./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/pthread/fib_unsafe-5.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 e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:32:43,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:32:43,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:32:43,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:32:43,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:32:43,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:32:43,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:32:43,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:32:43,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:32:43,639 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:32:43,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:32:43,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:32:43,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:32:43,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:32:43,641 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:32:43,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:32:43,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:32:43,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:32:43,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:32:43,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:32:43,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:32:43,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:32:43,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:32:43,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:32:43,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:32:43,647 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:32:43,647 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:32:43,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:32:43,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:32:43,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:32:43,648 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:32:43,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:32:43,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:32:43,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:32:43,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:43,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:32:43,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:32:43,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:32:43,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:32:43,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:32:43,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:32:43,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:32:43,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:32:43,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:32:43,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2024-11-17 07:32:43,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:32:43,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:32:43,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:32:43,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:32:43,923 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:32:43,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-17 07:32:45,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:32:45,610 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:32:45,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-17 07:32:45,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb5b370e/9e3a7286fa4f45649b68fd97a8a2abd7/FLAG61ce6a5f0 [2024-11-17 07:32:45,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb5b370e/9e3a7286fa4f45649b68fd97a8a2abd7 [2024-11-17 07:32:45,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:32:45,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:32:45,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:45,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:32:45,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:32:45,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:45" (1/1) ... [2024-11-17 07:32:45,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be3b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:45, skipping insertion in model container [2024-11-17 07:32:45,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:45" (1/1) ... [2024-11-17 07:32:45,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:32:46,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:46,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:32:46,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:46,166 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:32:46,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46 WrapperNode [2024-11-17 07:32:46,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:46,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:46,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:32:46,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:32:46,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,208 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-17 07:32:46,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:46,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:32:46,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:32:46,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:32:46,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,245 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 07:32:46,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,255 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:32:46,264 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:32:46,267 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:32:46,267 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:32:46,268 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (1/1) ... [2024-11-17 07:32:46,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:46,304 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) [2024-11-17 07:32:46,307 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 [2024-11-17 07:32:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:32:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:32:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:32:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:32:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:32:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:32:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:32:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:32:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:32:46,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:32:46,353 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:32:46,503 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:32:46,506 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:32:46,674 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:32:46,675 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:32:46,796 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:32:46,797 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:32:46,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:46 BoogieIcfgContainer [2024-11-17 07:32:46,798 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:32:46,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:32:46,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:32:46,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:32:46,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:32:45" (1/3) ... [2024-11-17 07:32:46,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4050b344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:46, skipping insertion in model container [2024-11-17 07:32:46,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:46" (2/3) ... [2024-11-17 07:32:46,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4050b344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:46, skipping insertion in model container [2024-11-17 07:32:46,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:46" (3/3) ... [2024-11-17 07:32:46,808 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2024-11-17 07:32:46,823 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:32:46,824 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-17 07:32:46,824 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:32:46,877 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:32:46,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-17 07:32:46,943 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-17 07:32:46,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:32:46,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-17 07:32:46,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-17 07:32:46,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-17 07:32:46,959 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:32:46,964 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;@63bb9bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:32:46,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-17 07:32:46,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:32:46,970 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-17 07:32:46,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:32:46,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:46,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:46,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:46,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1890733871, now seen corresponding path program 1 times [2024-11-17 07:32:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:46,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772497411] [2024-11-17 07:32:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:47,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772497411] [2024-11-17 07:32:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772497411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:47,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022406353] [2024-11-17 07:32:47,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:47,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:47,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:47,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 07:32:47,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:47,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:47,692 INFO L124 PetriNetUnfolderBase]: 785/1644 cut-off events. [2024-11-17 07:32:47,693 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 07:32:47,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 1644 events. 785/1644 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11249 event pairs, 188 based on Foata normal form. 230/1468 useless extension candidates. Maximal degree in co-relation 2839. Up to 612 conditions per place. [2024-11-17 07:32:47,713 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-17 07:32:47,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 271 flow [2024-11-17 07:32:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-17 07:32:47,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2024-11-17 07:32:47,727 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 167 transitions. [2024-11-17 07:32:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 271 flow [2024-11-17 07:32:47,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:47,732 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 131 flow [2024-11-17 07:32:47,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-17 07:32:47,737 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-17 07:32:47,737 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 131 flow [2024-11-17 07:32:47,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 07:32:47,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:47,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:47,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:32:47,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:47,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:47,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1287009838, now seen corresponding path program 1 times [2024-11-17 07:32:47,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:47,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703319424] [2024-11-17 07:32:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:47,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:47,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:47,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703319424] [2024-11-17 07:32:47,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703319424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:47,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:47,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:32:47,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612108181] [2024-11-17 07:32:47,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:47,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:32:47,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:47,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:32:47,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:32:47,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-17 07:32:47,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:47,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:47,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-17 07:32:47,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:48,219 INFO L124 PetriNetUnfolderBase]: 1553/3036 cut-off events. [2024-11-17 07:32:48,219 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-17 07:32:48,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 3036 events. 1553/3036 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23089 event pairs, 486 based on Foata normal form. 56/2383 useless extension candidates. Maximal degree in co-relation 6293. Up to 1409 conditions per place. [2024-11-17 07:32:48,239 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-17 07:32:48,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 287 flow [2024-11-17 07:32:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:32:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:32:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-17 07:32:48,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-17 07:32:48,241 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-11-17 07:32:48,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 287 flow [2024-11-17 07:32:48,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:32:48,244 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 145 flow [2024-11-17 07:32:48,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-17 07:32:48,247 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-17 07:32:48,247 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 145 flow [2024-11-17 07:32:48,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:48,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:48,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:48,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:32:48,248 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:48,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -224073259, now seen corresponding path program 1 times [2024-11-17 07:32:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158546105] [2024-11-17 07:32:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158546105] [2024-11-17 07:32:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158546105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442091218] [2024-11-17 07:32:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:48,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:48,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:48,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:48,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:48,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:48,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-17 07:32:48,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:48,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:48,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:48,691 INFO L124 PetriNetUnfolderBase]: 1867/3280 cut-off events. [2024-11-17 07:32:48,692 INFO L125 PetriNetUnfolderBase]: For 550/708 co-relation queries the response was YES. [2024-11-17 07:32:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 3280 events. 1867/3280 cut-off events. For 550/708 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22453 event pairs, 453 based on Foata normal form. 143/2828 useless extension candidates. Maximal degree in co-relation 7285. Up to 1719 conditions per place. [2024-11-17 07:32:48,717 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-17 07:32:48,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 377 flow [2024-11-17 07:32:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-17 07:32:48,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-11-17 07:32:48,722 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 145 flow. Second operand 4 states and 149 transitions. [2024-11-17 07:32:48,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 377 flow [2024-11-17 07:32:48,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:32:48,729 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2024-11-17 07:32:48,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-17 07:32:48,730 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-17 07:32:48,731 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2024-11-17 07:32:48,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-11-17 07:32:48,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:48,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:48,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:32:48,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:48,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 134132928, now seen corresponding path program 1 times [2024-11-17 07:32:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808594956] [2024-11-17 07:32:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:48,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808594956] [2024-11-17 07:32:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808594956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:48,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:48,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712276567] [2024-11-17 07:32:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:48,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:48,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:32:48,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-17 07:32:48,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:48,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:32:48,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:49,075 INFO L124 PetriNetUnfolderBase]: 1381/2687 cut-off events. [2024-11-17 07:32:49,076 INFO L125 PetriNetUnfolderBase]: For 657/845 co-relation queries the response was YES. [2024-11-17 07:32:49,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 2687 events. 1381/2687 cut-off events. For 657/845 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19821 event pairs, 159 based on Foata normal form. 179/2399 useless extension candidates. Maximal degree in co-relation 6053. Up to 1551 conditions per place. [2024-11-17 07:32:49,094 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-17 07:32:49,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 415 flow [2024-11-17 07:32:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 07:32:49,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-17 07:32:49,096 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 4 states and 145 transitions. [2024-11-17 07:32:49,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 415 flow [2024-11-17 07:32:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:32:49,099 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 185 flow [2024-11-17 07:32:49,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-17 07:32:49,100 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-17 07:32:49,100 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 185 flow [2024-11-17 07:32:49,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-17 07:32:49,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:49,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:49,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:32:49,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:49,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1279990136, now seen corresponding path program 1 times [2024-11-17 07:32:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591161976] [2024-11-17 07:32:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591161976] [2024-11-17 07:32:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591161976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002531031] [2024-11-17 07:32:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:49,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:49,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:49,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-17 07:32:49,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:49,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:49,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:49,560 INFO L124 PetriNetUnfolderBase]: 2225/3891 cut-off events. [2024-11-17 07:32:49,560 INFO L125 PetriNetUnfolderBase]: For 1992/2810 co-relation queries the response was YES. [2024-11-17 07:32:49,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 3891 events. 2225/3891 cut-off events. For 1992/2810 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28024 event pairs, 457 based on Foata normal form. 261/3540 useless extension candidates. Maximal degree in co-relation 9590. Up to 2241 conditions per place. [2024-11-17 07:32:49,593 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-17 07:32:49,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 459 flow [2024-11-17 07:32:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 07:32:49,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-17 07:32:49,596 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 185 flow. Second operand 4 states and 145 transitions. [2024-11-17 07:32:49,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 459 flow [2024-11-17 07:32:49,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:49,601 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 205 flow [2024-11-17 07:32:49,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-11-17 07:32:49,603 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-17 07:32:49,604 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 205 flow [2024-11-17 07:32:49,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-17 07:32:49,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:49,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:49,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:32:49,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -47953521, now seen corresponding path program 1 times [2024-11-17 07:32:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445210442] [2024-11-17 07:32:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445210442] [2024-11-17 07:32:49,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445210442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:49,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736206576] [2024-11-17 07:32:49,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:49,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:49,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:49,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:49,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:49,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:49,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:50,040 INFO L124 PetriNetUnfolderBase]: 1279/2649 cut-off events. [2024-11-17 07:32:50,041 INFO L125 PetriNetUnfolderBase]: For 1134/1629 co-relation queries the response was YES. [2024-11-17 07:32:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 2649 events. 1279/2649 cut-off events. For 1134/1629 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19011 event pairs, 183 based on Foata normal form. 80/2418 useless extension candidates. Maximal degree in co-relation 6626. Up to 954 conditions per place. [2024-11-17 07:32:50,059 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-17 07:32:50,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 503 flow [2024-11-17 07:32:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-17 07:32:50,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-17 07:32:50,061 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 205 flow. Second operand 5 states and 190 transitions. [2024-11-17 07:32:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 503 flow [2024-11-17 07:32:50,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:32:50,068 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 227 flow [2024-11-17 07:32:50,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-17 07:32:50,070 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-17 07:32:50,070 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 227 flow [2024-11-17 07:32:50,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:50,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:50,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:32:50,071 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:50,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526994, now seen corresponding path program 1 times [2024-11-17 07:32:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:50,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394983122] [2024-11-17 07:32:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:50,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:50,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394983122] [2024-11-17 07:32:50,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394983122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:50,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:50,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:50,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592774180] [2024-11-17 07:32:50,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:50,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:50,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:50,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:50,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:50,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:50,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:50,461 INFO L124 PetriNetUnfolderBase]: 1331/2831 cut-off events. [2024-11-17 07:32:50,461 INFO L125 PetriNetUnfolderBase]: For 1783/2226 co-relation queries the response was YES. [2024-11-17 07:32:50,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 2831 events. 1331/2831 cut-off events. For 1783/2226 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20944 event pairs, 255 based on Foata normal form. 130/2866 useless extension candidates. Maximal degree in co-relation 7364. Up to 1260 conditions per place. [2024-11-17 07:32:50,480 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-17 07:32:50,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 531 flow [2024-11-17 07:32:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:50,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-17 07:32:50,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-11-17 07:32:50,482 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 227 flow. Second operand 5 states and 191 transitions. [2024-11-17 07:32:50,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 531 flow [2024-11-17 07:32:50,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:50,487 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 252 flow [2024-11-17 07:32:50,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=5, PETRI_FLOW=252, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-17 07:32:50,488 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-17 07:32:50,488 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 252 flow [2024-11-17 07:32:50,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:50,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:50,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:32:50,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:50,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667573, now seen corresponding path program 1 times [2024-11-17 07:32:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374470618] [2024-11-17 07:32:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374470618] [2024-11-17 07:32:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374470618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133649916] [2024-11-17 07:32:50,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:50,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:50,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:50,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:50,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:50,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:50,808 INFO L124 PetriNetUnfolderBase]: 1187/2615 cut-off events. [2024-11-17 07:32:50,809 INFO L125 PetriNetUnfolderBase]: For 2211/2602 co-relation queries the response was YES. [2024-11-17 07:32:50,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7057 conditions, 2615 events. 1187/2615 cut-off events. For 2211/2602 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19349 event pairs, 303 based on Foata normal form. 120/2672 useless extension candidates. Maximal degree in co-relation 7024. Up to 1384 conditions per place. [2024-11-17 07:32:50,858 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-17 07:32:50,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 466 flow [2024-11-17 07:32:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-17 07:32:50,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641509433962264 [2024-11-17 07:32:50,860 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 252 flow. Second operand 5 states and 176 transitions. [2024-11-17 07:32:50,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 466 flow [2024-11-17 07:32:50,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 451 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:50,866 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 253 flow [2024-11-17 07:32:50,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-17 07:32:50,868 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-17 07:32:50,868 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 253 flow [2024-11-17 07:32:50,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:50,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:50,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:32:50,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:50,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667574, now seen corresponding path program 1 times [2024-11-17 07:32:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14991110] [2024-11-17 07:32:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:50,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14991110] [2024-11-17 07:32:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14991110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:50,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098133911] [2024-11-17 07:32:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:50,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:50,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:50,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:50,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:50,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:50,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:51,220 INFO L124 PetriNetUnfolderBase]: 1235/2735 cut-off events. [2024-11-17 07:32:51,220 INFO L125 PetriNetUnfolderBase]: For 2633/3028 co-relation queries the response was YES. [2024-11-17 07:32:51,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 2735 events. 1235/2735 cut-off events. For 2633/3028 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20411 event pairs, 295 based on Foata normal form. 112/2832 useless extension candidates. Maximal degree in co-relation 7376. Up to 1400 conditions per place. [2024-11-17 07:32:51,239 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-17 07:32:51,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 535 flow [2024-11-17 07:32:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-17 07:32:51,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-17 07:32:51,241 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 253 flow. Second operand 5 states and 187 transitions. [2024-11-17 07:32:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 535 flow [2024-11-17 07:32:51,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:32:51,246 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 275 flow [2024-11-17 07:32:51,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-17 07:32:51,247 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-17 07:32:51,247 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 275 flow [2024-11-17 07:32:51,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-17 07:32:51,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:51,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:51,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:32:51,248 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:51,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -864154063, now seen corresponding path program 1 times [2024-11-17 07:32:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642051081] [2024-11-17 07:32:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642051081] [2024-11-17 07:32:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642051081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:51,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831988307] [2024-11-17 07:32:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:51,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:51,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:51,322 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) [2024-11-17 07:32:51,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:32:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:51,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:32:51,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:51,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:51,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831988307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:51,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:51,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-17 07:32:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878130275] [2024-11-17 07:32:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:51,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:32:51,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-17 07:32:51,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 07:32:51,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:51,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-17 07:32:51,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:51,770 INFO L124 PetriNetUnfolderBase]: 1235/2790 cut-off events. [2024-11-17 07:32:51,771 INFO L125 PetriNetUnfolderBase]: For 3989/4333 co-relation queries the response was YES. [2024-11-17 07:32:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 2790 events. 1235/2790 cut-off events. For 3989/4333 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21767 event pairs, 187 based on Foata normal form. 191/2948 useless extension candidates. Maximal degree in co-relation 7651. Up to 1444 conditions per place. [2024-11-17 07:32:51,789 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-17 07:32:51,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 521 flow [2024-11-17 07:32:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-17 07:32:51,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-17 07:32:51,790 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 275 flow. Second operand 4 states and 135 transitions. [2024-11-17 07:32:51,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 521 flow [2024-11-17 07:32:51,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:51,795 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 264 flow [2024-11-17 07:32:51,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-17 07:32:51,797 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-17 07:32:51,797 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 264 flow [2024-11-17 07:32:51,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 07:32:51,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:51,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:51,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:32:52,002 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,SelfDestructingSolverStorable9 [2024-11-17 07:32:52,003 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:52,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1531728658, now seen corresponding path program 1 times [2024-11-17 07:32:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89771110] [2024-11-17 07:32:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89771110] [2024-11-17 07:32:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89771110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282549442] [2024-11-17 07:32:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:52,069 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) [2024-11-17 07:32:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:32:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:52,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:52,170 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:52,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282549442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:52,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:52,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:32:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789338858] [2024-11-17 07:32:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:52,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:32:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:32:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:52,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:52,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 264 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) [2024-11-17 07:32:52,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:52,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:52,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:52,603 INFO L124 PetriNetUnfolderBase]: 1837/3355 cut-off events. [2024-11-17 07:32:52,603 INFO L125 PetriNetUnfolderBase]: For 5060/5552 co-relation queries the response was YES. [2024-11-17 07:32:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3355 events. 1837/3355 cut-off events. For 5060/5552 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23327 event pairs, 375 based on Foata normal form. 133/3370 useless extension candidates. Maximal degree in co-relation 10017. Up to 1466 conditions per place. [2024-11-17 07:32:52,624 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 91 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-11-17 07:32:52,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 693 flow [2024-11-17 07:32:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-17 07:32:52,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-17 07:32:52,627 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 264 flow. Second operand 6 states and 201 transitions. [2024-11-17 07:32:52,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 693 flow [2024-11-17 07:32:52,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:52,633 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 267 flow [2024-11-17 07:32:52,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-17 07:32:52,634 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-17 07:32:52,634 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 267 flow [2024-11-17 07:32:52,634 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) [2024-11-17 07:32:52,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:52,635 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:52,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:32:52,835 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,SelfDestructingSolverStorable10 [2024-11-17 07:32:52,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:52,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1018971992, now seen corresponding path program 1 times [2024-11-17 07:32:52,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:52,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908003920] [2024-11-17 07:32:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:52,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908003920] [2024-11-17 07:32:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908003920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622711840] [2024-11-17 07:32:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:52,902 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) [2024-11-17 07:32:52,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:32:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:32:52,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:53,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:32:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:53,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622711840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:32:53,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:32:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-17 07:32:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579428817] [2024-11-17 07:32:53,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:32:53,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:32:53,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:32:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:53,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-17 07:32:53,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-17 07:32:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-17 07:32:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:53,849 INFO L124 PetriNetUnfolderBase]: 3515/7488 cut-off events. [2024-11-17 07:32:53,850 INFO L125 PetriNetUnfolderBase]: For 11263/12014 co-relation queries the response was YES. [2024-11-17 07:32:53,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20802 conditions, 7488 events. 3515/7488 cut-off events. For 11263/12014 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 64597 event pairs, 187 based on Foata normal form. 174/7553 useless extension candidates. Maximal degree in co-relation 20768. Up to 1445 conditions per place. [2024-11-17 07:32:53,896 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 135 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-17 07:32:53,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1093 flow [2024-11-17 07:32:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-17 07:32:53,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-17 07:32:53,898 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 267 flow. Second operand 6 states and 231 transitions. [2024-11-17 07:32:53,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1093 flow [2024-11-17 07:32:53,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 162 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:53,905 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 298 flow [2024-11-17 07:32:53,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-17 07:32:53,906 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-17 07:32:53,906 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 298 flow [2024-11-17 07:32:53,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-17 07:32:53,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:53,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:53,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:32:54,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:54,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:54,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash -238947900, now seen corresponding path program 1 times [2024-11-17 07:32:54,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:54,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353524729] [2024-11-17 07:32:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:54,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:32:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353524729] [2024-11-17 07:32:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353524729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727149960] [2024-11-17 07:32:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:54,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:54,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-17 07:32:54,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 298 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) [2024-11-17 07:32:54,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:54,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-17 07:32:54,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:55,137 INFO L124 PetriNetUnfolderBase]: 5489/9683 cut-off events. [2024-11-17 07:32:55,138 INFO L125 PetriNetUnfolderBase]: For 16145/17818 co-relation queries the response was YES. [2024-11-17 07:32:55,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29537 conditions, 9683 events. 5489/9683 cut-off events. For 16145/17818 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 74904 event pairs, 2581 based on Foata normal form. 452/9884 useless extension candidates. Maximal degree in co-relation 29500. Up to 4789 conditions per place. [2024-11-17 07:32:55,191 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 83 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-17 07:32:55,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 698 flow [2024-11-17 07:32:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-17 07:32:55,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2024-11-17 07:32:55,193 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 298 flow. Second operand 4 states and 138 transitions. [2024-11-17 07:32:55,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 698 flow [2024-11-17 07:32:55,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 672 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:55,208 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 302 flow [2024-11-17 07:32:55,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-17 07:32:55,209 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-17 07:32:55,209 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 302 flow [2024-11-17 07:32:55,210 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) [2024-11-17 07:32:55,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:55,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:55,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:32:55,210 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:55,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1523360417, now seen corresponding path program 1 times [2024-11-17 07:32:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:55,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583425024] [2024-11-17 07:32:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583425024] [2024-11-17 07:32:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583425024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943310754] [2024-11-17 07:32:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:55,265 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) [2024-11-17 07:32:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:32:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:55,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:55,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:55,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943310754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:32:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531546567] [2024-11-17 07:32:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:55,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:32:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:32:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:55,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:32:55,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-17 07:32:55,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:55,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:32:55,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:56,116 INFO L124 PetriNetUnfolderBase]: 4427/8158 cut-off events. [2024-11-17 07:32:56,116 INFO L125 PetriNetUnfolderBase]: For 16976/17692 co-relation queries the response was YES. [2024-11-17 07:32:56,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24824 conditions, 8158 events. 4427/8158 cut-off events. For 16976/17692 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 64137 event pairs, 187 based on Foata normal form. 450/8347 useless extension candidates. Maximal degree in co-relation 24786. Up to 4560 conditions per place. [2024-11-17 07:32:56,162 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 100 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-17 07:32:56,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 901 flow [2024-11-17 07:32:56,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-17 07:32:56,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-17 07:32:56,164 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 302 flow. Second operand 6 states and 198 transitions. [2024-11-17 07:32:56,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 901 flow [2024-11-17 07:32:56,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 887 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:32:56,183 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 306 flow [2024-11-17 07:32:56,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=62} [2024-11-17 07:32:56,184 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:32:56,184 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 306 flow [2024-11-17 07:32:56,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-17 07:32:56,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:56,184 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:56,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:32:56,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:56,385 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:56,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1241379951, now seen corresponding path program 1 times [2024-11-17 07:32:56,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438915948] [2024-11-17 07:32:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:56,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438915948] [2024-11-17 07:32:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438915948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:56,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248340541] [2024-11-17 07:32:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:56,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:56,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:56,445 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) [2024-11-17 07:32:56,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:32:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:56,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:56,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:56,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248340541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:32:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634180149] [2024-11-17 07:32:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:56,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:32:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:32:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:56,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:56,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 62 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-17 07:32:56,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:56,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:56,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:57,341 INFO L124 PetriNetUnfolderBase]: 4991/8868 cut-off events. [2024-11-17 07:32:57,342 INFO L125 PetriNetUnfolderBase]: For 17348/17719 co-relation queries the response was YES. [2024-11-17 07:32:57,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27871 conditions, 8868 events. 4991/8868 cut-off events. For 17348/17719 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 68817 event pairs, 1021 based on Foata normal form. 198/8671 useless extension candidates. Maximal degree in co-relation 27832. Up to 3938 conditions per place. [2024-11-17 07:32:57,403 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 97 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-17 07:32:57,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 837 flow [2024-11-17 07:32:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-11-17 07:32:57,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-11-17 07:32:57,405 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 306 flow. Second operand 6 states and 195 transitions. [2024-11-17 07:32:57,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 837 flow [2024-11-17 07:32:57,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 823 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:57,425 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 307 flow [2024-11-17 07:32:57,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-17 07:32:57,426 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-17 07:32:57,426 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 307 flow [2024-11-17 07:32:57,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-17 07:32:57,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:57,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:57,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:32:57,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:32:57,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:57,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash 20467549, now seen corresponding path program 1 times [2024-11-17 07:32:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:57,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580004204] [2024-11-17 07:32:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:32:57,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580004204] [2024-11-17 07:32:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580004204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825261879] [2024-11-17 07:32:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:57,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:57,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:57,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-17 07:32:57,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:57,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:57,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:58,295 INFO L124 PetriNetUnfolderBase]: 4731/8336 cut-off events. [2024-11-17 07:32:58,296 INFO L125 PetriNetUnfolderBase]: For 18507/18761 co-relation queries the response was YES. [2024-11-17 07:32:58,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 8336 events. 4731/8336 cut-off events. For 18507/18761 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 63011 event pairs, 802 based on Foata normal form. 228/8486 useless extension candidates. Maximal degree in co-relation 26824. Up to 4561 conditions per place. [2024-11-17 07:32:58,360 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 78 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-17 07:32:58,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 741 flow [2024-11-17 07:32:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-17 07:32:58,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-11-17 07:32:58,362 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 307 flow. Second operand 4 states and 137 transitions. [2024-11-17 07:32:58,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 741 flow [2024-11-17 07:32:58,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 730 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:32:58,388 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 320 flow [2024-11-17 07:32:58,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-17 07:32:58,389 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:32:58,389 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 320 flow [2024-11-17 07:32:58,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-17 07:32:58,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:58,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:58,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:32:58,389 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:58,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash 171927439, now seen corresponding path program 1 times [2024-11-17 07:32:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391104332] [2024-11-17 07:32:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:32:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391104332] [2024-11-17 07:32:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391104332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:58,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:58,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799302496] [2024-11-17 07:32:58,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:58,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:58,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-17 07:32:58,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:58,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:58,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-17 07:32:58,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:59,187 INFO L124 PetriNetUnfolderBase]: 5475/9279 cut-off events. [2024-11-17 07:32:59,187 INFO L125 PetriNetUnfolderBase]: For 20142/20230 co-relation queries the response was YES. [2024-11-17 07:32:59,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30628 conditions, 9279 events. 5475/9279 cut-off events. For 20142/20230 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 69918 event pairs, 2605 based on Foata normal form. 198/9229 useless extension candidates. Maximal degree in co-relation 30589. Up to 4793 conditions per place. [2024-11-17 07:32:59,229 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-17 07:32:59,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 734 flow [2024-11-17 07:32:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-17 07:32:59,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-17 07:32:59,231 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 320 flow. Second operand 4 states and 134 transitions. [2024-11-17 07:32:59,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 734 flow [2024-11-17 07:32:59,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 692 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:59,253 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 318 flow [2024-11-17 07:32:59,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-17 07:32:59,254 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:32:59,254 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 318 flow [2024-11-17 07:32:59,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:59,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:59,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:59,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 07:32:59,254 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:32:59,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash -196956509, now seen corresponding path program 1 times [2024-11-17 07:32:59,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:59,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715952966] [2024-11-17 07:32:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:59,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715952966] [2024-11-17 07:32:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715952966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76599548] [2024-11-17 07:32:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:59,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:59,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:59,322 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) [2024-11-17 07:32:59,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:32:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:59,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:59,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:32:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76599548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:32:59,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:32:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-17 07:32:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784613692] [2024-11-17 07:32:59,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:32:59,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:32:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:32:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:32:59,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:59,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 318 flow. Second operand has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-17 07:32:59,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:59,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:59,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:02,665 INFO L124 PetriNetUnfolderBase]: 13739/28619 cut-off events. [2024-11-17 07:33:02,666 INFO L125 PetriNetUnfolderBase]: For 68452/68755 co-relation queries the response was YES. [2024-11-17 07:33:02,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90937 conditions, 28619 events. 13739/28619 cut-off events. For 68452/68755 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 282988 event pairs, 417 based on Foata normal form. 1762/30344 useless extension candidates. Maximal degree in co-relation 90897. Up to 5133 conditions per place. [2024-11-17 07:33:02,855 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 418 selfloop transitions, 71 changer transitions 0/510 dead transitions. [2024-11-17 07:33:02,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 510 transitions, 3786 flow [2024-11-17 07:33:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 07:33:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 07:33:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1070 transitions. [2024-11-17 07:33:02,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210242587601078 [2024-11-17 07:33:02,859 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 318 flow. Second operand 28 states and 1070 transitions. [2024-11-17 07:33:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 510 transitions, 3786 flow [2024-11-17 07:33:02,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 510 transitions, 3748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:33:02,925 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1178 flow [2024-11-17 07:33:02,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1178, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-17 07:33:02,926 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-11-17 07:33:02,926 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1178 flow [2024-11-17 07:33:02,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-17 07:33:02,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:02,927 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:02,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:33:03,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:33:03,132 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:33:03,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 218461820, now seen corresponding path program 1 times [2024-11-17 07:33:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622446219] [2024-11-17 07:33:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:03,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622446219] [2024-11-17 07:33:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622446219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798151396] [2024-11-17 07:33:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:03,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:03,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:03,222 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) [2024-11-17 07:33:03,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:33:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:03,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:33:03,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:03,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:03,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798151396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:03,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:03,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-17 07:33:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094985248] [2024-11-17 07:33:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:03,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:33:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:33:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:33:03,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:03,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-17 07:33:03,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:03,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:06,348 INFO L124 PetriNetUnfolderBase]: 11473/24751 cut-off events. [2024-11-17 07:33:06,348 INFO L125 PetriNetUnfolderBase]: For 232706/232959 co-relation queries the response was YES. [2024-11-17 07:33:06,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96524 conditions, 24751 events. 11473/24751 cut-off events. For 232706/232959 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 247636 event pairs, 2025 based on Foata normal form. 2024/26586 useless extension candidates. Maximal degree in co-relation 96465. Up to 8330 conditions per place. [2024-11-17 07:33:06,591 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-11-17 07:33:06,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1389 flow [2024-11-17 07:33:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:33:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:33:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-17 07:33:06,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-11-17 07:33:06,592 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1178 flow. Second operand 6 states and 206 transitions. [2024-11-17 07:33:06,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1389 flow [2024-11-17 07:33:07,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1148 flow, removed 99 selfloop flow, removed 12 redundant places. [2024-11-17 07:33:07,216 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 715 flow [2024-11-17 07:33:07,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-17 07:33:07,217 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-17 07:33:07,217 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 715 flow [2024-11-17 07:33:07,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-17 07:33:07,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:07,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:07,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:07,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:07,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:33:07,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1715647968, now seen corresponding path program 1 times [2024-11-17 07:33:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270772406] [2024-11-17 07:33:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:07,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270772406] [2024-11-17 07:33:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270772406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181245407] [2024-11-17 07:33:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:07,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:07,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:33:07,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:33:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:07,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:33:07,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:07,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181245407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:07,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-17 07:33:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855888597] [2024-11-17 07:33:07,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:07,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:33:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:33:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:33:07,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:07,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 715 flow. Second operand has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-17 07:33:07,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:07,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:07,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:12,654 INFO L124 PetriNetUnfolderBase]: 16225/35787 cut-off events. [2024-11-17 07:33:12,654 INFO L125 PetriNetUnfolderBase]: For 306718/307081 co-relation queries the response was YES. [2024-11-17 07:33:12,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127896 conditions, 35787 events. 16225/35787 cut-off events. For 306718/307081 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 378209 event pairs, 659 based on Foata normal form. 1108/36792 useless extension candidates. Maximal degree in co-relation 127841. Up to 9039 conditions per place. [2024-11-17 07:33:13,006 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 322 selfloop transitions, 54 changer transitions 0/397 dead transitions. [2024-11-17 07:33:13,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3141 flow [2024-11-17 07:33:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:33:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:33:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 775 transitions. [2024-11-17 07:33:13,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6963162623539982 [2024-11-17 07:33:13,009 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 715 flow. Second operand 21 states and 775 transitions. [2024-11-17 07:33:13,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3141 flow [2024-11-17 07:33:13,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 397 transitions, 3124 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-17 07:33:13,596 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1104 flow [2024-11-17 07:33:13,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1104, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-17 07:33:13,596 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-17 07:33:13,596 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1104 flow [2024-11-17 07:33:13,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-17 07:33:13,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:13,597 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:13,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:33:13,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:13,798 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:33:13,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash -552312867, now seen corresponding path program 1 times [2024-11-17 07:33:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326120117] [2024-11-17 07:33:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326120117] [2024-11-17 07:33:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326120117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735767486] [2024-11-17 07:33:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:13,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:13,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:33:13,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:33:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:13,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:33:13,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:14,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:14,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735767486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:14,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-17 07:33:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727291703] [2024-11-17 07:33:14,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:14,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 07:33:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 07:33:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-17 07:33:14,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:14,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1104 flow. Second operand has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-17 07:33:14,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:14,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:14,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:24,071 INFO L124 PetriNetUnfolderBase]: 30701/69095 cut-off events. [2024-11-17 07:33:24,072 INFO L125 PetriNetUnfolderBase]: For 1102364/1103054 co-relation queries the response was YES. [2024-11-17 07:33:24,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248729 conditions, 69095 events. 30701/69095 cut-off events. For 1102364/1103054 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 799901 event pairs, 1517 based on Foata normal form. 3652/72710 useless extension candidates. Maximal degree in co-relation 248668. Up to 8063 conditions per place. [2024-11-17 07:33:24,821 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 555 selfloop transitions, 118 changer transitions 0/694 dead transitions. [2024-11-17 07:33:24,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 694 transitions, 5913 flow [2024-11-17 07:33:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-17 07:33:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-17 07:33:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1378 transitions. [2024-11-17 07:33:24,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-17 07:33:24,825 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1104 flow. Second operand 37 states and 1378 transitions. [2024-11-17 07:33:24,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 694 transitions, 5913 flow [2024-11-17 07:33:27,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 694 transitions, 5771 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-17 07:33:27,242 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2103 flow [2024-11-17 07:33:27,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2103, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-17 07:33:27,242 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-17 07:33:27,243 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2103 flow [2024-11-17 07:33:27,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-17 07:33:27,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:27,243 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:27,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:27,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:27,445 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-17 07:33:27,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -25267541, now seen corresponding path program 2 times [2024-11-17 07:33:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143499221] [2024-11-17 07:33:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143499221] [2024-11-17 07:33:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143499221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828468665] [2024-11-17 07:33:27,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:33:27,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:27,574 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:33:27,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:33:27,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:33:27,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:33:27,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 07:33:27,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:27,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828468665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:27,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-17 07:33:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894246612] [2024-11-17 07:33:27,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:27,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:33:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:33:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:33:27,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:33:27,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2103 flow. Second operand has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 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) [2024-11-17 07:33:27,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:27,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:33:27,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand