./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:35:51,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:35:51,606 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:35:51,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:35:51,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:35:51,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:35:51,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:35:51,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:35:51,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:35:51,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:35:51,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:35:51,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:35:51,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:35:51,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:35:51,641 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:35:51,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:35:51,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:35:51,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:35:51,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:35:51,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:35:51,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:35:51,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:35:51,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:35:51,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:35:51,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:35:51,647 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:35:51,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:35:51,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:35:51,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:35:51,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:35:51,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:35:51,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:35:51,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:35:51,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:35:51,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:35:51,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:35:51,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:35:51,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:35:51,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:35:51,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:35:51,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:35:51,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:35:51,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:35:51,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:35:51,652 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2024-10-24 23:35:51,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:35:51,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:35:51,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:35:51,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:35:51,875 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:35:51,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-24 23:35:53,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:35:53,460 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:35:53,461 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-24 23:35:53,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61949c756/5df34f55f8fe44f9a04c51d05b540fb9/FLAGe5bc2dd6c [2024-10-24 23:35:53,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61949c756/5df34f55f8fe44f9a04c51d05b540fb9 [2024-10-24 23:35:53,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:35:53,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:35:53,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:35:53,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:35:53,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:35:53,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:35:53" (1/1) ... [2024-10-24 23:35:53,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f584b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:53, skipping insertion in model container [2024-10-24 23:35:53,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:35:53" (1/1) ... [2024-10-24 23:35:53,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:35:54,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:35:54,270 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:35:54,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:35:54,432 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:35:54,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54 WrapperNode [2024-10-24 23:35:54,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:35:54,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:54,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:35:54,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:35:54,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,480 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 231 [2024-10-24 23:35:54,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:54,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:35:54,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:35:54,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:35:54,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,504 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 5, 11, 2]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 6 writes are split as follows [0, 0, 5, 1]. [2024-10-24 23:35:54,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:35:54,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:35:54,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:35:54,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:35:54,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (1/1) ... [2024-10-24 23:35:54,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:35:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:54,567 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) [2024-10-24 23:35:54,569 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 [2024-10-24 23:35:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 23:35:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 23:35:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:35:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:35:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:35:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:35:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:35:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 23:35:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:35:54,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:35:54,626 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:35:54,841 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:35:54,843 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:35:55,065 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:35:55,065 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:35:55,193 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:35:55,193 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-24 23:35:55,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:55 BoogieIcfgContainer [2024-10-24 23:35:55,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:35:55,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:35:55,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:35:55,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:35:55,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:35:53" (1/3) ... [2024-10-24 23:35:55,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcff748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:55, skipping insertion in model container [2024-10-24 23:35:55,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:54" (2/3) ... [2024-10-24 23:35:55,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcff748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:55, skipping insertion in model container [2024-10-24 23:35:55,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:55" (3/3) ... [2024-10-24 23:35:55,201 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2024-10-24 23:35:55,216 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:35:55,217 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-24 23:35:55,217 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:35:55,264 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 23:35:55,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 111 transitions, 229 flow [2024-10-24 23:35:55,344 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2024-10-24 23:35:55,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:35:55,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 35/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 600 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2024-10-24 23:35:55,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 111 transitions, 229 flow [2024-10-24 23:35:55,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 110 transitions, 227 flow [2024-10-24 23:35:55,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:55,365 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;@6634b7e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:55,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-24 23:35:55,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:55,367 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:35:55,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:55,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:55,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:35:55,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:55,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 640432, now seen corresponding path program 1 times [2024-10-24 23:35:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463095001] [2024-10-24 23:35:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463095001] [2024-10-24 23:35:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463095001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:55,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:55,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656755174] [2024-10-24 23:35:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:55,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:55,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:55,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-10-24 23:35:55,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:55,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:55,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:56,126 INFO L124 PetriNetUnfolderBase]: 440/1383 cut-off events. [2024-10-24 23:35:56,126 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:35:56,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1383 events. 440/1383 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9273 event pairs, 396 based on Foata normal form. 269/1483 useless extension candidates. Maximal degree in co-relation 2180. Up to 881 conditions per place. [2024-10-24 23:35:56,135 INFO L140 encePairwiseOnDemand]: 85/111 looper letters, 47 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-10-24 23:35:56,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 291 flow [2024-10-24 23:35:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-10-24 23:35:56,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5427927927927928 [2024-10-24 23:35:56,148 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 227 flow. Second operand 4 states and 241 transitions. [2024-10-24 23:35:56,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 291 flow [2024-10-24 23:35:56,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:56,155 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 211 flow [2024-10-24 23:35:56,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-10-24 23:35:56,161 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2024-10-24 23:35:56,163 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 211 flow [2024-10-24 23:35:56,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-10-24 23:35:56,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:56,164 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:35:56,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:35:56,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:56,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1899886726, now seen corresponding path program 1 times [2024-10-24 23:35:56,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:56,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114418895] [2024-10-24 23:35:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:56,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114418895] [2024-10-24 23:35:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114418895] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098177511] [2024-10-24 23:35:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:56,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:56,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:56,290 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) [2024-10-24 23:35:56,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:35:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:56,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:35:56,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:56,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:35:56,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098177511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:56,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:35:56,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:35:56,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551290420] [2024-10-24 23:35:56,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:56,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:35:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:35:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:35:56,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:56,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-10-24 23:35:56,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:56,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:56,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:56,604 INFO L124 PetriNetUnfolderBase]: 440/1382 cut-off events. [2024-10-24 23:35:56,605 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:35:56,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1382 events. 440/1382 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9288 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2263. Up to 876 conditions per place. [2024-10-24 23:35:56,611 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 43 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-24 23:35:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 305 flow [2024-10-24 23:35:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:35:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:35:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-10-24 23:35:56,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-10-24 23:35:56,616 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 211 flow. Second operand 6 states and 302 transitions. [2024-10-24 23:35:56,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 305 flow [2024-10-24 23:35:56,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:35:56,618 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 217 flow [2024-10-24 23:35:56,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-10-24 23:35:56,620 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2024-10-24 23:35:56,620 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 217 flow [2024-10-24 23:35:56,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-10-24 23:35:56,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:56,621 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:35:56,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:35:56,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:56,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:56,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1233052986, now seen corresponding path program 1 times [2024-10-24 23:35:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15634193] [2024-10-24 23:35:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:35:56,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15634193] [2024-10-24 23:35:56,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15634193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:56,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:56,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:56,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604655044] [2024-10-24 23:35:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:56,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:35:56,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:35:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:35:56,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-10-24 23:35:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:57,129 INFO L124 PetriNetUnfolderBase]: 440/1381 cut-off events. [2024-10-24 23:35:57,133 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-24 23:35:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 1381 events. 440/1381 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9260 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2259. Up to 879 conditions per place. [2024-10-24 23:35:57,142 INFO L140 encePairwiseOnDemand]: 108/111 looper letters, 44 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-10-24 23:35:57,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 309 flow [2024-10-24 23:35:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:35:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:35:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-10-24 23:35:57,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-10-24 23:35:57,147 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 217 flow. Second operand 3 states and 173 transitions. [2024-10-24 23:35:57,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 309 flow [2024-10-24 23:35:57,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 287 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 23:35:57,149 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 199 flow [2024-10-24 23:35:57,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-10-24 23:35:57,150 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2024-10-24 23:35:57,150 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 199 flow [2024-10-24 23:35:57,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-10-24 23:35:57,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:57,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:57,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:35:57,150 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:57,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 447018931, now seen corresponding path program 1 times [2024-10-24 23:35:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560877095] [2024-10-24 23:35:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560877095] [2024-10-24 23:35:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560877095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:57,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877623825] [2024-10-24 23:35:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:57,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:57,205 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) [2024-10-24 23:35:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:35:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:57,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:35:57,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:57,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:35:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:57,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877623825] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:35:57,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:35:57,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-24 23:35:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772872720] [2024-10-24 23:35:57,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:35:57,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:35:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:35:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:35:57,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:57,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-10-24 23:35:57,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:57,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:57,480 INFO L124 PetriNetUnfolderBase]: 440/1385 cut-off events. [2024-10-24 23:35:57,481 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 23:35:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1385 events. 440/1385 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9247 event pairs, 396 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 2252. Up to 877 conditions per place. [2024-10-24 23:35:57,485 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-10-24 23:35:57,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 316 flow [2024-10-24 23:35:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:35:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:35:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 347 transitions. [2024-10-24 23:35:57,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4465894465894466 [2024-10-24 23:35:57,487 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 199 flow. Second operand 7 states and 347 transitions. [2024-10-24 23:35:57,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 316 flow [2024-10-24 23:35:57,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:35:57,489 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 225 flow [2024-10-24 23:35:57,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-10-24 23:35:57,489 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-10-24 23:35:57,490 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 225 flow [2024-10-24 23:35:57,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-10-24 23:35:57,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:57,490 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:57,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:35:57,690 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 [2024-10-24 23:35:57,691 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:57,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1000984563, now seen corresponding path program 2 times [2024-10-24 23:35:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650201642] [2024-10-24 23:35:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 23:35:57,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650201642] [2024-10-24 23:35:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650201642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:57,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:57,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:35:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232102394] [2024-10-24 23:35:57,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:57,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:57,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 111 [2024-10-24 23:35:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-10-24 23:35:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 111 [2024-10-24 23:35:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:57,932 INFO L124 PetriNetUnfolderBase]: 436/1245 cut-off events. [2024-10-24 23:35:57,932 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 23:35:57,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1245 events. 436/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8142 event pairs, 0 based on Foata normal form. 19/1138 useless extension candidates. Maximal degree in co-relation 2112. Up to 824 conditions per place. [2024-10-24 23:35:57,936 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 86 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-10-24 23:35:57,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 473 flow [2024-10-24 23:35:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-24 23:35:57,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653153153153153 [2024-10-24 23:35:57,938 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 225 flow. Second operand 4 states and 251 transitions. [2024-10-24 23:35:57,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 473 flow [2024-10-24 23:35:57,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:35:57,940 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 227 flow [2024-10-24 23:35:57,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-24 23:35:57,941 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-10-24 23:35:57,941 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 227 flow [2024-10-24 23:35:57,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-10-24 23:35:57,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:57,942 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:57,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:35:57,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash 373807463, now seen corresponding path program 1 times [2024-10-24 23:35:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:57,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844509631] [2024-10-24 23:35:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:58,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844509631] [2024-10-24 23:35:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844509631] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182674449] [2024-10-24 23:35:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:58,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:58,046 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) [2024-10-24 23:35:58,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:35:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:58,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:35:58,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:58,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:35:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182674449] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:35:58,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:35:58,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-24 23:35:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353355306] [2024-10-24 23:35:58,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:35:58,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:35:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:35:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:35:58,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:58,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-10-24 23:35:58,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:58,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:58,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:58,419 INFO L124 PetriNetUnfolderBase]: 439/1337 cut-off events. [2024-10-24 23:35:58,419 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-24 23:35:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1337 events. 439/1337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8729 event pairs, 396 based on Foata normal form. 4/1204 useless extension candidates. Maximal degree in co-relation 2217. Up to 859 conditions per place. [2024-10-24 23:35:58,423 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-10-24 23:35:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 393 flow [2024-10-24 23:35:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:35:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:35:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 693 transitions. [2024-10-24 23:35:58,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-10-24 23:35:58,425 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 227 flow. Second operand 15 states and 693 transitions. [2024-10-24 23:35:58,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 393 flow [2024-10-24 23:35:58,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:35:58,428 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 318 flow [2024-10-24 23:35:58,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-10-24 23:35:58,428 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2024-10-24 23:35:58,429 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 318 flow [2024-10-24 23:35:58,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-10-24 23:35:58,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:58,429 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:58,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:35:58,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:58,634 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:58,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1850087193, now seen corresponding path program 2 times [2024-10-24 23:35:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099545345] [2024-10-24 23:35:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:58,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:58,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099545345] [2024-10-24 23:35:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099545345] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:58,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028846982] [2024-10-24 23:35:58,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:35:58,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:58,919 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) [2024-10-24 23:35:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:35:58,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:35:58,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:35:58,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:35:58,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:59,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:35:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028846982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:35:59,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:35:59,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-24 23:35:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137577214] [2024-10-24 23:35:59,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:35:59,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 23:35:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 23:35:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-24 23:35:59,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-10-24 23:35:59,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 318 flow. Second operand has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-10-24 23:35:59,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:59,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-10-24 23:35:59,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:59,490 INFO L124 PetriNetUnfolderBase]: 439/1346 cut-off events. [2024-10-24 23:35:59,491 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-10-24 23:35:59,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1346 events. 439/1346 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8737 event pairs, 396 based on Foata normal form. 3/1212 useless extension candidates. Maximal degree in co-relation 2200. Up to 859 conditions per place. [2024-10-24 23:35:59,495 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-10-24 23:35:59,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 502 flow [2024-10-24 23:35:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 23:35:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 23:35:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 950 transitions. [2024-10-24 23:35:59,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40755040755040756 [2024-10-24 23:35:59,497 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 318 flow. Second operand 21 states and 950 transitions. [2024-10-24 23:35:59,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 502 flow [2024-10-24 23:35:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 492 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 23:35:59,500 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 419 flow [2024-10-24 23:35:59,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=419, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2024-10-24 23:35:59,500 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2024-10-24 23:35:59,501 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 419 flow [2024-10-24 23:35:59,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-10-24 23:35:59,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:59,501 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:59,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:35:59,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:59,706 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-24 23:35:59,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1145223313, now seen corresponding path program 3 times [2024-10-24 23:35:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20877046] [2024-10-24 23:35:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:59,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:35:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:59,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:35:59,783 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:35:59,784 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-10-24 23:35:59,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-10-24 23:35:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-10-24 23:35:59,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-10-24 23:35:59,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-10-24 23:35:59,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-10-24 23:35:59,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-10-24 23:35:59,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-10-24 23:35:59,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-10-24 23:35:59,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-10-24 23:35:59,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-10-24 23:35:59,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-10-24 23:35:59,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:35:59,791 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-10-24 23:35:59,793 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:35:59,793 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 23:35:59,832 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:35:59,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 157 transitions, 330 flow [2024-10-24 23:35:59,846 INFO L124 PetriNetUnfolderBase]: 59/270 cut-off events. [2024-10-24 23:35:59,846 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 23:35:59,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 59/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1213 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2024-10-24 23:35:59,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 157 transitions, 330 flow [2024-10-24 23:35:59,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 157 transitions, 330 flow [2024-10-24 23:35:59,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:59,853 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;@6634b7e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:59,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-24 23:35:59,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:59,853 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:35:59,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:59,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:59,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:35:59,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:35:59,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash 796333, now seen corresponding path program 1 times [2024-10-24 23:35:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816128627] [2024-10-24 23:35:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816128627] [2024-10-24 23:35:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816128627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109887741] [2024-10-24 23:35:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:59,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:59,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:35:59,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 157 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-10-24 23:35:59,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:59,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:35:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:02,419 INFO L124 PetriNetUnfolderBase]: 17181/36817 cut-off events. [2024-10-24 23:36:02,425 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-24 23:36:02,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62565 conditions, 36817 events. 17181/36817 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375319 event pairs, 15876 based on Foata normal form. 8193/40952 useless extension candidates. Maximal degree in co-relation 50867. Up to 25644 conditions per place. [2024-10-24 23:36:02,776 INFO L140 encePairwiseOnDemand]: 121/157 looper letters, 68 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-10-24 23:36:02,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 416 flow [2024-10-24 23:36:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:36:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:36:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-10-24 23:36:02,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2024-10-24 23:36:02,778 INFO L175 Difference]: Start difference. First operand has 126 places, 157 transitions, 330 flow. Second operand 4 states and 336 transitions. [2024-10-24 23:36:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 416 flow [2024-10-24 23:36:02,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:36:02,780 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 294 flow [2024-10-24 23:36:02,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-10-24 23:36:02,781 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2024-10-24 23:36:02,781 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 294 flow [2024-10-24 23:36:02,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-10-24 23:36:02,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:02,782 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:36:02,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:36:02,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:02,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2045445274, now seen corresponding path program 1 times [2024-10-24 23:36:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491213119] [2024-10-24 23:36:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491213119] [2024-10-24 23:36:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491213119] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:36:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908299806] [2024-10-24 23:36:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:36:02,817 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) [2024-10-24 23:36:02,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:36:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:02,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:36:02,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:36:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:02,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:36:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908299806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:36:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:36:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171439360] [2024-10-24 23:36:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:02,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:36:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:36:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:36:02,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:02,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-10-24 23:36:02,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:02,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:02,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:05,506 INFO L124 PetriNetUnfolderBase]: 17181/36816 cut-off events. [2024-10-24 23:36:05,507 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-24 23:36:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62575 conditions, 36816 events. 17181/36816 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375386 event pairs, 15876 based on Foata normal form. 1/32759 useless extension candidates. Maximal degree in co-relation 62556. Up to 25639 conditions per place. [2024-10-24 23:36:05,630 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 64 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-10-24 23:36:05,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 430 flow [2024-10-24 23:36:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:36:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:36:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-10-24 23:36:05,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4447983014861996 [2024-10-24 23:36:05,632 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 294 flow. Second operand 6 states and 419 transitions. [2024-10-24 23:36:05,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 430 flow [2024-10-24 23:36:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:36:05,635 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 300 flow [2024-10-24 23:36:05,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2024-10-24 23:36:05,636 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2024-10-24 23:36:05,636 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 300 flow [2024-10-24 23:36:05,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-10-24 23:36:05,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:05,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:36:05,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:36:05,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 23:36:05,841 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:05,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1015706755, now seen corresponding path program 1 times [2024-10-24 23:36:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:05,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659521938] [2024-10-24 23:36:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:36:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659521938] [2024-10-24 23:36:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659521938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:05,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:05,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:36:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96891177] [2024-10-24 23:36:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:05,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:36:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:36:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:36:05,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:05,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-24 23:36:05,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:05,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:05,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:08,084 INFO L124 PetriNetUnfolderBase]: 17181/36815 cut-off events. [2024-10-24 23:36:08,085 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-10-24 23:36:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62577 conditions, 36815 events. 17181/36815 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375379 event pairs, 15876 based on Foata normal form. 1/32759 useless extension candidates. Maximal degree in co-relation 62552. Up to 25642 conditions per place. [2024-10-24 23:36:08,222 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 65 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-24 23:36:08,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 434 flow [2024-10-24 23:36:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:36:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:36:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-10-24 23:36:08,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138004246284501 [2024-10-24 23:36:08,225 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 300 flow. Second operand 3 states and 242 transitions. [2024-10-24 23:36:08,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 434 flow [2024-10-24 23:36:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 412 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 23:36:08,228 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 282 flow [2024-10-24 23:36:08,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2024-10-24 23:36:08,228 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2024-10-24 23:36:08,229 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 282 flow [2024-10-24 23:36:08,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-24 23:36:08,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:08,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:08,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:36:08,231 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:08,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1136627452, now seen corresponding path program 1 times [2024-10-24 23:36:08,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280132027] [2024-10-24 23:36:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280132027] [2024-10-24 23:36:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280132027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:36:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252554848] [2024-10-24 23:36:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:08,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:36:08,275 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) [2024-10-24 23:36:08,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:36:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:08,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:36:08,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:36:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:08,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:36:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252554848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:36:08,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:36:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-24 23:36:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390405727] [2024-10-24 23:36:08,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:36:08,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:36:08,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:36:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:36:08,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:08,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-10-24 23:36:08,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:08,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:11,130 INFO L124 PetriNetUnfolderBase]: 17181/36819 cut-off events. [2024-10-24 23:36:11,131 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-24 23:36:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62580 conditions, 36819 events. 17181/36819 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375315 event pairs, 15876 based on Foata normal form. 2/32765 useless extension candidates. Maximal degree in co-relation 62545. Up to 25640 conditions per place. [2024-10-24 23:36:11,289 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 65 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2024-10-24 23:36:11,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 441 flow [2024-10-24 23:36:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:36:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:36:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 480 transitions. [2024-10-24 23:36:11,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4367606915377616 [2024-10-24 23:36:11,292 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 282 flow. Second operand 7 states and 480 transitions. [2024-10-24 23:36:11,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 441 flow [2024-10-24 23:36:11,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:36:11,295 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 308 flow [2024-10-24 23:36:11,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2024-10-24 23:36:11,296 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2024-10-24 23:36:11,296 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 308 flow [2024-10-24 23:36:11,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-10-24 23:36:11,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:11,297 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:11,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:36:11,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:11,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:11,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 619880540, now seen corresponding path program 2 times [2024-10-24 23:36:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202042635] [2024-10-24 23:36:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 23:36:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202042635] [2024-10-24 23:36:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202042635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:11,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:11,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:36:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963426795] [2024-10-24 23:36:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:11,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:36:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:36:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:36:11,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-10-24 23:36:11,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-10-24 23:36:11,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:11,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-10-24 23:36:11,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:14,005 INFO L124 PetriNetUnfolderBase]: 19364/41344 cut-off events. [2024-10-24 23:36:14,006 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-24 23:36:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70373 conditions, 41344 events. 19364/41344 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 427115 event pairs, 11718 based on Foata normal form. 19/36807 useless extension candidates. Maximal degree in co-relation 70333. Up to 28850 conditions per place. [2024-10-24 23:36:14,383 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 111 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2024-10-24 23:36:14,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 614 flow [2024-10-24 23:36:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:36:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:36:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2024-10-24 23:36:14,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5414012738853503 [2024-10-24 23:36:14,386 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 308 flow. Second operand 4 states and 340 transitions. [2024-10-24 23:36:14,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 614 flow [2024-10-24 23:36:14,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:36:14,389 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 328 flow [2024-10-24 23:36:14,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2024-10-24 23:36:14,390 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2024-10-24 23:36:14,390 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 328 flow [2024-10-24 23:36:14,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-10-24 23:36:14,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:14,390 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:14,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:36:14,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:14,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash -208909552, now seen corresponding path program 1 times [2024-10-24 23:36:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:14,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843699091] [2024-10-24 23:36:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843699091] [2024-10-24 23:36:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843699091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:36:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463885050] [2024-10-24 23:36:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:14,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:36:14,538 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) [2024-10-24 23:36:14,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:36:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:14,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:36:14,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:36:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:14,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:36:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463885050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:36:14,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:36:14,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-24 23:36:14,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229973325] [2024-10-24 23:36:14,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:36:14,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:36:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:36:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:36:14,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:14,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 328 flow. Second operand has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-10-24 23:36:14,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:14,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:14,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:17,650 INFO L124 PetriNetUnfolderBase]: 17179/36918 cut-off events. [2024-10-24 23:36:17,650 INFO L125 PetriNetUnfolderBase]: For 904/1609 co-relation queries the response was YES. [2024-10-24 23:36:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63499 conditions, 36918 events. 17179/36918 cut-off events. For 904/1609 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 376348 event pairs, 15876 based on Foata normal form. 21/33232 useless extension candidates. Maximal degree in co-relation 63422. Up to 25634 conditions per place. [2024-10-24 23:36:17,777 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 66 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-10-24 23:36:17,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 538 flow [2024-10-24 23:36:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:36:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:36:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 954 transitions. [2024-10-24 23:36:17,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050955414012739 [2024-10-24 23:36:17,780 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 328 flow. Second operand 15 states and 954 transitions. [2024-10-24 23:36:17,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 538 flow [2024-10-24 23:36:17,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:36:17,783 INFO L231 Difference]: Finished difference. Result has 155 places, 140 transitions, 423 flow [2024-10-24 23:36:17,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=423, PETRI_PLACES=155, PETRI_TRANSITIONS=140} [2024-10-24 23:36:17,784 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2024-10-24 23:36:17,784 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 140 transitions, 423 flow [2024-10-24 23:36:17,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-10-24 23:36:17,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:17,784 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:17,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:36:17,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:17,989 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:17,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash -990349232, now seen corresponding path program 2 times [2024-10-24 23:36:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:17,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756302081] [2024-10-24 23:36:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756302081] [2024-10-24 23:36:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756302081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:36:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893787554] [2024-10-24 23:36:18,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:36:18,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:36:18,171 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) [2024-10-24 23:36:18,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:36:18,251 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:36:18,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:36:18,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:36:18,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:36:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:18,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:36:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:36:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893787554] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:36:18,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:36:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-24 23:36:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39933598] [2024-10-24 23:36:18,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:36:18,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 23:36:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 23:36:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-24 23:36:18,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:18,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 140 transitions, 423 flow. Second operand has 23 states, 23 states have (on average 59.26086956521739) internal successors, (1363), 23 states have internal predecessors, (1363), 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) [2024-10-24 23:36:18,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:18,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:18,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:21,856 INFO L124 PetriNetUnfolderBase]: 17179/36927 cut-off events. [2024-10-24 23:36:21,856 INFO L125 PetriNetUnfolderBase]: For 985/1690 co-relation queries the response was YES. [2024-10-24 23:36:21,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63544 conditions, 36927 events. 17179/36927 cut-off events. For 985/1690 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 376398 event pairs, 15876 based on Foata normal form. 20/33240 useless extension candidates. Maximal degree in co-relation 63407. Up to 25634 conditions per place. [2024-10-24 23:36:22,096 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 66 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2024-10-24 23:36:22,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 146 transitions, 651 flow [2024-10-24 23:36:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 23:36:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 23:36:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1307 transitions. [2024-10-24 23:36:22,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3964209887776767 [2024-10-24 23:36:22,100 INFO L175 Difference]: Start difference. First operand has 155 places, 140 transitions, 423 flow. Second operand 21 states and 1307 transitions. [2024-10-24 23:36:22,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 146 transitions, 651 flow [2024-10-24 23:36:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 146 transitions, 641 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 23:36:22,105 INFO L231 Difference]: Finished difference. Result has 174 places, 146 transitions, 524 flow [2024-10-24 23:36:22,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=524, PETRI_PLACES=174, PETRI_TRANSITIONS=146} [2024-10-24 23:36:22,106 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 48 predicate places. [2024-10-24 23:36:22,106 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 146 transitions, 524 flow [2024-10-24 23:36:22,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.26086956521739) internal successors, (1363), 23 states have internal predecessors, (1363), 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) [2024-10-24 23:36:22,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:22,106 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:22,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:36:22,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:36:22,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:22,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1362213993, now seen corresponding path program 3 times [2024-10-24 23:36:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:22,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023475349] [2024-10-24 23:36:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:36:22,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:22,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023475349] [2024-10-24 23:36:22,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023475349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:36:22,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676804257] [2024-10-24 23:36:22,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 23:36:22,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:36:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:36:22,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:36:22,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:36:22,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 23:36:22,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:36:22,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:36:22,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:36:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:36:22,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:36:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676804257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:22,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:36:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-24 23:36:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753389308] [2024-10-24 23:36:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:22,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:36:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:36:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:36:22,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2024-10-24 23:36:22,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 146 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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) [2024-10-24 23:36:22,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:22,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2024-10-24 23:36:22,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:25,553 INFO L124 PetriNetUnfolderBase]: 18924/35988 cut-off events. [2024-10-24 23:36:25,553 INFO L125 PetriNetUnfolderBase]: For 1038/1038 co-relation queries the response was YES. [2024-10-24 23:36:25,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66191 conditions, 35988 events. 18924/35988 cut-off events. For 1038/1038 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 338444 event pairs, 1746 based on Foata normal form. 361/32981 useless extension candidates. Maximal degree in co-relation 66030. Up to 22257 conditions per place. [2024-10-24 23:36:25,776 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 157 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2024-10-24 23:36:25,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 217 transitions, 990 flow [2024-10-24 23:36:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:36:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:36:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2024-10-24 23:36:25,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843949044585988 [2024-10-24 23:36:25,778 INFO L175 Difference]: Start difference. First operand has 174 places, 146 transitions, 524 flow. Second operand 4 states and 367 transitions. [2024-10-24 23:36:25,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 217 transitions, 990 flow [2024-10-24 23:36:25,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 947 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-10-24 23:36:25,783 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 489 flow [2024-10-24 23:36:25,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-10-24 23:36:25,784 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2024-10-24 23:36:25,784 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 489 flow [2024-10-24 23:36:25,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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) [2024-10-24 23:36:25,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:25,784 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:25,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:36:25,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 23:36:25,985 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:25,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash 721039966, now seen corresponding path program 1 times [2024-10-24 23:36:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675050866] [2024-10-24 23:36:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-24 23:36:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675050866] [2024-10-24 23:36:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675050866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:36:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208492427] [2024-10-24 23:36:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:26,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:36:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:36:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:36:26,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-10-24 23:36:26,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-10-24 23:36:26,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:26,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-10-24 23:36:26,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:28,919 INFO L124 PetriNetUnfolderBase]: 17454/33299 cut-off events. [2024-10-24 23:36:28,920 INFO L125 PetriNetUnfolderBase]: For 3110/3110 co-relation queries the response was YES. [2024-10-24 23:36:29,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62125 conditions, 33299 events. 17454/33299 cut-off events. For 3110/3110 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 308835 event pairs, 2174 based on Foata normal form. 361/31054 useless extension candidates. Maximal degree in co-relation 61985. Up to 23390 conditions per place. [2024-10-24 23:36:29,161 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 156 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2024-10-24 23:36:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 217 transitions, 955 flow [2024-10-24 23:36:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:36:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:36:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2024-10-24 23:36:29,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.589171974522293 [2024-10-24 23:36:29,162 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 489 flow. Second operand 4 states and 370 transitions. [2024-10-24 23:36:29,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 217 transitions, 955 flow [2024-10-24 23:36:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 217 transitions, 943 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:36:29,170 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 493 flow [2024-10-24 23:36:29,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-10-24 23:36:29,171 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2024-10-24 23:36:29,171 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 493 flow [2024-10-24 23:36:29,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-10-24 23:36:29,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:29,171 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:29,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 23:36:29,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:29,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1965976066, now seen corresponding path program 1 times [2024-10-24 23:36:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090026134] [2024-10-24 23:36:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-24 23:36:29,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:29,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090026134] [2024-10-24 23:36:29,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090026134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:29,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:29,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:36:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310558095] [2024-10-24 23:36:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:29,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:36:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:36:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:36:29,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-10-24 23:36:29,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-10-24 23:36:29,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:29,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-10-24 23:36:29,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:36:33,181 INFO L124 PetriNetUnfolderBase]: 23304/48272 cut-off events. [2024-10-24 23:36:33,182 INFO L125 PetriNetUnfolderBase]: For 4212/4231 co-relation queries the response was YES. [2024-10-24 23:36:33,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86801 conditions, 48272 events. 23304/48272 cut-off events. For 4212/4231 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 502263 event pairs, 7598 based on Foata normal form. 563/44358 useless extension candidates. Maximal degree in co-relation 86661. Up to 23197 conditions per place. [2024-10-24 23:36:33,508 INFO L140 encePairwiseOnDemand]: 147/157 looper letters, 248 selfloop transitions, 13 changer transitions 0/316 dead transitions. [2024-10-24 23:36:33,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 316 transitions, 1435 flow [2024-10-24 23:36:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:36:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:36:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2024-10-24 23:36:33,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6263269639065817 [2024-10-24 23:36:33,514 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 493 flow. Second operand 6 states and 590 transitions. [2024-10-24 23:36:33,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 316 transitions, 1435 flow [2024-10-24 23:36:33,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 316 transitions, 1417 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:36:33,521 INFO L231 Difference]: Finished difference. Result has 171 places, 159 transitions, 591 flow [2024-10-24 23:36:33,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=591, PETRI_PLACES=171, PETRI_TRANSITIONS=159} [2024-10-24 23:36:33,521 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 45 predicate places. [2024-10-24 23:36:33,522 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 159 transitions, 591 flow [2024-10-24 23:36:33,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-10-24 23:36:33,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:33,522 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:36:33,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 23:36:33,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-24 23:36:33,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1429697644, now seen corresponding path program 1 times [2024-10-24 23:36:33,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:33,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980648435] [2024-10-24 23:36:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:36:33,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:36:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:36:33,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:36:33,564 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:36:33,564 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-24 23:36:33,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-10-24 23:36:33,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-10-24 23:36:33,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-10-24 23:36:33,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-10-24 23:36:33,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-10-24 23:36:33,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-10-24 23:36:33,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-10-24 23:36:33,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-10-24 23:36:33,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-10-24 23:36:33,567 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-10-24 23:36:33,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 23:36:33,567 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:36:33,568 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:36:33,568 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 23:36:33,603 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:36:33,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 203 transitions, 433 flow [2024-10-24 23:36:33,642 INFO L124 PetriNetUnfolderBase]: 86/401 cut-off events. [2024-10-24 23:36:33,642 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 23:36:33,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 401 events. 86/401 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1945 event pairs, 1 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 279. Up to 16 conditions per place. [2024-10-24 23:36:33,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 203 transitions, 433 flow [2024-10-24 23:36:33,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 203 transitions, 433 flow [2024-10-24 23:36:33,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:36:33,661 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;@6634b7e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:36:33,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-24 23:36:33,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:36:33,662 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:36:33,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:36:33,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:36:33,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:36:33,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-24 23:36:33,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:36:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 997912, now seen corresponding path program 1 times [2024-10-24 23:36:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:36:33,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762772152] [2024-10-24 23:36:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:36:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:36:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:36:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:36:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:36:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762772152] [2024-10-24 23:36:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762772152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:36:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:36:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:36:33,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484950141] [2024-10-24 23:36:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:36:33,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:36:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:36:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:36:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:36:33,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 203 [2024-10-24 23:36:33,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 203 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2024-10-24 23:36:33,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:36:33,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 203 [2024-10-24 23:36:33,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand