./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/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_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-100.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:22:25,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:22:26,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:22:26,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:22:26,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:22:26,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:22:26,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:22:26,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:22:26,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:22:26,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:22:26,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:22:26,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:22:26,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:22:26,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:22:26,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:22:26,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:22:26,141 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:22:26,141 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:22:26,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:22:26,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:22:26,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:22:26,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:22:26,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:22:26,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:22:26,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:22:26,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:22:26,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:22:26,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:22:26,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:22:26,144 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_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/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 ! overflow) ) 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 -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2024-11-28 03:22:26,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:22:26,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:22:26,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:22:26,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:22:26,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:22:26,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-28 03:22:29,526 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/data/fd2dae831/0c137582512b42169baebb02f84ff8be/FLAGcfdac3f1b [2024-11-28 03:22:29,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:22:29,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-28 03:22:29,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/data/fd2dae831/0c137582512b42169baebb02f84ff8be/FLAGcfdac3f1b [2024-11-28 03:22:29,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/data/fd2dae831/0c137582512b42169baebb02f84ff8be [2024-11-28 03:22:29,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:22:29,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:22:29,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:22:29,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:22:29,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:22:29,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:22:29" (1/1) ... [2024-11-28 03:22:29,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af2f2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:29, skipping insertion in model container [2024-11-28 03:22:29,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:22:29" (1/1) ... [2024-11-28 03:22:29,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:22:30,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:22:30,395 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:22:30,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:22:30,512 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:22:30,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30 WrapperNode [2024-11-28 03:22:30,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:22:30,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:22:30,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:22:30,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:22:30,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,572 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 89 [2024-11-28 03:22:30,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:22:30,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:22:30,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:22:30,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:22:30,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,616 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:22:30,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,624 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:22:30,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:22:30,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:22:30,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:22:30,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (1/1) ... [2024-11-28 03:22:30,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:22:30,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:30,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:22:30,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:22:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:22:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-28 03:22:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-28 03:22:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-28 03:22:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-28 03:22:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:22:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:22:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:22:30,712 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 03:22:30,856 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:22:30,858 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:22:31,075 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:22:31,077 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:22:31,262 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:22:31,263 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:22:31,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:31 BoogieIcfgContainer [2024-11-28 03:22:31,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:22:31,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:22:31,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:22:31,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:22:31,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:22:29" (1/3) ... [2024-11-28 03:22:31,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b071329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:22:31, skipping insertion in model container [2024-11-28 03:22:31,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:22:30" (2/3) ... [2024-11-28 03:22:31,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b071329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:22:31, skipping insertion in model container [2024-11-28 03:22:31,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:31" (3/3) ... [2024-11-28 03:22:31,278 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2024-11-28 03:22:31,296 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:22:31,297 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-100.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2024-11-28 03:22:31,298 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:22:31,370 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:22:31,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-28 03:22:31,478 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-28 03:22:31,482 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:22:31,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-28 03:22:31,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-28 03:22:31,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-28 03:22:31,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:22:31,519 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=LoopHeads, 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;@260040f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:22:31,522 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-28 03:22:31,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:22:31,533 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 03:22:31,533 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:22:31,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:31,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:22:31,535 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:31,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash -218593543, now seen corresponding path program 1 times [2024-11-28 03:22:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68745239] [2024-11-28 03:22:31,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:31,858 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 03:22:31,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:31,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68745239] [2024-11-28 03:22:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68745239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:22:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:22:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644945936] [2024-11-28 03:22:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:31,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:22:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:31,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:22:31,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:22:31,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:31,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:22:31,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:31,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:31,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:32,090 INFO L124 PetriNetUnfolderBase]: 123/288 cut-off events. [2024-11-28 03:22:32,091 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 03:22:32,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 288 events. 123/288 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1325 event pairs, 96 based on Foata normal form. 11/229 useless extension candidates. Maximal degree in co-relation 474. Up to 211 conditions per place. [2024-11-28 03:22:32,098 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2024-11-28 03:22:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 99 flow [2024-11-28 03:22:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:22:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:22:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-28 03:22:32,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 03:22:32,115 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 52 transitions. [2024-11-28 03:22:32,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 99 flow [2024-11-28 03:22:32,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:22:32,124 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2024-11-28 03:22:32,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2024-11-28 03:22:32,133 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-28 03:22:32,134 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2024-11-28 03:22:32,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:22:32,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:32,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:32,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:22:32,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:32,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:32,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1813535060, now seen corresponding path program 1 times [2024-11-28 03:22:32,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:32,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154646764] [2024-11-28 03:22:32,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:32,190 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 03:22:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154646764] [2024-11-28 03:22:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154646764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:22:32,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:22:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612346896] [2024-11-28 03:22:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:22:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:32,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:22:32,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:22:32,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:32,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:22:32,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:32,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:32,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:32,321 INFO L124 PetriNetUnfolderBase]: 107/255 cut-off events. [2024-11-28 03:22:32,321 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:22:32,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 255 events. 107/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1120 event pairs, 82 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 448. Up to 184 conditions per place. [2024-11-28 03:22:32,324 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-28 03:22:32,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 92 flow [2024-11-28 03:22:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:22:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:22:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-28 03:22:32,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-28 03:22:32,329 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 51 transitions. [2024-11-28 03:22:32,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 92 flow [2024-11-28 03:22:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:22:32,332 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 59 flow [2024-11-28 03:22:32,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-28 03:22:32,333 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-28 03:22:32,333 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 59 flow [2024-11-28 03:22:32,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:22:32,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:32,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:32,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:22:32,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:32,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:32,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1813796197, now seen corresponding path program 1 times [2024-11-28 03:22:32,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:32,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434551505] [2024-11-28 03:22:32,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:32,458 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 03:22:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:32,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434551505] [2024-11-28 03:22:32,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434551505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:32,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:22:32,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:22:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196372077] [2024-11-28 03:22:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:32,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:22:32,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:32,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:22:32,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:22:32,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:32,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 03:22:32,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:32,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:32,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:32,712 INFO L124 PetriNetUnfolderBase]: 213/434 cut-off events. [2024-11-28 03:22:32,713 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:22:32,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 434 events. 213/434 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1930 event pairs, 118 based on Foata normal form. 14/363 useless extension candidates. Maximal degree in co-relation 819. Up to 253 conditions per place. [2024-11-28 03:22:32,719 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-28 03:22:32,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 190 flow [2024-11-28 03:22:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:22:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:22:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-28 03:22:32,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2024-11-28 03:22:32,722 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 59 flow. Second operand 4 states and 87 transitions. [2024-11-28 03:22:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 190 flow [2024-11-28 03:22:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:22:32,724 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2024-11-28 03:22:32,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-28 03:22:32,728 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-28 03:22:32,729 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2024-11-28 03:22:32,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 03:22:32,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:32,729 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:32,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:22:32,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:32,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash -180752378, now seen corresponding path program 1 times [2024-11-28 03:22:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67180336] [2024-11-28 03:22:32,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67180336] [2024-11-28 03:22:32,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67180336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689219171] [2024-11-28 03:22:32,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:32,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:32,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:32,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:22:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:32,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:22:32,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:33,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:22:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689219171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:22:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 03:22:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156522656] [2024-11-28 03:22:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:33,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:22:33,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:33,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:22:33,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:22:33,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:33,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 03:22:33,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:33,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:33,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:33,384 INFO L124 PetriNetUnfolderBase]: 193/378 cut-off events. [2024-11-28 03:22:33,385 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-28 03:22:33,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 378 events. 193/378 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1590 event pairs, 23 based on Foata normal form. 14/349 useless extension candidates. Maximal degree in co-relation 839. Up to 94 conditions per place. [2024-11-28 03:22:33,389 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-28 03:22:33,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 65 transitions, 277 flow [2024-11-28 03:22:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:22:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:22:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-28 03:22:33,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-11-28 03:22:33,393 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 6 states and 125 transitions. [2024-11-28 03:22:33,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 65 transitions, 277 flow [2024-11-28 03:22:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 65 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:22:33,398 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 84 flow [2024-11-28 03:22:33,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-11-28 03:22:33,399 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-11-28 03:22:33,399 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 84 flow [2024-11-28 03:22:33,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 03:22:33,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:33,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:33,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:22:33,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:33,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:33,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1955500328, now seen corresponding path program 1 times [2024-11-28 03:22:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557981041] [2024-11-28 03:22:33,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:33,667 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 03:22:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557981041] [2024-11-28 03:22:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557981041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:22:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:22:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109633935] [2024-11-28 03:22:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:33,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:22:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:33,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:22:33,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:22:33,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:33,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 03:22:33,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:33,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:33,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:33,851 INFO L124 PetriNetUnfolderBase]: 303/592 cut-off events. [2024-11-28 03:22:33,851 INFO L125 PetriNetUnfolderBase]: For 424/434 co-relation queries the response was YES. [2024-11-28 03:22:33,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 592 events. 303/592 cut-off events. For 424/434 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2641 event pairs, 189 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 1399. Up to 387 conditions per place. [2024-11-28 03:22:33,855 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-28 03:22:33,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 256 flow [2024-11-28 03:22:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:22:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:22:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-28 03:22:33,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-28 03:22:33,857 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 4 states and 82 transitions. [2024-11-28 03:22:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 256 flow [2024-11-28 03:22:33,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 229 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-28 03:22:33,859 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 97 flow [2024-11-28 03:22:33,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-11-28 03:22:33,860 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-28 03:22:33,860 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 97 flow [2024-11-28 03:22:33,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 03:22:33,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:33,861 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:33,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:22:33,861 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:33,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1308356126, now seen corresponding path program 1 times [2024-11-28 03:22:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881312941] [2024-11-28 03:22:33,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881312941] [2024-11-28 03:22:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881312941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327127633] [2024-11-28 03:22:33,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:33,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:33,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:33,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:22:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:34,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:22:34,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:34,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:34,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327127633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:34,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:34,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 03:22:34,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210282722] [2024-11-28 03:22:34,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:34,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:34,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:34,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:34,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:34,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:34,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 97 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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 03:22:34,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:34,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:34,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:34,686 INFO L124 PetriNetUnfolderBase]: 568/1106 cut-off events. [2024-11-28 03:22:34,686 INFO L125 PetriNetUnfolderBase]: For 712/776 co-relation queries the response was YES. [2024-11-28 03:22:34,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1106 events. 568/1106 cut-off events. For 712/776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5525 event pairs, 151 based on Foata normal form. 60/1159 useless extension candidates. Maximal degree in co-relation 2754. Up to 315 conditions per place. [2024-11-28 03:22:34,694 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 115 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2024-11-28 03:22:34,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 131 transitions, 699 flow [2024-11-28 03:22:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:22:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:22:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-11-28 03:22:34,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-11-28 03:22:34,699 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 97 flow. Second operand 10 states and 219 transitions. [2024-11-28 03:22:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 131 transitions, 699 flow [2024-11-28 03:22:34,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 131 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:22:34,705 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 159 flow [2024-11-28 03:22:34,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-11-28 03:22:34,707 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2024-11-28 03:22:34,708 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 159 flow [2024-11-28 03:22:34,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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 03:22:34,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:34,709 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:34,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:22:34,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:34,910 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:34,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash 626438176, now seen corresponding path program 1 times [2024-11-28 03:22:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301781676] [2024-11-28 03:22:34,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:35,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301781676] [2024-11-28 03:22:35,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301781676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129701502] [2024-11-28 03:22:35,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:35,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:35,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:35,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:22:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:35,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:22:35,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:35,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:22:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129701502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:22:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:22:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 03:22:35,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969100721] [2024-11-28 03:22:35,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:22:35,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:22:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:35,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:22:35,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:22:35,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:35,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:35,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:35,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:35,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:35,548 INFO L124 PetriNetUnfolderBase]: 595/1154 cut-off events. [2024-11-28 03:22:35,549 INFO L125 PetriNetUnfolderBase]: For 1286/1300 co-relation queries the response was YES. [2024-11-28 03:22:35,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1154 events. 595/1154 cut-off events. For 1286/1300 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5707 event pairs, 156 based on Foata normal form. 39/1145 useless extension candidates. Maximal degree in co-relation 3172. Up to 317 conditions per place. [2024-11-28 03:22:35,559 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 84 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-28 03:22:35,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 695 flow [2024-11-28 03:22:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:22:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:22:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-28 03:22:35,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 03:22:35,562 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 159 flow. Second operand 6 states and 116 transitions. [2024-11-28 03:22:35,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 695 flow [2024-11-28 03:22:35,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 645 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-28 03:22:35,574 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 155 flow [2024-11-28 03:22:35,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-11-28 03:22:35,575 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-28 03:22:35,577 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 155 flow [2024-11-28 03:22:35,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:35,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:35,578 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:35,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:22:35,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:35,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:35,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2055252715, now seen corresponding path program 1 times [2024-11-28 03:22:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819757770] [2024-11-28 03:22:35,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819757770] [2024-11-28 03:22:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819757770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:35,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600726080] [2024-11-28 03:22:35,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:35,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:35,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:22:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:35,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:22:35,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:35,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:36,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600726080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:36,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:36,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 03:22:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477382770] [2024-11-28 03:22:36,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:36,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:36,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:36,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:36,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:36,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 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 03:22:36,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:36,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:36,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:36,616 INFO L124 PetriNetUnfolderBase]: 1099/2138 cut-off events. [2024-11-28 03:22:36,616 INFO L125 PetriNetUnfolderBase]: For 2629/2655 co-relation queries the response was YES. [2024-11-28 03:22:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6036 conditions, 2138 events. 1099/2138 cut-off events. For 2629/2655 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11675 event pairs, 372 based on Foata normal form. 117/2246 useless extension candidates. Maximal degree in co-relation 6022. Up to 736 conditions per place. [2024-11-28 03:22:36,632 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 149 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2024-11-28 03:22:36,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 164 transitions, 1155 flow [2024-11-28 03:22:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:22:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:22:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-28 03:22:36,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.621875 [2024-11-28 03:22:36,636 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 155 flow. Second operand 10 states and 199 transitions. [2024-11-28 03:22:36,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 164 transitions, 1155 flow [2024-11-28 03:22:36,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 164 transitions, 1140 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:22:36,647 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 210 flow [2024-11-28 03:22:36,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-11-28 03:22:36,650 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-11-28 03:22:36,651 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 210 flow [2024-11-28 03:22:36,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 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 03:22:36,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:36,652 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:36,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:22:36,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:36,852 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:36,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash -575055965, now seen corresponding path program 2 times [2024-11-28 03:22:36,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:36,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789958916] [2024-11-28 03:22:36,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:36,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:36,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:36,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789958916] [2024-11-28 03:22:36,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789958916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:36,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374979709] [2024-11-28 03:22:36,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:36,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:36,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:36,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:36,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:22:37,045 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:37,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:37,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:22:37,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:37,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:37,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374979709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:37,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:37,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:22:37,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809836060] [2024-11-28 03:22:37,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:37,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:37,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:37,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:37,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:37,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 03:22:37,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 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 03:22:37,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 03:22:37,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:38,340 INFO L124 PetriNetUnfolderBase]: 2694/5145 cut-off events. [2024-11-28 03:22:38,340 INFO L125 PetriNetUnfolderBase]: For 8686/8721 co-relation queries the response was YES. [2024-11-28 03:22:38,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15558 conditions, 5145 events. 2694/5145 cut-off events. For 8686/8721 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 34141 event pairs, 334 based on Foata normal form. 72/5216 useless extension candidates. Maximal degree in co-relation 15542. Up to 1195 conditions per place. [2024-11-28 03:22:38,370 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 120 selfloop transitions, 30 changer transitions 6/160 dead transitions. [2024-11-28 03:22:38,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 160 transitions, 1219 flow [2024-11-28 03:22:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:22:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:22:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-11-28 03:22:38,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-11-28 03:22:38,372 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 210 flow. Second operand 10 states and 148 transitions. [2024-11-28 03:22:38,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 160 transitions, 1219 flow [2024-11-28 03:22:38,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1149 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-28 03:22:38,416 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 470 flow [2024-11-28 03:22:38,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-28 03:22:38,417 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-11-28 03:22:38,419 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 470 flow [2024-11-28 03:22:38,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 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 03:22:38,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:38,419 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:38,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:22:38,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:22:38,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:38,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1013004125, now seen corresponding path program 2 times [2024-11-28 03:22:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:38,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641244740] [2024-11-28 03:22:38,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:38,639 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:38,640 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:38,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641244740] [2024-11-28 03:22:38,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641244740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644763330] [2024-11-28 03:22:38,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:38,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:38,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:38,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:22:38,836 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:38,836 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:38,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:22:38,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:38,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:22:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644763330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:39,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:39,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:22:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732707591] [2024-11-28 03:22:39,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:39,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:39,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:39,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:39,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 03:22:39,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 470 flow. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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 03:22:39,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:39,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 03:22:39,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:40,339 INFO L124 PetriNetUnfolderBase]: 3414/6353 cut-off events. [2024-11-28 03:22:40,339 INFO L125 PetriNetUnfolderBase]: For 14993/15021 co-relation queries the response was YES. [2024-11-28 03:22:40,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21418 conditions, 6353 events. 3414/6353 cut-off events. For 14993/15021 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42784 event pairs, 392 based on Foata normal form. 98/6449 useless extension candidates. Maximal degree in co-relation 21396. Up to 1641 conditions per place. [2024-11-28 03:22:40,441 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 77 selfloop transitions, 18 changer transitions 98/197 dead transitions. [2024-11-28 03:22:40,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 1803 flow [2024-11-28 03:22:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:22:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:22:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-11-28 03:22:40,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-11-28 03:22:40,442 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 470 flow. Second operand 10 states and 147 transitions. [2024-11-28 03:22:40,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 1803 flow [2024-11-28 03:22:40,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 197 transitions, 1802 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:22:40,514 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 556 flow [2024-11-28 03:22:40,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2024-11-28 03:22:40,515 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-11-28 03:22:40,516 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 556 flow [2024-11-28 03:22:40,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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 03:22:40,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:40,517 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:40,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:22:40,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:22:40,718 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:40,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1211665760, now seen corresponding path program 1 times [2024-11-28 03:22:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:40,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506865199] [2024-11-28 03:22:40,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:40,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506865199] [2024-11-28 03:22:40,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506865199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993926196] [2024-11-28 03:22:40,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:40,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:40,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:40,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:22:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:41,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:22:41,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:41,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993926196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:41,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 03:22:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876302006] [2024-11-28 03:22:41,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:41,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:22:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:41,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:22:41,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:22:41,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:41,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 556 flow. Second operand has 24 states, 24 states have (on average 12.333333333333334) internal successors, (296), 24 states have internal predecessors, (296), 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 03:22:41,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:41,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:42,798 INFO L124 PetriNetUnfolderBase]: 2805/5594 cut-off events. [2024-11-28 03:22:42,798 INFO L125 PetriNetUnfolderBase]: For 27197/27517 co-relation queries the response was YES. [2024-11-28 03:22:42,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22770 conditions, 5594 events. 2805/5594 cut-off events. For 27197/27517 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 36302 event pairs, 340 based on Foata normal form. 192/5774 useless extension candidates. Maximal degree in co-relation 22741. Up to 931 conditions per place. [2024-11-28 03:22:42,843 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 540 selfloop transitions, 42 changer transitions 80/672 dead transitions. [2024-11-28 03:22:42,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 672 transitions, 7118 flow [2024-11-28 03:22:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:22:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:22:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 486 transitions. [2024-11-28 03:22:42,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6903409090909091 [2024-11-28 03:22:42,846 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 556 flow. Second operand 22 states and 486 transitions. [2024-11-28 03:22:42,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 672 transitions, 7118 flow [2024-11-28 03:22:42,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 672 transitions, 6691 flow, removed 213 selfloop flow, removed 4 redundant places. [2024-11-28 03:22:42,910 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 885 flow [2024-11-28 03:22:42,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=885, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-11-28 03:22:42,911 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-11-28 03:22:42,911 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 885 flow [2024-11-28 03:22:42,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.333333333333334) internal successors, (296), 24 states have internal predecessors, (296), 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 03:22:42,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:42,912 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:42,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:22:43,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:43,112 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:43,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1799692566, now seen corresponding path program 1 times [2024-11-28 03:22:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570792699] [2024-11-28 03:22:43,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:43,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570792699] [2024-11-28 03:22:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570792699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433027795] [2024-11-28 03:22:43,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:43,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:43,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:43,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:43,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:22:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:43,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:22:43,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:43,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433027795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:43,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 03:22:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404416289] [2024-11-28 03:22:43,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:43,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:22:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:43,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:22:43,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:22:43,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-28 03:22:43,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 885 flow. Second operand has 24 states, 24 states have (on average 12.333333333333334) internal successors, (296), 24 states have internal predecessors, (296), 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 03:22:43,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:43,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-28 03:22:43,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:45,714 INFO L124 PetriNetUnfolderBase]: 5540/11056 cut-off events. [2024-11-28 03:22:45,715 INFO L125 PetriNetUnfolderBase]: For 64635/64693 co-relation queries the response was YES. [2024-11-28 03:22:45,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47591 conditions, 11056 events. 5540/11056 cut-off events. For 64635/64693 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 79433 event pairs, 926 based on Foata normal form. 474/11518 useless extension candidates. Maximal degree in co-relation 47559. Up to 1936 conditions per place. [2024-11-28 03:22:45,786 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1054 selfloop transitions, 42 changer transitions 20/1126 dead transitions. [2024-11-28 03:22:45,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1126 transitions, 14497 flow [2024-11-28 03:22:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:22:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:22:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 436 transitions. [2024-11-28 03:22:45,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-11-28 03:22:45,789 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 885 flow. Second operand 22 states and 436 transitions. [2024-11-28 03:22:45,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1126 transitions, 14497 flow [2024-11-28 03:22:45,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 1126 transitions, 12061 flow, removed 840 selfloop flow, removed 9 redundant places. [2024-11-28 03:22:45,939 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1137 flow [2024-11-28 03:22:45,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1137, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2024-11-28 03:22:45,940 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2024-11-28 03:22:45,940 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1137 flow [2024-11-28 03:22:45,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.333333333333334) internal successors, (296), 24 states have internal predecessors, (296), 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 03:22:45,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:45,940 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:45,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:22:46,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:46,145 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:46,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -929044416, now seen corresponding path program 2 times [2024-11-28 03:22:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337280630] [2024-11-28 03:22:46,145 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:46,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:46,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337280630] [2024-11-28 03:22:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337280630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919279047] [2024-11-28 03:22:46,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:46,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:46,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:22:46,352 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:46,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:46,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:22:46,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:46,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919279047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:46,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:22:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496104534] [2024-11-28 03:22:46,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:46,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:46,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:46,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:46,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 03:22:46,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1137 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 03:22:46,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:46,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 03:22:46,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:48,300 INFO L124 PetriNetUnfolderBase]: 5436/11030 cut-off events. [2024-11-28 03:22:48,300 INFO L125 PetriNetUnfolderBase]: For 61141/61144 co-relation queries the response was YES. [2024-11-28 03:22:48,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47739 conditions, 11030 events. 5436/11030 cut-off events. For 61141/61144 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 79213 event pairs, 1701 based on Foata normal form. 70/11098 useless extension candidates. Maximal degree in co-relation 47701. Up to 4612 conditions per place. [2024-11-28 03:22:48,398 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 60 selfloop transitions, 3 changer transitions 130/197 dead transitions. [2024-11-28 03:22:48,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 197 transitions, 2371 flow [2024-11-28 03:22:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:22:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:22:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-11-28 03:22:48,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-11-28 03:22:48,407 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1137 flow. Second operand 8 states and 107 transitions. [2024-11-28 03:22:48,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 197 transitions, 2371 flow [2024-11-28 03:22:48,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 2029 flow, removed 83 selfloop flow, removed 20 redundant places. [2024-11-28 03:22:48,643 INFO L231 Difference]: Finished difference. Result has 108 places, 64 transitions, 480 flow [2024-11-28 03:22:48,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=480, PETRI_PLACES=108, PETRI_TRANSITIONS=64} [2024-11-28 03:22:48,644 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-11-28 03:22:48,644 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 64 transitions, 480 flow [2024-11-28 03:22:48,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 03:22:48,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:22:48,645 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:48,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:22:48,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:48,846 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 03:22:48,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1622410410, now seen corresponding path program 2 times [2024-11-28 03:22:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623017765] [2024-11-28 03:22:48,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:48,858 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:48,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623017765] [2024-11-28 03:22:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623017765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560458481] [2024-11-28 03:22:49,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:22:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:49,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:49,035 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:49,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:22:49,107 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:22:49,108 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:49,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:22:49,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:49,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 03:22:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560458481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:49,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:49,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:22:49,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782162452] [2024-11-28 03:22:49,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:49,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:22:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:49,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:22:49,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:22:49,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-28 03:22:49,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 64 transitions, 480 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 03:22:49,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:22:49,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-28 03:22:49,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:22:50,088 INFO L124 PetriNetUnfolderBase]: 2616/5512 cut-off events. [2024-11-28 03:22:50,088 INFO L125 PetriNetUnfolderBase]: For 19791/19791 co-relation queries the response was YES. [2024-11-28 03:22:50,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19829 conditions, 5512 events. 2616/5512 cut-off events. For 19791/19791 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 34619 event pairs, 368 based on Foata normal form. 79/5590 useless extension candidates. Maximal degree in co-relation 19801. Up to 2191 conditions per place. [2024-11-28 03:22:50,110 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2024-11-28 03:22:50,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 122 transitions, 1093 flow [2024-11-28 03:22:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:22:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:22:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-11-28 03:22:50,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-28 03:22:50,111 INFO L175 Difference]: Start difference. First operand has 108 places, 64 transitions, 480 flow. Second operand 8 states and 96 transitions. [2024-11-28 03:22:50,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 122 transitions, 1093 flow [2024-11-28 03:22:50,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 835 flow, removed 27 selfloop flow, removed 24 redundant places. [2024-11-28 03:22:50,163 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2024-11-28 03:22:50,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2024-11-28 03:22:50,164 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2024-11-28 03:22:50,164 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2024-11-28 03:22:50,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 03:22:50,167 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-28 03:22:50,167 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2024-11-28 03:22:50,167 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-28 03:22:50,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-28 03:22:50,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-28 03:22:50,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-28 03:22:50,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-28 03:22:50,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-28 03:22:50,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:22:50,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:50,370 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:50,374 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:22:50,374 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:22:50,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:22:50 BasicIcfg [2024-11-28 03:22:50,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:22:50,381 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:22:50,381 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:22:50,381 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:22:50,382 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:22:31" (3/4) ... [2024-11-28 03:22:50,384 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:22:50,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-28 03:22:50,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-28 03:22:50,390 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-11-28 03:22:50,390 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 03:22:50,391 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 03:22:50,391 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:22:50,471 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:22:50,472 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:22:50,472 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:22:50,473 INFO L158 Benchmark]: Toolchain (without parser) took 20559.78ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 91.4MB in the beginning and 884.6MB in the end (delta: -793.2MB). Peak memory consumption was 503.7MB. Max. memory is 16.1GB. [2024-11-28 03:22:50,473 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 72.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:50,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 599.47ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 71.6MB in the end (delta: 19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:22:50,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.75ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:22:50,474 INFO L158 Benchmark]: Boogie Preprocessor took 68.57ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 68.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:50,474 INFO L158 Benchmark]: RCFGBuilder took 621.30ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 46.3MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:22:50,475 INFO L158 Benchmark]: TraceAbstraction took 19113.17ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 45.5MB in the beginning and 890.2MB in the end (delta: -844.6MB). Peak memory consumption was 461.7MB. Max. memory is 16.1GB. [2024-11-28 03:22:50,475 INFO L158 Benchmark]: Witness Printer took 91.17ms. Allocated memory is still 1.4GB. Free memory was 890.2MB in the beginning and 884.6MB in the end (delta: 5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:22:50,477 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 72.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 599.47ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 71.6MB in the end (delta: 19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.75ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 69.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.57ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 68.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 621.30ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 46.3MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19113.17ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 45.5MB in the beginning and 890.2MB in the end (delta: -844.6MB). Peak memory consumption was 461.7MB. Max. memory is 16.1GB. * Witness Printer took 91.17ms. Allocated memory is still 1.4GB. Free memory was 890.2MB in the beginning and 884.6MB in the end (delta: 5.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.0s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1780 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1730 mSDsluCounter, 603 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 580 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2981 IncrementalHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 23 mSDtfsCounter, 2981 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1137occurred in iteration=12, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 499 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 677 ConstructedInterpolants, 0 QuantifiedInterpolants, 1767 SizeOfPredicates, 42 NumberOfNonLiveVariables, 770 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 1006/1376 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:22:50,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a2f0fd-8fd3-458c-ada6-b281d784b8ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE