./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.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_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/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_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/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_8f686bd4-defb-4197-bc71-c28ff286212d/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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:46:54,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:46:54,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:46:54,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:46:54,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:46:54,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:46:54,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:46:54,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:46:54,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:46:54,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:46:54,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:46:54,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:46:54,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:46:54,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:46:54,472 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:46:54,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:46:54,473 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:46:54,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:46:54,475 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:54,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:54,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:54,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:46:54,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:46:54,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:46:54,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:46:54,477 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_8f686bd4-defb-4197-bc71-c28ff286212d/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 -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-28 04:46:54,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:46:54,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:46:54,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:46:54,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:46:54,848 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:46:54,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-28 04:46:58,028 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/data/6ffa335e6/3a748bfd9093455081d26c010c609394/FLAGabc0ca3ff [2024-11-28 04:46:58,488 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:46:58,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-28 04:46:58,512 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/data/6ffa335e6/3a748bfd9093455081d26c010c609394/FLAGabc0ca3ff [2024-11-28 04:46:58,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/data/6ffa335e6/3a748bfd9093455081d26c010c609394 [2024-11-28 04:46:58,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:46:58,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:46:58,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:58,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:46:58,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:46:58,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:58" (1/1) ... [2024-11-28 04:46:58,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4ea52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:58, skipping insertion in model container [2024-11-28 04:46:58,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:58" (1/1) ... [2024-11-28 04:46:58,604 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:46:59,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:59,118 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:46:59,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:59,257 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:46:59,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59 WrapperNode [2024-11-28 04:46:59,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:59,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:59,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:46:59,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:46:59,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,324 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2024-11-28 04:46:59,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:59,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:46:59,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:46:59,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:46:59,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,376 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 5, 6, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 2, 1]. [2024-11-28 04:46:59,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,392 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:46:59,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:46:59,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:46:59,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:46:59,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (1/1) ... [2024-11-28 04:46:59,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:59,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:59,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:46:59,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f686bd4-defb-4197-bc71-c28ff286212d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:46:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:46:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:46:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:46:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:46:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:46:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:46:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 04:46:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:46:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:46:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:46:59,505 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 04:46:59,686 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:46:59,688 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:47:00,142 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:47:00,142 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:47:00,706 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:47:00,707 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:47:00,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:00 BoogieIcfgContainer [2024-11-28 04:47:00,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:47:00,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:47:00,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:47:00,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:47:00,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:46:58" (1/3) ... [2024-11-28 04:47:00,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e76dd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:00, skipping insertion in model container [2024-11-28 04:47:00,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:59" (2/3) ... [2024-11-28 04:47:00,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e76dd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:00, skipping insertion in model container [2024-11-28 04:47:00,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:00" (3/3) ... [2024-11-28 04:47:00,724 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-28 04:47:00,738 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:47:00,740 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_12-ptr_racefree.i that has 2 procedures, 64 locations, 1 initial locations, 6 loop locations, and 16 error locations. [2024-11-28 04:47:00,742 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:47:00,820 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 04:47:00,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 75 transitions, 157 flow [2024-11-28 04:47:00,931 INFO L124 PetriNetUnfolderBase]: 15/109 cut-off events. [2024-11-28 04:47:00,934 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:47:00,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 15/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 458 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2024-11-28 04:47:00,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 75 transitions, 157 flow [2024-11-28 04:47:00,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 75 transitions, 157 flow [2024-11-28 04:47:00,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:00,966 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;@683d49cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:00,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-28 04:47:00,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:47:00,975 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:47:00,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:47:00,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:00,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:00,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 04:47:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 481539, now seen corresponding path program 1 times [2024-11-28 04:47:00,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:00,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895685244] [2024-11-28 04:47:00,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:01,385 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 04:47:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:01,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895685244] [2024-11-28 04:47:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895685244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:01,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:01,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941338396] [2024-11-28 04:47:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:01,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:01,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:01,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-28 04:47:01,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 04:47:01,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:01,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-28 04:47:01,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:01,722 INFO L124 PetriNetUnfolderBase]: 181/665 cut-off events. [2024-11-28 04:47:01,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:47:01,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 665 events. 181/665 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3853 event pairs, 156 based on Foata normal form. 105/703 useless extension candidates. Maximal degree in co-relation 1020. Up to 353 conditions per place. [2024-11-28 04:47:01,729 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 41 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-28 04:47:01,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 241 flow [2024-11-28 04:47:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-28 04:47:01,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6844444444444444 [2024-11-28 04:47:01,747 INFO L175 Difference]: Start difference. First operand has 67 places, 75 transitions, 157 flow. Second operand 3 states and 154 transitions. [2024-11-28 04:47:01,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 241 flow [2024-11-28 04:47:01,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 241 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:47:01,760 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 135 flow [2024-11-28 04:47:01,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-11-28 04:47:01,770 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-11-28 04:47:01,771 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 135 flow [2024-11-28 04:47:01,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 04:47:01,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:01,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:01,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:47:01,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 04:47:01,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 481540, now seen corresponding path program 1 times [2024-11-28 04:47:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:01,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269586058] [2024-11-28 04:47:01,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:02,128 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 04:47:02,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269586058] [2024-11-28 04:47:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269586058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:02,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905157698] [2024-11-28 04:47:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:02,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:02,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:02,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:02,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:02,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-28 04:47:02,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 04:47:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:02,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-28 04:47:02,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:02,392 INFO L124 PetriNetUnfolderBase]: 168/586 cut-off events. [2024-11-28 04:47:02,392 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:47:02,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 586 events. 168/586 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3411 event pairs, 0 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 936. Up to 355 conditions per place. [2024-11-28 04:47:02,398 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 41 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-28 04:47:02,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 247 flow [2024-11-28 04:47:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-28 04:47:02,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2024-11-28 04:47:02,400 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 135 flow. Second operand 3 states and 147 transitions. [2024-11-28 04:47:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 247 flow [2024-11-28 04:47:02,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:02,404 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 141 flow [2024-11-28 04:47:02,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-11-28 04:47:02,405 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2024-11-28 04:47:02,406 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 141 flow [2024-11-28 04:47:02,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 04:47:02,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:02,407 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:47:02,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:47:02,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 04:47:02,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1950145640, now seen corresponding path program 1 times [2024-11-28 04:47:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028663661] [2024-11-28 04:47:02,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:02,730 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 04:47:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028663661] [2024-11-28 04:47:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028663661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:02,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:02,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444336629] [2024-11-28 04:47:02,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:02,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:47:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:02,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:47:02,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:47:02,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-28 04:47:02,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 04:47:02,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:02,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-28 04:47:02,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:02,962 INFO L124 PetriNetUnfolderBase]: 36/121 cut-off events. [2024-11-28 04:47:02,962 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 04:47:02,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 121 events. 36/121 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 341 event pairs, 0 based on Foata normal form. 26/139 useless extension candidates. Maximal degree in co-relation 217. Up to 75 conditions per place. [2024-11-28 04:47:02,963 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 29 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-28 04:47:02,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 170 flow [2024-11-28 04:47:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:47:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-11-28 04:47:02,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-28 04:47:02,967 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 141 flow. Second operand 4 states and 165 transitions. [2024-11-28 04:47:02,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 170 flow [2024-11-28 04:47:02,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:47:02,970 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 78 flow [2024-11-28 04:47:02,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-11-28 04:47:02,972 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, -26 predicate places. [2024-11-28 04:47:02,972 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 78 flow [2024-11-28 04:47:02,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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 04:47:02,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:02,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 04:47:02,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:47:02,973 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-28 04:47:02,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -324972236, now seen corresponding path program 1 times [2024-11-28 04:47:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763173269] [2024-11-28 04:47:02,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:47:03,028 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:47:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:47:03,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:47:03,088 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:47:03,089 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-28 04:47:03,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2024-11-28 04:47:03,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2024-11-28 04:47:03,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2024-11-28 04:47:03,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2024-11-28 04:47:03,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2024-11-28 04:47:03,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2024-11-28 04:47:03,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2024-11-28 04:47:03,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2024-11-28 04:47:03,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2024-11-28 04:47:03,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:47:03,097 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:47:03,101 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:47:03,101 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:47:03,148 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:47:03,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 112 transitions, 240 flow [2024-11-28 04:47:03,180 INFO L124 PetriNetUnfolderBase]: 27/192 cut-off events. [2024-11-28 04:47:03,181 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 04:47:03,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 27/192 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 940 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 115. Up to 6 conditions per place. [2024-11-28 04:47:03,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 112 transitions, 240 flow [2024-11-28 04:47:03,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 112 transitions, 240 flow [2024-11-28 04:47:03,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:03,190 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;@683d49cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:03,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-28 04:47:03,195 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:47:03,195 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:47:03,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:47:03,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:03,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:03,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:03,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash 592755, now seen corresponding path program 1 times [2024-11-28 04:47:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115743761] [2024-11-28 04:47:03,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:03,299 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 04:47:03,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:03,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115743761] [2024-11-28 04:47:03,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115743761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:03,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:03,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428901156] [2024-11-28 04:47:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:03,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:03,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:03,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:03,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 112 [2024-11-28 04:47:03,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 112 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 04:47:03,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 112 [2024-11-28 04:47:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:05,062 INFO L124 PetriNetUnfolderBase]: 5103/11295 cut-off events. [2024-11-28 04:47:05,062 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-28 04:47:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19477 conditions, 11295 events. 5103/11295 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 98156 event pairs, 4416 based on Foata normal form. 2239/12636 useless extension candidates. Maximal degree in co-relation 12477. Up to 7045 conditions per place. [2024-11-28 04:47:05,151 INFO L140 encePairwiseOnDemand]: 92/112 looper letters, 67 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-28 04:47:05,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 388 flow [2024-11-28 04:47:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-28 04:47:05,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2024-11-28 04:47:05,156 INFO L175 Difference]: Start difference. First operand has 99 places, 112 transitions, 240 flow. Second operand 3 states and 243 transitions. [2024-11-28 04:47:05,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 388 flow [2024-11-28 04:47:05,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 117 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:47:05,165 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 206 flow [2024-11-28 04:47:05,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-11-28 04:47:05,168 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, -1 predicate places. [2024-11-28 04:47:05,168 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 206 flow [2024-11-28 04:47:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 04:47:05,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:05,168 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:05,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:47:05,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:05,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash 592756, now seen corresponding path program 1 times [2024-11-28 04:47:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059435411] [2024-11-28 04:47:05,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:05,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:05,338 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 04:47:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059435411] [2024-11-28 04:47:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059435411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019569276] [2024-11-28 04:47:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:05,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:05,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:05,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:05,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 112 [2024-11-28 04:47:05,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 04:47:05,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:05,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 112 [2024-11-28 04:47:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:06,767 INFO L124 PetriNetUnfolderBase]: 4766/11141 cut-off events. [2024-11-28 04:47:06,767 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-28 04:47:06,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18979 conditions, 11141 events. 4766/11141 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 101349 event pairs, 2232 based on Foata normal form. 1/10124 useless extension candidates. Maximal degree in co-relation 16425. Up to 7553 conditions per place. [2024-11-28 04:47:06,838 INFO L140 encePairwiseOnDemand]: 108/112 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-28 04:47:06,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 350 flow [2024-11-28 04:47:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-28 04:47:06,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-28 04:47:06,840 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 206 flow. Second operand 3 states and 213 transitions. [2024-11-28 04:47:06,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 350 flow [2024-11-28 04:47:06,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:06,863 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 216 flow [2024-11-28 04:47:06,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-11-28 04:47:06,864 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2024-11-28 04:47:06,864 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 216 flow [2024-11-28 04:47:06,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 04:47:06,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:06,865 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:47:06,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:47:06,865 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:06,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1980408581, now seen corresponding path program 1 times [2024-11-28 04:47:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980009829] [2024-11-28 04:47:06,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:07,065 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 04:47:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980009829] [2024-11-28 04:47:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980009829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:07,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:07,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:47:07,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905732809] [2024-11-28 04:47:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:07,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:07,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:07,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:07,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:07,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 112 [2024-11-28 04:47:07,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 04:47:07,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:07,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 112 [2024-11-28 04:47:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:08,485 INFO L124 PetriNetUnfolderBase]: 4754/10554 cut-off events. [2024-11-28 04:47:08,486 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-28 04:47:08,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18718 conditions, 10554 events. 4754/10554 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 94362 event pairs, 0 based on Foata normal form. 13/10025 useless extension candidates. Maximal degree in co-relation 1445. Up to 7153 conditions per place. [2024-11-28 04:47:08,548 INFO L140 encePairwiseOnDemand]: 108/112 looper letters, 80 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-28 04:47:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 464 flow [2024-11-28 04:47:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:47:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-11-28 04:47:08,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6450892857142857 [2024-11-28 04:47:08,551 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 216 flow. Second operand 4 states and 289 transitions. [2024-11-28 04:47:08,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 464 flow [2024-11-28 04:47:08,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:47:08,558 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 233 flow [2024-11-28 04:47:08,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-11-28 04:47:08,559 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-11-28 04:47:08,559 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 233 flow [2024-11-28 04:47:08,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 04:47:08,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:08,559 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 04:47:08,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:47:08,560 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:08,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1533312629, now seen corresponding path program 1 times [2024-11-28 04:47:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160506597] [2024-11-28 04:47:08,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:08,868 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 04:47:08,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160506597] [2024-11-28 04:47:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160506597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:08,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:47:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754763511] [2024-11-28 04:47:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:08,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:47:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:08,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:47:08,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:47:08,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 112 [2024-11-28 04:47:08,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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 04:47:08,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:08,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 112 [2024-11-28 04:47:08,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:10,343 INFO L124 PetriNetUnfolderBase]: 4766/10615 cut-off events. [2024-11-28 04:47:10,343 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-11-28 04:47:10,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19171 conditions, 10615 events. 4766/10615 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 93212 event pairs, 1340 based on Foata normal form. 169/10090 useless extension candidates. Maximal degree in co-relation 1391. Up to 5710 conditions per place. [2024-11-28 04:47:10,400 INFO L140 encePairwiseOnDemand]: 107/112 looper letters, 128 selfloop transitions, 6 changer transitions 0/182 dead transitions. [2024-11-28 04:47:10,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 671 flow [2024-11-28 04:47:10,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:47:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:47:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2024-11-28 04:47:10,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6473214285714286 [2024-11-28 04:47:10,403 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 233 flow. Second operand 6 states and 435 transitions. [2024-11-28 04:47:10,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 671 flow [2024-11-28 04:47:10,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 182 transitions, 662 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:10,408 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 237 flow [2024-11-28 04:47:10,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-28 04:47:10,409 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 6 predicate places. [2024-11-28 04:47:10,409 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 237 flow [2024-11-28 04:47:10,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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 04:47:10,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:10,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:10,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:47:10,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:10,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1503937645, now seen corresponding path program 1 times [2024-11-28 04:47:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869438952] [2024-11-28 04:47:10,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:10,619 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 04:47:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869438952] [2024-11-28 04:47:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869438952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558006471] [2024-11-28 04:47:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:10,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:47:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:10,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:47:10,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:47:10,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 112 [2024-11-28 04:47:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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 04:47:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 112 [2024-11-28 04:47:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:11,934 INFO L124 PetriNetUnfolderBase]: 5568/12214 cut-off events. [2024-11-28 04:47:11,934 INFO L125 PetriNetUnfolderBase]: For 2401/2401 co-relation queries the response was YES. [2024-11-28 04:47:11,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 12214 events. 5568/12214 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 107692 event pairs, 212 based on Foata normal form. 0/11989 useless extension candidates. Maximal degree in co-relation 21298. Up to 6679 conditions per place. [2024-11-28 04:47:11,990 INFO L140 encePairwiseOnDemand]: 100/112 looper letters, 121 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2024-11-28 04:47:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 682 flow [2024-11-28 04:47:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:47:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:47:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2024-11-28 04:47:11,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-28 04:47:11,992 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 237 flow. Second operand 5 states and 357 transitions. [2024-11-28 04:47:11,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 682 flow [2024-11-28 04:47:11,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 171 transitions, 651 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 04:47:11,997 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 286 flow [2024-11-28 04:47:11,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-11-28 04:47:11,998 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 8 predicate places. [2024-11-28 04:47:11,998 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 286 flow [2024-11-28 04:47:11,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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 04:47:11,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:11,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:11,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:47:11,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:11,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1503937644, now seen corresponding path program 1 times [2024-11-28 04:47:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729348944] [2024-11-28 04:47:11,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:12,225 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 04:47:12,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:12,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729348944] [2024-11-28 04:47:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729348944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:12,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623912649] [2024-11-28 04:47:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:12,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:47:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:12,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:47:12,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:47:12,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 112 [2024-11-28 04:47:12,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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 04:47:12,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:12,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 112 [2024-11-28 04:47:12,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:13,331 INFO L124 PetriNetUnfolderBase]: 4756/10420 cut-off events. [2024-11-28 04:47:13,331 INFO L125 PetriNetUnfolderBase]: For 2548/2548 co-relation queries the response was YES. [2024-11-28 04:47:13,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20671 conditions, 10420 events. 4756/10420 cut-off events. For 2548/2548 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 88399 event pairs, 2757 based on Foata normal form. 857/10604 useless extension candidates. Maximal degree in co-relation 19414. Up to 5693 conditions per place. [2024-11-28 04:47:13,372 INFO L140 encePairwiseOnDemand]: 104/112 looper letters, 111 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2024-11-28 04:47:13,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 663 flow [2024-11-28 04:47:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:47:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:47:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-11-28 04:47:13,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-28 04:47:13,375 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 286 flow. Second operand 6 states and 399 transitions. [2024-11-28 04:47:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 663 flow [2024-11-28 04:47:13,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 159 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:47:13,382 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 286 flow [2024-11-28 04:47:13,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-11-28 04:47:13,383 INFO L279 CegarLoopForPetriNet]: 99 programPoint places, 8 predicate places. [2024-11-28 04:47:13,383 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 286 flow [2024-11-28 04:47:13,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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 04:47:13,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:13,384 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 04:47:13,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:47:13,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-28 04:47:13,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash 288051850, now seen corresponding path program 1 times [2024-11-28 04:47:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380018933] [2024-11-28 04:47:13,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:47:13,431 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:47:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:47:13,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:47:13,467 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:47:13,467 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-11-28 04:47:13,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (25 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (24 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 33 remaining) [2024-11-28 04:47:13,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 33 remaining) [2024-11-28 04:47:13,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 33 remaining) [2024-11-28 04:47:13,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:47:13,470 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:13,471 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:47:13,471 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:47:13,506 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:47:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 149 transitions, 325 flow [2024-11-28 04:47:13,543 INFO L124 PetriNetUnfolderBase]: 42/296 cut-off events. [2024-11-28 04:47:13,543 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 04:47:13,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 296 events. 42/296 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1545 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2024-11-28 04:47:13,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 149 transitions, 325 flow [2024-11-28 04:47:13,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 149 transitions, 325 flow [2024-11-28 04:47:13,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:13,551 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;@683d49cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:13,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-28 04:47:13,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:47:13,556 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:47:13,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:47:13,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:13,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:13,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-28 04:47:13,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 740712, now seen corresponding path program 1 times [2024-11-28 04:47:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488782214] [2024-11-28 04:47:13,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:13,615 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 04:47:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488782214] [2024-11-28 04:47:13,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488782214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:13,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:13,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553970543] [2024-11-28 04:47:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:13,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:13,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:13,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:13,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 149 [2024-11-28 04:47:13,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:13,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:13,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 149 [2024-11-28 04:47:13,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:28,863 INFO L124 PetriNetUnfolderBase]: 104120/184734 cut-off events. [2024-11-28 04:47:28,864 INFO L125 PetriNetUnfolderBase]: For 1847/1847 co-relation queries the response was YES. [2024-11-28 04:47:29,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330246 conditions, 184734 events. 104120/184734 cut-off events. For 1847/1847 co-relation queries the response was YES. Maximal size of possible extension queue 3800. Compared 1929572 event pairs, 89797 based on Foata normal form. 41166/213785 useless extension candidates. Maximal degree in co-relation 145878. Up to 124602 conditions per place. [2024-11-28 04:47:29,768 INFO L140 encePairwiseOnDemand]: 123/149 looper letters, 93 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2024-11-28 04:47:29,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 160 transitions, 537 flow [2024-11-28 04:47:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2024-11-28 04:47:29,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7427293064876958 [2024-11-28 04:47:29,770 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 325 flow. Second operand 3 states and 332 transitions. [2024-11-28 04:47:29,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 160 transitions, 537 flow [2024-11-28 04:47:29,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 160 transitions, 537 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:47:29,775 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 279 flow [2024-11-28 04:47:29,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2024-11-28 04:47:29,776 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, -1 predicate places. [2024-11-28 04:47:29,776 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 279 flow [2024-11-28 04:47:29,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:29,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:29,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:47:29,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-28 04:47:29,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:29,777 INFO L85 PathProgramCache]: Analyzing trace with hash 740713, now seen corresponding path program 1 times [2024-11-28 04:47:29,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:29,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412062237] [2024-11-28 04:47:29,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:29,895 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 04:47:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:29,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412062237] [2024-11-28 04:47:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412062237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:29,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:29,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:47:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525806380] [2024-11-28 04:47:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:29,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:29,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:29,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:29,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 149 [2024-11-28 04:47:29,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 04:47:29,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:29,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 149 [2024-11-28 04:47:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:43,937 INFO L124 PetriNetUnfolderBase]: 97063/178093 cut-off events. [2024-11-28 04:47:43,937 INFO L125 PetriNetUnfolderBase]: For 3845/3845 co-relation queries the response was YES. [2024-11-28 04:47:44,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316541 conditions, 178093 events. 97063/178093 cut-off events. For 3845/3845 co-relation queries the response was YES. Maximal size of possible extension queue 3815. Compared 1917402 event pairs, 63133 based on Foata normal form. 1/164955 useless extension candidates. Maximal degree in co-relation 270154. Up to 134378 conditions per place. [2024-11-28 04:47:44,858 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 70 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-28 04:47:44,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 138 transitions, 451 flow [2024-11-28 04:47:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-28 04:47:44,860 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6219239373601789 [2024-11-28 04:47:44,860 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 279 flow. Second operand 3 states and 278 transitions. [2024-11-28 04:47:44,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 138 transitions, 451 flow [2024-11-28 04:47:45,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:45,649 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 289 flow [2024-11-28 04:47:45,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2024-11-28 04:47:45,649 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 0 predicate places. [2024-11-28 04:47:45,649 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 289 flow [2024-11-28 04:47:45,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 04:47:45,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:45,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:47:45,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:47:45,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-28 04:47:45,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1188481207, now seen corresponding path program 1 times [2024-11-28 04:47:45,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123003612] [2024-11-28 04:47:45,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:45,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:45,797 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 04:47:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123003612] [2024-11-28 04:47:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123003612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:45,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:47:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872590918] [2024-11-28 04:47:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:45,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:45,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:45,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:45,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 149 [2024-11-28 04:47:45,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 04:47:45,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:45,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 149 [2024-11-28 04:47:45,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand