03:01:34,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 125 remaining) [2024-11-28 03:01:34,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 125 remaining) [2024-11-28 03:01:34,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 125 remaining) [2024-11-28 03:01:34,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:01:34,289 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:34,290 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:01:34,290 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:01:34,382 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:01:34,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 597 flow [2024-11-28 03:01:34,452 INFO L124 PetriNetUnfolderBase]: 42/366 cut-off events. [2024-11-28 03:01:34,452 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 03:01:34,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 366 events. 42/366 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2123 event pairs, 1 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 291. Up to 12 conditions per place. [2024-11-28 03:01:34,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 597 flow [2024-11-28 03:01:34,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 597 flow [2024-11-28 03:01:34,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:01:34,468 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;@579bf4d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:01:34,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2024-11-28 03:01:34,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:01:34,470 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 03:01:34,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:01:34,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:34,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:01:34,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2024-11-28 03:01:34,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash 34229, now seen corresponding path program 1 times [2024-11-28 03:01:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:34,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584641373] [2024-11-28 03:01:34,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584641373] [2024-11-28 03:01:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584641373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106324776] [2024-11-28 03:01:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:34,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:34,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:34,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:34,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 285 [2024-11-28 03:01:34,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 285 transitions, 597 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:01:34,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:34,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 285 [2024-11-28 03:01:34,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand