./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/goblint-regression/09-regions_24-evilcollapse_nr.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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:17:02,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:17:02,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:17:02,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:17:02,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:17:02,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:17:02,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:17:02,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:17:02,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:17:02,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:17:02,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:17:02,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:17:02,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:17:02,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:17:02,292 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:17:02,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:17:02,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:17:02,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:17:02,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:17:02,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:17:02,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:17:02,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:17:02,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:17:02,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:17:02,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:17:02,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:17:02,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:17:02,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:17:02,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:02,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:17:02,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:17:02,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:17:02,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:17:02,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:17:02,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:17:02,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:17:02,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:17:02,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:17:02,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-11-10 22:17:02,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:17:02,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:17:02,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:17:02,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:17:02,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:17:02,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-10 22:17:03,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:17:04,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:17:04,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-10 22:17:04,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd97d1cae/1f23d3b978b3453088efa7b00c575e24/FLAGd0051186a [2024-11-10 22:17:04,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd97d1cae/1f23d3b978b3453088efa7b00c575e24 [2024-11-10 22:17:04,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:17:04,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:17:04,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:04,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:17:04,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:17:04,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:04" (1/1) ... [2024-11-10 22:17:04,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e17450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:04, skipping insertion in model container [2024-11-10 22:17:04,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:04" (1/1) ... [2024-11-10 22:17:04,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:17:04,806 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,807 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,809 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,809 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:04,875 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:17:04,920 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,920 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,921 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,921 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:04,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:05,035 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:17:05,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05 WrapperNode [2024-11-10 22:17:05,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:05,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:05,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:17:05,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:17:05,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,130 INFO L138 Inliner]: procedures = 275, calls = 101, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 227 [2024-11-10 22:17:05,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:05,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:17:05,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:17:05,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:17:05,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,197 INFO L175 MemorySlicer]: Split 86 memory accesses to 1 slices as follows [86]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-10 22:17:05,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,214 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:17:05,235 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:17:05,235 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:17:05,235 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:17:05,236 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (1/1) ... [2024-11-10 22:17:05,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:05,294 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) [2024-11-10 22:17:05,298 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 [2024-11-10 22:17:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-10 22:17:05,334 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-10 22:17:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 22:17:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:17:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:17:05,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:17:05,337 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:17:05,448 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:17:05,450 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:17:05,737 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:17:05,737 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:17:06,154 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:17:06,155 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:17:06,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:06 BoogieIcfgContainer [2024-11-10 22:17:06,155 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:17:06,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:17:06,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:17:06,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:17:06,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:17:04" (1/3) ... [2024-11-10 22:17:06,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657b4dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:06, skipping insertion in model container [2024-11-10 22:17:06,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:05" (2/3) ... [2024-11-10 22:17:06,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657b4dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:06, skipping insertion in model container [2024-11-10 22:17:06,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:06" (3/3) ... [2024-11-10 22:17:06,162 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2024-11-10 22:17:06,175 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:17:06,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:17:06,176 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:17:06,227 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:17:06,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 154 flow [2024-11-10 22:17:06,291 INFO L124 PetriNetUnfolderBase]: 12/71 cut-off events. [2024-11-10 22:17:06,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:06,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 12/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-10 22:17:06,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 154 flow [2024-11-10 22:17:06,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 71 transitions, 148 flow [2024-11-10 22:17:06,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:06,315 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;@51860fe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:06,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 22:17:06,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:06,323 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:17:06,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:06,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:06,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:06,325 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:06,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash -410438993, now seen corresponding path program 1 times [2024-11-10 22:17:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:06,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106167592] [2024-11-10 22:17:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:06,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:17:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3545930] [2024-11-10 22:17:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:06,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:06,569 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) [2024-11-10 22:17:06,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:17:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:06,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:17:06,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:06,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106167592] [2024-11-10 22:17:06,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:17:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3545930] [2024-11-10 22:17:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3545930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:06,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:17:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500076556] [2024-11-10 22:17:06,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:06,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:06,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2024-11-10 22:17:06,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-11-10 22:17:06,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:06,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2024-11-10 22:17:06,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:07,018 INFO L124 PetriNetUnfolderBase]: 246/667 cut-off events. [2024-11-10 22:17:07,020 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:17:07,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 667 events. 246/667 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3824 event pairs, 175 based on Foata normal form. 73/651 useless extension candidates. Maximal degree in co-relation 1031. Up to 398 conditions per place. [2024-11-10 22:17:07,027 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 35 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-10 22:17:07,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 220 flow [2024-11-10 22:17:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-10 22:17:07,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6986301369863014 [2024-11-10 22:17:07,040 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 148 flow. Second operand 3 states and 153 transitions. [2024-11-10 22:17:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 220 flow [2024-11-10 22:17:07,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:07,047 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 150 flow [2024-11-10 22:17:07,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-11-10 22:17:07,052 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-11-10 22:17:07,053 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 150 flow [2024-11-10 22:17:07,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-11-10 22:17:07,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:07,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:07,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:17:07,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-10 22:17:07,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:07,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash 161291857, now seen corresponding path program 1 times [2024-11-10 22:17:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347757798] [2024-11-10 22:17:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347757798] [2024-11-10 22:17:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347757798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:07,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:07,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437264545] [2024-11-10 22:17:07,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:07,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:07,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2024-11-10 22:17:07,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-11-10 22:17:07,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:07,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2024-11-10 22:17:07,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:07,635 INFO L124 PetriNetUnfolderBase]: 246/683 cut-off events. [2024-11-10 22:17:07,635 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:17:07,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 683 events. 246/683 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3941 event pairs, 175 based on Foata normal form. 4/600 useless extension candidates. Maximal degree in co-relation 1078. Up to 404 conditions per place. [2024-11-10 22:17:07,642 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 33 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-10 22:17:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 224 flow [2024-11-10 22:17:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-10 22:17:07,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484018264840182 [2024-11-10 22:17:07,645 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 150 flow. Second operand 3 states and 142 transitions. [2024-11-10 22:17:07,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 224 flow [2024-11-10 22:17:07,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:07,646 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 164 flow [2024-11-10 22:17:07,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-10 22:17:07,647 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-11-10 22:17:07,647 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 164 flow [2024-11-10 22:17:07,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-11-10 22:17:07,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:07,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:07,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:17:07,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:07,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash 705135760, now seen corresponding path program 1 times [2024-11-10 22:17:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:07,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050764171] [2024-11-10 22:17:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050764171] [2024-11-10 22:17:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050764171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:07,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:07,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:07,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720212727] [2024-11-10 22:17:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:07,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:07,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:07,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:07,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:07,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:07,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:07,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:07,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:08,134 INFO L124 PetriNetUnfolderBase]: 246/679 cut-off events. [2024-11-10 22:17:08,134 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-10 22:17:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 679 events. 246/679 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3914 event pairs, 175 based on Foata normal form. 4/600 useless extension candidates. Maximal degree in co-relation 1064. Up to 408 conditions per place. [2024-11-10 22:17:08,137 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 34 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-10 22:17:08,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 240 flow [2024-11-10 22:17:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-10 22:17:08,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2024-11-10 22:17:08,139 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 164 flow. Second operand 4 states and 170 transitions. [2024-11-10 22:17:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 240 flow [2024-11-10 22:17:08,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:08,141 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 180 flow [2024-11-10 22:17:08,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-10 22:17:08,142 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-11-10 22:17:08,142 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 180 flow [2024-11-10 22:17:08,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:08,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:08,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:08,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:17:08,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:08,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1426552958, now seen corresponding path program 1 times [2024-11-10 22:17:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495329226] [2024-11-10 22:17:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:08,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:08,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495329226] [2024-11-10 22:17:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495329226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:08,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116125433] [2024-11-10 22:17:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:08,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:08,227 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) [2024-11-10 22:17:08,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:17:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:08,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:17:08,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:08,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116125433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:08,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:17:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309582337] [2024-11-10 22:17:08,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:08,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:17:08,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:17:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:17:08,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:08,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 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) [2024-11-10 22:17:08,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:08,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:08,925 INFO L124 PetriNetUnfolderBase]: 246/699 cut-off events. [2024-11-10 22:17:08,925 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-10 22:17:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 699 events. 246/699 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4024 event pairs, 175 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 1085. Up to 398 conditions per place. [2024-11-10 22:17:08,928 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 37 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-11-10 22:17:08,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 302 flow [2024-11-10 22:17:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:17:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:17:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 336 transitions. [2024-11-10 22:17:08,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-11-10 22:17:08,933 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 180 flow. Second operand 9 states and 336 transitions. [2024-11-10 22:17:08,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 302 flow [2024-11-10 22:17:08,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:08,936 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 230 flow [2024-11-10 22:17:08,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-11-10 22:17:08,937 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:08,938 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 230 flow [2024-11-10 22:17:08,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 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) [2024-11-10 22:17:08,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:08,938 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:08,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:17:09,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 22:17:09,143 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:09,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:09,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1273524227, now seen corresponding path program 1 times [2024-11-10 22:17:09,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:09,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669627048] [2024-11-10 22:17:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:09,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:09,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669627048] [2024-11-10 22:17:09,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669627048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:09,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574294348] [2024-11-10 22:17:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:09,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:09,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:09,323 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) [2024-11-10 22:17:09,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:17:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:09,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:09,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:09,481 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:09,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574294348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:09,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:09,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:17:09,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631571159] [2024-11-10 22:17:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:09,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:09,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:09,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:09,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:09,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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) [2024-11-10 22:17:09,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:09,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:09,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:09,752 INFO L124 PetriNetUnfolderBase]: 246/695 cut-off events. [2024-11-10 22:17:09,752 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-10 22:17:09,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 695 events. 246/695 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4008 event pairs, 175 based on Foata normal form. 4/616 useless extension candidates. Maximal degree in co-relation 1103. Up to 394 conditions per place. [2024-11-10 22:17:09,755 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 30 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2024-11-10 22:17:09,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 292 flow [2024-11-10 22:17:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:17:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:17:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-11-10 22:17:09,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2024-11-10 22:17:09,758 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 230 flow. Second operand 6 states and 234 transitions. [2024-11-10 22:17:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 292 flow [2024-11-10 22:17:09,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 284 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:09,762 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 224 flow [2024-11-10 22:17:09,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-11-10 22:17:09,763 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:09,764 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 224 flow [2024-11-10 22:17:09,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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) [2024-11-10 22:17:09,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:09,765 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-10 22:17:09,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:17:09,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:09,966 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:09,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1851953269, now seen corresponding path program 1 times [2024-11-10 22:17:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:09,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759478235] [2024-11-10 22:17:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:17:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759478235] [2024-11-10 22:17:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759478235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:10,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976561061] [2024-11-10 22:17:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:10,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:10,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2024-11-10 22:17:10,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:10,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2024-11-10 22:17:10,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:10,352 INFO L124 PetriNetUnfolderBase]: 246/693 cut-off events. [2024-11-10 22:17:10,352 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-10 22:17:10,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 693 events. 246/693 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4001 event pairs, 175 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 1109. Up to 402 conditions per place. [2024-11-10 22:17:10,355 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 29 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-11-10 22:17:10,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 298 flow [2024-11-10 22:17:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-10 22:17:10,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787671232876712 [2024-11-10 22:17:10,356 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 224 flow. Second operand 4 states and 169 transitions. [2024-11-10 22:17:10,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 298 flow [2024-11-10 22:17:10,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 282 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 22:17:10,358 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 232 flow [2024-11-10 22:17:10,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-11-10 22:17:10,359 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2024-11-10 22:17:10,359 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 232 flow [2024-11-10 22:17:10,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:10,361 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:10,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:17:10,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:10,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1610990696, now seen corresponding path program 2 times [2024-11-10 22:17:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641630719] [2024-11-10 22:17:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:10,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:17:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:10,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641630719] [2024-11-10 22:17:10,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641630719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:10,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:10,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638871813] [2024-11-10 22:17:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:10,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:10,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:10,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:10,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:10,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:10,819 INFO L124 PetriNetUnfolderBase]: 246/691 cut-off events. [2024-11-10 22:17:10,819 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-10 22:17:10,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 691 events. 246/691 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3987 event pairs, 175 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 1090. Up to 406 conditions per place. [2024-11-10 22:17:10,822 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 44 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-10 22:17:10,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 392 flow [2024-11-10 22:17:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-10 22:17:10,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5924657534246576 [2024-11-10 22:17:10,824 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 232 flow. Second operand 4 states and 173 transitions. [2024-11-10 22:17:10,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 392 flow [2024-11-10 22:17:10,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 368 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:10,826 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 237 flow [2024-11-10 22:17:10,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-11-10 22:17:10,827 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:10,827 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 237 flow [2024-11-10 22:17:10,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:10,827 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:10,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:17:10,828 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:10,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1629955691, now seen corresponding path program 1 times [2024-11-10 22:17:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:10,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851932938] [2024-11-10 22:17:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:11,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851932938] [2024-11-10 22:17:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851932938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260817213] [2024-11-10 22:17:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:11,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:11,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:11,106 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) [2024-11-10 22:17:11,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:17:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:11,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:17:11,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260817213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:11,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:11,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-10 22:17:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512804915] [2024-11-10 22:17:11,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:11,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:17:11,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:17:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:17:11,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:11,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 237 flow. Second operand has 18 states, 18 states have (on average 33.888888888888886) internal successors, (610), 18 states have internal predecessors, (610), 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) [2024-11-10 22:17:11,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:11,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:12,427 INFO L124 PetriNetUnfolderBase]: 246/747 cut-off events. [2024-11-10 22:17:12,431 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-10 22:17:12,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 747 events. 246/747 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4035 event pairs, 175 based on Foata normal form. 8/674 useless extension candidates. Maximal degree in co-relation 1236. Up to 398 conditions per place. [2024-11-10 22:17:12,435 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 49 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-11-10 22:17:12,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 527 flow [2024-11-10 22:17:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:17:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:17:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 546 transitions. [2024-11-10 22:17:12,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986301369863014 [2024-11-10 22:17:12,440 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 237 flow. Second operand 15 states and 546 transitions. [2024-11-10 22:17:12,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 527 flow [2024-11-10 22:17:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:12,446 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 359 flow [2024-11-10 22:17:12,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=359, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-11-10 22:17:12,447 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places. [2024-11-10 22:17:12,447 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 359 flow [2024-11-10 22:17:12,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.888888888888886) internal successors, (610), 18 states have internal predecessors, (610), 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) [2024-11-10 22:17:12,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:12,448 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 9, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:12,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:17:12,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:12,648 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:12,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash -93115191, now seen corresponding path program 2 times [2024-11-10 22:17:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198825163] [2024-11-10 22:17:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198825163] [2024-11-10 22:17:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198825163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117820794] [2024-11-10 22:17:13,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:17:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:13,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:13,400 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) [2024-11-10 22:17:13,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:17:13,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:17:13,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:13,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 22:17:13,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:13,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:13,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117820794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:13,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:13,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-10 22:17:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519538240] [2024-11-10 22:17:13,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:13,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:17:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:17:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:17:14,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:14,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 359 flow. Second operand has 34 states, 34 states have (on average 33.705882352941174) internal successors, (1146), 34 states have internal predecessors, (1146), 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) [2024-11-10 22:17:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:14,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:15,545 INFO L124 PetriNetUnfolderBase]: 246/859 cut-off events. [2024-11-10 22:17:15,545 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2024-11-10 22:17:15,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 859 events. 246/859 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4057 event pairs, 175 based on Foata normal form. 16/794 useless extension candidates. Maximal degree in co-relation 1510. Up to 398 conditions per place. [2024-11-10 22:17:15,549 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 73 selfloop transitions, 31 changer transitions 0/134 dead transitions. [2024-11-10 22:17:15,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 1031 flow [2024-11-10 22:17:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:17:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:17:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1102 transitions. [2024-11-10 22:17:15,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4869642068051259 [2024-11-10 22:17:15,552 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 359 flow. Second operand 31 states and 1102 transitions. [2024-11-10 22:17:15,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 1031 flow [2024-11-10 22:17:15,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 134 transitions, 997 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:15,556 INFO L231 Difference]: Finished difference. Result has 135 places, 97 transitions, 615 flow [2024-11-10 22:17:15,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=615, PETRI_PLACES=135, PETRI_TRANSITIONS=97} [2024-11-10 22:17:15,557 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-10 22:17:15,557 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 97 transitions, 615 flow [2024-11-10 22:17:15,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 33.705882352941174) internal successors, (1146), 34 states have internal predecessors, (1146), 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) [2024-11-10 22:17:15,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:15,558 INFO L204 CegarLoopForPetriNet]: trace histogram [18, 17, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:15,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:17:15,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:15,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:15,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1353728207, now seen corresponding path program 3 times [2024-11-10 22:17:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028144025] [2024-11-10 22:17:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 141 proven. 660 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:17,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028144025] [2024-11-10 22:17:17,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028144025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122425733] [2024-11-10 22:17:17,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:17:17,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:17,419 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) [2024-11-10 22:17:17,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:17:17,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 22:17:17,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:17,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:17:17,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-10 22:17:18,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122425733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:18,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [33] total 39 [2024-11-10 22:17:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984091319] [2024-11-10 22:17:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:18,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:17:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:17:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1174, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 22:17:18,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-10 22:17:18,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 97 transitions, 615 flow. Second operand has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 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) [2024-11-10 22:17:18,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:18,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-10 22:17:18,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:18,583 INFO L124 PetriNetUnfolderBase]: 246/844 cut-off events. [2024-11-10 22:17:18,583 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-10 22:17:18,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 844 events. 246/844 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3974 event pairs, 175 based on Foata normal form. 15/778 useless extension candidates. Maximal degree in co-relation 1480. Up to 389 conditions per place. [2024-11-10 22:17:18,588 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 58 selfloop transitions, 37 changer transitions 0/127 dead transitions. [2024-11-10 22:17:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 127 transitions, 1206 flow [2024-11-10 22:17:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:17:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:17:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-11-10 22:17:18,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46986301369863015 [2024-11-10 22:17:18,590 INFO L175 Difference]: Start difference. First operand has 135 places, 97 transitions, 615 flow. Second operand 10 states and 343 transitions. [2024-11-10 22:17:18,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 127 transitions, 1206 flow [2024-11-10 22:17:18,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1154 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 22:17:18,596 INFO L231 Difference]: Finished difference. Result has 135 places, 126 transitions, 1134 flow [2024-11-10 22:17:18,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1134, PETRI_PLACES=135, PETRI_TRANSITIONS=126} [2024-11-10 22:17:18,597 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-10 22:17:18,597 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 126 transitions, 1134 flow [2024-11-10 22:17:18,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 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) [2024-11-10 22:17:18,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:18,597 INFO L204 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:18,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:17:18,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:18,798 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:18,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash 984099067, now seen corresponding path program 1 times [2024-11-10 22:17:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539257695] [2024-11-10 22:17:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539257695] [2024-11-10 22:17:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539257695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587248996] [2024-11-10 22:17:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:20,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:20,322 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) [2024-11-10 22:17:20,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:17:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:20,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 22:17:20,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:21,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587248996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:21,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:21,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-11-10 22:17:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231665490] [2024-11-10 22:17:21,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:21,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-10 22:17:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-10 22:17:21,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2024-11-10 22:17:22,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:22,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 126 transitions, 1134 flow. Second operand has 63 states, 63 states have (on average 33.63492063492063) internal successors, (2119), 63 states have internal predecessors, (2119), 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) [2024-11-10 22:17:22,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:22,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:22,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:25,223 INFO L124 PetriNetUnfolderBase]: 246/1039 cut-off events. [2024-11-10 22:17:25,223 INFO L125 PetriNetUnfolderBase]: For 8721/8721 co-relation queries the response was YES. [2024-11-10 22:17:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1039 events. 246/1039 cut-off events. For 8721/8721 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4026 event pairs, 175 based on Foata normal form. 30/988 useless extension candidates. Maximal degree in co-relation 2074. Up to 398 conditions per place. [2024-11-10 22:17:25,232 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 90 selfloop transitions, 121 changer transitions 0/240 dead transitions. [2024-11-10 22:17:25,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 3058 flow [2024-11-10 22:17:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-10 22:17:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-10 22:17:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2115 transitions. [2024-11-10 22:17:25,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47496070065124635 [2024-11-10 22:17:25,240 INFO L175 Difference]: Start difference. First operand has 135 places, 126 transitions, 1134 flow. Second operand 61 states and 2115 transitions. [2024-11-10 22:17:25,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 3058 flow [2024-11-10 22:17:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 240 transitions, 3046 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:25,257 INFO L231 Difference]: Finished difference. Result has 207 places, 187 transitions, 2442 flow [2024-11-10 22:17:25,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=2442, PETRI_PLACES=207, PETRI_TRANSITIONS=187} [2024-11-10 22:17:25,258 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 141 predicate places. [2024-11-10 22:17:25,258 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 187 transitions, 2442 flow [2024-11-10 22:17:25,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 33.63492063492063) internal successors, (2119), 63 states have internal predecessors, (2119), 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) [2024-11-10 22:17:25,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:25,260 INFO L204 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 31, 31, 31, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:25,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:17:25,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:25,464 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:25,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash 26757816, now seen corresponding path program 2 times [2024-11-10 22:17:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259231525] [2024-11-10 22:17:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:18:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597101146] [2024-11-10 22:18:32,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:18:32,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:32,837 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) [2024-11-10 22:18:32,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:18:35,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:18:35,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:18:35,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:18:35,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 2 proven. 306 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2024-11-10 22:18:35,281 INFO L311 TraceCheckSpWp]: Computing backward predicates...