./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:00:24,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:00:24,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:00:24,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:00:24,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:00:24,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:00:24,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:00:24,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:00:24,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:00:24,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:00:24,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:00:24,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:00:24,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:00:24,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:00:24,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:00:24,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:00:24,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:00:24,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:00:24,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:00:24,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:00:24,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:00:24,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:00:24,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:00:24,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:00:24,263 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:00:24,263 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:00:24,264 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:00:24,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:00:24,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:00:24,264 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:00:24,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:00:24,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:00:24,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:00:24,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:00:24,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:00:24,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:00:24,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:00:24,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:00:24,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:00:24,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:00:24,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:00:24,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:00:24,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:00:24,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:00:24,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-19 14:00:24,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:00:24,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:00:24,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:00:24,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:00:24,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:00:24,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-19 14:00:25,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:00:25,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:00:25,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-19 14:00:25,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1728923/6deac93b9c924bdc81b9a4292b493121/FLAG1791f8bef [2024-11-19 14:00:25,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1728923/6deac93b9c924bdc81b9a4292b493121 [2024-11-19 14:00:25,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:00:25,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:00:25,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:00:25,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:00:25,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:00:25,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:25" (1/1) ... [2024-11-19 14:00:25,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c83f227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:25, skipping insertion in model container [2024-11-19 14:00:25,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:25" (1/1) ... [2024-11-19 14:00:26,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:00:26,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:00:26,377 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:00:26,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:00:26,491 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:00:26,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26 WrapperNode [2024-11-19 14:00:26,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:00:26,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:00:26,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:00:26,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:00:26,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,539 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 372 [2024-11-19 14:00:26,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:00:26,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:00:26,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:00:26,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:00:26,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,579 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-19 14:00:26,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:00:26,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:00:26,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:00:26,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:00:26,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2024-11-19 14:00:26,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:00:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:26,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:00:26,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:00:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 14:00:26,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 14:00:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 14:00:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:00:26,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:00:26,675 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:00:26,778 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:00:26,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:00:27,189 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:00:27,189 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:00:27,507 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:00:27,508 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-19 14:00:27,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:27 BoogieIcfgContainer [2024-11-19 14:00:27,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:00:27,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:00:27,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:00:27,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:00:27,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:25" (1/3) ... [2024-11-19 14:00:27,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd49591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:27, skipping insertion in model container [2024-11-19 14:00:27,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (2/3) ... [2024-11-19 14:00:27,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd49591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:27, skipping insertion in model container [2024-11-19 14:00:27,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:27" (3/3) ... [2024-11-19 14:00:27,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-19 14:00:27,529 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:00:27,529 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-19 14:00:27,529 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:00:27,575 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 14:00:27,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 166 transitions, 339 flow [2024-11-19 14:00:27,669 INFO L124 PetriNetUnfolderBase]: 60/262 cut-off events. [2024-11-19 14:00:27,670 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:00:27,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 262 events. 60/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1294 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2024-11-19 14:00:27,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 166 transitions, 339 flow [2024-11-19 14:00:27,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 165 transitions, 337 flow [2024-11-19 14:00:27,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:27,702 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;@7c774c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:27,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-19 14:00:27,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:27,706 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:00:27,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:27,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:27,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:00:27,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:27,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash 945102, now seen corresponding path program 1 times [2024-11-19 14:00:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:27,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046177737] [2024-11-19 14:00:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046177737] [2024-11-19 14:00:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046177737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:28,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:28,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:28,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057774557] [2024-11-19 14:00:28,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:28,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:28,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:28,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:28,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:28,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:28,490 INFO L124 PetriNetUnfolderBase]: 971/3020 cut-off events. [2024-11-19 14:00:28,490 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:00:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 3020 events. 971/3020 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24618 event pairs, 820 based on Foata normal form. 535/3140 useless extension candidates. Maximal degree in co-relation 4727. Up to 1850 conditions per place. [2024-11-19 14:00:28,503 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 70 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-19 14:00:28,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 427 flow [2024-11-19 14:00:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-11-19 14:00:28,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451807228915663 [2024-11-19 14:00:28,515 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 337 flow. Second operand 4 states and 362 transitions. [2024-11-19 14:00:28,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 427 flow [2024-11-19 14:00:28,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:28,521 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 301 flow [2024-11-19 14:00:28,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2024-11-19 14:00:28,525 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 5 predicate places. [2024-11-19 14:00:28,526 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 301 flow [2024-11-19 14:00:28,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:28,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:28,526 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:00:28,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:00:28,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:28,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1908195227, now seen corresponding path program 1 times [2024-11-19 14:00:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:28,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730775981] [2024-11-19 14:00:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:28,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:28,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730775981] [2024-11-19 14:00:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730775981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781303554] [2024-11-19 14:00:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:28,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:28,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:28,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:28,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:00:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:28,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:00:28,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:28,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:00:28,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781303554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:28,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:00:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:00:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074626582] [2024-11-19 14:00:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:28,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:00:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:00:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:00:28,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:28,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:28,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:28,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:28,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:29,099 INFO L124 PetriNetUnfolderBase]: 971/3019 cut-off events. [2024-11-19 14:00:29,099 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:00:29,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 3019 events. 971/3019 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24617 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4869. Up to 1845 conditions per place. [2024-11-19 14:00:29,110 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 66 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-11-19 14:00:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 441 flow [2024-11-19 14:00:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:00:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:00:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2024-11-19 14:00:29,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45883534136546184 [2024-11-19 14:00:29,114 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 301 flow. Second operand 6 states and 457 transitions. [2024-11-19 14:00:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 441 flow [2024-11-19 14:00:29,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:00:29,117 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 307 flow [2024-11-19 14:00:29,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2024-11-19 14:00:29,118 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2024-11-19 14:00:29,118 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 307 flow [2024-11-19 14:00:29,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:29,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:29,119 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:00:29,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:00:29,319 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 [2024-11-19 14:00:29,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:29,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 975491157, now seen corresponding path program 1 times [2024-11-19 14:00:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100257632] [2024-11-19 14:00:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:00:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100257632] [2024-11-19 14:00:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100257632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:29,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:29,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110028840] [2024-11-19 14:00:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:29,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:00:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:00:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:00:29,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:29,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:29,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:29,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:29,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:29,628 INFO L124 PetriNetUnfolderBase]: 971/3018 cut-off events. [2024-11-19 14:00:29,628 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 14:00:29,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 3018 events. 971/3018 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24572 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4865. Up to 1848 conditions per place. [2024-11-19 14:00:29,641 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 67 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-19 14:00:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 445 flow [2024-11-19 14:00:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:00:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:00:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-11-19 14:00:29,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261044176706827 [2024-11-19 14:00:29,642 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 307 flow. Second operand 3 states and 262 transitions. [2024-11-19 14:00:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 445 flow [2024-11-19 14:00:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 423 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 14:00:29,646 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2024-11-19 14:00:29,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2024-11-19 14:00:29,646 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2024-11-19 14:00:29,646 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2024-11-19 14:00:29,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:29,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:29,647 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:29,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:00:29,647 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:29,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1141375690, now seen corresponding path program 1 times [2024-11-19 14:00:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930904205] [2024-11-19 14:00:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930904205] [2024-11-19 14:00:29,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930904205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53149432] [2024-11-19 14:00:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:29,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:29,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:29,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:29,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:00:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:29,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:00:29,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:29,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:00:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53149432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:00:29,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:00:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:00:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116267264] [2024-11-19 14:00:29,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:00:29,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:00:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:00:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:00:29,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:29,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:29,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:29,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:29,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:30,229 INFO L124 PetriNetUnfolderBase]: 971/3022 cut-off events. [2024-11-19 14:00:30,230 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-19 14:00:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 3022 events. 971/3022 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24604 event pairs, 820 based on Foata normal form. 2/2611 useless extension candidates. Maximal degree in co-relation 4858. Up to 1846 conditions per place. [2024-11-19 14:00:30,242 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-11-19 14:00:30,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 452 flow [2024-11-19 14:00:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:00:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:00:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2024-11-19 14:00:30,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2024-11-19 14:00:30,244 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 7 states and 524 transitions. [2024-11-19 14:00:30,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 452 flow [2024-11-19 14:00:30,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:00:30,247 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 315 flow [2024-11-19 14:00:30,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-11-19 14:00:30,248 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-11-19 14:00:30,248 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 315 flow [2024-11-19 14:00:30,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:30,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:30,248 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:30,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:00:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 14:00:30,449 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:30,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1298542442, now seen corresponding path program 2 times [2024-11-19 14:00:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:30,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522879040] [2024-11-19 14:00:30,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:00:30,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:30,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:00:30,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:00:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:00:30,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:30,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522879040] [2024-11-19 14:00:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522879040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:00:30,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578015284] [2024-11-19 14:00:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:30,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:30,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:30,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 166 [2024-11-19 14:00:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 166 [2024-11-19 14:00:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:30,774 INFO L124 PetriNetUnfolderBase]: 949/2623 cut-off events. [2024-11-19 14:00:30,774 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 14:00:30,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 2623 events. 949/2623 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20300 event pairs, 0 based on Foata normal form. 21/2339 useless extension candidates. Maximal degree in co-relation 4427. Up to 1753 conditions per place. [2024-11-19 14:00:30,786 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 115 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2024-11-19 14:00:30,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 179 transitions, 633 flow [2024-11-19 14:00:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2024-11-19 14:00:30,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-11-19 14:00:30,788 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 315 flow. Second operand 4 states and 368 transitions. [2024-11-19 14:00:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 179 transitions, 633 flow [2024-11-19 14:00:30,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:00:30,791 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 317 flow [2024-11-19 14:00:30,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-11-19 14:00:30,792 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-11-19 14:00:30,792 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 317 flow [2024-11-19 14:00:30,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:30,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:30,793 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:30,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:00:30,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:30,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash 108466708, now seen corresponding path program 1 times [2024-11-19 14:00:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304892415] [2024-11-19 14:00:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304892415] [2024-11-19 14:00:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304892415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639128653] [2024-11-19 14:00:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:30,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:30,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:30,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:30,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:00:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:30,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:00:30,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:30,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:00:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:31,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639128653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:00:31,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:00:31,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 14:00:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715786451] [2024-11-19 14:00:31,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:00:31,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:00:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:00:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:00:31,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:31,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 317 flow. Second operand has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:31,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:31,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:31,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:31,552 INFO L124 PetriNetUnfolderBase]: 968/2905 cut-off events. [2024-11-19 14:00:31,552 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-19 14:00:31,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4815 conditions, 2905 events. 968/2905 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23119 event pairs, 820 based on Foata normal form. 4/2539 useless extension candidates. Maximal degree in co-relation 4740. Up to 1810 conditions per place. [2024-11-19 14:00:31,564 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-11-19 14:00:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 529 flow [2024-11-19 14:00:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:00:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:00:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1046 transitions. [2024-11-19 14:00:31,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42008032128514056 [2024-11-19 14:00:31,567 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 317 flow. Second operand 15 states and 1046 transitions. [2024-11-19 14:00:31,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 529 flow [2024-11-19 14:00:31,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:00:31,570 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 408 flow [2024-11-19 14:00:31,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=408, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2024-11-19 14:00:31,571 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2024-11-19 14:00:31,571 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 408 flow [2024-11-19 14:00:31,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:31,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:31,572 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:31,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:00:31,775 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 [2024-11-19 14:00:31,776 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:31,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1348475092, now seen corresponding path program 2 times [2024-11-19 14:00:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774516526] [2024-11-19 14:00:31,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:00:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:31,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:00:31,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:00:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774516526] [2024-11-19 14:00:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774516526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790803477] [2024-11-19 14:00:32,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:00:32,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:32,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:32,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:32,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:00:32,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:00:32,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:00:32,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 14:00:32,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:32,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:00:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:00:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790803477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:00:32,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:00:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-19 14:00:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614122657] [2024-11-19 14:00:32,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:00:32,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:00:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:00:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-19 14:00:32,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-11-19 14:00:32,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 408 flow. Second operand has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:32,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:32,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-11-19 14:00:32,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:32,720 INFO L124 PetriNetUnfolderBase]: 968/2938 cut-off events. [2024-11-19 14:00:32,721 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-19 14:00:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 2938 events. 968/2938 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23392 event pairs, 820 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 4743. Up to 1808 conditions per place. [2024-11-19 14:00:32,739 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-11-19 14:00:32,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 150 transitions, 638 flow [2024-11-19 14:00:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 14:00:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 14:00:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1435 transitions. [2024-11-19 14:00:32,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41164658634538154 [2024-11-19 14:00:32,745 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 408 flow. Second operand 21 states and 1435 transitions. [2024-11-19 14:00:32,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 150 transitions, 638 flow [2024-11-19 14:00:32,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 628 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:00:32,749 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 509 flow [2024-11-19 14:00:32,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=509, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2024-11-19 14:00:32,750 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2024-11-19 14:00:32,750 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 509 flow [2024-11-19 14:00:32,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:32,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:32,751 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:32,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:00:32,951 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 [2024-11-19 14:00:32,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:32,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -505648515, now seen corresponding path program 3 times [2024-11-19 14:00:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918518871] [2024-11-19 14:00:32,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:00:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:33,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 14:00:33,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:00:33,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:00:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:33,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:00:33,061 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:00:33,061 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-19 14:00:33,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-19 14:00:33,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-19 14:00:33,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-19 14:00:33,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-19 14:00:33,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-19 14:00:33,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-19 14:00:33,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-19 14:00:33,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-19 14:00:33,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:00:33,067 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-19 14:00:33,069 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:00:33,069 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 14:00:33,100 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:00:33,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 218 transitions, 452 flow [2024-11-19 14:00:33,126 INFO L124 PetriNetUnfolderBase]: 97/429 cut-off events. [2024-11-19 14:00:33,126 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 14:00:33,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 429 events. 97/429 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2400 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2024-11-19 14:00:33,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 218 transitions, 452 flow [2024-11-19 14:00:33,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 218 transitions, 452 flow [2024-11-19 14:00:33,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:33,132 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;@7c774c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:33,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-19 14:00:33,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:33,142 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:00:33,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:33,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:33,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:00:33,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-19 14:00:33,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1161576, now seen corresponding path program 1 times [2024-11-19 14:00:33,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:33,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071475800] [2024-11-19 14:00:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071475800] [2024-11-19 14:00:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071475800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318897211] [2024-11-19 14:00:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:33,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:33,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:33,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-19 14:00:33,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 218 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:33,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:33,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-19 14:00:33,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:38,536 INFO L124 PetriNetUnfolderBase]: 40815/88548 cut-off events. [2024-11-19 14:00:38,537 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-19 14:00:38,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148123 conditions, 88548 events. 40815/88548 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023249 event pairs, 35780 based on Foata normal form. 17425/94055 useless extension candidates. Maximal degree in co-relation 110414. Up to 59461 conditions per place. [2024-11-19 14:00:38,993 INFO L140 encePairwiseOnDemand]: 172/218 looper letters, 94 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2024-11-19 14:00:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 570 flow [2024-11-19 14:00:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-11-19 14:00:38,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-11-19 14:00:38,996 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 452 flow. Second operand 4 states and 472 transitions. [2024-11-19 14:00:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 570 flow [2024-11-19 14:00:38,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:38,998 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 396 flow [2024-11-19 14:00:38,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=180} [2024-11-19 14:00:39,001 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2024-11-19 14:00:39,001 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 396 flow [2024-11-19 14:00:39,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:39,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:39,001 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:00:39,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:00:39,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-19 14:00:39,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash 246030885, now seen corresponding path program 1 times [2024-11-19 14:00:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:39,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281191745] [2024-11-19 14:00:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:39,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:39,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281191745] [2024-11-19 14:00:39,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281191745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139103974] [2024-11-19 14:00:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:39,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:39,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:39,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:00:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:39,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:00:39,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:39,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:00:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139103974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:39,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:00:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:00:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777795217] [2024-11-19 14:00:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:39,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:00:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:00:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:00:39,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-19 14:00:39,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 180 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:39,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:39,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-19 14:00:39,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:44,552 INFO L124 PetriNetUnfolderBase]: 40815/88547 cut-off events. [2024-11-19 14:00:44,552 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-19 14:00:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148133 conditions, 88547 events. 40815/88547 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023339 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148114. Up to 59456 conditions per place. [2024-11-19 14:00:45,188 INFO L140 encePairwiseOnDemand]: 213/218 looper letters, 90 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-11-19 14:00:45,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 584 flow [2024-11-19 14:00:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:00:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:00:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2024-11-19 14:00:45,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45489296636085624 [2024-11-19 14:00:45,191 INFO L175 Difference]: Start difference. First operand has 178 places, 180 transitions, 396 flow. Second operand 6 states and 595 transitions. [2024-11-19 14:00:45,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 584 flow [2024-11-19 14:00:45,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:00:45,195 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 402 flow [2024-11-19 14:00:45,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-11-19 14:00:45,197 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2024-11-19 14:00:45,197 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 402 flow [2024-11-19 14:00:45,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:45,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:45,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:00:45,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:00:45,398 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 [2024-11-19 14:00:45,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-19 14:00:45,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -962975889, now seen corresponding path program 1 times [2024-11-19 14:00:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399442023] [2024-11-19 14:00:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:45,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:00:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399442023] [2024-11-19 14:00:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399442023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62743973] [2024-11-19 14:00:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:45,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:00:45,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:00:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:00:45,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-19 14:00:45,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:45,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:45,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-19 14:00:45,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:50,582 INFO L124 PetriNetUnfolderBase]: 40815/88546 cut-off events. [2024-11-19 14:00:50,582 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-19 14:00:50,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148135 conditions, 88546 events. 40815/88546 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023303 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148110. Up to 59459 conditions per place. [2024-11-19 14:00:50,999 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 91 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-11-19 14:00:51,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 588 flow [2024-11-19 14:00:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:00:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:00:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-11-19 14:00:51,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244648318042814 [2024-11-19 14:00:51,001 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 402 flow. Second operand 3 states and 343 transitions. [2024-11-19 14:00:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 588 flow [2024-11-19 14:00:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 566 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 14:00:51,004 INFO L231 Difference]: Finished difference. Result has 176 places, 178 transitions, 384 flow [2024-11-19 14:00:51,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=176, PETRI_TRANSITIONS=178} [2024-11-19 14:00:51,005 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 3 predicate places. [2024-11-19 14:00:51,005 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 178 transitions, 384 flow [2024-11-19 14:00:51,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:51,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:51,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:51,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:00:51,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-19 14:00:51,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2004561322, now seen corresponding path program 1 times [2024-11-19 14:00:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:51,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690140230] [2024-11-19 14:00:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690140230] [2024-11-19 14:00:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690140230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525507527] [2024-11-19 14:00:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:51,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:51,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:51,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:00:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:51,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:00:51,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:51,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:00:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525507527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:00:51,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:00:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:00:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005698851] [2024-11-19 14:00:51,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:00:51,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:00:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:00:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:00:51,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-11-19 14:00:51,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 178 transitions, 384 flow. Second operand has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:51,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:51,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-11-19 14:00:51,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:56,191 INFO L124 PetriNetUnfolderBase]: 40815/88550 cut-off events. [2024-11-19 14:00:56,192 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-19 14:00:56,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148138 conditions, 88550 events. 40815/88550 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023205 event pairs, 35780 based on Foata normal form. 2/76636 useless extension candidates. Maximal degree in co-relation 148103. Up to 59457 conditions per place. [2024-11-19 14:00:56,798 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 91 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2024-11-19 14:00:56,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 595 flow [2024-11-19 14:00:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:00:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:00:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 681 transitions. [2024-11-19 14:00:56,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44626474442988207 [2024-11-19 14:00:56,801 INFO L175 Difference]: Start difference. First operand has 176 places, 178 transitions, 384 flow. Second operand 7 states and 681 transitions. [2024-11-19 14:00:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 595 flow [2024-11-19 14:00:56,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 181 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:00:56,804 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 410 flow [2024-11-19 14:00:56,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2024-11-19 14:00:56,805 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2024-11-19 14:00:56,805 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 410 flow [2024-11-19 14:00:56,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:56,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:56,805 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:56,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:00:57,006 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 [2024-11-19 14:00:57,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-19 14:00:57,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -406973130, now seen corresponding path program 2 times [2024-11-19 14:00:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:57,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612618824] [2024-11-19 14:00:57,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:00:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:57,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:00:57,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:00:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:00:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612618824] [2024-11-19 14:00:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612618824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:57,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:00:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985672122] [2024-11-19 14:00:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:57,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:57,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-11-19 14:00:57,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:57,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:57,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-11-19 14:00:57,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand