./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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_safe-5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:45:53,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:45:53,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:45:53,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:45:53,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:45:53,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:45:53,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:45:53,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:45:53,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:45:53,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:45:53,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:45:53,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:45:53,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:45:53,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:45:53,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:45:53,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:45:53,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:45:53,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:45:53,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:45:53,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:45:53,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:45:53,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:45:53,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:45:53,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:45:53,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:45:53,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:45:53,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:45:53,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:45:53,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:45:53,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:45:53,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:45:53,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:45:53,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:45:53,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:45:53,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:45:53,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:45:53,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:45:53,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:45:53,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:45:53,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 [2024-11-19 13:45:53,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:45:53,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:45:53,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:45:53,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:45:53,474 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:45:53,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-5.i [2024-11-19 13:45:54,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:45:55,119 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:45:55,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-5.i [2024-11-19 13:45:55,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ef43b36/3d448c5903154281b1a7f4dd6fe44dac/FLAG3d4253aff [2024-11-19 13:45:55,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ef43b36/3d448c5903154281b1a7f4dd6fe44dac [2024-11-19 13:45:55,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:45:55,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:45:55,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:45:55,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:45:55,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:45:55,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f5299e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55, skipping insertion in model container [2024-11-19 13:45:55,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:45:55,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:45:55,517 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:45:55,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:45:55,594 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:45:55,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55 WrapperNode [2024-11-19 13:45:55,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:45:55,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:45:55,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:45:55,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:45:55,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,630 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-19 13:45:55,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:45:55,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:45:55,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:45:55,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:45:55,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,648 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]. [2024-11-19 13:45:55,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:45:55,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:45:55,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:45:55,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:45:55,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (1/1) ... [2024-11-19 13:45:55,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:45:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:55,688 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) [2024-11-19 13:45:55,695 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 [2024-11-19 13:45:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:45:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:45:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:45:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:45:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 13:45:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:45:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:45:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 13:45:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:45:55,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:45:55,731 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:45:55,840 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:45:55,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:45:55,996 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:45:55,996 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:45:56,107 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:45:56,107 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 13:45:56,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:56 BoogieIcfgContainer [2024-11-19 13:45:56,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:45:56,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:45:56,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:45:56,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:45:56,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:45:55" (1/3) ... [2024-11-19 13:45:56,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bec6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:56, skipping insertion in model container [2024-11-19 13:45:56,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:55" (2/3) ... [2024-11-19 13:45:56,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bec6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:56, skipping insertion in model container [2024-11-19 13:45:56,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:56" (3/3) ... [2024-11-19 13:45:56,116 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2024-11-19 13:45:56,128 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:45:56,128 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 13:45:56,129 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:45:56,167 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:45:56,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-19 13:45:56,214 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-19 13:45:56,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:45:56,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-19 13:45:56,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-19 13:45:56,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-11-19 13:45:56,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:45:56,233 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;@6692f160, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:45:56,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-19 13:45:56,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:45:56,242 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-19 13:45:56,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:45:56,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:56,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:56,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:56,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1464023297, now seen corresponding path program 1 times [2024-11-19 13:45:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:56,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573959510] [2024-11-19 13:45:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:56,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573959510] [2024-11-19 13:45:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573959510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:56,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:56,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713489423] [2024-11-19 13:45:56,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:56,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:56,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:56,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-19 13:45:56,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:56,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:56,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:56,808 INFO L124 PetriNetUnfolderBase]: 657/1293 cut-off events. [2024-11-19 13:45:56,810 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:45:56,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1293 events. 657/1293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8039 event pairs, 156 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 2296. Up to 514 conditions per place. [2024-11-19 13:45:56,823 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-11-19 13:45:56,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-11-19 13:45:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 13:45:56,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-19 13:45:56,834 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-11-19 13:45:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-11-19 13:45:56,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:56,839 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-11-19 13:45:56,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-19 13:45:56,843 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 13:45:56,843 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-11-19 13:45:56,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-19 13:45:56,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:56,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:56,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:45:56,844 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:56,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1801374430, now seen corresponding path program 1 times [2024-11-19 13:45:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800425054] [2024-11-19 13:45:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800425054] [2024-11-19 13:45:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800425054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:56,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:56,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:45:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586443180] [2024-11-19 13:45:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:56,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:45:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:45:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:45:56,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:56,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-19 13:45:56,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:56,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:57,188 INFO L124 PetriNetUnfolderBase]: 1169/2451 cut-off events. [2024-11-19 13:45:57,188 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-11-19 13:45:57,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2451 events. 1169/2451 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18190 event pairs, 379 based on Foata normal form. 53/2095 useless extension candidates. Maximal degree in co-relation 4907. Up to 1025 conditions per place. [2024-11-19 13:45:57,200 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-19 13:45:57,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 263 flow [2024-11-19 13:45:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:45:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:45:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-19 13:45:57,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-19 13:45:57,203 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 102 transitions. [2024-11-19 13:45:57,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 263 flow [2024-11-19 13:45:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:45:57,205 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2024-11-19 13:45:57,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-19 13:45:57,206 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-19 13:45:57,206 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2024-11-19 13:45:57,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-19 13:45:57,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:57,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:57,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:45:57,207 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1822895874, now seen corresponding path program 1 times [2024-11-19 13:45:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:57,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053405147] [2024-11-19 13:45:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:57,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053405147] [2024-11-19 13:45:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053405147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:57,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:57,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455998165] [2024-11-19 13:45:57,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:57,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:57,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:57,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-19 13:45:57,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:57,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:57,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:57,508 INFO L124 PetriNetUnfolderBase]: 1401/2500 cut-off events. [2024-11-19 13:45:57,508 INFO L125 PetriNetUnfolderBase]: For 470/520 co-relation queries the response was YES. [2024-11-19 13:45:57,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 2500 events. 1401/2500 cut-off events. For 470/520 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16320 event pairs, 357 based on Foata normal form. 116/2184 useless extension candidates. Maximal degree in co-relation 5596. Up to 1235 conditions per place. [2024-11-19 13:45:57,524 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-19 13:45:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 347 flow [2024-11-19 13:45:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 13:45:57,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-19 13:45:57,526 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 135 transitions. [2024-11-19 13:45:57,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 347 flow [2024-11-19 13:45:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:57,529 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-11-19 13:45:57,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-19 13:45:57,530 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-11-19 13:45:57,530 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-11-19 13:45:57,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-19 13:45:57,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:57,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:57,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:45:57,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 8032759, now seen corresponding path program 1 times [2024-11-19 13:45:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170799760] [2024-11-19 13:45:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:57,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:57,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170799760] [2024-11-19 13:45:57,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170799760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:57,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:57,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:45:57,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593766632] [2024-11-19 13:45:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:57,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:45:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:45:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:45:57,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:57,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-19 13:45:57,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:57,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:57,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:57,756 INFO L124 PetriNetUnfolderBase]: 1133/2318 cut-off events. [2024-11-19 13:45:57,756 INFO L125 PetriNetUnfolderBase]: For 616/766 co-relation queries the response was YES. [2024-11-19 13:45:57,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 2318 events. 1133/2318 cut-off events. For 616/766 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16948 event pairs, 365 based on Foata normal form. 90/1999 useless extension candidates. Maximal degree in co-relation 5122. Up to 993 conditions per place. [2024-11-19 13:45:57,789 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-19 13:45:57,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 308 flow [2024-11-19 13:45:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:45:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:45:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-19 13:45:57,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-19 13:45:57,791 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-19 13:45:57,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 308 flow [2024-11-19 13:45:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:57,792 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-11-19 13:45:57,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-19 13:45:57,793 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-19 13:45:57,793 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-11-19 13:45:57,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-19 13:45:57,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:57,794 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:57,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:45:57,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:57,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash 266605758, now seen corresponding path program 1 times [2024-11-19 13:45:57,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:57,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431232309] [2024-11-19 13:45:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431232309] [2024-11-19 13:45:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431232309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:57,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:57,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294921838] [2024-11-19 13:45:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:57,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:57,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:57,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 13:45:57,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:57,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:57,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:58,088 INFO L124 PetriNetUnfolderBase]: 2065/3713 cut-off events. [2024-11-19 13:45:58,088 INFO L125 PetriNetUnfolderBase]: For 1351/1759 co-relation queries the response was YES. [2024-11-19 13:45:58,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8812 conditions, 3713 events. 2065/3713 cut-off events. For 1351/1759 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26402 event pairs, 457 based on Foata normal form. 253/3375 useless extension candidates. Maximal degree in co-relation 8788. Up to 2001 conditions per place. [2024-11-19 13:45:58,133 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-19 13:45:58,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-11-19 13:45:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-19 13:45:58,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-11-19 13:45:58,137 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-11-19 13:45:58,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-11-19 13:45:58,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:58,139 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-11-19 13:45:58,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-19 13:45:58,140 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-19 13:45:58,141 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-11-19 13:45:58,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 13:45:58,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:58,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:58,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:45:58,141 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:58,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:58,142 INFO L85 PathProgramCache]: Analyzing trace with hash 249015829, now seen corresponding path program 1 times [2024-11-19 13:45:58,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:58,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722677286] [2024-11-19 13:45:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:58,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722677286] [2024-11-19 13:45:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722677286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:58,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277252474] [2024-11-19 13:45:58,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:58,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:58,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:58,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-19 13:45:58,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:58,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:58,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:58,395 INFO L124 PetriNetUnfolderBase]: 1601/3219 cut-off events. [2024-11-19 13:45:58,396 INFO L125 PetriNetUnfolderBase]: For 1181/1655 co-relation queries the response was YES. [2024-11-19 13:45:58,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 3219 events. 1601/3219 cut-off events. For 1181/1655 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24206 event pairs, 227 based on Foata normal form. 335/2961 useless extension candidates. Maximal degree in co-relation 7705. Up to 1673 conditions per place. [2024-11-19 13:45:58,412 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-19 13:45:58,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-11-19 13:45:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-19 13:45:58,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-11-19 13:45:58,413 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-11-19 13:45:58,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-11-19 13:45:58,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:58,416 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-11-19 13:45:58,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-11-19 13:45:58,416 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-19 13:45:58,417 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-11-19 13:45:58,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-19 13:45:58,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:58,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:58,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:45:58,417 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:58,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 444542449, now seen corresponding path program 1 times [2024-11-19 13:45:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869559884] [2024-11-19 13:45:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869559884] [2024-11-19 13:45:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869559884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:58,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565369694] [2024-11-19 13:45:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:58,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:58,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:58,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:58,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:58,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:58,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:58,635 INFO L124 PetriNetUnfolderBase]: 1121/2195 cut-off events. [2024-11-19 13:45:58,635 INFO L125 PetriNetUnfolderBase]: For 1435/1757 co-relation queries the response was YES. [2024-11-19 13:45:58,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 2195 events. 1121/2195 cut-off events. For 1435/1757 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14756 event pairs, 160 based on Foata normal form. 35/1912 useless extension candidates. Maximal degree in co-relation 5986. Up to 835 conditions per place. [2024-11-19 13:45:58,645 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-19 13:45:58,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-11-19 13:45:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-19 13:45:58,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-11-19 13:45:58,647 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-11-19 13:45:58,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-11-19 13:45:58,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:58,649 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-11-19 13:45:58,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-11-19 13:45:58,650 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-19 13:45:58,650 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-11-19 13:45:58,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:58,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:58,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:58,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:45:58,651 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:58,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1079587370, now seen corresponding path program 1 times [2024-11-19 13:45:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602436736] [2024-11-19 13:45:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602436736] [2024-11-19 13:45:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602436736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:58,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:58,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754687291] [2024-11-19 13:45:58,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:58,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:58,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:58,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:58,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:58,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:58,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:58,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:58,878 INFO L124 PetriNetUnfolderBase]: 1167/2324 cut-off events. [2024-11-19 13:45:58,879 INFO L125 PetriNetUnfolderBase]: For 1787/2048 co-relation queries the response was YES. [2024-11-19 13:45:58,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6629 conditions, 2324 events. 1167/2324 cut-off events. For 1787/2048 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16002 event pairs, 223 based on Foata normal form. 72/2239 useless extension candidates. Maximal degree in co-relation 6596. Up to 1105 conditions per place. [2024-11-19 13:45:58,888 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-19 13:45:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-11-19 13:45:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-19 13:45:58,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-11-19 13:45:58,889 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-11-19 13:45:58,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-11-19 13:45:58,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:58,892 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-11-19 13:45:58,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-11-19 13:45:58,893 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-19 13:45:58,893 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-11-19 13:45:58,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:58,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:58,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:58,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:45:58,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:58,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601649, now seen corresponding path program 1 times [2024-11-19 13:45:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431161189] [2024-11-19 13:45:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431161189] [2024-11-19 13:45:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431161189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759793441] [2024-11-19 13:45:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:58,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:58,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:58,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:58,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:58,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:58,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:59,101 INFO L124 PetriNetUnfolderBase]: 1041/2086 cut-off events. [2024-11-19 13:45:59,101 INFO L125 PetriNetUnfolderBase]: For 2141/2375 co-relation queries the response was YES. [2024-11-19 13:45:59,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 2086 events. 1041/2086 cut-off events. For 2141/2375 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14082 event pairs, 265 based on Foata normal form. 70/2020 useless extension candidates. Maximal degree in co-relation 6184. Up to 1215 conditions per place. [2024-11-19 13:45:59,111 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-19 13:45:59,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-11-19 13:45:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-19 13:45:59,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-19 13:45:59,113 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-11-19 13:45:59,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-11-19 13:45:59,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:59,116 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-11-19 13:45:59,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-11-19 13:45:59,116 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-11-19 13:45:59,117 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-11-19 13:45:59,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:59,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:59,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:59,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:45:59,117 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:59,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601650, now seen corresponding path program 1 times [2024-11-19 13:45:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621876235] [2024-11-19 13:45:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621876235] [2024-11-19 13:45:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621876235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:59,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:59,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560791444] [2024-11-19 13:45:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:59,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:59,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:59,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:59,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:59,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:59,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:59,377 INFO L124 PetriNetUnfolderBase]: 1083/2163 cut-off events. [2024-11-19 13:45:59,377 INFO L125 PetriNetUnfolderBase]: For 2515/2758 co-relation queries the response was YES. [2024-11-19 13:45:59,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 2163 events. 1083/2163 cut-off events. For 2515/2758 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14609 event pairs, 258 based on Foata normal form. 70/2146 useless extension candidates. Maximal degree in co-relation 6472. Up to 1229 conditions per place. [2024-11-19 13:45:59,388 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-19 13:45:59,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-11-19 13:45:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-19 13:45:59,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-19 13:45:59,389 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-11-19 13:45:59,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-11-19 13:45:59,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:45:59,393 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-11-19 13:45:59,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-19 13:45:59,394 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-19 13:45:59,394 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-11-19 13:45:59,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-19 13:45:59,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:59,394 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:45:59,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:59,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1022324864, now seen corresponding path program 1 times [2024-11-19 13:45:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8072258] [2024-11-19 13:45:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8072258] [2024-11-19 13:45:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8072258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252133587] [2024-11-19 13:45:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:59,433 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) [2024-11-19 13:45:59,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:45:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:59,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:45:59,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:45:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252133587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:45:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-19 13:45:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226188297] [2024-11-19 13:45:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:59,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:45:59,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:59,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 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) [2024-11-19 13:45:59,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:59,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:59,754 INFO L124 PetriNetUnfolderBase]: 1083/2422 cut-off events. [2024-11-19 13:45:59,754 INFO L125 PetriNetUnfolderBase]: For 3742/4021 co-relation queries the response was YES. [2024-11-19 13:45:59,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7013 conditions, 2422 events. 1083/2422 cut-off events. For 3742/4021 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18068 event pairs, 187 based on Foata normal form. 172/2509 useless extension candidates. Maximal degree in co-relation 6980. Up to 1216 conditions per place. [2024-11-19 13:45:59,763 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-19 13:45:59,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 509 flow [2024-11-19 13:45:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-19 13:45:59,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-19 13:45:59,764 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 120 transitions. [2024-11-19 13:45:59,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 509 flow [2024-11-19 13:45:59,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 489 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:59,768 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2024-11-19 13:45:59,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-11-19 13:45:59,769 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-19 13:45:59,769 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2024-11-19 13:45:59,769 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) [2024-11-19 13:45:59,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:59,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:59,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:45:59,973 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,SelfDestructingSolverStorable10 [2024-11-19 13:45:59,974 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:59,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1387157528, now seen corresponding path program 1 times [2024-11-19 13:45:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458832355] [2024-11-19 13:45:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458832355] [2024-11-19 13:46:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458832355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757378292] [2024-11-19 13:46:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:00,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:00,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:00,013 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) [2024-11-19 13:46:00,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:46:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:00,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:46:00,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:00,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:46:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757378292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:00,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:46:00,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:46:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668304538] [2024-11-19 13:46:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:00,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:46:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:46:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:46:00,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:46:00,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-11-19 13:46:00,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:00,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:46:00,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:00,312 INFO L124 PetriNetUnfolderBase]: 1453/2628 cut-off events. [2024-11-19 13:46:00,312 INFO L125 PetriNetUnfolderBase]: For 4353/4704 co-relation queries the response was YES. [2024-11-19 13:46:00,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2628 events. 1453/2628 cut-off events. For 4353/4704 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17226 event pairs, 311 based on Foata normal form. 134/2659 useless extension candidates. Maximal degree in co-relation 8347. Up to 1048 conditions per place. [2024-11-19 13:46:00,324 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-19 13:46:00,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 678 flow [2024-11-19 13:46:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:46:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:46:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-19 13:46:00,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-19 13:46:00,326 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 182 transitions. [2024-11-19 13:46:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 678 flow [2024-11-19 13:46:00,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:00,330 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2024-11-19 13:46:00,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-11-19 13:46:00,331 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-19 13:46:00,332 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2024-11-19 13:46:00,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-11-19 13:46:00,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:00,332 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:00,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:46:00,532 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,SelfDestructingSolverStorable11 [2024-11-19 13:46:00,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:00,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1627299989, now seen corresponding path program 1 times [2024-11-19 13:46:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453270466] [2024-11-19 13:46:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453270466] [2024-11-19 13:46:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453270466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094523282] [2024-11-19 13:46:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:00,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:00,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:00,579 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) [2024-11-19 13:46:00,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:46:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:00,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:46:00,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:00,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094523282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:00,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-19 13:46:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838107157] [2024-11-19 13:46:00,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:00,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:46:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:46:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:46:00,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:00,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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) [2024-11-19 13:46:00,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:00,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:01,241 INFO L124 PetriNetUnfolderBase]: 2907/6208 cut-off events. [2024-11-19 13:46:01,241 INFO L125 PetriNetUnfolderBase]: For 10495/11093 co-relation queries the response was YES. [2024-11-19 13:46:01,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17999 conditions, 6208 events. 2907/6208 cut-off events. For 10495/11093 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 50628 event pairs, 187 based on Foata normal form. 367/6490 useless extension candidates. Maximal degree in co-relation 17966. Up to 1217 conditions per place. [2024-11-19 13:46:01,270 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-19 13:46:01,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1087 flow [2024-11-19 13:46:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:46:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:46:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-11-19 13:46:01,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-11-19 13:46:01,271 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 207 transitions. [2024-11-19 13:46:01,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1087 flow [2024-11-19 13:46:01,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1078 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:46:01,276 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-19 13:46:01,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-19 13:46:01,277 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-19 13:46:01,277 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-19 13:46:01,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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) [2024-11-19 13:46:01,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:01,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:01,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:46:01,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:01,479 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:01,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -52210084, now seen corresponding path program 1 times [2024-11-19 13:46:01,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:01,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403507399] [2024-11-19 13:46:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:46:01,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403507399] [2024-11-19 13:46:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403507399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:01,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:46:01,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:46:01,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583874884] [2024-11-19 13:46:01,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:01,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:46:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:46:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:46:01,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-19 13:46:01,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-19 13:46:01,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:01,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-19 13:46:01,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:02,123 INFO L124 PetriNetUnfolderBase]: 4097/7261 cut-off events. [2024-11-19 13:46:02,123 INFO L125 PetriNetUnfolderBase]: For 13419/14315 co-relation queries the response was YES. [2024-11-19 13:46:02,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23652 conditions, 7261 events. 4097/7261 cut-off events. For 13419/14315 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 52374 event pairs, 2101 based on Foata normal form. 306/7400 useless extension candidates. Maximal degree in co-relation 23616. Up to 3923 conditions per place. [2024-11-19 13:46:02,171 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-11-19 13:46:02,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 682 flow [2024-11-19 13:46:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-19 13:46:02,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-19 13:46:02,174 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 124 transitions. [2024-11-19 13:46:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 682 flow [2024-11-19 13:46:02,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 646 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-19 13:46:02,184 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-19 13:46:02,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-19 13:46:02,185 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-19 13:46:02,185 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-19 13:46:02,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-19 13:46:02,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:02,186 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:02,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 13:46:02,186 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:02,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1228200713, now seen corresponding path program 1 times [2024-11-19 13:46:02,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:02,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432100028] [2024-11-19 13:46:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:02,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432100028] [2024-11-19 13:46:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432100028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970593439] [2024-11-19 13:46:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:02,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:02,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:02,243 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) [2024-11-19 13:46:02,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:46:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:02,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:46:02,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:02,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:46:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970593439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:02,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:46:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:46:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976734322] [2024-11-19 13:46:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:02,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:46:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:46:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:46:02,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:46:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-19 13:46:02,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:02,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:46:02,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:02,924 INFO L124 PetriNetUnfolderBase]: 3691/6641 cut-off events. [2024-11-19 13:46:02,925 INFO L125 PetriNetUnfolderBase]: For 13177/13600 co-relation queries the response was YES. [2024-11-19 13:46:02,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21306 conditions, 6641 events. 3691/6641 cut-off events. For 13177/13600 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48736 event pairs, 815 based on Foata normal form. 162/6591 useless extension candidates. Maximal degree in co-relation 21270. Up to 2628 conditions per place. [2024-11-19 13:46:02,961 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-19 13:46:02,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 769 flow [2024-11-19 13:46:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:46:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:46:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-19 13:46:02,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:46:02,962 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 176 transitions. [2024-11-19 13:46:02,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 769 flow [2024-11-19 13:46:02,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:02,973 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-11-19 13:46:02,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-19 13:46:02,974 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-19 13:46:02,974 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-11-19 13:46:02,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-19 13:46:02,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:02,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:02,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:03,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:46:03,175 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:03,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307593, now seen corresponding path program 1 times [2024-11-19 13:46:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534635293] [2024-11-19 13:46:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534635293] [2024-11-19 13:46:03,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534635293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236291161] [2024-11-19 13:46:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:03,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:03,214 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) [2024-11-19 13:46:03,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:46:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:03,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:46:03,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:03,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:46:03,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236291161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:03,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:46:03,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:46:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621688938] [2024-11-19 13:46:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:46:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:46:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:46:03,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:46:03,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-19 13:46:03,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:03,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:46:03,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:03,699 INFO L124 PetriNetUnfolderBase]: 3819/6579 cut-off events. [2024-11-19 13:46:03,699 INFO L125 PetriNetUnfolderBase]: For 14016/14223 co-relation queries the response was YES. [2024-11-19 13:46:03,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22099 conditions, 6579 events. 3819/6579 cut-off events. For 14016/14223 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 45437 event pairs, 1663 based on Foata normal form. 228/6439 useless extension candidates. Maximal degree in co-relation 22062. Up to 3155 conditions per place. [2024-11-19 13:46:03,735 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-19 13:46:03,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-11-19 13:46:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-19 13:46:03,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-11-19 13:46:03,736 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-11-19 13:46:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-11-19 13:46:03,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:46:03,748 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-11-19 13:46:03,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-11-19 13:46:03,748 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-11-19 13:46:03,748 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-11-19 13:46:03,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-19 13:46:03,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:03,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:03,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:03,949 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,SelfDestructingSolverStorable15 [2024-11-19 13:46:03,950 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:03,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 381587199, now seen corresponding path program 1 times [2024-11-19 13:46:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530584659] [2024-11-19 13:46:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:04,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530584659] [2024-11-19 13:46:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530584659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211572704] [2024-11-19 13:46:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:04,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:04,059 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) [2024-11-19 13:46:04,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:46:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:04,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:46:04,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:04,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:04,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211572704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:04,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 13:46:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597048882] [2024-11-19 13:46:04,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:04,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:46:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:46:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:46:04,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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) [2024-11-19 13:46:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:06,549 INFO L124 PetriNetUnfolderBase]: 11247/21497 cut-off events. [2024-11-19 13:46:06,549 INFO L125 PetriNetUnfolderBase]: For 54578/55667 co-relation queries the response was YES. [2024-11-19 13:46:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74606 conditions, 21497 events. 11247/21497 cut-off events. For 54578/55667 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 191863 event pairs, 341 based on Foata normal form. 1442/22882 useless extension candidates. Maximal degree in co-relation 74567. Up to 4201 conditions per place. [2024-11-19 13:46:06,684 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2024-11-19 13:46:06,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 480 transitions, 3763 flow [2024-11-19 13:46:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 13:46:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 13:46:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2024-11-19 13:46:06,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2024-11-19 13:46:06,687 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 28 states and 905 transitions. [2024-11-19 13:46:06,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 480 transitions, 3763 flow [2024-11-19 13:46:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 480 transitions, 3411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:46:06,741 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1145 flow [2024-11-19 13:46:06,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1145, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-11-19 13:46:06,741 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-11-19 13:46:06,741 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1145 flow [2024-11-19 13:46:06,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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) [2024-11-19 13:46:06,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:06,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:06,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:06,942 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,SelfDestructingSolverStorable16 [2024-11-19 13:46:06,943 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:06,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1139380794, now seen corresponding path program 1 times [2024-11-19 13:46:06,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:06,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746847457] [2024-11-19 13:46:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746847457] [2024-11-19 13:46:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746847457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255423806] [2024-11-19 13:46:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:06,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:06,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:07,000 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) [2024-11-19 13:46:07,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:46:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:07,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:46:07,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:07,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255423806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:07,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:07,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 13:46:07,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134913183] [2024-11-19 13:46:07,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:07,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:46:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:46:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:46:07,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:07,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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) [2024-11-19 13:46:07,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:07,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:07,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:09,432 INFO L124 PetriNetUnfolderBase]: 10527/20471 cut-off events. [2024-11-19 13:46:09,433 INFO L125 PetriNetUnfolderBase]: For 212868/214080 co-relation queries the response was YES. [2024-11-19 13:46:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87501 conditions, 20471 events. 10527/20471 cut-off events. For 212868/214080 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 184151 event pairs, 413 based on Foata normal form. 1962/22412 useless extension candidates. Maximal degree in co-relation 87444. Up to 5328 conditions per place. [2024-11-19 13:46:09,720 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 163 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-11-19 13:46:09,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 2318 flow [2024-11-19 13:46:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 13:46:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 13:46:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 353 transitions. [2024-11-19 13:46:09,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-11-19 13:46:09,725 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1145 flow. Second operand 12 states and 353 transitions. [2024-11-19 13:46:09,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 2318 flow [2024-11-19 13:46:10,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1963 flow, removed 154 selfloop flow, removed 12 redundant places. [2024-11-19 13:46:10,077 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 1005 flow [2024-11-19 13:46:10,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2024-11-19 13:46:10,078 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-11-19 13:46:10,078 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1005 flow [2024-11-19 13:46:10,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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) [2024-11-19 13:46:10,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:10,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:10,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:10,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:10,279 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:10,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash 580483896, now seen corresponding path program 1 times [2024-11-19 13:46:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:10,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234803212] [2024-11-19 13:46:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:46:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234803212] [2024-11-19 13:46:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234803212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:10,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:46:10,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:46:10,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416998904] [2024-11-19 13:46:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:10,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:46:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:46:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:46:10,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-19 13:46:10,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 1005 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-19 13:46:10,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-19 13:46:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:13,247 INFO L124 PetriNetUnfolderBase]: 16719/28403 cut-off events. [2024-11-19 13:46:13,247 INFO L125 PetriNetUnfolderBase]: For 222920/224114 co-relation queries the response was YES. [2024-11-19 13:46:13,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116070 conditions, 28403 events. 16719/28403 cut-off events. For 222920/224114 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 238679 event pairs, 5881 based on Foata normal form. 972/29009 useless extension candidates. Maximal degree in co-relation 116016. Up to 12541 conditions per place. [2024-11-19 13:46:13,555 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-11-19 13:46:13,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 2029 flow [2024-11-19 13:46:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:46:13,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-19 13:46:13,557 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 1005 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:46:13,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 2029 flow [2024-11-19 13:46:14,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1787 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-11-19 13:46:14,210 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 851 flow [2024-11-19 13:46:14,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-11-19 13:46:14,210 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-19 13:46:14,211 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 851 flow [2024-11-19 13:46:14,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-19 13:46:14,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:14,211 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:14,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 13:46:14,211 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:14,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash 467203270, now seen corresponding path program 1 times [2024-11-19 13:46:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072430396] [2024-11-19 13:46:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:46:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072430396] [2024-11-19 13:46:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072430396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:46:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:46:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741189518] [2024-11-19 13:46:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:14,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:46:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:46:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:46:14,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:46:14,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-19 13:46:14,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:14,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:46:14,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:16,491 INFO L124 PetriNetUnfolderBase]: 13442/23808 cut-off events. [2024-11-19 13:46:16,491 INFO L125 PetriNetUnfolderBase]: For 207598/207598 co-relation queries the response was YES. [2024-11-19 13:46:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95005 conditions, 23808 events. 13442/23808 cut-off events. For 207598/207598 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 201368 event pairs, 2818 based on Foata normal form. 0/23649 useless extension candidates. Maximal degree in co-relation 94954. Up to 10429 conditions per place. [2024-11-19 13:46:16,702 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 239 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-11-19 13:46:16,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 264 transitions, 2747 flow [2024-11-19 13:46:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-19 13:46:16,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-11-19 13:46:16,705 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-11-19 13:46:16,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 264 transitions, 2747 flow [2024-11-19 13:46:17,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 264 transitions, 2675 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:17,081 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 845 flow [2024-11-19 13:46:17,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=845, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-11-19 13:46:17,081 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-19 13:46:17,081 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 845 flow [2024-11-19 13:46:17,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-19 13:46:17,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:17,082 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:17,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 13:46:17,082 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:17,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 749651250, now seen corresponding path program 1 times [2024-11-19 13:46:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:17,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406389505] [2024-11-19 13:46:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:17,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406389505] [2024-11-19 13:46:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406389505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655140715] [2024-11-19 13:46:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:17,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:17,152 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) [2024-11-19 13:46:17,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:46:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:17,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:46:17,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655140715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:17,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 13:46:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982191469] [2024-11-19 13:46:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:17,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 13:46:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 13:46:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-19 13:46:17,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:17,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 845 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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) [2024-11-19 13:46:17,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:17,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:17,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:20,366 INFO L124 PetriNetUnfolderBase]: 14167/27349 cut-off events. [2024-11-19 13:46:20,366 INFO L125 PetriNetUnfolderBase]: For 174170/174170 co-relation queries the response was YES. [2024-11-19 13:46:20,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107269 conditions, 27349 events. 14167/27349 cut-off events. For 174170/174170 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 253429 event pairs, 503 based on Foata normal form. 1216/28508 useless extension candidates. Maximal degree in co-relation 107214. Up to 8281 conditions per place. [2024-11-19 13:46:20,674 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 312 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2024-11-19 13:46:20,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3259 flow [2024-11-19 13:46:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 13:46:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 13:46:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-11-19 13:46:20,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-11-19 13:46:20,676 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 845 flow. Second operand 21 states and 652 transitions. [2024-11-19 13:46:20,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3259 flow [2024-11-19 13:46:21,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 384 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:21,281 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1177 flow [2024-11-19 13:46:21,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1177, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2024-11-19 13:46:21,282 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-19 13:46:21,282 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1177 flow [2024-11-19 13:46:21,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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) [2024-11-19 13:46:21,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:21,283 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:21,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:46:21,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 13:46:21,483 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:21,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash -179984683, now seen corresponding path program 1 times [2024-11-19 13:46:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732398732] [2024-11-19 13:46:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732398732] [2024-11-19 13:46:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732398732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883168107] [2024-11-19 13:46:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:21,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:21,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:21,580 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) [2024-11-19 13:46:21,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:46:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:21,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:46:21,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:21,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883168107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:21,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-19 13:46:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965088683] [2024-11-19 13:46:21,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:21,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 13:46:21,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 13:46:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-19 13:46:21,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:21,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1177 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 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) [2024-11-19 13:46:21,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:21,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:21,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:28,649 INFO L124 PetriNetUnfolderBase]: 27307/52855 cut-off events. [2024-11-19 13:46:28,649 INFO L125 PetriNetUnfolderBase]: For 613306/613306 co-relation queries the response was YES. [2024-11-19 13:46:29,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208907 conditions, 52855 events. 27307/52855 cut-off events. For 613306/613306 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 528859 event pairs, 1331 based on Foata normal form. 3420/56182 useless extension candidates. Maximal degree in co-relation 208844. Up to 7651 conditions per place. [2024-11-19 13:46:29,248 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 529 selfloop transitions, 124 changer transitions 0/669 dead transitions. [2024-11-19 13:46:29,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 669 transitions, 5712 flow [2024-11-19 13:46:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 13:46:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 13:46:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-11-19 13:46:29,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-11-19 13:46:29,251 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1177 flow. Second operand 37 states and 1159 transitions. [2024-11-19 13:46:29,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 669 transitions, 5712 flow [2024-11-19 13:46:30,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 669 transitions, 5598 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-11-19 13:46:30,507 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 2231 flow [2024-11-19 13:46:30,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2231, PETRI_PLACES=175, PETRI_TRANSITIONS=188} [2024-11-19 13:46:30,508 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2024-11-19 13:46:30,508 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 2231 flow [2024-11-19 13:46:30,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 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) [2024-11-19 13:46:30,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:30,509 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:30,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 13:46:30,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:30,711 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:30,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1623322012, now seen corresponding path program 1 times [2024-11-19 13:46:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493305102] [2024-11-19 13:46:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493305102] [2024-11-19 13:46:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493305102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180641234] [2024-11-19 13:46:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:30,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:30,811 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) [2024-11-19 13:46:30,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 13:46:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:30,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:46:30,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:31,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:31,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180641234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:31,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:31,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-19 13:46:31,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902971198] [2024-11-19 13:46:31,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:31,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 13:46:31,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 13:46:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2024-11-19 13:46:31,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:31,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 188 transitions, 2231 flow. Second operand has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 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) [2024-11-19 13:46:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:48,486 INFO L124 PetriNetUnfolderBase]: 54019/105829 cut-off events. [2024-11-19 13:46:48,486 INFO L125 PetriNetUnfolderBase]: For 1771096/1771096 co-relation queries the response was YES.