./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/reorder_2.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_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/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_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/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_1f074ce6-f317-4ef4-a5de-c6692612d756/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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:05:52,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:05:52,522 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:05:52,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:05:52,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:05:52,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:05:52,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:05:52,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:05:52,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:05:52,563 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:05:52,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:05:52,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:05:52,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:05:52,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:05:52,564 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:05:52,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:05:52,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:05:52,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:05:52,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:05:52,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:05:52,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:05:52,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:05:52,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:05:52,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:05:52,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:05:52,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:05:52,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:52,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:05:52,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:52,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:05:52,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:05:52,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:05:52,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:05:52,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:05:52,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:05:52,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:05:52,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:05:52,570 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_1f074ce6-f317-4ef4-a5de-c6692612d756/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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-11-28 03:05:52,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:05:52,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:05:52,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:05:52,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:05:52,986 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:05:52,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/reorder_2.i [2024-11-28 03:05:56,673 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/data/fa76b4494/a7b81b054ade473d951f0a7ee47be365/FLAG227b048f0 [2024-11-28 03:05:57,140 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:05:57,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/sv-benchmarks/c/pthread/reorder_2.i [2024-11-28 03:05:57,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/data/fa76b4494/a7b81b054ade473d951f0a7ee47be365/FLAG227b048f0 [2024-11-28 03:05:57,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/data/fa76b4494/a7b81b054ade473d951f0a7ee47be365 [2024-11-28 03:05:57,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:05:57,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:05:57,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:05:57,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:05:57,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:05:57,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:57" (1/1) ... [2024-11-28 03:05:57,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b321cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:57, skipping insertion in model container [2024-11-28 03:05:57,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:57" (1/1) ... [2024-11-28 03:05:57,310 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:05:58,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:05:58,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:05:58,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:05:58,385 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:05:58,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58 WrapperNode [2024-11-28 03:05:58,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:05:58,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:05:58,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:05:58,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:05:58,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,481 INFO L138 Inliner]: procedures = 372, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 135 [2024-11-28 03:05:58,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:05:58,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:05:58,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:05:58,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:05:58,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,537 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-28 03:05:58,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:05:58,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:05:58,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:05:58,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:05:58,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (1/1) ... [2024-11-28 03:05:58,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:58,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:58,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:05:58,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f074ce6-f317-4ef4-a5de-c6692612d756/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:05:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:05:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:05:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-28 03:05:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-28 03:05:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:05:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:05:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:05:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:05:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-28 03:05:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-28 03:05:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:05:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:05:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:05:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:05:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:05:58,672 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:05:58,918 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:05:58,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:05:59,385 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:05:59,385 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:05:59,618 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:05:59,619 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:05:59,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:59 BoogieIcfgContainer [2024-11-28 03:05:59,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:05:59,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:05:59,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:05:59,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:05:59,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:05:57" (1/3) ... [2024-11-28 03:05:59,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcb366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:59, skipping insertion in model container [2024-11-28 03:05:59,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:58" (2/3) ... [2024-11-28 03:05:59,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcb366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:59, skipping insertion in model container [2024-11-28 03:05:59,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:59" (3/3) ... [2024-11-28 03:05:59,632 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-11-28 03:05:59,651 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:05:59,653 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 50 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2024-11-28 03:05:59,654 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:05:59,722 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 03:05:59,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 59 transitions, 138 flow [2024-11-28 03:05:59,880 INFO L124 PetriNetUnfolderBase]: 14/137 cut-off events. [2024-11-28 03:05:59,886 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 03:05:59,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 14/137 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2024-11-28 03:05:59,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 59 transitions, 138 flow [2024-11-28 03:05:59,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 59 transitions, 138 flow [2024-11-28 03:05:59,914 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:05:59,942 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;@7f2510ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:05:59,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 03:05:59,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:05:59,948 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-28 03:05:59,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:05:59,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:05:59,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:05:59,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:05:59,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash 11929213, now seen corresponding path program 1 times [2024-11-28 03:05:59,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:59,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395518963] [2024-11-28 03:05:59,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395518963] [2024-11-28 03:06:00,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395518963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:00,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:00,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:06:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562337193] [2024-11-28 03:06:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:00,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:06:00,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:00,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:06:00,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:06:00,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-11-28 03:06:00,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:00,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:00,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-11-28 03:06:00,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:00,416 INFO L124 PetriNetUnfolderBase]: 86/377 cut-off events. [2024-11-28 03:06:00,417 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-28 03:06:00,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 377 events. 86/377 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2572 event pairs, 71 based on Foata normal form. 44/295 useless extension candidates. Maximal degree in co-relation 375. Up to 190 conditions per place. [2024-11-28 03:06:00,422 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 24 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-28 03:06:00,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 174 flow [2024-11-28 03:06:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:06:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:06:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-11-28 03:06:00,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7372881355932204 [2024-11-28 03:06:00,441 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 138 flow. Second operand 2 states and 87 transitions. [2024-11-28 03:06:00,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 174 flow [2024-11-28 03:06:00,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:00,451 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 126 flow [2024-11-28 03:06:00,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-28 03:06:00,459 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-28 03:06:00,459 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 126 flow [2024-11-28 03:06:00,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:00,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:00,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:00,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:06:00,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:00,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 369803816, now seen corresponding path program 1 times [2024-11-28 03:06:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969517436] [2024-11-28 03:06:00,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969517436] [2024-11-28 03:06:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969517436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:00,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734321107] [2024-11-28 03:06:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:00,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:00,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:00,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:06:00,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-28 03:06:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:00,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:00,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-28 03:06:00,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:00,946 INFO L124 PetriNetUnfolderBase]: 97/370 cut-off events. [2024-11-28 03:06:00,946 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-28 03:06:00,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 370 events. 97/370 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2462 event pairs, 65 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 607. Up to 168 conditions per place. [2024-11-28 03:06:00,951 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 27 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-11-28 03:06:00,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 186 flow [2024-11-28 03:06:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:06:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-28 03:06:00,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2024-11-28 03:06:00,954 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 126 flow. Second operand 3 states and 106 transitions. [2024-11-28 03:06:00,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 186 flow [2024-11-28 03:06:00,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:00,959 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 126 flow [2024-11-28 03:06:00,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-28 03:06:00,960 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-28 03:06:00,961 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 126 flow [2024-11-28 03:06:00,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:00,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:00,961 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:00,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:06:00,962 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:00,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 369803817, now seen corresponding path program 1 times [2024-11-28 03:06:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320927784] [2024-11-28 03:06:00,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:01,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320927784] [2024-11-28 03:06:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320927784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:06:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480817257] [2024-11-28 03:06:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:01,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:01,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:01,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:01,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2024-11-28 03:06:01,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:01,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2024-11-28 03:06:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:01,958 INFO L124 PetriNetUnfolderBase]: 184/699 cut-off events. [2024-11-28 03:06:01,959 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-28 03:06:01,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 699 events. 184/699 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5578 event pairs, 124 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 1174. Up to 215 conditions per place. [2024-11-28 03:06:01,970 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 47 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-28 03:06:01,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 300 flow [2024-11-28 03:06:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:06:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-28 03:06:01,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6822033898305084 [2024-11-28 03:06:01,976 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 126 flow. Second operand 4 states and 161 transitions. [2024-11-28 03:06:01,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 300 flow [2024-11-28 03:06:01,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:01,984 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 148 flow [2024-11-28 03:06:01,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-28 03:06:01,985 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-11-28 03:06:01,985 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 148 flow [2024-11-28 03:06:01,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:01,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:01,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:01,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:06:01,986 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:01,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash 298993029, now seen corresponding path program 1 times [2024-11-28 03:06:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:01,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910193144] [2024-11-28 03:06:01,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:02,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910193144] [2024-11-28 03:06:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910193144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:02,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:02,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:06:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190220638] [2024-11-28 03:06:02,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:02,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:02,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:06:02,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-28 03:06:02,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:02,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:02,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-28 03:06:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:02,715 INFO L124 PetriNetUnfolderBase]: 226/748 cut-off events. [2024-11-28 03:06:02,716 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-28 03:06:02,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 748 events. 226/748 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6082 event pairs, 182 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 1317. Up to 488 conditions per place. [2024-11-28 03:06:02,723 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 36 selfloop transitions, 7 changer transitions 2/67 dead transitions. [2024-11-28 03:06:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 271 flow [2024-11-28 03:06:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:06:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-28 03:06:02,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.597457627118644 [2024-11-28 03:06:02,725 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 148 flow. Second operand 4 states and 141 transitions. [2024-11-28 03:06:02,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 271 flow [2024-11-28 03:06:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:02,731 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 186 flow [2024-11-28 03:06:02,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-28 03:06:02,733 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-11-28 03:06:02,733 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 186 flow [2024-11-28 03:06:02,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:02,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:02,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:02,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:06:02,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:02,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash 678851392, now seen corresponding path program 1 times [2024-11-28 03:06:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:02,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975517053] [2024-11-28 03:06:02,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975517053] [2024-11-28 03:06:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975517053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:02,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:02,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:02,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498010525] [2024-11-28 03:06:02,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:02,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:02,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:02,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:02,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:06:02,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-28 03:06:02,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:02,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:02,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-28 03:06:02,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:03,000 INFO L124 PetriNetUnfolderBase]: 200/675 cut-off events. [2024-11-28 03:06:03,000 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-28 03:06:03,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 675 events. 200/675 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5290 event pairs, 136 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 1292. Up to 349 conditions per place. [2024-11-28 03:06:03,006 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 30 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-28 03:06:03,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 256 flow [2024-11-28 03:06:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:06:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-28 03:06:03,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2024-11-28 03:06:03,010 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 186 flow. Second operand 3 states and 106 transitions. [2024-11-28 03:06:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 256 flow [2024-11-28 03:06:03,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:03,016 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 179 flow [2024-11-28 03:06:03,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-28 03:06:03,017 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-28 03:06:03,017 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 179 flow [2024-11-28 03:06:03,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:03,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:03,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:03,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:06:03,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:03,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:03,019 INFO L85 PathProgramCache]: Analyzing trace with hash 678851393, now seen corresponding path program 1 times [2024-11-28 03:06:03,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:03,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572450685] [2024-11-28 03:06:03,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:03,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:03,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572450685] [2024-11-28 03:06:03,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572450685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:03,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:03,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:03,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969111061] [2024-11-28 03:06:03,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:03,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:03,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:03,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:03,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:03,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-28 03:06:03,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:03,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:03,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-28 03:06:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:03,586 INFO L124 PetriNetUnfolderBase]: 271/784 cut-off events. [2024-11-28 03:06:03,586 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-28 03:06:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 784 events. 271/784 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6088 event pairs, 54 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 1602. Up to 238 conditions per place. [2024-11-28 03:06:03,592 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 41 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-11-28 03:06:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 357 flow [2024-11-28 03:06:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-28 03:06:03,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-28 03:06:03,594 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 179 flow. Second operand 5 states and 175 transitions. [2024-11-28 03:06:03,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 357 flow [2024-11-28 03:06:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:03,602 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 268 flow [2024-11-28 03:06:03,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-28 03:06:03,602 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-11-28 03:06:03,602 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 268 flow [2024-11-28 03:06:03,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:03,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:03,603 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:03,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:06:03,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:03,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1312972074, now seen corresponding path program 1 times [2024-11-28 03:06:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251992557] [2024-11-28 03:06:03,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251992557] [2024-11-28 03:06:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251992557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665914040] [2024-11-28 03:06:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:04,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:04,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:04,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:04,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2024-11-28 03:06:04,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:04,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:04,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2024-11-28 03:06:04,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:04,287 INFO L124 PetriNetUnfolderBase]: 111/414 cut-off events. [2024-11-28 03:06:04,287 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-28 03:06:04,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 414 events. 111/414 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2683 event pairs, 94 based on Foata normal form. 4/386 useless extension candidates. Maximal degree in co-relation 978. Up to 247 conditions per place. [2024-11-28 03:06:04,290 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 39 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-28 03:06:04,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 372 flow [2024-11-28 03:06:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-28 03:06:04,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-28 03:06:04,292 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 268 flow. Second operand 5 states and 170 transitions. [2024-11-28 03:06:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 372 flow [2024-11-28 03:06:04,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:04,297 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 276 flow [2024-11-28 03:06:04,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-28 03:06:04,298 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-11-28 03:06:04,298 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 276 flow [2024-11-28 03:06:04,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:04,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:04,298 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:04,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:06:04,298 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-28 03:06:04,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2047428286, now seen corresponding path program 1 times [2024-11-28 03:06:04,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:04,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445299186] [2024-11-28 03:06:04,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:06:04,327 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:06:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:06:04,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:06:04,361 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:06:04,362 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-28 03:06:04,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-28 03:06:04,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2024-11-28 03:06:04,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (11 of 15 remaining) [2024-11-28 03:06:04,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2024-11-28 03:06:04,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-28 03:06:04,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:06:04,366 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:04,370 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:06:04,370 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:06:04,397 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 03:06:04,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 80 transitions, 204 flow [2024-11-28 03:06:04,446 INFO L124 PetriNetUnfolderBase]: 71/450 cut-off events. [2024-11-28 03:06:04,446 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2024-11-28 03:06:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 450 events. 71/450 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2758 event pairs, 1 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 276. Up to 32 conditions per place. [2024-11-28 03:06:04,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 80 transitions, 204 flow [2024-11-28 03:06:04,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 80 transitions, 204 flow [2024-11-28 03:06:04,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:06:04,456 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;@7f2510ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:06:04,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-28 03:06:04,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:06:04,460 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-28 03:06:04,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:06:04,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:04,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:06:04,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:04,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash 14330365, now seen corresponding path program 1 times [2024-11-28 03:06:04,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:04,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667850178] [2024-11-28 03:06:04,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:04,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667850178] [2024-11-28 03:06:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667850178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:04,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:04,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:06:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410568783] [2024-11-28 03:06:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:04,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:06:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:04,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:06:04,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:06:04,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2024-11-28 03:06:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 204 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2024-11-28 03:06:04,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:05,139 INFO L124 PetriNetUnfolderBase]: 1996/4913 cut-off events. [2024-11-28 03:06:05,139 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-11-28 03:06:05,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 4913 events. 1996/4913 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 46821 event pairs, 1718 based on Foata normal form. 1035/4803 useless extension candidates. Maximal degree in co-relation 3153. Up to 3077 conditions per place. [2024-11-28 03:06:05,186 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 33 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2024-11-28 03:06:05,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 252 flow [2024-11-28 03:06:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:06:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:06:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 116 transitions. [2024-11-28 03:06:05,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-28 03:06:05,187 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 204 flow. Second operand 2 states and 116 transitions. [2024-11-28 03:06:05,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 252 flow [2024-11-28 03:06:05,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:05,194 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 186 flow [2024-11-28 03:06:05,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-11-28 03:06:05,195 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2024-11-28 03:06:05,195 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 186 flow [2024-11-28 03:06:05,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:05,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:05,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:05,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:06:05,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:05,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash 444239606, now seen corresponding path program 1 times [2024-11-28 03:06:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835060685] [2024-11-28 03:06:05,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:05,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835060685] [2024-11-28 03:06:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835060685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755841343] [2024-11-28 03:06:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:05,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:05,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:05,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:06:05,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-28 03:06:05,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:05,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:05,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-28 03:06:05,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:06,035 INFO L124 PetriNetUnfolderBase]: 2241/4944 cut-off events. [2024-11-28 03:06:06,035 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-11-28 03:06:06,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 4944 events. 2241/4944 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 44487 event pairs, 1564 based on Foata normal form. 0/4098 useless extension candidates. Maximal degree in co-relation 8837. Up to 2701 conditions per place. [2024-11-28 03:06:06,092 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 39 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-28 03:06:06,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 276 flow [2024-11-28 03:06:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:06:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-28 03:06:06,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 03:06:06,094 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 186 flow. Second operand 3 states and 145 transitions. [2024-11-28 03:06:06,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 276 flow [2024-11-28 03:06:06,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:06,098 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 186 flow [2024-11-28 03:06:06,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-28 03:06:06,099 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2024-11-28 03:06:06,099 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 186 flow [2024-11-28 03:06:06,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:06,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:06,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:06,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:06:06,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:06,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash 444239607, now seen corresponding path program 1 times [2024-11-28 03:06:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:06,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433470310] [2024-11-28 03:06:06,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433470310] [2024-11-28 03:06:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433470310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:06,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:06:06,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915448268] [2024-11-28 03:06:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:06,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:06,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:06,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:06,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-28 03:06:06,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-28 03:06:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:08,093 INFO L124 PetriNetUnfolderBase]: 4433/9850 cut-off events. [2024-11-28 03:06:08,094 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2024-11-28 03:06:08,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17834 conditions, 9850 events. 4433/9850 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 100474 event pairs, 3894 based on Foata normal form. 1/8189 useless extension candidates. Maximal degree in co-relation 17826. Up to 3472 conditions per place. [2024-11-28 03:06:08,175 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 66 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-28 03:06:08,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 440 flow [2024-11-28 03:06:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:06:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-28 03:06:08,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-28 03:06:08,178 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 186 flow. Second operand 4 states and 216 transitions. [2024-11-28 03:06:08,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 440 flow [2024-11-28 03:06:08,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:08,206 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 208 flow [2024-11-28 03:06:08,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-28 03:06:08,207 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-28 03:06:08,207 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 208 flow [2024-11-28 03:06:08,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:08,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:08,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:08,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:06:08,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:08,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1612565637, now seen corresponding path program 1 times [2024-11-28 03:06:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951558473] [2024-11-28 03:06:08,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:08,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:08,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951558473] [2024-11-28 03:06:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951558473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:08,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:06:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239358665] [2024-11-28 03:06:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:08,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:08,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:08,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:06:08,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-11-28 03:06:08,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:08,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:08,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-11-28 03:06:08,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:10,077 INFO L124 PetriNetUnfolderBase]: 5403/10829 cut-off events. [2024-11-28 03:06:10,078 INFO L125 PetriNetUnfolderBase]: For 1618/1618 co-relation queries the response was YES. [2024-11-28 03:06:10,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20133 conditions, 10829 events. 5403/10829 cut-off events. For 1618/1618 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 106156 event pairs, 4876 based on Foata normal form. 1/8448 useless extension candidates. Maximal degree in co-relation 20123. Up to 8400 conditions per place. [2024-11-28 03:06:10,168 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 46 selfloop transitions, 7 changer transitions 2/86 dead transitions. [2024-11-28 03:06:10,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 355 flow [2024-11-28 03:06:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:06:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2024-11-28 03:06:10,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-11-28 03:06:10,170 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 208 flow. Second operand 4 states and 187 transitions. [2024-11-28 03:06:10,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 355 flow [2024-11-28 03:06:10,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:10,175 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 252 flow [2024-11-28 03:06:10,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-11-28 03:06:10,176 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-28 03:06:10,178 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 252 flow [2024-11-28 03:06:10,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:10,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:10,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:10,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:06:10,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:10,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1550070641, now seen corresponding path program 1 times [2024-11-28 03:06:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922232332] [2024-11-28 03:06:10,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:10,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922232332] [2024-11-28 03:06:10,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922232332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:10,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215395352] [2024-11-28 03:06:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:10,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:10,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:10,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:10,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-11-28 03:06:10,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 252 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 03:06:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-11-28 03:06:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:12,591 INFO L124 PetriNetUnfolderBase]: 7410/14129 cut-off events. [2024-11-28 03:06:12,591 INFO L125 PetriNetUnfolderBase]: For 2188/2188 co-relation queries the response was YES. [2024-11-28 03:06:12,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28125 conditions, 14129 events. 7410/14129 cut-off events. For 2188/2188 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 136561 event pairs, 1284 based on Foata normal form. 0/13142 useless extension candidates. Maximal degree in co-relation 28113. Up to 5622 conditions per place. [2024-11-28 03:06:12,729 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 65 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-11-28 03:06:12,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 112 transitions, 518 flow [2024-11-28 03:06:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-11-28 03:06:12,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-28 03:06:12,731 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 252 flow. Second operand 5 states and 244 transitions. [2024-11-28 03:06:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 112 transitions, 518 flow [2024-11-28 03:06:12,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:12,744 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 347 flow [2024-11-28 03:06:12,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-11-28 03:06:12,749 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-28 03:06:12,749 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 347 flow [2024-11-28 03:06:12,750 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 03:06:12,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:12,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:12,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:06:12,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1550070642, now seen corresponding path program 1 times [2024-11-28 03:06:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245734885] [2024-11-28 03:06:12,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:12,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245734885] [2024-11-28 03:06:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245734885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:12,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:12,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398615552] [2024-11-28 03:06:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:12,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:12,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:12,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:06:12,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-28 03:06:12,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:12,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:12,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-28 03:06:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:14,297 INFO L124 PetriNetUnfolderBase]: 6004/12091 cut-off events. [2024-11-28 03:06:14,298 INFO L125 PetriNetUnfolderBase]: For 3497/3497 co-relation queries the response was YES. [2024-11-28 03:06:14,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28215 conditions, 12091 events. 6004/12091 cut-off events. For 3497/3497 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 120179 event pairs, 4366 based on Foata normal form. 0/11145 useless extension candidates. Maximal degree in co-relation 28200. Up to 7534 conditions per place. [2024-11-28 03:06:14,380 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 50 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2024-11-28 03:06:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 465 flow [2024-11-28 03:06:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:06:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-28 03:06:14,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 03:06:14,382 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 347 flow. Second operand 3 states and 145 transitions. [2024-11-28 03:06:14,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 465 flow [2024-11-28 03:06:14,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:14,391 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 348 flow [2024-11-28 03:06:14,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2024-11-28 03:06:14,392 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2024-11-28 03:06:14,392 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 348 flow [2024-11-28 03:06:14,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:14,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:14,393 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:14,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:06:14,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:14,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 753520053, now seen corresponding path program 1 times [2024-11-28 03:06:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081296587] [2024-11-28 03:06:14,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:14,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081296587] [2024-11-28 03:06:14,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081296587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:14,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:14,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249678253] [2024-11-28 03:06:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:14,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:14,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:14,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:14,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:15,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 80 [2024-11-28 03:06:15,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:15,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:15,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 80 [2024-11-28 03:06:15,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:16,629 INFO L124 PetriNetUnfolderBase]: 5271/11041 cut-off events. [2024-11-28 03:06:16,629 INFO L125 PetriNetUnfolderBase]: For 5132/5132 co-relation queries the response was YES. [2024-11-28 03:06:16,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25702 conditions, 11041 events. 5271/11041 cut-off events. For 5132/5132 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 109891 event pairs, 4206 based on Foata normal form. 4/10586 useless extension candidates. Maximal degree in co-relation 25687. Up to 4348 conditions per place. [2024-11-28 03:06:16,708 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 87 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-11-28 03:06:16,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 732 flow [2024-11-28 03:06:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 255 transitions. [2024-11-28 03:06:16,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-28 03:06:16,711 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 348 flow. Second operand 5 states and 255 transitions. [2024-11-28 03:06:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 732 flow [2024-11-28 03:06:16,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:16,771 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 362 flow [2024-11-28 03:06:16,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2024-11-28 03:06:16,772 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2024-11-28 03:06:16,772 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 362 flow [2024-11-28 03:06:16,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:16,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:16,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:16,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:06:16,773 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:16,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 735767756, now seen corresponding path program 1 times [2024-11-28 03:06:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833935308] [2024-11-28 03:06:16,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833935308] [2024-11-28 03:06:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833935308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:16,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316006168] [2024-11-28 03:06:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:16,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:16,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:16,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:06:17,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 80 [2024-11-28 03:06:17,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:17,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 80 [2024-11-28 03:06:17,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:18,747 INFO L124 PetriNetUnfolderBase]: 4679/10161 cut-off events. [2024-11-28 03:06:18,748 INFO L125 PetriNetUnfolderBase]: For 4492/4492 co-relation queries the response was YES. [2024-11-28 03:06:18,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23393 conditions, 10161 events. 4679/10161 cut-off events. For 4492/4492 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 100844 event pairs, 3262 based on Foata normal form. 0/9414 useless extension candidates. Maximal degree in co-relation 23377. Up to 5414 conditions per place. [2024-11-28 03:06:18,830 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 48 selfloop transitions, 5 changer transitions 1/88 dead transitions. [2024-11-28 03:06:18,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 480 flow [2024-11-28 03:06:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:06:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-28 03:06:18,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-28 03:06:18,833 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 362 flow. Second operand 4 states and 188 transitions. [2024-11-28 03:06:18,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 480 flow [2024-11-28 03:06:18,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 468 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 03:06:18,843 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 352 flow [2024-11-28 03:06:18,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-28 03:06:18,844 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-28 03:06:18,844 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 352 flow [2024-11-28 03:06:18,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:18,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:18,845 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:18,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:06:18,845 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:18,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1282905155, now seen corresponding path program 1 times [2024-11-28 03:06:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014503025] [2024-11-28 03:06:18,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:19,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:19,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014503025] [2024-11-28 03:06:19,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014503025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:19,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:19,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:06:19,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673539448] [2024-11-28 03:06:19,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:19,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:19,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:19,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:19,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-11-28 03:06:19,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:19,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:19,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-11-28 03:06:19,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:21,205 INFO L124 PetriNetUnfolderBase]: 6125/11403 cut-off events. [2024-11-28 03:06:21,205 INFO L125 PetriNetUnfolderBase]: For 4424/4424 co-relation queries the response was YES. [2024-11-28 03:06:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27415 conditions, 11403 events. 6125/11403 cut-off events. For 4424/4424 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 104849 event pairs, 1302 based on Foata normal form. 10/10835 useless extension candidates. Maximal degree in co-relation 27399. Up to 3719 conditions per place. [2024-11-28 03:06:21,297 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 62 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-11-28 03:06:21,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 588 flow [2024-11-28 03:06:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-11-28 03:06:21,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075 [2024-11-28 03:06:21,299 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 352 flow. Second operand 5 states and 243 transitions. [2024-11-28 03:06:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 588 flow [2024-11-28 03:06:21,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 109 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:06:21,363 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 398 flow [2024-11-28 03:06:21,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2024-11-28 03:06:21,364 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-11-28 03:06:21,364 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 398 flow [2024-11-28 03:06:21,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:21,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:21,365 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:21,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:06:21,365 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:21,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1585159192, now seen corresponding path program 1 times [2024-11-28 03:06:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:21,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289976635] [2024-11-28 03:06:21,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289976635] [2024-11-28 03:06:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289976635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:06:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973410313] [2024-11-28 03:06:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:21,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:06:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:21,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:06:21,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:06:21,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 80 [2024-11-28 03:06:21,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:21,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:21,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 80 [2024-11-28 03:06:21,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:23,741 INFO L124 PetriNetUnfolderBase]: 6533/11385 cut-off events. [2024-11-28 03:06:23,741 INFO L125 PetriNetUnfolderBase]: For 6883/6883 co-relation queries the response was YES. [2024-11-28 03:06:23,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29856 conditions, 11385 events. 6533/11385 cut-off events. For 6883/6883 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 100678 event pairs, 2428 based on Foata normal form. 348/11416 useless extension candidates. Maximal degree in co-relation 29838. Up to 4036 conditions per place. [2024-11-28 03:06:23,828 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 62 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-11-28 03:06:23,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 107 transitions, 628 flow [2024-11-28 03:06:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-11-28 03:06:23,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-11-28 03:06:23,831 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 398 flow. Second operand 5 states and 242 transitions. [2024-11-28 03:06:23,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 107 transitions, 628 flow [2024-11-28 03:06:23,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 591 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:06:23,868 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 387 flow [2024-11-28 03:06:23,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-11-28 03:06:23,869 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-28 03:06:23,869 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 387 flow [2024-11-28 03:06:23,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:23,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:23,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:23,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:06:23,870 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:23,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash 216307092, now seen corresponding path program 1 times [2024-11-28 03:06:23,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:23,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000796705] [2024-11-28 03:06:23,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:23,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000796705] [2024-11-28 03:06:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000796705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:24,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064823091] [2024-11-28 03:06:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:24,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:24,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:24,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:24,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 80 [2024-11-28 03:06:24,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:24,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:24,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 80 [2024-11-28 03:06:24,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:25,586 INFO L124 PetriNetUnfolderBase]: 5331/10574 cut-off events. [2024-11-28 03:06:25,586 INFO L125 PetriNetUnfolderBase]: For 7372/7372 co-relation queries the response was YES. [2024-11-28 03:06:25,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27836 conditions, 10574 events. 5331/10574 cut-off events. For 7372/7372 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 99620 event pairs, 2275 based on Foata normal form. 130/10367 useless extension candidates. Maximal degree in co-relation 27819. Up to 3416 conditions per place. [2024-11-28 03:06:25,643 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 76 selfloop transitions, 14 changer transitions 5/124 dead transitions. [2024-11-28 03:06:25,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 780 flow [2024-11-28 03:06:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-11-28 03:06:25,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-11-28 03:06:25,645 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 387 flow. Second operand 5 states and 259 transitions. [2024-11-28 03:06:25,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 780 flow [2024-11-28 03:06:25,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 716 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-28 03:06:25,669 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 451 flow [2024-11-28 03:06:25,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2024-11-28 03:06:25,669 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2024-11-28 03:06:25,670 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 451 flow [2024-11-28 03:06:25,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:25,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:25,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:25,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:06:25,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:25,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1895294691, now seen corresponding path program 1 times [2024-11-28 03:06:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:25,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904326836] [2024-11-28 03:06:25,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904326836] [2024-11-28 03:06:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904326836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:25,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:25,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:06:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173620271] [2024-11-28 03:06:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:25,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:25,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:25,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:25,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 80 [2024-11-28 03:06:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 451 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:25,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 80 [2024-11-28 03:06:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:27,083 INFO L124 PetriNetUnfolderBase]: 6207/12188 cut-off events. [2024-11-28 03:06:27,083 INFO L125 PetriNetUnfolderBase]: For 12308/12308 co-relation queries the response was YES. [2024-11-28 03:06:27,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31756 conditions, 12188 events. 6207/12188 cut-off events. For 12308/12308 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 118495 event pairs, 2768 based on Foata normal form. 12/11947 useless extension candidates. Maximal degree in co-relation 31738. Up to 3569 conditions per place. [2024-11-28 03:06:27,158 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 81 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-11-28 03:06:27,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 809 flow [2024-11-28 03:06:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:06:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:06:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 279 transitions. [2024-11-28 03:06:27,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6975 [2024-11-28 03:06:27,160 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 451 flow. Second operand 5 states and 279 transitions. [2024-11-28 03:06:27,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 809 flow [2024-11-28 03:06:27,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 779 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 03:06:27,180 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 486 flow [2024-11-28 03:06:27,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=486, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-11-28 03:06:27,181 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2024-11-28 03:06:27,181 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 486 flow [2024-11-28 03:06:27,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:27,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:27,181 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:27,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:06:27,181 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:27,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1677833693, now seen corresponding path program 1 times [2024-11-28 03:06:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554893602] [2024-11-28 03:06:27,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554893602] [2024-11-28 03:06:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554893602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:06:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478858457] [2024-11-28 03:06:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:27,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:06:27,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:27,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:06:27,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:06:27,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 80 [2024-11-28 03:06:27,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:27,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:27,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 80 [2024-11-28 03:06:27,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:29,118 INFO L124 PetriNetUnfolderBase]: 6176/12018 cut-off events. [2024-11-28 03:06:29,119 INFO L125 PetriNetUnfolderBase]: For 13741/13741 co-relation queries the response was YES. [2024-11-28 03:06:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33047 conditions, 12018 events. 6176/12018 cut-off events. For 13741/13741 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 118026 event pairs, 3697 based on Foata normal form. 48/11758 useless extension candidates. Maximal degree in co-relation 33028. Up to 5320 conditions per place. [2024-11-28 03:06:29,195 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 121 selfloop transitions, 22 changer transitions 0/173 dead transitions. [2024-11-28 03:06:29,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 173 transitions, 1212 flow [2024-11-28 03:06:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:06:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:06:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 385 transitions. [2024-11-28 03:06:29,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-28 03:06:29,198 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 486 flow. Second operand 7 states and 385 transitions. [2024-11-28 03:06:29,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 173 transitions, 1212 flow [2024-11-28 03:06:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 1197 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:29,222 INFO L231 Difference]: Finished difference. Result has 101 places, 103 transitions, 756 flow [2024-11-28 03:06:29,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=101, PETRI_TRANSITIONS=103} [2024-11-28 03:06:29,222 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2024-11-28 03:06:29,223 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 103 transitions, 756 flow [2024-11-28 03:06:29,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:29,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:29,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:29,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:06:29,223 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:29,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 139682447, now seen corresponding path program 1 times [2024-11-28 03:06:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690396600] [2024-11-28 03:06:29,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:29,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:29,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690396600] [2024-11-28 03:06:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690396600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:29,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:29,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294772243] [2024-11-28 03:06:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:29,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:29,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:29,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:29,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 80 [2024-11-28 03:06:29,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 103 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:29,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:29,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 80 [2024-11-28 03:06:29,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:39,876 INFO L124 PetriNetUnfolderBase]: 51902/84525 cut-off events. [2024-11-28 03:06:39,876 INFO L125 PetriNetUnfolderBase]: For 196611/197875 co-relation queries the response was YES. [2024-11-28 03:06:40,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249577 conditions, 84525 events. 51902/84525 cut-off events. For 196611/197875 co-relation queries the response was YES. Maximal size of possible extension queue 4497. Compared 815210 event pairs, 18764 based on Foata normal form. 0/82472 useless extension candidates. Maximal degree in co-relation 249554. Up to 46421 conditions per place. [2024-11-28 03:06:40,400 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 294 selfloop transitions, 14 changer transitions 27/360 dead transitions. [2024-11-28 03:06:40,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 360 transitions, 3854 flow [2024-11-28 03:06:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:06:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:06:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 413 transitions. [2024-11-28 03:06:40,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6453125 [2024-11-28 03:06:40,402 INFO L175 Difference]: Start difference. First operand has 101 places, 103 transitions, 756 flow. Second operand 8 states and 413 transitions. [2024-11-28 03:06:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 360 transitions, 3854 flow [2024-11-28 03:06:41,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 360 transitions, 3801 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-11-28 03:06:41,789 INFO L231 Difference]: Finished difference. Result has 113 places, 116 transitions, 849 flow [2024-11-28 03:06:41,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=849, PETRI_PLACES=113, PETRI_TRANSITIONS=116} [2024-11-28 03:06:41,790 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2024-11-28 03:06:41,790 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 116 transitions, 849 flow [2024-11-28 03:06:41,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:41,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:41,791 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:41,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:06:41,791 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-28 03:06:41,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash -26448811, now seen corresponding path program 1 times [2024-11-28 03:06:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823676894] [2024-11-28 03:06:41,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:06:41,814 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:06:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:06:41,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:06:41,835 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:06:41,835 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (13 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (12 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-11-28 03:06:41,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (3 of 16 remaining) [2024-11-28 03:06:41,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 16 remaining) [2024-11-28 03:06:41,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 16 remaining) [2024-11-28 03:06:41,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-11-28 03:06:41,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:06:41,838 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:41,839 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:06:41,839 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:06:41,878 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-28 03:06:41,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 101 transitions, 274 flow [2024-11-28 03:06:42,246 INFO L124 PetriNetUnfolderBase]: 362/1567 cut-off events. [2024-11-28 03:06:42,246 INFO L125 PetriNetUnfolderBase]: For 419/435 co-relation queries the response was YES. [2024-11-28 03:06:42,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 1567 events. 362/1567 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11688 event pairs, 32 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 1009. Up to 192 conditions per place. [2024-11-28 03:06:42,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 101 transitions, 274 flow [2024-11-28 03:06:42,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 101 transitions, 274 flow [2024-11-28 03:06:42,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:06:42,265 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;@7f2510ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:06:42,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-28 03:06:42,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:06:42,267 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-28 03:06:42,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:06:42,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:42,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:06:42,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-28 03:06:42,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 17377981, now seen corresponding path program 1 times [2024-11-28 03:06:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333276543] [2024-11-28 03:06:42,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:42,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333276543] [2024-11-28 03:06:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333276543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:42,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:42,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:06:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689149980] [2024-11-28 03:06:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:42,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:06:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:42,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:06:42,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:06:42,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 101 [2024-11-28 03:06:42,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 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 03:06:42,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:42,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 101 [2024-11-28 03:06:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:48,934 INFO L124 PetriNetUnfolderBase]: 34066/64837 cut-off events. [2024-11-28 03:06:48,934 INFO L125 PetriNetUnfolderBase]: For 20374/20374 co-relation queries the response was YES. [2024-11-28 03:06:49,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117455 conditions, 64837 events. 34066/64837 cut-off events. For 20374/20374 co-relation queries the response was YES. Maximal size of possible extension queue 2942. Compared 713545 event pairs, 29642 based on Foata normal form. 17554/71783 useless extension candidates. Maximal degree in co-relation 37009. Up to 45834 conditions per place. [2024-11-28 03:06:49,337 INFO L140 encePairwiseOnDemand]: 92/101 looper letters, 42 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2024-11-28 03:06:49,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 334 flow [2024-11-28 03:06:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:06:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:06:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 145 transitions. [2024-11-28 03:06:49,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178217821782178 [2024-11-28 03:06:49,338 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 274 flow. Second operand 2 states and 145 transitions. [2024-11-28 03:06:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 334 flow [2024-11-28 03:06:49,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:49,348 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 250 flow [2024-11-28 03:06:49,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-28 03:06:49,349 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2024-11-28 03:06:49,349 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 250 flow [2024-11-28 03:06:49,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 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 03:06:49,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:49,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:49,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:06:49,349 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-28 03:06:49,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 538715801, now seen corresponding path program 1 times [2024-11-28 03:06:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480249195] [2024-11-28 03:06:49,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480249195] [2024-11-28 03:06:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480249195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:06:49,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209518169] [2024-11-28 03:06:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:49,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:06:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:49,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:06:49,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:06:49,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 101 [2024-11-28 03:06:49,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:49,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:49,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 101 [2024-11-28 03:06:49,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:06:56,799 INFO L124 PetriNetUnfolderBase]: 38403/67431 cut-off events. [2024-11-28 03:06:56,799 INFO L125 PetriNetUnfolderBase]: For 14309/14309 co-relation queries the response was YES. [2024-11-28 03:06:56,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126130 conditions, 67431 events. 38403/67431 cut-off events. For 14309/14309 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 693843 event pairs, 25339 based on Foata normal form. 0/60302 useless extension candidates. Maximal degree in co-relation 126121. Up to 39814 conditions per place. [2024-11-28 03:06:57,193 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 51 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-11-28 03:06:57,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 370 flow [2024-11-28 03:06:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:06:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:06:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-11-28 03:06:57,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6072607260726073 [2024-11-28 03:06:57,194 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 250 flow. Second operand 3 states and 184 transitions. [2024-11-28 03:06:57,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 370 flow [2024-11-28 03:06:57,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:06:57,206 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 250 flow [2024-11-28 03:06:57,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-11-28 03:06:57,206 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2024-11-28 03:06:57,207 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 250 flow [2024-11-28 03:06:57,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:57,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:06:57,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:06:57,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:06:57,207 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-28 03:06:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 538715802, now seen corresponding path program 1 times [2024-11-28 03:06:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343258479] [2024-11-28 03:06:57,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:06:57,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343258479] [2024-11-28 03:06:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343258479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:06:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998323215] [2024-11-28 03:06:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:57,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:06:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:57,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:06:57,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:06:57,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 101 [2024-11-28 03:06:57,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:57,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:06:57,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 101 [2024-11-28 03:06:57,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand