./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:50:28,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:50:28,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:50:28,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:50:28,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:50:28,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:50:28,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:50:28,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:50:28,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:50:28,493 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:50:28,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:50:28,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:50:28,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:50:28,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:50:28,494 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:50:28,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:50:28,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:50:28,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:50:28,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:50:28,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:50:28,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:50:28,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:50:28,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:50:28,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:50:28,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:50:28,502 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:50:28,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:50:28,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:50:28,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:50:28,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:50:28,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:50:28,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:50:28,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:50:28,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:50:28,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:28,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:50:28,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:50:28,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:50:28,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:50:28,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:50:28,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:50:28,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:50:28,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:50:28,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:50:28,508 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-23 01:50:28,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:50:28,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:50:28,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:50:28,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:50:28,774 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:50:28,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-23 01:50:30,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:50:30,485 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:50:30,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-23 01:50:30,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2e8705b/f4796311d52e4af685937e47523ff9de/FLAGb692f9b91 [2024-11-23 01:50:30,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2e8705b/f4796311d52e4af685937e47523ff9de [2024-11-23 01:50:30,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:50:30,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:50:30,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:30,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:50:30,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:50:30,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:30" (1/1) ... [2024-11-23 01:50:30,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b38c3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:30, skipping insertion in model container [2024-11-23 01:50:30,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:30" (1/1) ... [2024-11-23 01:50:30,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:50:31,026 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,026 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,027 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,027 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:31,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:50:31,165 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,168 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,168 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,169 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:31,290 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:50:31,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31 WrapperNode [2024-11-23 01:50:31,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:31,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:31,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:50:31,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:50:31,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,353 INFO L138 Inliner]: procedures = 274, calls = 98, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 202 [2024-11-23 01:50:31,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:31,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:50:31,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:50:31,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:50:31,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,397 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-23 01:50:31,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:50:31,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:50:31,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:50:31,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:50:31,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:31,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:50:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:50:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-23 01:50:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-23 01:50:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 01:50:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 01:50:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:50:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:50:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:50:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:50:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:50:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:50:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 01:50:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:50:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:50:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:50:31,521 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:50:31,666 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:50:31,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:50:32,032 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:50:32,033 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:50:32,579 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:50:32,580 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:50:32,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:32 BoogieIcfgContainer [2024-11-23 01:50:32,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:50:32,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:50:32,584 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:50:32,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:50:32,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:30" (1/3) ... [2024-11-23 01:50:32,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6a6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:32, skipping insertion in model container [2024-11-23 01:50:32,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (2/3) ... [2024-11-23 01:50:32,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6a6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:32, skipping insertion in model container [2024-11-23 01:50:32,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:32" (3/3) ... [2024-11-23 01:50:32,590 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2024-11-23 01:50:32,606 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:50:32,607 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-23 01:50:32,607 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:50:32,669 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:50:32,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2024-11-23 01:50:32,740 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-11-23 01:50:32,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:32,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-23 01:50:32,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2024-11-23 01:50:32,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2024-11-23 01:50:32,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:50:32,770 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;@6c4854a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:50:32,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-23 01:50:32,777 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:50:32,777 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-11-23 01:50:32,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:32,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:32,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:50:32,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:32,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 16751997, now seen corresponding path program 1 times [2024-11-23 01:50:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938509536] [2024-11-23 01:50:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:50:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030952446] [2024-11-23 01:50:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:32,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:32,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:32,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:50:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:33,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:50:33,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:33,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938509536] [2024-11-23 01:50:33,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:50:33,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030952446] [2024-11-23 01:50:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030952446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:50:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763094303] [2024-11-23 01:50:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:33,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:50:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:50:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:50:33,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-23 01:50:33,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:33,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:33,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-23 01:50:33,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:33,589 INFO L124 PetriNetUnfolderBase]: 303/696 cut-off events. [2024-11-23 01:50:33,590 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 01:50:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 696 events. 303/696 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3654 event pairs, 224 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 1162. Up to 490 conditions per place. [2024-11-23 01:50:33,601 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-23 01:50:33,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2024-11-23 01:50:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:50:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:50:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-23 01:50:33,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-11-23 01:50:33,615 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-11-23 01:50:33,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2024-11-23 01:50:33,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:33,621 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2024-11-23 01:50:33,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-23 01:50:33,629 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-11-23 01:50:33,629 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2024-11-23 01:50:33,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:33,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:33,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:50:33,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:50:33,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 01:50:33,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:33,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 16752016, now seen corresponding path program 1 times [2024-11-23 01:50:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309824100] [2024-11-23 01:50:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:33,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309824100] [2024-11-23 01:50:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309824100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:33,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9356805] [2024-11-23 01:50:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:33,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:50:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:50:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:50:34,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-23 01:50:34,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:34,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:34,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-23 01:50:34,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:34,267 INFO L124 PetriNetUnfolderBase]: 303/710 cut-off events. [2024-11-23 01:50:34,267 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 01:50:34,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 710 events. 303/710 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3748 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1203. Up to 495 conditions per place. [2024-11-23 01:50:34,274 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-23 01:50:34,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2024-11-23 01:50:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:50:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:50:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-23 01:50:34,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-11-23 01:50:34,277 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2024-11-23 01:50:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2024-11-23 01:50:34,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:34,279 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2024-11-23 01:50:34,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-23 01:50:34,281 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-23 01:50:34,282 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2024-11-23 01:50:34,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:34,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:34,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:50:34,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:50:34,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:34,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1081183509, now seen corresponding path program 1 times [2024-11-23 01:50:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256104978] [2024-11-23 01:50:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256104978] [2024-11-23 01:50:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256104978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:34,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:34,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653199873] [2024-11-23 01:50:34,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:34,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:34,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:34,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:34,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-23 01:50:34,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:34,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:34,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:34,764 INFO L124 PetriNetUnfolderBase]: 303/706 cut-off events. [2024-11-23 01:50:34,764 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-23 01:50:34,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 706 events. 303/706 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3724 event pairs, 224 based on Foata normal form. 4/599 useless extension candidates. Maximal degree in co-relation 1190. Up to 499 conditions per place. [2024-11-23 01:50:34,768 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-23 01:50:34,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 222 flow [2024-11-23 01:50:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-23 01:50:34,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-11-23 01:50:34,773 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 127 transitions. [2024-11-23 01:50:34,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 222 flow [2024-11-23 01:50:34,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:34,776 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-11-23 01:50:34,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-11-23 01:50:34,778 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-23 01:50:34,778 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-11-23 01:50:34,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-23 01:50:34,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:34,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:34,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:50:34,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:34,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1577657604, now seen corresponding path program 1 times [2024-11-23 01:50:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:34,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748112410] [2024-11-23 01:50:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:34,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:34,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748112410] [2024-11-23 01:50:34,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748112410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:34,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911531842] [2024-11-23 01:50:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:34,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:34,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:34,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:34,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:50:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:35,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:50:35,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:35,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:35,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911531842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:35,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:35,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-23 01:50:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409846533] [2024-11-23 01:50:35,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:35,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:35,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:35,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:35,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:35,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-11-23 01:50:35,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:35,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:35,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:35,765 INFO L124 PetriNetUnfolderBase]: 303/722 cut-off events. [2024-11-23 01:50:35,765 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-23 01:50:35,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 722 events. 303/722 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3828 event pairs, 224 based on Foata normal form. 6/617 useless extension candidates. Maximal degree in co-relation 1209. Up to 489 conditions per place. [2024-11-23 01:50:35,770 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-23 01:50:35,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 284 flow [2024-11-23 01:50:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:50:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:50:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-11-23 01:50:35,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2024-11-23 01:50:35,773 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 9 states and 238 transitions. [2024-11-23 01:50:35,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 284 flow [2024-11-23 01:50:35,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:35,777 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 210 flow [2024-11-23 01:50:35,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-23 01:50:35,778 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:35,778 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 210 flow [2024-11-23 01:50:35,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-11-23 01:50:35,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:35,778 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:35,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:35,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-23 01:50:35,980 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:35,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash -5503657, now seen corresponding path program 1 times [2024-11-23 01:50:35,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:35,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13605358] [2024-11-23 01:50:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13605358] [2024-11-23 01:50:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13605358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245854087] [2024-11-23 01:50:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:36,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:36,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:36,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:50:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:36,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:50:36,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:36,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:36,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245854087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:36,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:36,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:50:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055667343] [2024-11-23 01:50:36,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:36,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:36,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:36,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:36,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:36,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:36,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:36,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:36,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:36,819 INFO L124 PetriNetUnfolderBase]: 303/718 cut-off events. [2024-11-23 01:50:36,820 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-23 01:50:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 718 events. 303/718 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3789 event pairs, 224 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1226. Up to 487 conditions per place. [2024-11-23 01:50:36,824 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 31 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-11-23 01:50:36,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 274 flow [2024-11-23 01:50:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:50:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:50:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-23 01:50:36,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-23 01:50:36,825 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 210 flow. Second operand 6 states and 169 transitions. [2024-11-23 01:50:36,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 274 flow [2024-11-23 01:50:36,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 266 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:36,829 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 204 flow [2024-11-23 01:50:36,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-11-23 01:50:36,831 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:36,832 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 204 flow [2024-11-23 01:50:36,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:36,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:36,833 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2024-11-23 01:50:36,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:50:37,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:37,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:37,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1960986382, now seen corresponding path program 1 times [2024-11-23 01:50:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8526773] [2024-11-23 01:50:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 01:50:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8526773] [2024-11-23 01:50:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8526773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:37,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445278188] [2024-11-23 01:50:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:37,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:37,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-11-23 01:50:37,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-23 01:50:37,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:37,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-11-23 01:50:37,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:37,495 INFO L124 PetriNetUnfolderBase]: 303/716 cut-off events. [2024-11-23 01:50:37,495 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-23 01:50:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 716 events. 303/716 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3791 event pairs, 224 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1232. Up to 493 conditions per place. [2024-11-23 01:50:37,501 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-11-23 01:50:37,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 280 flow [2024-11-23 01:50:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-23 01:50:37,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-23 01:50:37,503 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 204 flow. Second operand 4 states and 126 transitions. [2024-11-23 01:50:37,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 280 flow [2024-11-23 01:50:37,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-23 01:50:37,506 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 212 flow [2024-11-23 01:50:37,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-23 01:50:37,508 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-11-23 01:50:37,509 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 212 flow [2024-11-23 01:50:37,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-23 01:50:37,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:37,510 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-23 01:50:37,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:50:37,510 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:37,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 982747004, now seen corresponding path program 2 times [2024-11-23 01:50:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961424614] [2024-11-23 01:50:37,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:37,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:37,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 01:50:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:37,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961424614] [2024-11-23 01:50:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961424614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:37,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:50:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940111842] [2024-11-23 01:50:37,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:37,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:37,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:37,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:37,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-23 01:50:37,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:37,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:37,928 INFO L124 PetriNetUnfolderBase]: 303/714 cut-off events. [2024-11-23 01:50:37,929 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-23 01:50:37,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 714 events. 303/714 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3788 event pairs, 224 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1214. Up to 498 conditions per place. [2024-11-23 01:50:37,933 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-23 01:50:37,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 380 flow [2024-11-23 01:50:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-23 01:50:37,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-23 01:50:37,936 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 212 flow. Second operand 4 states and 130 transitions. [2024-11-23 01:50:37,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 380 flow [2024-11-23 01:50:37,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 356 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:37,941 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 223 flow [2024-11-23 01:50:37,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-23 01:50:37,942 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:37,942 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 223 flow [2024-11-23 01:50:37,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-23 01:50:37,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:37,942 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:37,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:50:37,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:37,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash 363156185, now seen corresponding path program 1 times [2024-11-23 01:50:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316133946] [2024-11-23 01:50:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316133946] [2024-11-23 01:50:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316133946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708866037] [2024-11-23 01:50:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:38,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:38,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:50:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:38,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:50:38,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:38,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:38,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708866037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:38,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-23 01:50:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248954322] [2024-11-23 01:50:38,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:38,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:50:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:50:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:50:38,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:38,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 223 flow. Second operand has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-11-23 01:50:38,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:38,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:38,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:39,646 INFO L124 PetriNetUnfolderBase]: 303/762 cut-off events. [2024-11-23 01:50:39,646 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-11-23 01:50:39,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 762 events. 303/762 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3823 event pairs, 224 based on Foata normal form. 8/661 useless extension candidates. Maximal degree in co-relation 1355. Up to 489 conditions per place. [2024-11-23 01:50:39,651 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 50 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-11-23 01:50:39,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 515 flow [2024-11-23 01:50:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:50:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:50:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 382 transitions. [2024-11-23 01:50:39,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2024-11-23 01:50:39,655 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 223 flow. Second operand 15 states and 382 transitions. [2024-11-23 01:50:39,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 515 flow [2024-11-23 01:50:39,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:39,660 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 353 flow [2024-11-23 01:50:39,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=353, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-11-23 01:50:39,660 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-11-23 01:50:39,660 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 353 flow [2024-11-23 01:50:39,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-11-23 01:50:39,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:39,662 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:39,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:50:39,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:39,866 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:39,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 50657753, now seen corresponding path program 2 times [2024-11-23 01:50:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:39,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231566539] [2024-11-23 01:50:39,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:39,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:40,040 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:40,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231566539] [2024-11-23 01:50:40,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231566539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549902937] [2024-11-23 01:50:40,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:40,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:40,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:40,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:40,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:50:41,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:41,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:41,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 01:50:41,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:41,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549902937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:41,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-23 01:50:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119342267] [2024-11-23 01:50:41,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:41,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 01:50:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 01:50:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 01:50:41,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:41,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 353 flow. Second operand has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-11-23 01:50:41,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:41,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:41,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:43,108 INFO L124 PetriNetUnfolderBase]: 303/858 cut-off events. [2024-11-23 01:50:43,108 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-11-23 01:50:43,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 858 events. 303/858 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3862 event pairs, 224 based on Foata normal form. 16/765 useless extension candidates. Maximal degree in co-relation 1621. Up to 489 conditions per place. [2024-11-23 01:50:43,113 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 74 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-11-23 01:50:43,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 1027 flow [2024-11-23 01:50:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 01:50:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-23 01:50:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 762 transitions. [2024-11-23 01:50:43,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4312393887945671 [2024-11-23 01:50:43,116 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 353 flow. Second operand 31 states and 762 transitions. [2024-11-23 01:50:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 1027 flow [2024-11-23 01:50:43,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 993 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:43,125 INFO L231 Difference]: Finished difference. Result has 125 places, 87 transitions, 625 flow [2024-11-23 01:50:43,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=87} [2024-11-23 01:50:43,126 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-11-23 01:50:43,126 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 87 transitions, 625 flow [2024-11-23 01:50:43,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-11-23 01:50:43,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:43,127 INFO L204 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:43,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:43,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:43,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:43,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1317550119, now seen corresponding path program 3 times [2024-11-23 01:50:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444947133] [2024-11-23 01:50:43,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:52,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-23 01:50:52,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:54,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:54,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444947133] [2024-11-23 01:50:54,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444947133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:54,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458703539] [2024-11-23 01:50:54,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:54,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:54,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:54,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:54,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:50:55,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 01:50:55,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:55,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 01:50:55,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 2 proven. 108 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-23 01:50:55,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:51:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-23 01:51:05,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458703539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:51:05,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:51:05,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5, 5] total 43 [2024-11-23 01:51:05,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981473358] [2024-11-23 01:51:05,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:51:05,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-23 01:51:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-23 01:51:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1482, Unknown=3, NotChecked=0, Total=1806 [2024-11-23 01:51:09,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:51:13,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:51:17,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:51:21,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:51:25,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:51:25,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-23 01:51:25,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 87 transitions, 625 flow. Second operand has 43 states, 43 states have (on average 18.86046511627907) internal successors, (811), 43 states have internal predecessors, (811), 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) [2024-11-23 01:51:25,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:25,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-23 01:51:25,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:30,852 INFO L124 PetriNetUnfolderBase]: 304/972 cut-off events. [2024-11-23 01:51:30,852 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-11-23 01:51:30,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 972 events. 304/972 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3900 event pairs, 224 based on Foata normal form. 35/898 useless extension candidates. Maximal degree in co-relation 2219. Up to 492 conditions per place. [2024-11-23 01:51:30,861 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 209 selfloop transitions, 121 changer transitions 0/344 dead transitions. [2024-11-23 01:51:30,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 344 transitions, 3186 flow [2024-11-23 01:51:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-23 01:51:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2024-11-23 01:51:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 2237 transitions. [2024-11-23 01:51:30,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33543259859049335 [2024-11-23 01:51:30,870 INFO L175 Difference]: Start difference. First operand has 125 places, 87 transitions, 625 flow. Second operand 117 states and 2237 transitions. [2024-11-23 01:51:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 344 transitions, 3186 flow [2024-11-23 01:51:30,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 344 transitions, 3108 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-23 01:51:30,888 INFO L231 Difference]: Finished difference. Result has 262 places, 179 transitions, 1962 flow [2024-11-23 01:51:30,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=1962, PETRI_PLACES=262, PETRI_TRANSITIONS=179} [2024-11-23 01:51:30,890 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 206 predicate places. [2024-11-23 01:51:30,890 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 179 transitions, 1962 flow [2024-11-23 01:51:30,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 18.86046511627907) internal successors, (811), 43 states have internal predecessors, (811), 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) [2024-11-23 01:51:30,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:30,891 INFO L204 CegarLoopForPetriNet]: trace histogram [32, 32, 32, 32, 32, 2, 2, 1, 1, 1, 1] [2024-11-23 01:51:30,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:51:31,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:51:31,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:51:31,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1109513292, now seen corresponding path program 1 times [2024-11-23 01:51:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402317294] [2024-11-23 01:51:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:51:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:51:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2547 backedges. 1314 proven. 616 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-23 01:51:34,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:34,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402317294] [2024-11-23 01:51:34,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402317294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:51:34,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756929360] [2024-11-23 01:51:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:51:34,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:51:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:51:34,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:51:34,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:51:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:51:35,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 01:51:35,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:51:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2547 backedges. 1314 proven. 616 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-23 01:51:35,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:51:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2547 backedges. 1314 proven. 616 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-23 01:51:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756929360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:51:36,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:51:36,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 63 [2024-11-23 01:51:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56736832] [2024-11-23 01:51:36,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:51:36,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-23 01:51:36,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-23 01:51:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 01:51:36,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:51:36,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 179 transitions, 1962 flow. Second operand has 63 states, 63 states have (on average 22.61904761904762) internal successors, (1425), 63 states have internal predecessors, (1425), 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) [2024-11-23 01:51:36,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:36,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:51:36,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:39,902 INFO L124 PetriNetUnfolderBase]: 304/1209 cut-off events. [2024-11-23 01:51:39,902 INFO L125 PetriNetUnfolderBase]: For 27825/27825 co-relation queries the response was YES. [2024-11-23 01:51:39,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6171 conditions, 1209 events. 304/1209 cut-off events. For 27825/27825 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3921 event pairs, 224 based on Foata normal form. 42/1142 useless extension candidates. Maximal degree in co-relation 4798. Up to 492 conditions per place. [2024-11-23 01:51:39,916 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 123 selfloop transitions, 181 changer transitions 0/339 dead transitions. [2024-11-23 01:51:39,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 339 transitions, 6225 flow [2024-11-23 01:51:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-23 01:51:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-23 01:51:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1473 transitions. [2024-11-23 01:51:39,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42364106988783434 [2024-11-23 01:51:39,920 INFO L175 Difference]: Start difference. First operand has 262 places, 179 transitions, 1962 flow. Second operand 61 states and 1473 transitions. [2024-11-23 01:51:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 339 transitions, 6225 flow [2024-11-23 01:51:40,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 339 transitions, 5921 flow, removed 66 selfloop flow, removed 30 redundant places. [2024-11-23 01:51:40,051 INFO L231 Difference]: Finished difference. Result has 307 places, 258 transitions, 3429 flow [2024-11-23 01:51:40,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=3429, PETRI_PLACES=307, PETRI_TRANSITIONS=258} [2024-11-23 01:51:40,052 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 251 predicate places. [2024-11-23 01:51:40,052 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 258 transitions, 3429 flow [2024-11-23 01:51:40,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 22.61904761904762) internal successors, (1425), 63 states have internal predecessors, (1425), 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) [2024-11-23 01:51:40,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:40,053 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 47, 46, 46, 46, 2, 1, 1, 1, 1, 1] [2024-11-23 01:51:40,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 01:51:40,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:51:40,260 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:51:40,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash 838066692, now seen corresponding path program 1 times [2024-11-23 01:51:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996902684] [2024-11-23 01:51:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:51:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms