./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.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_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/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_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/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_0e51139b-427d-4869-948b-84bed061bb29/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 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:49:46,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:49:46,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:49:46,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:49:46,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:49:46,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:49:46,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:49:46,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:49:46,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:49:46,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:49:46,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:49:46,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:49:46,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:49:46,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:49:46,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:49:46,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:49:46,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:49:46,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:49:46,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:49:46,237 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:46,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:46,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:46,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:49:46,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:49:46,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:49:46,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:49:46,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:49:46,239 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_0e51139b-427d-4869-948b-84bed061bb29/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 -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2024-11-28 02:49:46,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:49:46,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:49:46,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:49:46,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:49:46,589 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:49:46,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-11-28 02:49:49,577 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/data/99f531cd4/2edba68470414984b2c835af9c1d6b0a/FLAG5be535dd0 [2024-11-28 02:49:49,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:49:49,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-11-28 02:49:49,974 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/data/99f531cd4/2edba68470414984b2c835af9c1d6b0a/FLAG5be535dd0 [2024-11-28 02:49:50,145 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/data/99f531cd4/2edba68470414984b2c835af9c1d6b0a [2024-11-28 02:49:50,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:49:50,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:49:50,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:50,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:49:50,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:49:50,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:50,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552cbd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50, skipping insertion in model container [2024-11-28 02:49:50,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:50,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:49:50,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:50,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:49:50,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:50,934 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:49:50,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50 WrapperNode [2024-11-28 02:49:50,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:50,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:50,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:49:50,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:49:50,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:50,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:50,985 INFO L138 Inliner]: procedures = 162, calls = 58, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2024-11-28 02:49:50,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:50,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:49:50,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:49:50,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:49:51,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,033 INFO L175 MemorySlicer]: Split 50 memory accesses to 1 slices as follows [50]. 100 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [50]. The 0 writes are split as follows [0]. [2024-11-28 02:49:51,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,048 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:49:51,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:49:51,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:49:51,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:49:51,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (1/1) ... [2024-11-28 02:49:51,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:51,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:51,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:49:51,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:49:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:49:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:49:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:49:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:49:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:49:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:49:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:49:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:49:51,160 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 02:49:51,302 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:49:51,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:49:51,612 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:49:51,612 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:49:52,054 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:49:52,055 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:49:52,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:52 BoogieIcfgContainer [2024-11-28 02:49:52,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:49:52,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:49:52,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:49:52,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:49:52,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:49:50" (1/3) ... [2024-11-28 02:49:52,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b011162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:52, skipping insertion in model container [2024-11-28 02:49:52,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:50" (2/3) ... [2024-11-28 02:49:52,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b011162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:52, skipping insertion in model container [2024-11-28 02:49:52,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:52" (3/3) ... [2024-11-28 02:49:52,074 INFO L128 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2024-11-28 02:49:52,093 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:49:52,095 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 05-lval_ls_02-idx_nr.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-28 02:49:52,096 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:49:52,150 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:49:52,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-11-28 02:49:52,250 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-28 02:49:52,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:49:52,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-28 02:49:52,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-11-28 02:49:52,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-11-28 02:49:52,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:49:52,328 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;@66dfa48a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:49:52,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 02:49:52,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:49:52,337 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 02:49:52,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:49:52,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:52,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:49:52,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:52,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 261710, now seen corresponding path program 1 times [2024-11-28 02:49:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417244053] [2024-11-28 02:49:52,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:52,834 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 02:49:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417244053] [2024-11-28 02:49:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417244053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:52,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:52,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720071850] [2024-11-28 02:49:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:52,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:49:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:52,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:49:52,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:49:52,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:52,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 02:49:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:52,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:53,085 INFO L124 PetriNetUnfolderBase]: 31/104 cut-off events. [2024-11-28 02:49:53,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:49:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 104 events. 31/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 30 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 164. Up to 79 conditions per place. [2024-11-28 02:49:53,088 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 17 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-28 02:49:53,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 99 flow [2024-11-28 02:49:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:49:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:49:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-28 02:49:53,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-28 02:49:53,114 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 59 transitions. [2024-11-28 02:49:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 99 flow [2024-11-28 02:49:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:49:53,124 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-11-28 02:49:53,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-28 02:49:53,131 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-28 02:49:53,132 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-11-28 02:49:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 02:49:53,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:53,133 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:49:53,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:49:53,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:53,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash -793068350, now seen corresponding path program 1 times [2024-11-28 02:49:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:53,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799024862] [2024-11-28 02:49:53,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:53,362 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 02:49:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799024862] [2024-11-28 02:49:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799024862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387712990] [2024-11-28 02:49:53,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:53,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:53,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:53,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:49:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:53,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:49:53,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:53,585 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 02:49:53,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387712990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:49:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094963675] [2024-11-28 02:49:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:53,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:53,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:53,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:49:53,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:53,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 02:49:53,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:53,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:53,829 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2024-11-28 02:49:53,830 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:49:53,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 103 events. 31/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 181. Up to 74 conditions per place. [2024-11-28 02:49:53,832 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 13 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-11-28 02:49:53,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 112 flow [2024-11-28 02:49:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:49:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:49:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-28 02:49:53,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-11-28 02:49:53,836 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 74 transitions. [2024-11-28 02:49:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 112 flow [2024-11-28 02:49:53,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:49:53,838 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-11-28 02:49:53,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-28 02:49:53,842 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-28 02:49:53,844 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-11-28 02:49:53,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 02:49:53,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:53,844 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 02:49:53,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:49:54,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:54,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1184685192, now seen corresponding path program 1 times [2024-11-28 02:49:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897932202] [2024-11-28 02:49:54,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:49:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897932202] [2024-11-28 02:49:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897932202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:54,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:54,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507473966] [2024-11-28 02:49:54,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:54,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:49:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:54,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:49:54,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:49:54,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:54,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:49:54,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:54,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:54,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:54,324 INFO L124 PetriNetUnfolderBase]: 31/102 cut-off events. [2024-11-28 02:49:54,324 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:49:54,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 102 events. 31/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 343 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 177. Up to 77 conditions per place. [2024-11-28 02:49:54,325 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-28 02:49:54,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 116 flow [2024-11-28 02:49:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:49:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:49:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-28 02:49:54,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-11-28 02:49:54,328 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 44 transitions. [2024-11-28 02:49:54,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 116 flow [2024-11-28 02:49:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 94 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 02:49:54,330 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-28 02:49:54,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-28 02:49:54,334 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-28 02:49:54,334 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-28 02:49:54,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:49:54,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:54,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:54,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:49:54,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:54,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1260306727, now seen corresponding path program 1 times [2024-11-28 02:49:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596355656] [2024-11-28 02:49:54,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:54,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596355656] [2024-11-28 02:49:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596355656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549645222] [2024-11-28 02:49:54,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:54,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:54,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:54,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:54,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:49:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:54,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:49:54,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:54,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549645222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:54,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 02:49:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444657513] [2024-11-28 02:49:54,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:54,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:49:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:54,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:49:54,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:49:54,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:54,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:54,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:54,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:54,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:54,916 INFO L124 PetriNetUnfolderBase]: 31/106 cut-off events. [2024-11-28 02:49:54,916 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-28 02:49:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 106 events. 31/106 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 340 event pairs, 30 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 170. Up to 75 conditions per place. [2024-11-28 02:49:54,917 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 14 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-11-28 02:49:54,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 123 flow [2024-11-28 02:49:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:49:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:49:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-28 02:49:54,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-11-28 02:49:54,920 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 86 transitions. [2024-11-28 02:49:54,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 123 flow [2024-11-28 02:49:54,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:49:54,921 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-11-28 02:49:54,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-28 02:49:54,922 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-28 02:49:54,922 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-11-28 02:49:54,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:54,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:54,923 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:54,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:49:55,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:55,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:55,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1400842841, now seen corresponding path program 2 times [2024-11-28 02:49:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:55,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582856515] [2024-11-28 02:49:55,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:55,153 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:49:55,154 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:49:55,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582856515] [2024-11-28 02:49:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582856515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:55,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203663960] [2024-11-28 02:49:55,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:55,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:49:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:55,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:49:55,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:49:55,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:55,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:49:55,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:55,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:55,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:55,331 INFO L124 PetriNetUnfolderBase]: 37/115 cut-off events. [2024-11-28 02:49:55,332 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:49:55,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 115 events. 37/115 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 16 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 196. Up to 67 conditions per place. [2024-11-28 02:49:55,335 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 4 changer transitions 6/42 dead transitions. [2024-11-28 02:49:55,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 190 flow [2024-11-28 02:49:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:49:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-28 02:49:55,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-28 02:49:55,344 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 5 states and 80 transitions. [2024-11-28 02:49:55,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 190 flow [2024-11-28 02:49:55,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:49:55,347 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 113 flow [2024-11-28 02:49:55,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-11-28 02:49:55,348 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-11-28 02:49:55,348 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 113 flow [2024-11-28 02:49:55,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:49:55,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:55,348 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:55,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:49:55,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:55,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1400638277, now seen corresponding path program 1 times [2024-11-28 02:49:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35460766] [2024-11-28 02:49:55,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:49:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35460766] [2024-11-28 02:49:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35460766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:55,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494291670] [2024-11-28 02:49:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:55,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:49:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:55,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:49:55,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:49:55,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:55,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:49:55,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:55,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:55,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:55,600 INFO L124 PetriNetUnfolderBase]: 24/96 cut-off events. [2024-11-28 02:49:55,600 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-28 02:49:55,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 96 events. 24/96 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 11 based on Foata normal form. 14/109 useless extension candidates. Maximal degree in co-relation 202. Up to 45 conditions per place. [2024-11-28 02:49:55,601 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 4 changer transitions 4/40 dead transitions. [2024-11-28 02:49:55,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 208 flow [2024-11-28 02:49:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:49:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-11-28 02:49:55,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-28 02:49:55,604 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 113 flow. Second operand 5 states and 78 transitions. [2024-11-28 02:49:55,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 208 flow [2024-11-28 02:49:55,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 200 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:49:55,606 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 131 flow [2024-11-28 02:49:55,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2024-11-28 02:49:55,607 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-11-28 02:49:55,607 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 131 flow [2024-11-28 02:49:55,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:49:55,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:55,608 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:55,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:49:55,608 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:55,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2144263264, now seen corresponding path program 1 times [2024-11-28 02:49:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:55,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664084085] [2024-11-28 02:49:55,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:49:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664084085] [2024-11-28 02:49:55,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664084085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:55,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:49:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901935221] [2024-11-28 02:49:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:55,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:49:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:55,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:49:55,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:49:55,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2024-11-28 02:49:55,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 02:49:55,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:55,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2024-11-28 02:49:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:55,826 INFO L124 PetriNetUnfolderBase]: 10/62 cut-off events. [2024-11-28 02:49:55,826 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 02:49:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 62 events. 10/62 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 2 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 142. Up to 24 conditions per place. [2024-11-28 02:49:55,827 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 22 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-11-28 02:49:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 189 flow [2024-11-28 02:49:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:49:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:49:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-28 02:49:55,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:49:55,829 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 131 flow. Second operand 3 states and 54 transitions. [2024-11-28 02:49:55,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 189 flow [2024-11-28 02:49:55,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 182 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:49:55,832 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 132 flow [2024-11-28 02:49:55,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-11-28 02:49:55,833 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-11-28 02:49:55,833 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 132 flow [2024-11-28 02:49:55,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 02:49:55,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:55,833 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:55,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:49:55,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:55,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 735286759, now seen corresponding path program 1 times [2024-11-28 02:49:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822542024] [2024-11-28 02:49:55,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822542024] [2024-11-28 02:49:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822542024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748346815] [2024-11-28 02:49:56,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:56,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:56,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:49:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:56,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:49:56,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:56,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:56,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748346815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:56,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 02:49:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824003798] [2024-11-28 02:49:56,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:56,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:49:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:56,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:49:56,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:49:56,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:56,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 132 flow. Second operand has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 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 02:49:56,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:56,648 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-11-28 02:49:56,650 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-28 02:49:56,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 74 events. 10/74 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 9 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 145. Up to 37 conditions per place. [2024-11-28 02:49:56,652 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2024-11-28 02:49:56,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 242 flow [2024-11-28 02:49:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:49:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 02:49:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 168 transitions. [2024-11-28 02:49:56,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-11-28 02:49:56,656 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 132 flow. Second operand 15 states and 168 transitions. [2024-11-28 02:49:56,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 242 flow [2024-11-28 02:49:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 39 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:49:56,661 INFO L231 Difference]: Finished difference. Result has 62 places, 39 transitions, 225 flow [2024-11-28 02:49:56,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=225, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2024-11-28 02:49:56,662 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-11-28 02:49:56,662 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions, 225 flow [2024-11-28 02:49:56,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 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 02:49:56,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:56,663 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:56,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:49:56,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:56,870 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:56,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1175396633, now seen corresponding path program 2 times [2024-11-28 02:49:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:56,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371245831] [2024-11-28 02:49:56,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:56,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:56,893 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:49:56,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 02:49:57,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371245831] [2024-11-28 02:49:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371245831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:57,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:57,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738642749] [2024-11-28 02:49:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:57,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:57,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:57,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:57,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 02:49:57,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:57,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:57,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 02:49:57,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:57,198 INFO L124 PetriNetUnfolderBase]: 13/75 cut-off events. [2024-11-28 02:49:57,198 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-28 02:49:57,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 75 events. 13/75 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 7 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 164. Up to 26 conditions per place. [2024-11-28 02:49:57,200 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 33 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-11-28 02:49:57,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 42 transitions, 307 flow [2024-11-28 02:49:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:49:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:49:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-28 02:49:57,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-11-28 02:49:57,202 INFO L175 Difference]: Start difference. First operand has 62 places, 39 transitions, 225 flow. Second operand 6 states and 68 transitions. [2024-11-28 02:49:57,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 42 transitions, 307 flow [2024-11-28 02:49:57,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 42 transitions, 297 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:49:57,207 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 221 flow [2024-11-28 02:49:57,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2024-11-28 02:49:57,208 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-11-28 02:49:57,208 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 221 flow [2024-11-28 02:49:57,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:57,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:57,209 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:57,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:49:57,209 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:57,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash -642706907, now seen corresponding path program 1 times [2024-11-28 02:49:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:57,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295769453] [2024-11-28 02:49:57,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:57,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295769453] [2024-11-28 02:49:57,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295769453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:57,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650588188] [2024-11-28 02:49:57,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:57,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:57,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:57,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:49:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:57,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:49:57,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:57,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:58,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650588188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:58,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:58,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-28 02:49:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707127122] [2024-11-28 02:49:58,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:58,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:49:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:58,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:49:58,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:49:58,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 02:49:58,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 221 flow. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 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 02:49:58,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:58,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 02:49:58,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:58,505 INFO L124 PetriNetUnfolderBase]: 10/81 cut-off events. [2024-11-28 02:49:58,505 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-28 02:49:58,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 81 events. 10/81 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 9 based on Foata normal form. 3/83 useless extension candidates. Maximal degree in co-relation 198. Up to 37 conditions per place. [2024-11-28 02:49:58,506 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 21 changer transitions 0/44 dead transitions. [2024-11-28 02:49:58,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 44 transitions, 349 flow [2024-11-28 02:49:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:49:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:49:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 227 transitions. [2024-11-28 02:49:58,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.400352733686067 [2024-11-28 02:49:58,508 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 221 flow. Second operand 21 states and 227 transitions. [2024-11-28 02:49:58,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 44 transitions, 349 flow [2024-11-28 02:49:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 44 transitions, 337 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:49:58,515 INFO L231 Difference]: Finished difference. Result has 81 places, 44 transitions, 320 flow [2024-11-28 02:49:58,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=320, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2024-11-28 02:49:58,515 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-11-28 02:49:58,515 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 320 flow [2024-11-28 02:49:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 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 02:49:58,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:58,517 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:58,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:49:58,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:49:58,722 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:58,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2047565647, now seen corresponding path program 2 times [2024-11-28 02:49:58,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:58,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700913503] [2024-11-28 02:49:58,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:58,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:49:58,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 02:49:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700913503] [2024-11-28 02:49:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700913503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:58,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:58,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966336113] [2024-11-28 02:49:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:58,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:58,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:58,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:58,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 02:49:58,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:58,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:58,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 02:49:58,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:59,005 INFO L124 PetriNetUnfolderBase]: 12/81 cut-off events. [2024-11-28 02:49:59,007 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-28 02:49:59,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 81 events. 12/81 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 5 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 221. Up to 30 conditions per place. [2024-11-28 02:49:59,008 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 39 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-11-28 02:49:59,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 48 transitions, 416 flow [2024-11-28 02:49:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:49:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:49:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-28 02:49:59,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-11-28 02:49:59,010 INFO L175 Difference]: Start difference. First operand has 81 places, 44 transitions, 320 flow. Second operand 6 states and 68 transitions. [2024-11-28 02:49:59,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 48 transitions, 416 flow [2024-11-28 02:49:59,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 48 transitions, 373 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-28 02:49:59,017 INFO L231 Difference]: Finished difference. Result has 72 places, 43 transitions, 283 flow [2024-11-28 02:49:59,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=72, PETRI_TRANSITIONS=43} [2024-11-28 02:49:59,018 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-11-28 02:49:59,018 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 43 transitions, 283 flow [2024-11-28 02:49:59,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:59,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:59,018 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:59,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:49:59,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:59,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2043267816, now seen corresponding path program 1 times [2024-11-28 02:49:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:59,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331159833] [2024-11-28 02:49:59,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 02:49:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331159833] [2024-11-28 02:49:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331159833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:59,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:59,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127095037] [2024-11-28 02:49:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:59,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:59,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:59,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:59,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 02:49:59,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 43 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:59,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:59,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 02:49:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:59,401 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2024-11-28 02:49:59,402 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-11-28 02:49:59,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 78 events. 11/78 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 5 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 207. Up to 29 conditions per place. [2024-11-28 02:49:59,403 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 3 changer transitions 8/47 dead transitions. [2024-11-28 02:49:59,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 47 transitions, 377 flow [2024-11-28 02:49:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:49:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:49:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-28 02:49:59,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-11-28 02:49:59,404 INFO L175 Difference]: Start difference. First operand has 72 places, 43 transitions, 283 flow. Second operand 7 states and 74 transitions. [2024-11-28 02:49:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 47 transitions, 377 flow [2024-11-28 02:49:59,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 47 transitions, 363 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 02:49:59,408 INFO L231 Difference]: Finished difference. Result has 72 places, 37 transitions, 251 flow [2024-11-28 02:49:59,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=72, PETRI_TRANSITIONS=37} [2024-11-28 02:49:59,409 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-11-28 02:49:59,409 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 37 transitions, 251 flow [2024-11-28 02:49:59,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:59,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:59,410 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:59,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:49:59,410 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-28 02:49:59,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:59,411 INFO L85 PathProgramCache]: Analyzing trace with hash 949974645, now seen corresponding path program 1 times [2024-11-28 02:49:59,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182162140] [2024-11-28 02:49:59,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:59,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 02:49:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:59,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182162140] [2024-11-28 02:49:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182162140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:59,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109298499] [2024-11-28 02:49:59,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:59,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:59,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:59,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:59,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 02:49:59,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 37 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:59,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:59,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 02:49:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:59,694 INFO L124 PetriNetUnfolderBase]: 8/62 cut-off events. [2024-11-28 02:49:59,694 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-28 02:49:59,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 62 events. 8/62 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 2 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 203. Up to 29 conditions per place. [2024-11-28 02:49:59,695 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2024-11-28 02:49:59,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 40 transitions, 328 flow [2024-11-28 02:49:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:49:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:49:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-28 02:49:59,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-11-28 02:49:59,696 INFO L175 Difference]: Start difference. First operand has 72 places, 37 transitions, 251 flow. Second operand 6 states and 60 transitions. [2024-11-28 02:49:59,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 40 transitions, 328 flow [2024-11-28 02:49:59,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 40 transitions, 316 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:49:59,699 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-11-28 02:49:59,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-11-28 02:49:59,700 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-11-28 02:49:59,700 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-11-28 02:49:59,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 02:49:59,703 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-11-28 02:49:59,704 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-28 02:49:59,704 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-28 02:49:59,704 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-28 02:49:59,704 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-11-28 02:49:59,704 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-28 02:49:59,705 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-28 02:49:59,705 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-28 02:49:59,705 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-28 02:49:59,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:49:59,705 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:59,712 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:49:59,712 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:49:59,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:49:59 BasicIcfg [2024-11-28 02:49:59,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:49:59,720 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:49:59,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:49:59,720 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:49:59,721 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:52" (3/4) ... [2024-11-28 02:49:59,723 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:49:59,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-28 02:49:59,731 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2024-11-28 02:49:59,731 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 02:49:59,732 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 02:49:59,830 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:49:59,831 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:49:59,831 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:49:59,833 INFO L158 Benchmark]: Toolchain (without parser) took 9682.63ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 93.8MB in the beginning and 91.5MB in the end (delta: 2.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-11-28 02:49:59,833 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:49:59,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 784.88ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 72.5MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:49:59,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.45ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:49:59,835 INFO L158 Benchmark]: Boogie Preprocessor took 77.31ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:49:59,836 INFO L158 Benchmark]: RCFGBuilder took 991.68ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 51.8MB in the end (delta: 16.8MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2024-11-28 02:49:59,837 INFO L158 Benchmark]: TraceAbstraction took 7658.59ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 51.2MB in the beginning and 97.4MB in the end (delta: -46.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:49:59,837 INFO L158 Benchmark]: Witness Printer took 111.60ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 91.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:49:59,840 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 784.88ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 72.5MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.45ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.31ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 68.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 991.68ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 51.8MB in the end (delta: 16.8MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7658.59ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 51.2MB in the beginning and 97.4MB in the end (delta: -46.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 111.60ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 91.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: 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 3 procedures, 38 locations, 9 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: 7.5s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 260 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1028 IncrementalHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 22 mSDtfsCounter, 1028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=10, InterpolantAutomatonStates: 94, 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, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 372 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1060 SizeOfPredicates, 13 NumberOfNonLiveVariables, 737 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 546/797 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 02:49:59,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e51139b-427d-4869-948b-84bed061bb29/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