./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:37:38,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:37:38,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:37:38,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:37:38,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:37:38,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:37:38,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:37:38,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:37:38,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:37:38,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:37:38,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:37:38,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:37:38,488 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:37:38,489 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:37:38,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:37:38,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:38,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:37:38,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:37:38,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:37:38,492 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2025-03-17 19:37:38,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:37:38,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:37:38,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:37:38,740 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:37:38,741 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:37:38,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2025-03-17 19:37:39,872 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad5d906f/022582feb9b04e908551cfb36b22ac3a/FLAGc08dbe4c5 [2025-03-17 19:37:40,103 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:37:40,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2025-03-17 19:37:40,113 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad5d906f/022582feb9b04e908551cfb36b22ac3a/FLAGc08dbe4c5 [2025-03-17 19:37:40,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad5d906f/022582feb9b04e908551cfb36b22ac3a [2025-03-17 19:37:40,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:37:40,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:37:40,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:40,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:37:40,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:37:40,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a3d387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40, skipping insertion in model container [2025-03-17 19:37:40,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:37:40,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:40,713 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:37:40,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:40,773 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:37:40,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40 WrapperNode [2025-03-17 19:37:40,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:40,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:40,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:37:40,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:37:40,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,802 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2025-03-17 19:37:40,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:40,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:37:40,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:37:40,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:37:40,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,820 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-03-17 19:37:40,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,826 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:37:40,830 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:37:40,831 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:37:40,831 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:37:40,831 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (1/1) ... [2025-03-17 19:37:40,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:40,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:37:40,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:37:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:37:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:37:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:37:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:37:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:37:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:37:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:37:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:37:40,877 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:37:40,963 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:37:40,967 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:37:41,086 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:37:41,087 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:37:41,128 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:37:41,128 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:37:41,224 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:37:41,224 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:37:41,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:41 BoogieIcfgContainer [2025-03-17 19:37:41,225 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:37:41,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:37:41,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:37:41,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:37:41,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:37:40" (1/3) ... [2025-03-17 19:37:41,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695c39ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:41, skipping insertion in model container [2025-03-17 19:37:41,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:40" (2/3) ... [2025-03-17 19:37:41,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695c39ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:41, skipping insertion in model container [2025-03-17 19:37:41,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:41" (3/3) ... [2025-03-17 19:37:41,232 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2025-03-17 19:37:41,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:37:41,244 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_05-lockfuns_racefree.i that has 2 procedures, 52 locations, 1 initial locations, 5 loop locations, and 8 error locations. [2025-03-17 19:37:41,244 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:37:41,280 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:37:41,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 61 transitions, 129 flow [2025-03-17 19:37:41,346 INFO L124 PetriNetUnfolderBase]: 11/77 cut-off events. [2025-03-17 19:37:41,347 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:41,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 11/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 243 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2025-03-17 19:37:41,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 61 transitions, 129 flow [2025-03-17 19:37:41,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 60 transitions, 127 flow [2025-03-17 19:37:41,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:41,370 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;@4732a456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:41,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 19:37:41,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:41,374 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 19:37:41,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:41,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:41,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:41,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:37:41,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 299428638, now seen corresponding path program 1 times [2025-03-17 19:37:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139886779] [2025-03-17 19:37:41,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:41,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:41,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:41,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:41,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:41,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139886779] [2025-03-17 19:37:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139886779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:41,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:41,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788962362] [2025-03-17 19:37:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:41,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:41,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:41,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:41,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2025-03-17 19:37:41,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2025-03-17 19:37:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:41,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2025-03-17 19:37:41,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:41,864 INFO L124 PetriNetUnfolderBase]: 169/454 cut-off events. [2025-03-17 19:37:41,865 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:41,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 454 events. 169/454 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2171 event pairs, 0 based on Foata normal form. 70/491 useless extension candidates. Maximal degree in co-relation 796. Up to 326 conditions per place. [2025-03-17 19:37:41,871 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-03-17 19:37:41,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 273 flow [2025-03-17 19:37:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-03-17 19:37:41,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6680327868852459 [2025-03-17 19:37:41,887 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 127 flow. Second operand 4 states and 163 transitions. [2025-03-17 19:37:41,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 273 flow [2025-03-17 19:37:41,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:41,894 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 117 flow [2025-03-17 19:37:41,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2025-03-17 19:37:41,898 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2025-03-17 19:37:41,898 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 117 flow [2025-03-17 19:37:41,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2025-03-17 19:37:41,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:41,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:41,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:37:41,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:37:41,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash -368263302, now seen corresponding path program 1 times [2025-03-17 19:37:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053987264] [2025-03-17 19:37:41,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:41,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:41,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:41,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:41,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:41,926 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:41,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:41,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:41,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:41,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:41,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:41,950 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:41,951 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 19:37:41,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-17 19:37:41,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-17 19:37:41,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-17 19:37:41,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-17 19:37:41,954 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-17 19:37:41,954 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-17 19:37:41,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:37:41,954 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 19:37:41,956 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:41,956 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:37:41,975 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:37:41,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 94 transitions, 204 flow [2025-03-17 19:37:41,993 INFO L124 PetriNetUnfolderBase]: 21/145 cut-off events. [2025-03-17 19:37:41,994 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:37:41,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 145 events. 21/145 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 538 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2025-03-17 19:37:41,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 94 transitions, 204 flow [2025-03-17 19:37:41,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 94 transitions, 204 flow [2025-03-17 19:37:41,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:41,999 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;@4732a456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:41,999 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-17 19:37:42,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:42,000 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:37:42,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:42,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:42,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:42,001 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:37:42,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 389163099, now seen corresponding path program 1 times [2025-03-17 19:37:42,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512639834] [2025-03-17 19:37:42,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:42,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:42,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:42,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:42,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512639834] [2025-03-17 19:37:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512639834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:42,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:42,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985868830] [2025-03-17 19:37:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:42,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:42,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:42,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:42,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2025-03-17 19:37:42,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2025-03-17 19:37:42,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:42,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2025-03-17 19:37:42,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:42,992 INFO L124 PetriNetUnfolderBase]: 5891/12227 cut-off events. [2025-03-17 19:37:42,992 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2025-03-17 19:37:43,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21604 conditions, 12227 events. 5891/12227 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 101056 event pairs, 2782 based on Foata normal form. 1610/12724 useless extension candidates. Maximal degree in co-relation 1493. Up to 9257 conditions per place. [2025-03-17 19:37:43,063 INFO L140 encePairwiseOnDemand]: 74/94 looper letters, 73 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2025-03-17 19:37:43,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 109 transitions, 386 flow [2025-03-17 19:37:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2025-03-17 19:37:43,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6303191489361702 [2025-03-17 19:37:43,065 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 204 flow. Second operand 4 states and 237 transitions. [2025-03-17 19:37:43,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 109 transitions, 386 flow [2025-03-17 19:37:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 109 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:43,069 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 200 flow [2025-03-17 19:37:43,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2025-03-17 19:37:43,070 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2025-03-17 19:37:43,070 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 200 flow [2025-03-17 19:37:43,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2025-03-17 19:37:43,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:43,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:43,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:37:43,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:37:43,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1945444006, now seen corresponding path program 1 times [2025-03-17 19:37:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484610097] [2025-03-17 19:37:43,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:43,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:37:43,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:37:43,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:43,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484610097] [2025-03-17 19:37:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484610097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993366702] [2025-03-17 19:37:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:43,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:43,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:43,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:43,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 94 [2025-03-17 19:37:43,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2025-03-17 19:37:43,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:43,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 94 [2025-03-17 19:37:43,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:44,256 INFO L124 PetriNetUnfolderBase]: 7335/15593 cut-off events. [2025-03-17 19:37:44,256 INFO L125 PetriNetUnfolderBase]: For 578/996 co-relation queries the response was YES. [2025-03-17 19:37:44,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27931 conditions, 15593 events. 7335/15593 cut-off events. For 578/996 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 137808 event pairs, 2168 based on Foata normal form. 260/14656 useless extension candidates. Maximal degree in co-relation 27819. Up to 7118 conditions per place. [2025-03-17 19:37:44,342 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 132 selfloop transitions, 12 changer transitions 0/179 dead transitions. [2025-03-17 19:37:44,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 179 transitions, 722 flow [2025-03-17 19:37:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2025-03-17 19:37:44,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2025-03-17 19:37:44,348 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 200 flow. Second operand 5 states and 315 transitions. [2025-03-17 19:37:44,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 179 transitions, 722 flow [2025-03-17 19:37:44,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 179 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:37:44,352 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 292 flow [2025-03-17 19:37:44,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2025-03-17 19:37:44,353 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2025-03-17 19:37:44,353 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 292 flow [2025-03-17 19:37:44,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2025-03-17 19:37:44,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:44,353 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:44,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:37:44,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:37:44,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1993297561, now seen corresponding path program 1 times [2025-03-17 19:37:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:44,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809853085] [2025-03-17 19:37:44,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:44,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:37:44,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:37:44,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:44,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:44,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809853085] [2025-03-17 19:37:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809853085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404380153] [2025-03-17 19:37:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:44,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:44,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:44,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:37:44,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2025-03-17 19:37:44,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2025-03-17 19:37:44,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:44,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2025-03-17 19:37:44,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:45,642 INFO L124 PetriNetUnfolderBase]: 7634/15248 cut-off events. [2025-03-17 19:37:45,643 INFO L125 PetriNetUnfolderBase]: For 4624/4624 co-relation queries the response was YES. [2025-03-17 19:37:45,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31812 conditions, 15248 events. 7634/15248 cut-off events. For 4624/4624 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 129272 event pairs, 1366 based on Foata normal form. 204/14366 useless extension candidates. Maximal degree in co-relation 24255. Up to 9379 conditions per place. [2025-03-17 19:37:45,706 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 142 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2025-03-17 19:37:45,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 181 transitions, 846 flow [2025-03-17 19:37:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2025-03-17 19:37:45,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5780141843971631 [2025-03-17 19:37:45,708 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 292 flow. Second operand 6 states and 326 transitions. [2025-03-17 19:37:45,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 181 transitions, 846 flow [2025-03-17 19:37:45,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 181 transitions, 846 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:45,717 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 300 flow [2025-03-17 19:37:45,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2025-03-17 19:37:45,718 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2025-03-17 19:37:45,718 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 300 flow [2025-03-17 19:37:45,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2025-03-17 19:37:45,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:45,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:37:45,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:37:45,719 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:37:45,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1662681897, now seen corresponding path program 1 times [2025-03-17 19:37:45,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171076857] [2025-03-17 19:37:45,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:45,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:37:45,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:37:45,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:45,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:45,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171076857] [2025-03-17 19:37:45,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171076857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:45,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:45,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:45,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7611627] [2025-03-17 19:37:45,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:45,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:45,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:45,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:45,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:45,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2025-03-17 19:37:45,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2025-03-17 19:37:45,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:45,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2025-03-17 19:37:45,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:46,617 INFO L124 PetriNetUnfolderBase]: 7271/14420 cut-off events. [2025-03-17 19:37:46,617 INFO L125 PetriNetUnfolderBase]: For 5348/5348 co-relation queries the response was YES. [2025-03-17 19:37:46,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30751 conditions, 14420 events. 7271/14420 cut-off events. For 5348/5348 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 120199 event pairs, 1551 based on Foata normal form. 212/13838 useless extension candidates. Maximal degree in co-relation 23301. Up to 10013 conditions per place. [2025-03-17 19:37:46,659 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 115 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2025-03-17 19:37:46,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 154 transitions, 728 flow [2025-03-17 19:37:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2025-03-17 19:37:46,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6143617021276596 [2025-03-17 19:37:46,661 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 300 flow. Second operand 4 states and 231 transitions. [2025-03-17 19:37:46,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 154 transitions, 728 flow [2025-03-17 19:37:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 712 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:37:46,672 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 300 flow [2025-03-17 19:37:46,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2025-03-17 19:37:46,673 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2025-03-17 19:37:46,673 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 300 flow [2025-03-17 19:37:46,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2025-03-17 19:37:46,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:46,673 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 19:37:46,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:37:46,674 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:37:46,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -109456050, now seen corresponding path program 1 times [2025-03-17 19:37:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360469929] [2025-03-17 19:37:46,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:46,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:46,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:46,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:46,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:46,686 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:46,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:46,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:46,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:46,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:46,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:46,699 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-03-17 19:37:46,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-03-17 19:37:46,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-03-17 19:37:46,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:37:46,700 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:37:46,701 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:46,701 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:37:46,718 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:37:46,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 127 transitions, 281 flow [2025-03-17 19:37:46,731 INFO L124 PetriNetUnfolderBase]: 34/232 cut-off events. [2025-03-17 19:37:46,732 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:37:46,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 232 events. 34/232 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 1 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2025-03-17 19:37:46,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 127 transitions, 281 flow [2025-03-17 19:37:46,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 127 transitions, 281 flow [2025-03-17 19:37:46,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:46,735 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;@4732a456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:46,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 19:37:46,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:46,736 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:37:46,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:46,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:46,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:46,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:37:46,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash 510389625, now seen corresponding path program 1 times [2025-03-17 19:37:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591385746] [2025-03-17 19:37:46,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:46,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:46,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:46,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:46,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:37:46,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:46,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591385746] [2025-03-17 19:37:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591385746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:46,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:46,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:46,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793419041] [2025-03-17 19:37:46,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:46,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:46,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:46,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:46,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 127 [2025-03-17 19:37:46,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 127 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2025-03-17 19:37:46,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:46,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 127 [2025-03-17 19:37:46,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:58,662 INFO L124 PetriNetUnfolderBase]: 129214/229378 cut-off events. [2025-03-17 19:37:58,662 INFO L125 PetriNetUnfolderBase]: For 2295/2295 co-relation queries the response was YES. [2025-03-17 19:37:59,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409232 conditions, 229378 events. 129214/229378 cut-off events. For 2295/2295 co-relation queries the response was YES. Maximal size of possible extension queue 4633. Compared 2411572 event pairs, 84202 based on Foata normal form. 32680/243046 useless extension candidates. Maximal degree in co-relation 22393. Up to 178304 conditions per place. [2025-03-17 19:37:59,991 INFO L140 encePairwiseOnDemand]: 101/127 looper letters, 88 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2025-03-17 19:37:59,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 136 transitions, 481 flow [2025-03-17 19:37:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2025-03-17 19:37:59,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6023622047244095 [2025-03-17 19:37:59,992 INFO L175 Difference]: Start difference. First operand has 111 places, 127 transitions, 281 flow. Second operand 4 states and 306 transitions. [2025-03-17 19:37:59,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 136 transitions, 481 flow [2025-03-17 19:37:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 136 transitions, 481 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:59,997 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 265 flow [2025-03-17 19:37:59,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2025-03-17 19:37:59,997 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 5 predicate places. [2025-03-17 19:37:59,997 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 265 flow [2025-03-17 19:37:59,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2025-03-17 19:37:59,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:59,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:59,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:37:59,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:37:59,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1777346952, now seen corresponding path program 1 times [2025-03-17 19:37:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:59,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233923469] [2025-03-17 19:37:59,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:59,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:00,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:38:00,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:38:00,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:00,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233923469] [2025-03-17 19:38:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233923469] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:00,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153186240] [2025-03-17 19:38:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:00,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:00,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:00,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:00,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 127 [2025-03-17 19:38:00,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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) [2025-03-17 19:38:00,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:00,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 127 [2025-03-17 19:38:00,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:15,990 INFO L124 PetriNetUnfolderBase]: 176829/306351 cut-off events. [2025-03-17 19:38:15,990 INFO L125 PetriNetUnfolderBase]: For 10168/16876 co-relation queries the response was YES. [2025-03-17 19:38:16,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561287 conditions, 306351 events. 176829/306351 cut-off events. For 10168/16876 co-relation queries the response was YES. Maximal size of possible extension queue 6477. Compared 3267857 event pairs, 59416 based on Foata normal form. 3925/288400 useless extension candidates. Maximal degree in co-relation 561174. Up to 159474 conditions per place. [2025-03-17 19:38:17,815 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 194 selfloop transitions, 16 changer transitions 0/257 dead transitions. [2025-03-17 19:38:17,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 257 transitions, 1051 flow [2025-03-17 19:38:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:38:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:38:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2025-03-17 19:38:17,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.694488188976378 [2025-03-17 19:38:17,816 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 265 flow. Second operand 5 states and 441 transitions. [2025-03-17 19:38:17,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 257 transitions, 1051 flow [2025-03-17 19:38:17,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 257 transitions, 1047 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:38:17,830 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 391 flow [2025-03-17 19:38:17,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2025-03-17 19:38:17,830 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 12 predicate places. [2025-03-17 19:38:17,831 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 391 flow [2025-03-17 19:38:17,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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) [2025-03-17 19:38:17,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:17,833 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:17,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:38:17,833 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:38:17,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2102053849, now seen corresponding path program 1 times [2025-03-17 19:38:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146061073] [2025-03-17 19:38:17,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:17,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:38:17,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:38:17,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:17,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146061073] [2025-03-17 19:38:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146061073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:17,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:38:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099148351] [2025-03-17 19:38:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:17,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:38:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:17,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:38:17,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:38:17,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 127 [2025-03-17 19:38:17,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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) [2025-03-17 19:38:17,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:17,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 127 [2025-03-17 19:38:17,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand