./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 23:59:05,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:59:05,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:59:05,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:59:05,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:59:05,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:59:05,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:59:05,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:59:05,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:59:05,485 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:59:05,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:59:05,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:59:05,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:59:05,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:59:05,489 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:59:05,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:59:05,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:59:05,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:59:05,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:59:05,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:59:05,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:59:05,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:59:05,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:59:05,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:59:05,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:59:05,495 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:59:05,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:59:05,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:59:05,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:59:05,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:59:05,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:59:05,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:59:05,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:59:05,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:59:05,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:59:05,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:59:05,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:59:05,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:59:05,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:59:05,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:59:05,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:59:05,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:59:05,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:59:05,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:59:05,501 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-10-11 23:59:05,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:59:05,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:59:05,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:59:05,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:59:05,826 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:59:05,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-11 23:59:07,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:59:07,588 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:59:07,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-11 23:59:07,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f680fe72a/eab3e5373d674b3bb01f23410f8161b6/FLAG42a6d8c70 [2024-10-11 23:59:07,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f680fe72a/eab3e5373d674b3bb01f23410f8161b6 [2024-10-11 23:59:07,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:59:07,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:59:07,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:59:07,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:59:07,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:59:07,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:59:07" (1/1) ... [2024-10-11 23:59:07,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e20ee0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:07, skipping insertion in model container [2024-10-11 23:59:07,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:59:07" (1/1) ... [2024-10-11 23:59:07,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:59:08,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:59:08,180 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:59:08,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:59:08,284 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:59:08,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08 WrapperNode [2024-10-11 23:59:08,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:59:08,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:59:08,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:59:08,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:59:08,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,376 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 313 [2024-10-11 23:59:08,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:59:08,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:59:08,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:59:08,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:59:08,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,429 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 5, 16, 2]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 8 writes are split as follows [0, 0, 7, 1]. [2024-10-11 23:59:08,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:59:08,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:59:08,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:59:08,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:59:08,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (1/1) ... [2024-10-11 23:59:08,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:59:08,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:08,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:59:08,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:59:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:59:08,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:59:08,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:59:08,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:59:08,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:59:08,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:59:08,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:59:08,564 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:59:08,715 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:59:08,718 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:59:09,140 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:59:09,140 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:59:09,424 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:59:09,426 INFO L314 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-11 23:59:09,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:59:09 BoogieIcfgContainer [2024-10-11 23:59:09,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:59:09,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:59:09,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:59:09,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:59:09,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:59:07" (1/3) ... [2024-10-11 23:59:09,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f991b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:59:09, skipping insertion in model container [2024-10-11 23:59:09,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:59:08" (2/3) ... [2024-10-11 23:59:09,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f991b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:59:09, skipping insertion in model container [2024-10-11 23:59:09,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:59:09" (3/3) ... [2024-10-11 23:59:09,436 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-10-11 23:59:09,453 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:59:09,454 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-11 23:59:09,454 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:59:09,507 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:59:09,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 166 transitions, 339 flow [2024-10-11 23:59:09,628 INFO L124 PetriNetUnfolderBase]: 60/262 cut-off events. [2024-10-11 23:59:09,629 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:59:09,636 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. [2024-10-11 23:59:09,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 166 transitions, 339 flow [2024-10-11 23:59:09,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 165 transitions, 337 flow [2024-10-11 23:59:09,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:59:09,663 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;@4793e1df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:59:09,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 23:59:09,666 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:59:09,666 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:59:09,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:59:09,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:09,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:59:09,668 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)] === [2024-10-11 23:59:09,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash 827928, now seen corresponding path program 1 times [2024-10-11 23:59:09,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:09,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033102975] [2024-10-11 23:59:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:09,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033102975] [2024-10-11 23:59:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033102975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:09,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:09,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894597785] [2024-10-11 23:59:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:09,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:09,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:09,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:09,997 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) [2024-10-11 23:59:09,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:09,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:09,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:10,587 INFO L124 PetriNetUnfolderBase]: 971/3020 cut-off events. [2024-10-11 23:59:10,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:59:10,638 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. [2024-10-11 23:59:10,654 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 70 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-11 23:59:10,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 427 flow [2024-10-11 23:59:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-10-11 23:59:10,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451807228915663 [2024-10-11 23:59:10,670 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 337 flow. Second operand 4 states and 362 transitions. [2024-10-11 23:59:10,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 427 flow [2024-10-11 23:59:10,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:59:10,684 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 301 flow [2024-10-11 23:59:10,687 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} [2024-10-11 23:59:10,692 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 5 predicate places. [2024-10-11 23:59:10,693 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 301 flow [2024-10-11 23:59:10,694 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) [2024-10-11 23:59:10,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:10,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:59:10,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:59:10,695 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)] === [2024-10-11 23:59:10,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1104075739, now seen corresponding path program 1 times [2024-10-11 23:59:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281019426] [2024-10-11 23:59:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281019426] [2024-10-11 23:59:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281019426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50436292] [2024-10-11 23:59:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:10,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:10,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:10,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:59:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:10,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:59:10,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:11,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:59:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50436292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:11,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:59:11,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:59:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673436888] [2024-10-11 23:59:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:11,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:59:11,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:59:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:59:11,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:11,059 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) [2024-10-11 23:59:11,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:11,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:11,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:11,575 INFO L124 PetriNetUnfolderBase]: 971/3019 cut-off events. [2024-10-11 23:59:11,576 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 23:59:11,581 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. [2024-10-11 23:59:11,591 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 66 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-10-11 23:59:11,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 441 flow [2024-10-11 23:59:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:59:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:59:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2024-10-11 23:59:11,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45883534136546184 [2024-10-11 23:59:11,595 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 301 flow. Second operand 6 states and 457 transitions. [2024-10-11 23:59:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 441 flow [2024-10-11 23:59:11,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:59:11,599 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 307 flow [2024-10-11 23:59:11,600 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} [2024-10-11 23:59:11,601 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2024-10-11 23:59:11,601 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 307 flow [2024-10-11 23:59:11,601 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) [2024-10-11 23:59:11,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:11,604 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:59:11,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:59:11,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:11,805 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)] === [2024-10-11 23:59:11,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 133391391, now seen corresponding path program 1 times [2024-10-11 23:59:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986601937] [2024-10-11 23:59:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986601937] [2024-10-11 23:59:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986601937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:11,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:11,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545493860] [2024-10-11 23:59:11,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:11,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:59:11,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:59:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:59:11,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:11,879 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) [2024-10-11 23:59:11,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:11,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:11,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:12,213 INFO L124 PetriNetUnfolderBase]: 971/3018 cut-off events. [2024-10-11 23:59:12,214 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 23:59:12,219 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. [2024-10-11 23:59:12,230 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 67 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-11 23:59:12,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 445 flow [2024-10-11 23:59:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:59:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:59:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-10-11 23:59:12,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261044176706827 [2024-10-11 23:59:12,232 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 307 flow. Second operand 3 states and 262 transitions. [2024-10-11 23:59:12,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 445 flow [2024-10-11 23:59:12,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 423 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:59:12,237 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2024-10-11 23:59:12,237 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} [2024-10-11 23:59:12,238 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2024-10-11 23:59:12,238 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2024-10-11 23:59:12,238 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) [2024-10-11 23:59:12,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:12,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:12,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:59:12,239 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)] === [2024-10-11 23:59:12,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -662651564, now seen corresponding path program 1 times [2024-10-11 23:59:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203307481] [2024-10-11 23:59:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:12,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:12,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:12,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203307481] [2024-10-11 23:59:12,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203307481] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165766017] [2024-10-11 23:59:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:12,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:12,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:12,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:59:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:12,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:59:12,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:12,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165766017] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:12,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:59:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135193351] [2024-10-11 23:59:12,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:12,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:59:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:59:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:59:12,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:12,495 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) [2024-10-11 23:59:12,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:12,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:12,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:12,965 INFO L124 PetriNetUnfolderBase]: 971/3022 cut-off events. [2024-10-11 23:59:12,966 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 23:59:12,971 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. [2024-10-11 23:59:12,983 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-10-11 23:59:12,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 452 flow [2024-10-11 23:59:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:59:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:59:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2024-10-11 23:59:12,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2024-10-11 23:59:12,986 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 7 states and 524 transitions. [2024-10-11 23:59:12,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 452 flow [2024-10-11 23:59:12,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:12,990 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 315 flow [2024-10-11 23:59:12,990 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} [2024-10-11 23:59:12,991 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-10-11 23:59:12,991 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 315 flow [2024-10-11 23:59:12,992 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) [2024-10-11 23:59:12,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:12,992 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:13,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:59:13,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:13,194 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)] === [2024-10-11 23:59:13,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1560986060, now seen corresponding path program 2 times [2024-10-11 23:59:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056380098] [2024-10-11 23:59:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:59:13,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:13,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056380098] [2024-10-11 23:59:13,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056380098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:13,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:13,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:59:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111077172] [2024-10-11 23:59:13,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:13,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:13,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 166 [2024-10-11 23:59:13,265 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) [2024-10-11 23:59:13,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:13,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 166 [2024-10-11 23:59:13,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:13,644 INFO L124 PetriNetUnfolderBase]: 949/2623 cut-off events. [2024-10-11 23:59:13,644 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 23:59:13,649 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. [2024-10-11 23:59:13,662 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 115 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2024-10-11 23:59:13,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 179 transitions, 633 flow [2024-10-11 23:59:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2024-10-11 23:59:13,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-10-11 23:59:13,665 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 315 flow. Second operand 4 states and 368 transitions. [2024-10-11 23:59:13,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 179 transitions, 633 flow [2024-10-11 23:59:13,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:13,669 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 317 flow [2024-10-11 23:59:13,670 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} [2024-10-11 23:59:13,670 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-10-11 23:59:13,671 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 317 flow [2024-10-11 23:59:13,671 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) [2024-10-11 23:59:13,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:13,671 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:13,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:59:13,672 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)] === [2024-10-11 23:59:13,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1723904684, now seen corresponding path program 1 times [2024-10-11 23:59:13,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647230326] [2024-10-11 23:59:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:13,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:13,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647230326] [2024-10-11 23:59:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647230326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:13,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306839342] [2024-10-11 23:59:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:13,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:13,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:13,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:59:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:13,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:59:13,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:13,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306839342] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:14,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:14,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 23:59:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661854798] [2024-10-11 23:59:14,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:14,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:59:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:59:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:59:14,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:14,097 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) [2024-10-11 23:59:14,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:14,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:14,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:14,798 INFO L124 PetriNetUnfolderBase]: 968/2905 cut-off events. [2024-10-11 23:59:14,798 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-11 23:59:14,804 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. [2024-10-11 23:59:14,819 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-10-11 23:59:14,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 529 flow [2024-10-11 23:59:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:59:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:59:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1046 transitions. [2024-10-11 23:59:14,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42008032128514056 [2024-10-11 23:59:14,823 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 317 flow. Second operand 15 states and 1046 transitions. [2024-10-11 23:59:14,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 529 flow [2024-10-11 23:59:14,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:59:14,827 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 408 flow [2024-10-11 23:59:14,827 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} [2024-10-11 23:59:14,828 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2024-10-11 23:59:14,828 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 408 flow [2024-10-11 23:59:14,829 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) [2024-10-11 23:59:14,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:14,829 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:14,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:59:15,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:15,031 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)] === [2024-10-11 23:59:15,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1749324908, now seen corresponding path program 2 times [2024-10-11 23:59:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780465311] [2024-10-11 23:59:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780465311] [2024-10-11 23:59:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780465311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902904874] [2024-10-11 23:59:15,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:59:15,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:15,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:15,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:59:15,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:59:15,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:59:15,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:59:15,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:15,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902904874] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:15,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:15,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-11 23:59:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882573819] [2024-10-11 23:59:15,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:15,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 23:59:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 23:59:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 23:59:15,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-11 23:59:15,755 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) [2024-10-11 23:59:15,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:15,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-11 23:59:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:16,305 INFO L124 PetriNetUnfolderBase]: 968/2938 cut-off events. [2024-10-11 23:59:16,306 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-11 23:59:16,313 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. [2024-10-11 23:59:16,324 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-10-11 23:59:16,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 150 transitions, 638 flow [2024-10-11 23:59:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 23:59:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 23:59:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1435 transitions. [2024-10-11 23:59:16,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41164658634538154 [2024-10-11 23:59:16,331 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 408 flow. Second operand 21 states and 1435 transitions. [2024-10-11 23:59:16,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 150 transitions, 638 flow [2024-10-11 23:59:16,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 628 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:59:16,337 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 509 flow [2024-10-11 23:59:16,338 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} [2024-10-11 23:59:16,338 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2024-10-11 23:59:16,339 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 509 flow [2024-10-11 23:59:16,341 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) [2024-10-11 23:59:16,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:16,341 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:16,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:59:16,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 23:59:16,542 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)] === [2024-10-11 23:59:16,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 44755527, now seen corresponding path program 3 times [2024-10-11 23:59:16,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356123035] [2024-10-11 23:59:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:59:16,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:59:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:59:16,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:59:16,632 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:59:16,634 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-11 23:59:16,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-10-11 23:59:16,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-10-11 23:59:16,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-10-11 23:59:16,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-10-11 23:59:16,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-10-11 23:59:16,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-10-11 23:59:16,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-10-11 23:59:16,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-10-11 23:59:16,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-10-11 23:59:16,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-10-11 23:59:16,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-10-11 23:59:16,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-10-11 23:59:16,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-10-11 23:59:16,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:59:16,641 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-10-11 23:59:16,644 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:59:16,644 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:59:16,696 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:59:16,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 218 transitions, 452 flow [2024-10-11 23:59:16,739 INFO L124 PetriNetUnfolderBase]: 97/429 cut-off events. [2024-10-11 23:59:16,740 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:59:16,744 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. [2024-10-11 23:59:16,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 218 transitions, 452 flow [2024-10-11 23:59:16,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 218 transitions, 452 flow [2024-10-11 23:59:16,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:59:16,754 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;@4793e1df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:59:16,755 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-11 23:59:16,756 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:59:16,756 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:59:16,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:59:16,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:16,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:59:16,756 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)] === [2024-10-11 23:59:16,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1044402, now seen corresponding path program 1 times [2024-10-11 23:59:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:16,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902516899] [2024-10-11 23:59:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:16,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:16,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902516899] [2024-10-11 23:59:16,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902516899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:16,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:16,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:16,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565335773] [2024-10-11 23:59:16,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:16,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:16,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:16,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:16,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-11 23:59:16,789 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) [2024-10-11 23:59:16,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:16,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-11 23:59:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:23,333 INFO L124 PetriNetUnfolderBase]: 40815/88548 cut-off events. [2024-10-11 23:59:23,333 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-10-11 23:59:23,492 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. [2024-10-11 23:59:23,901 INFO L140 encePairwiseOnDemand]: 172/218 looper letters, 94 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2024-10-11 23:59:23,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 570 flow [2024-10-11 23:59:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-10-11 23:59:23,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-10-11 23:59:23,905 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 452 flow. Second operand 4 states and 472 transitions. [2024-10-11 23:59:23,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 570 flow [2024-10-11 23:59:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:59:23,910 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 396 flow [2024-10-11 23:59:23,911 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} [2024-10-11 23:59:23,911 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2024-10-11 23:59:23,912 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 396 flow [2024-10-11 23:59:23,912 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) [2024-10-11 23:59:23,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:23,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:59:23,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:59:23,913 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)] === [2024-10-11 23:59:23,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1050150373, now seen corresponding path program 1 times [2024-10-11 23:59:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641338608] [2024-10-11 23:59:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641338608] [2024-10-11 23:59:23,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641338608] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109190253] [2024-10-11 23:59:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:23,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:23,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:23,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:23,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:59:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:24,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:59:24,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:24,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:59:24,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109190253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:24,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:59:24,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:59:24,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142519330] [2024-10-11 23:59:24,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:24,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:59:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:59:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:59:24,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-11 23:59:24,088 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) [2024-10-11 23:59:24,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:24,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-11 23:59:24,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:30,227 INFO L124 PetriNetUnfolderBase]: 40815/88547 cut-off events. [2024-10-11 23:59:30,228 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-11 23:59:30,450 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. [2024-10-11 23:59:30,837 INFO L140 encePairwiseOnDemand]: 213/218 looper letters, 90 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-10-11 23:59:30,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 584 flow [2024-10-11 23:59:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:59:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:59:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2024-10-11 23:59:30,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45489296636085624 [2024-10-11 23:59:30,843 INFO L175 Difference]: Start difference. First operand has 178 places, 180 transitions, 396 flow. Second operand 6 states and 595 transitions. [2024-10-11 23:59:30,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 584 flow [2024-10-11 23:59:30,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:59:30,847 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 402 flow [2024-10-11 23:59:30,847 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} [2024-10-11 23:59:30,848 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2024-10-11 23:59:30,848 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 402 flow [2024-10-11 23:59:30,848 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) [2024-10-11 23:59:30,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:30,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:59:30,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:59:31,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 23:59:31,049 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)] === [2024-10-11 23:59:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1805075655, now seen corresponding path program 1 times [2024-10-11 23:59:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:31,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768224353] [2024-10-11 23:59:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:31,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768224353] [2024-10-11 23:59:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768224353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:31,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784793838] [2024-10-11 23:59:31,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:31,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:59:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:59:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:59:31,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-11 23:59:31,082 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) [2024-10-11 23:59:31,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:31,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-11 23:59:31,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:37,210 INFO L124 PetriNetUnfolderBase]: 40815/88546 cut-off events. [2024-10-11 23:59:37,210 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-10-11 23:59:37,410 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. [2024-10-11 23:59:37,683 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 91 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-10-11 23:59:37,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 588 flow [2024-10-11 23:59:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:59:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:59:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-10-11 23:59:37,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244648318042814 [2024-10-11 23:59:37,685 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 402 flow. Second operand 3 states and 343 transitions. [2024-10-11 23:59:37,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 588 flow [2024-10-11 23:59:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 566 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:59:37,689 INFO L231 Difference]: Finished difference. Result has 176 places, 178 transitions, 384 flow [2024-10-11 23:59:37,690 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} [2024-10-11 23:59:37,690 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 3 predicate places. [2024-10-11 23:59:37,691 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 178 transitions, 384 flow [2024-10-11 23:59:37,691 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) [2024-10-11 23:59:37,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:37,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:37,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:59:37,692 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)] === [2024-10-11 23:59:37,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash 486378720, now seen corresponding path program 1 times [2024-10-11 23:59:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057170383] [2024-10-11 23:59:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057170383] [2024-10-11 23:59:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057170383] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442726871] [2024-10-11 23:59:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:37,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:37,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:59:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:37,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:59:37,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:37,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442726871] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:37,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:37,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:59:37,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32960846] [2024-10-11 23:59:37,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:37,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:59:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:37,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:59:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:59:37,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-11 23:59:37,891 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) [2024-10-11 23:59:37,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:37,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-11 23:59:37,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:43,791 INFO L124 PetriNetUnfolderBase]: 40815/88550 cut-off events. [2024-10-11 23:59:43,792 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-11 23:59:43,998 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. [2024-10-11 23:59:44,305 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 91 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2024-10-11 23:59:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 595 flow [2024-10-11 23:59:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:59:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:59:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 681 transitions. [2024-10-11 23:59:44,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44626474442988207 [2024-10-11 23:59:44,308 INFO L175 Difference]: Start difference. First operand has 176 places, 178 transitions, 384 flow. Second operand 7 states and 681 transitions. [2024-10-11 23:59:44,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 595 flow [2024-10-11 23:59:44,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 181 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:44,313 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 410 flow [2024-10-11 23:59:44,314 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} [2024-10-11 23:59:44,314 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2024-10-11 23:59:44,314 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 410 flow [2024-10-11 23:59:44,315 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) [2024-10-11 23:59:44,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:44,315 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:44,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:59:44,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 23:59:44,516 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)] === [2024-10-11 23:59:44,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1028465664, now seen corresponding path program 2 times [2024-10-11 23:59:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918809890] [2024-10-11 23:59:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:59:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918809890] [2024-10-11 23:59:44,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918809890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:44,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:44,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:59:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582183538] [2024-10-11 23:59:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:44,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:44,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:44,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-10-11 23:59:44,632 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) [2024-10-11 23:59:44,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:44,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-10-11 23:59:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:50,898 INFO L124 PetriNetUnfolderBase]: 43605/94478 cut-off events. [2024-10-11 23:59:50,898 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-11 23:59:51,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158178 conditions, 94478 events. 43605/94478 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2583. Compared 1100385 event pairs, 24476 based on Foata normal form. 21/81962 useless extension candidates. Maximal degree in co-relation 158138. Up to 63503 conditions per place. [2024-10-11 23:59:51,441 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 143 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-10-11 23:59:51,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 226 transitions, 792 flow [2024-10-11 23:59:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-10-11 23:59:51,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-10-11 23:59:51,443 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 410 flow. Second operand 4 states and 472 transitions. [2024-10-11 23:59:51,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 226 transitions, 792 flow [2024-10-11 23:59:51,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 226 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:51,447 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 430 flow [2024-10-11 23:59:51,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2024-10-11 23:59:51,448 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 12 predicate places. [2024-10-11 23:59:51,448 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 430 flow [2024-10-11 23:59:51,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-10-11 23:59:51,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:51,448 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:51,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:59:51,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:51,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1191919968, now seen corresponding path program 1 times [2024-10-11 23:59:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000481680] [2024-10-11 23:59:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:51,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000481680] [2024-10-11 23:59:51,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000481680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092872445] [2024-10-11 23:59:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:51,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:51,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:51,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:59:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:52,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:59:52,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:52,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092872445] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:52,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 23:59:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939680831] [2024-10-11 23:59:52,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:52,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:59:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:59:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:59:52,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-11 23:59:52,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 430 flow. Second operand has 18 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:52,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:52,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-11 23:59:52,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand