./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-6.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-6.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 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:32:47,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:32:47,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:32:47,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:32:47,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:32:47,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:32:47,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:32:47,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:32:47,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:32:47,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:32:47,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:32:47,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:32:47,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:32:47,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:32:47,288 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:32:47,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:32:47,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:32:47,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:32:47,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:32:47,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:32:47,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:32:47,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:32:47,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:32:47,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:32:47,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:32:47,294 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:32:47,294 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:32:47,294 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:32:47,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:32:47,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:32:47,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:32:47,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:32:47,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:32:47,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:32:47,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:47,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:32:47,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:32:47,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:32:47,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:32:47,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:32:47,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:32:47,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:32:47,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:32:47,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:32:47,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b [2024-11-17 07:32:47,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:32:47,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:32:47,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:32:47,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:32:47,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:32:47,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-17 07:32:48,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:32:49,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:32:49,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-6.i [2024-11-17 07:32:49,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395d7e946/98bedea6c3664ac98bfbb8f6ace67f80/FLAG75bd1f18a [2024-11-17 07:32:49,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395d7e946/98bedea6c3664ac98bfbb8f6ace67f80 [2024-11-17 07:32:49,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:32:49,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:32:49,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:49,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:32:49,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:32:49,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:49" (1/1) ... [2024-11-17 07:32:49,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66707ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:49, skipping insertion in model container [2024-11-17 07:32:49,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:49" (1/1) ... [2024-11-17 07:32:49,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:32:49,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:49,996 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:32:50,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:50,090 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:32:50,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50 WrapperNode [2024-11-17 07:32:50,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:50,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:50,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:32:50,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:32:50,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,142 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-17 07:32:50,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:50,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:32:50,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:32:50,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:32:50,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,184 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 07:32:50,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:32:50,204 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:32:50,204 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:32:50,204 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:32:50,205 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (1/1) ... [2024-11-17 07:32:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:50,247 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 07:32:50,250 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 07:32:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:32:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:32:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:32:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:32:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:32:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:32:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:32:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:32:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:32:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:32:50,307 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 07:32:50,483 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:32:50,485 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:32:50,664 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:32:50,664 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:32:50,774 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:32:50,774 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:32:50,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:50 BoogieIcfgContainer [2024-11-17 07:32:50,774 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:32:50,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:32:50,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:32:50,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:32:50,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:32:49" (1/3) ... [2024-11-17 07:32:50,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f79152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:50, skipping insertion in model container [2024-11-17 07:32:50,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:50" (2/3) ... [2024-11-17 07:32:50,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f79152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:50, skipping insertion in model container [2024-11-17 07:32:50,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:50" (3/3) ... [2024-11-17 07:32:50,781 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2024-11-17 07:32:50,797 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:32:50,798 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-17 07:32:50,798 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:32:50,855 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:32:50,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-17 07:32:50,921 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-17 07:32:50,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:32:50,928 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 07:32:50,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-17 07:32:50,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-17 07:32:50,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:32:50,950 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;@67ee820d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:32:50,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-17 07:32:50,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:32:50,961 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-17 07:32:50,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:32:50,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:50,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:50,962 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 07:32:50,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1890733871, now seen corresponding path program 1 times [2024-11-17 07:32:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:50,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324915271] [2024-11-17 07:32:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:51,305 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 07:32:51,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324915271] [2024-11-17 07:32:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324915271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:51,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:51,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523685063] [2024-11-17 07:32:51,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:51,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:51,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:51,355 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 07:32:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:51,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:51,768 INFO L124 PetriNetUnfolderBase]: 785/1644 cut-off events. [2024-11-17 07:32:51,768 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 07:32:51,773 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 07:32:51,786 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-17 07:32:51,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 271 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 07:32:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-17 07:32:51,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2024-11-17 07:32:51,801 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 167 transitions. [2024-11-17 07:32:51,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 271 flow [2024-11-17 07:32:51,805 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 07:32:51,807 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 131 flow [2024-11-17 07:32:51,809 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 07:32:51,812 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-17 07:32:51,812 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 131 flow [2024-11-17 07:32:51,813 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 07:32:51,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:51,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:51,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:32:51,814 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 07:32:51,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1287009838, now seen corresponding path program 1 times [2024-11-17 07:32:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333971152] [2024-11-17 07:32:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:51,915 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 07:32:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333971152] [2024-11-17 07:32:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333971152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:32:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869465530] [2024-11-17 07:32:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:51,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:32:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:51,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:32:51,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:32:51,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-17 07:32:51,927 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 07:32:51,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:51,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-17 07:32:51,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:52,278 INFO L124 PetriNetUnfolderBase]: 1553/3036 cut-off events. [2024-11-17 07:32:52,279 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-17 07:32:52,283 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 07:32:52,297 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-17 07:32:52,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 287 flow [2024-11-17 07:32:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:32:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:32:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-17 07:32:52,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-17 07:32:52,301 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-11-17 07:32:52,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 287 flow [2024-11-17 07:32:52,303 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 07:32:52,305 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 145 flow [2024-11-17 07:32:52,306 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 07:32:52,306 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-17 07:32:52,307 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 145 flow [2024-11-17 07:32:52,307 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 07:32:52,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:52,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:52,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:32:52,308 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 07:32:52,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -224073259, now seen corresponding path program 1 times [2024-11-17 07:32:52,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:52,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759522204] [2024-11-17 07:32:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,393 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 07:32:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759522204] [2024-11-17 07:32:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759522204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:52,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206540075] [2024-11-17 07:32:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:52,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:52,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:52,410 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 07:32:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:52,736 INFO L124 PetriNetUnfolderBase]: 1867/3280 cut-off events. [2024-11-17 07:32:52,736 INFO L125 PetriNetUnfolderBase]: For 550/708 co-relation queries the response was YES. [2024-11-17 07:32:52,743 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 07:32:52,760 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-17 07:32:52,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 377 flow [2024-11-17 07:32:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-17 07:32:52,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-11-17 07:32:52,762 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 145 flow. Second operand 4 states and 149 transitions. [2024-11-17 07:32:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 377 flow [2024-11-17 07:32:52,765 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 07:32:52,766 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2024-11-17 07:32:52,766 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 07:32:52,767 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-17 07:32:52,767 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2024-11-17 07:32:52,767 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 07:32:52,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:52,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:52,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:32:52,768 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 07:32:52,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 134132928, now seen corresponding path program 1 times [2024-11-17 07:32:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141694756] [2024-11-17 07:32:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:52,838 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 07:32:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:52,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141694756] [2024-11-17 07:32:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141694756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:52,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485874962] [2024-11-17 07:32:52,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:52,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:52,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:52,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:52,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:32:52,857 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 07:32:52,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:52,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:32:52,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:53,125 INFO L124 PetriNetUnfolderBase]: 1381/2687 cut-off events. [2024-11-17 07:32:53,125 INFO L125 PetriNetUnfolderBase]: For 657/845 co-relation queries the response was YES. [2024-11-17 07:32:53,132 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 07:32:53,147 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-17 07:32:53,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 415 flow [2024-11-17 07:32:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 07:32:53,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-17 07:32:53,151 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 4 states and 145 transitions. [2024-11-17 07:32:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 415 flow [2024-11-17 07:32:53,153 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 07:32:53,154 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 185 flow [2024-11-17 07:32:53,155 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 07:32:53,156 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-17 07:32:53,157 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 185 flow [2024-11-17 07:32:53,157 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 07:32:53,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:53,157 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:53,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:32:53,158 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 07:32:53,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1279990136, now seen corresponding path program 1 times [2024-11-17 07:32:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:53,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343182237] [2024-11-17 07:32:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:53,231 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 07:32:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343182237] [2024-11-17 07:32:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343182237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780955362] [2024-11-17 07:32:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:53,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:53,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:53,243 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 07:32:53,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:53,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:53,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:53,593 INFO L124 PetriNetUnfolderBase]: 2225/3891 cut-off events. [2024-11-17 07:32:53,593 INFO L125 PetriNetUnfolderBase]: For 1992/2810 co-relation queries the response was YES. [2024-11-17 07:32:53,605 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 07:32:53,658 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-17 07:32:53,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 459 flow [2024-11-17 07:32:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 07:32:53,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-17 07:32:53,660 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 185 flow. Second operand 4 states and 145 transitions. [2024-11-17 07:32:53,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 459 flow [2024-11-17 07:32:53,663 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 07:32:53,664 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 205 flow [2024-11-17 07:32:53,665 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 07:32:53,665 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-17 07:32:53,665 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 205 flow [2024-11-17 07:32:53,666 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 07:32:53,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:53,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:53,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:32:53,667 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 07:32:53,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash -47953521, now seen corresponding path program 1 times [2024-11-17 07:32:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:53,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696640817] [2024-11-17 07:32:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:53,775 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 07:32:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696640817] [2024-11-17 07:32:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696640817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:53,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:53,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:53,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409316794] [2024-11-17 07:32:53,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:53,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:53,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:53,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:53,780 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 07:32:53,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:53,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:53,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:54,085 INFO L124 PetriNetUnfolderBase]: 1279/2649 cut-off events. [2024-11-17 07:32:54,085 INFO L125 PetriNetUnfolderBase]: For 1134/1629 co-relation queries the response was YES. [2024-11-17 07:32:54,095 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 07:32:54,107 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-17 07:32:54,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 503 flow [2024-11-17 07:32:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-17 07:32:54,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-17 07:32:54,109 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 205 flow. Second operand 5 states and 190 transitions. [2024-11-17 07:32:54,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 503 flow [2024-11-17 07:32:54,115 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 07:32:54,119 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 227 flow [2024-11-17 07:32:54,119 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 07:32:54,120 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-17 07:32:54,120 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 227 flow [2024-11-17 07:32:54,121 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 07:32:54,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:54,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:54,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:32:54,121 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 07:32:54,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526994, now seen corresponding path program 1 times [2024-11-17 07:32:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:54,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541992058] [2024-11-17 07:32:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:54,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:54,224 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 07:32:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541992058] [2024-11-17 07:32:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541992058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:54,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289595069] [2024-11-17 07:32:54,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:54,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:54,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:54,227 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 07:32:54,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:54,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:54,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:54,513 INFO L124 PetriNetUnfolderBase]: 1331/2831 cut-off events. [2024-11-17 07:32:54,513 INFO L125 PetriNetUnfolderBase]: For 1783/2226 co-relation queries the response was YES. [2024-11-17 07:32:54,522 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 07:32:54,534 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-17 07:32:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 531 flow [2024-11-17 07:32:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-17 07:32:54,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-11-17 07:32:54,536 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 227 flow. Second operand 5 states and 191 transitions. [2024-11-17 07:32:54,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 531 flow [2024-11-17 07:32:54,540 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 07:32:54,542 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 252 flow [2024-11-17 07:32:54,542 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 07:32:54,543 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-17 07:32:54,543 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 252 flow [2024-11-17 07:32:54,543 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 07:32:54,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:54,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:54,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:32:54,544 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 07:32:54,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667573, now seen corresponding path program 1 times [2024-11-17 07:32:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:54,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533913323] [2024-11-17 07:32:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:54,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:54,605 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 07:32:54,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:54,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533913323] [2024-11-17 07:32:54,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533913323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:54,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:54,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:54,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114429296] [2024-11-17 07:32:54,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:54,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:54,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:54,608 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 07:32:54,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:54,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:54,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:54,859 INFO L124 PetriNetUnfolderBase]: 1187/2615 cut-off events. [2024-11-17 07:32:54,859 INFO L125 PetriNetUnfolderBase]: For 2211/2602 co-relation queries the response was YES. [2024-11-17 07:32:54,868 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 07:32:54,878 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-17 07:32:54,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 466 flow [2024-11-17 07:32:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-17 07:32:54,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641509433962264 [2024-11-17 07:32:54,880 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 252 flow. Second operand 5 states and 176 transitions. [2024-11-17 07:32:54,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 466 flow [2024-11-17 07:32:54,884 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 07:32:54,885 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 253 flow [2024-11-17 07:32:54,886 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 07:32:54,886 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-17 07:32:54,886 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 253 flow [2024-11-17 07:32:54,887 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 07:32:54,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:54,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:54,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:32:54,887 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 07:32:54,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667574, now seen corresponding path program 1 times [2024-11-17 07:32:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:54,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71591601] [2024-11-17 07:32:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:54,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:54,948 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 07:32:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71591601] [2024-11-17 07:32:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71591601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:32:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370347055] [2024-11-17 07:32:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:54,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:54,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:32:54,951 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 07:32:54,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:54,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:32:54,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:55,264 INFO L124 PetriNetUnfolderBase]: 1235/2735 cut-off events. [2024-11-17 07:32:55,264 INFO L125 PetriNetUnfolderBase]: For 2633/3028 co-relation queries the response was YES. [2024-11-17 07:32:55,275 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 07:32:55,287 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-17 07:32:55,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 535 flow [2024-11-17 07:32:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-17 07:32:55,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-17 07:32:55,289 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 253 flow. Second operand 5 states and 187 transitions. [2024-11-17 07:32:55,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 535 flow [2024-11-17 07:32:55,293 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 07:32:55,295 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 275 flow [2024-11-17 07:32:55,295 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 07:32:55,296 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-17 07:32:55,296 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 275 flow [2024-11-17 07:32:55,297 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 07:32:55,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:55,297 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:55,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:32:55,298 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 07:32:55,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -864154063, now seen corresponding path program 1 times [2024-11-17 07:32:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405788173] [2024-11-17 07:32:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:55,383 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 07:32:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405788173] [2024-11-17 07:32:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405788173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218085190] [2024-11-17 07:32:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:55,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:55,388 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 07:32:55,390 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 07:32:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:55,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:32:55,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:55,622 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 07:32:55,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218085190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-17 07:32:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296192635] [2024-11-17 07:32:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:55,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:32:55,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-17 07:32:55,632 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 07:32:55,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:55,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-17 07:32:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:55,903 INFO L124 PetriNetUnfolderBase]: 1235/2790 cut-off events. [2024-11-17 07:32:55,903 INFO L125 PetriNetUnfolderBase]: For 3989/4333 co-relation queries the response was YES. [2024-11-17 07:32:55,913 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 07:32:55,926 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-17 07:32:55,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 521 flow [2024-11-17 07:32:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-17 07:32:55,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-17 07:32:55,928 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 275 flow. Second operand 4 states and 135 transitions. [2024-11-17 07:32:55,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 521 flow [2024-11-17 07:32:55,932 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 07:32:55,933 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 264 flow [2024-11-17 07:32:55,934 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 07:32:55,934 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-17 07:32:55,934 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 264 flow [2024-11-17 07:32:55,935 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 07:32:55,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:55,935 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:55,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:32:56,139 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 07:32:56,140 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 07:32:56,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1531728658, now seen corresponding path program 1 times [2024-11-17 07:32:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:56,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958863829] [2024-11-17 07:32:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:56,192 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 07:32:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:56,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958863829] [2024-11-17 07:32:56,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958863829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:56,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069698088] [2024-11-17 07:32:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:56,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:56,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:56,196 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 07:32:56,198 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 07:32:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:56,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:56,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:56,296 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 07:32:56,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069698088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:32:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243089930] [2024-11-17 07:32:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:56,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:32:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:32:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:56,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:32:56,313 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 07:32:56,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:56,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:32:56,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:56,746 INFO L124 PetriNetUnfolderBase]: 1837/3355 cut-off events. [2024-11-17 07:32:56,746 INFO L125 PetriNetUnfolderBase]: For 5060/5552 co-relation queries the response was YES. [2024-11-17 07:32:56,757 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 07:32:56,772 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 91 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-11-17 07:32:56,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 693 flow [2024-11-17 07:32:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-17 07:32:56,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-17 07:32:56,774 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 264 flow. Second operand 6 states and 201 transitions. [2024-11-17 07:32:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 693 flow [2024-11-17 07:32:56,781 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 07:32:56,782 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 267 flow [2024-11-17 07:32:56,782 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 07:32:56,783 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-17 07:32:56,783 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 267 flow [2024-11-17 07:32:56,783 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 07:32:56,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:56,784 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:56,800 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 07:32:56,984 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 07:32:56,985 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 07:32:56,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1018971992, now seen corresponding path program 1 times [2024-11-17 07:32:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116920942] [2024-11-17 07:32:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:57,071 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 07:32:57,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116920942] [2024-11-17 07:32:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116920942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155446596] [2024-11-17 07:32:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:57,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:57,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:57,076 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 07:32:57,078 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 07:32:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:57,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:32:57,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:57,228 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 07:32:57,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:32:57,289 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 07:32:57,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155446596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:32:57,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:32:57,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-17 07:32:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482922787] [2024-11-17 07:32:57,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:32:57,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:32:57,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:57,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:32:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:57,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-17 07:32:57,303 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 07:32:57,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:57,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-17 07:32:57,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:58,050 INFO L124 PetriNetUnfolderBase]: 3515/7488 cut-off events. [2024-11-17 07:32:58,050 INFO L125 PetriNetUnfolderBase]: For 11263/12014 co-relation queries the response was YES. [2024-11-17 07:32:58,068 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 07:32:58,107 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 135 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-17 07:32:58,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1093 flow [2024-11-17 07:32:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:32:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:32:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-17 07:32:58,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-17 07:32:58,108 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 267 flow. Second operand 6 states and 231 transitions. [2024-11-17 07:32:58,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1093 flow [2024-11-17 07:32:58,117 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 07:32:58,119 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 298 flow [2024-11-17 07:32:58,119 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 07:32:58,121 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-17 07:32:58,122 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 298 flow [2024-11-17 07:32:58,122 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 07:32:58,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:58,122 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:58,140 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 07:32:58,323 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 07:32:58,323 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 07:32:58,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash -238947900, now seen corresponding path program 1 times [2024-11-17 07:32:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855225618] [2024-11-17 07:32:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:58,363 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 07:32:58,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855225618] [2024-11-17 07:32:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855225618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140011261] [2024-11-17 07:32:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:58,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:58,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:58,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-17 07:32:58,372 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 07:32:58,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:58,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-17 07:32:58,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:59,328 INFO L124 PetriNetUnfolderBase]: 5489/9683 cut-off events. [2024-11-17 07:32:59,329 INFO L125 PetriNetUnfolderBase]: For 16145/17818 co-relation queries the response was YES. [2024-11-17 07:32:59,365 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 07:32:59,405 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 83 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-17 07:32:59,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 698 flow [2024-11-17 07:32:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-17 07:32:59,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2024-11-17 07:32:59,407 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 298 flow. Second operand 4 states and 138 transitions. [2024-11-17 07:32:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 698 flow [2024-11-17 07:32:59,421 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 07:32:59,423 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 302 flow [2024-11-17 07:32:59,423 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 07:32:59,424 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-17 07:32:59,424 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 302 flow [2024-11-17 07:32:59,425 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 07:32:59,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:59,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:59,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:32:59,426 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 07:32:59,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1523360417, now seen corresponding path program 1 times [2024-11-17 07:32:59,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:59,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634892842] [2024-11-17 07:32:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,484 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 07:32:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634892842] [2024-11-17 07:32:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634892842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:32:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054233586] [2024-11-17 07:32:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:32:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:59,489 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 07:32:59,490 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 07:32:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:32:59,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:32:59,587 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 07:32:59,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:32:59,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054233586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:32:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:32:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662238300] [2024-11-17 07:32:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:59,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:32:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:32:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:32:59,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:32:59,602 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 07:32:59,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:59,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:32:59,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:00,366 INFO L124 PetriNetUnfolderBase]: 4427/8158 cut-off events. [2024-11-17 07:33:00,366 INFO L125 PetriNetUnfolderBase]: For 16976/17692 co-relation queries the response was YES. [2024-11-17 07:33:00,382 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 07:33:00,411 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 100 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-17 07:33:00,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 901 flow [2024-11-17 07:33:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:33:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:33:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-17 07:33:00,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-17 07:33:00,413 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 302 flow. Second operand 6 states and 198 transitions. [2024-11-17 07:33:00,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 901 flow [2024-11-17 07:33:00,428 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 07:33:00,430 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 306 flow [2024-11-17 07:33:00,430 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 07:33:00,431 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:33:00,431 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 306 flow [2024-11-17 07:33:00,431 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 07:33:00,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:00,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:00,449 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 07:33:00,635 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 07:33:00,636 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 07:33:00,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1241379951, now seen corresponding path program 1 times [2024-11-17 07:33:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91437633] [2024-11-17 07:33:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:00,704 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 07:33:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91437633] [2024-11-17 07:33:00,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91437633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776406922] [2024-11-17 07:33:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:00,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:00,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:00,709 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 07:33:00,710 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 07:33:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:00,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:33:00,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:00,797 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 07:33:00,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776406922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:00,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:33:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931303530] [2024-11-17 07:33:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:00,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:33:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:00,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:33:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:00,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:33:00,816 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 07:33:00,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:00,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:33:00,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:01,708 INFO L124 PetriNetUnfolderBase]: 4991/8868 cut-off events. [2024-11-17 07:33:01,708 INFO L125 PetriNetUnfolderBase]: For 17348/17719 co-relation queries the response was YES. [2024-11-17 07:33:01,735 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 07:33:01,890 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 97 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-17 07:33:01,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 837 flow [2024-11-17 07:33:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:33:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:33:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-11-17 07:33:01,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-11-17 07:33:01,893 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 306 flow. Second operand 6 states and 195 transitions. [2024-11-17 07:33:01,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 837 flow [2024-11-17 07:33:01,908 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 07:33:01,910 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 307 flow [2024-11-17 07:33:01,910 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 07:33:01,910 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-17 07:33:01,911 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 307 flow [2024-11-17 07:33:01,911 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 07:33:01,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:01,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:01,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:02,112 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 07:33:02,112 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 07:33:02,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash 20467549, now seen corresponding path program 1 times [2024-11-17 07:33:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024643712] [2024-11-17 07:33:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:02,168 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 07:33:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024643712] [2024-11-17 07:33:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024643712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:02,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151377598] [2024-11-17 07:33:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:02,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:02,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-17 07:33:02,179 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 07:33:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-17 07:33:02,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:02,885 INFO L124 PetriNetUnfolderBase]: 4731/8336 cut-off events. [2024-11-17 07:33:02,885 INFO L125 PetriNetUnfolderBase]: For 18507/18761 co-relation queries the response was YES. [2024-11-17 07:33:02,903 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 07:33:02,929 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 78 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-17 07:33:02,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 741 flow [2024-11-17 07:33:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-17 07:33:02,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-11-17 07:33:02,930 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 307 flow. Second operand 4 states and 137 transitions. [2024-11-17 07:33:02,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 741 flow [2024-11-17 07:33:02,948 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 07:33:02,950 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 320 flow [2024-11-17 07:33:02,950 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 07:33:02,950 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:33:02,950 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 320 flow [2024-11-17 07:33:02,951 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 07:33:02,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:02,951 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:02,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:33:02,951 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 07:33:02,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 171927439, now seen corresponding path program 1 times [2024-11-17 07:33:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575375508] [2024-11-17 07:33:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:02,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:02,981 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 07:33:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575375508] [2024-11-17 07:33:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575375508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:02,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:02,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391640091] [2024-11-17 07:33:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:02,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:02,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-17 07:33:02,992 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 07:33:02,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:02,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-17 07:33:02,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:03,727 INFO L124 PetriNetUnfolderBase]: 5475/9279 cut-off events. [2024-11-17 07:33:03,728 INFO L125 PetriNetUnfolderBase]: For 20142/20230 co-relation queries the response was YES. [2024-11-17 07:33:03,752 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 07:33:03,783 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-17 07:33:03,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 734 flow [2024-11-17 07:33:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-17 07:33:03,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-17 07:33:03,784 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 320 flow. Second operand 4 states and 134 transitions. [2024-11-17 07:33:03,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 734 flow [2024-11-17 07:33:03,798 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 07:33:03,800 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 318 flow [2024-11-17 07:33:03,800 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 07:33:03,800 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-17 07:33:03,800 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 318 flow [2024-11-17 07:33:03,801 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 07:33:03,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:03,801 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 07:33:03,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 07:33:03,801 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 07:33:03,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash -196956509, now seen corresponding path program 1 times [2024-11-17 07:33:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:03,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048848354] [2024-11-17 07:33:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:03,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:03,863 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 07:33:03,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048848354] [2024-11-17 07:33:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048848354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711721616] [2024-11-17 07:33:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:03,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:03,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:03,867 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 07:33:03,869 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 07:33:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:03,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:33:03,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:04,031 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 07:33:04,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:04,111 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 07:33:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711721616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:04,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:04,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-17 07:33:04,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162899972] [2024-11-17 07:33:04,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:04,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:33:04,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:33:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:33:04,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:04,116 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 07:33:04,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:04,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:04,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:07,432 INFO L124 PetriNetUnfolderBase]: 13739/28619 cut-off events. [2024-11-17 07:33:07,433 INFO L125 PetriNetUnfolderBase]: For 68452/68755 co-relation queries the response was YES. [2024-11-17 07:33:07,602 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 07:33:07,702 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 418 selfloop transitions, 71 changer transitions 0/510 dead transitions. [2024-11-17 07:33:07,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 510 transitions, 3786 flow [2024-11-17 07:33:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 07:33:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 07:33:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1070 transitions. [2024-11-17 07:33:07,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210242587601078 [2024-11-17 07:33:07,705 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 318 flow. Second operand 28 states and 1070 transitions. [2024-11-17 07:33:07,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 510 transitions, 3786 flow [2024-11-17 07:33:07,782 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 07:33:07,786 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1178 flow [2024-11-17 07:33:07,787 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 07:33:07,787 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-11-17 07:33:07,787 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1178 flow [2024-11-17 07:33:07,788 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 07:33:07,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:07,788 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 07:33:07,801 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 07:33:07,992 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 07:33:07,992 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 07:33:07,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:07,993 INFO L85 PathProgramCache]: Analyzing trace with hash 218461820, now seen corresponding path program 1 times [2024-11-17 07:33:07,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:07,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638762396] [2024-11-17 07:33:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:08,061 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 07:33:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:08,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638762396] [2024-11-17 07:33:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638762396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046007327] [2024-11-17 07:33:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:08,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:08,064 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 07:33:08,065 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 07:33:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:08,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:33:08,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:08,208 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 07:33:08,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046007327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:08,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:08,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-17 07:33:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026228102] [2024-11-17 07:33:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:08,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:33:08,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:33:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:33:08,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:08,210 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 07:33:08,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:08,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:08,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:11,314 INFO L124 PetriNetUnfolderBase]: 11473/24751 cut-off events. [2024-11-17 07:33:11,315 INFO L125 PetriNetUnfolderBase]: For 232706/232959 co-relation queries the response was YES. [2024-11-17 07:33:11,477 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 07:33:11,576 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-11-17 07:33:11,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1389 flow [2024-11-17 07:33:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:33:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:33:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-17 07:33:11,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-11-17 07:33:11,578 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1178 flow. Second operand 6 states and 206 transitions. [2024-11-17 07:33:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1389 flow [2024-11-17 07:33:12,295 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 07:33:12,297 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 715 flow [2024-11-17 07:33:12,298 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 07:33:12,298 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-17 07:33:12,298 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 715 flow [2024-11-17 07:33:12,298 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 07:33:12,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:12,299 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 07:33:12,312 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 07:33:12,499 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 07:33:12,500 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 07:33:12,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1715647968, now seen corresponding path program 1 times [2024-11-17 07:33:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:12,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539852473] [2024-11-17 07:33:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:12,603 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 07:33:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539852473] [2024-11-17 07:33:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539852473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795320473] [2024-11-17 07:33:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:12,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:12,606 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 07:33:12,608 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 07:33:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:12,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:33:12,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:12,788 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 07:33:12,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:12,894 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 07:33:12,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795320473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:12,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-17 07:33:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864855026] [2024-11-17 07:33:12,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:12,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:33:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:33:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:33:12,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:12,898 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 07:33:12,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:12,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:12,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:17,495 INFO L124 PetriNetUnfolderBase]: 16225/35787 cut-off events. [2024-11-17 07:33:17,495 INFO L125 PetriNetUnfolderBase]: For 306718/307081 co-relation queries the response was YES. [2024-11-17 07:33:17,775 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 07:33:17,894 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 322 selfloop transitions, 54 changer transitions 0/397 dead transitions. [2024-11-17 07:33:17,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3141 flow [2024-11-17 07:33:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:33:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:33:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 775 transitions. [2024-11-17 07:33:17,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6963162623539982 [2024-11-17 07:33:17,897 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 715 flow. Second operand 21 states and 775 transitions. [2024-11-17 07:33:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3141 flow [2024-11-17 07:33:18,465 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 07:33:18,468 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1104 flow [2024-11-17 07:33:18,469 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 07:33:18,469 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-17 07:33:18,469 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1104 flow [2024-11-17 07:33:18,470 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 07:33:18,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:18,470 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 07:33:18,482 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 07:33:18,670 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 07:33:18,670 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 07:33:18,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash -552312867, now seen corresponding path program 1 times [2024-11-17 07:33:18,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:18,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74340300] [2024-11-17 07:33:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:18,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:18,788 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 07:33:18,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74340300] [2024-11-17 07:33:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74340300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565961515] [2024-11-17 07:33:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:18,790 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 07:33:18,792 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 07:33:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:18,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:33:18,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:19,145 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 07:33:19,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:19,270 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 07:33:19,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565961515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:19,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:19,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-17 07:33:19,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479581860] [2024-11-17 07:33:19,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:19,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 07:33:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 07:33:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-17 07:33:19,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-17 07:33:19,273 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 07:33:19,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:19,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-17 07:33:19,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:29,102 INFO L124 PetriNetUnfolderBase]: 30701/69095 cut-off events. [2024-11-17 07:33:29,103 INFO L125 PetriNetUnfolderBase]: For 1102364/1103054 co-relation queries the response was YES. [2024-11-17 07:33:30,166 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 07:33:30,385 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 555 selfloop transitions, 118 changer transitions 0/694 dead transitions. [2024-11-17 07:33:30,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 694 transitions, 5913 flow [2024-11-17 07:33:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-17 07:33:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-17 07:33:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1378 transitions. [2024-11-17 07:33:30,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-17 07:33:30,388 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1104 flow. Second operand 37 states and 1378 transitions. [2024-11-17 07:33:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 694 transitions, 5913 flow [2024-11-17 07:33:32,781 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 07:33:32,790 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2103 flow [2024-11-17 07:33:32,790 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 07:33:32,791 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-17 07:33:32,791 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2103 flow [2024-11-17 07:33:32,791 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 07:33:32,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:32,792 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:32,809 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 07:33:32,992 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 07:33:32,993 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 07:33:32,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -25267541, now seen corresponding path program 2 times [2024-11-17 07:33:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:32,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030441551] [2024-11-17 07:33:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:33,166 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 07:33:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030441551] [2024-11-17 07:33:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030441551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228247608] [2024-11-17 07:33:33,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:33:33,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:33,170 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 07:33:33,171 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 07:33:33,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:33:33,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:33:33,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 07:33:33,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:33,387 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 07:33:33,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:33,501 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 07:33:33,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228247608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:33,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-17 07:33:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152480378] [2024-11-17 07:33:33,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:33,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:33:33,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:33:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:33:33,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-17 07:33:33,518 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 07:33:33,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:33,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-17 07:33:33,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand