./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:45:50,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:45:50,558 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:45:50,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:45:50,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:45:50,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:45:50,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:45:50,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:45:50,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:45:50,592 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:45:50,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:45:50,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:45:50,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:45:50,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:45:50,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:45:50,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:45:50,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:45:50,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:50,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:45:50,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:45:50,596 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-jdk21/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 -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2025-02-06 18:45:50,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:45:50,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:45:50,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:45:50,890 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:45:50,890 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:45:50,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2025-02-06 18:45:52,196 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93c534327/ae7976277f94496b9971c0e8ac385387/FLAG13df7f913 [2025-02-06 18:45:52,495 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:45:52,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2025-02-06 18:45:52,511 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93c534327/ae7976277f94496b9971c0e8ac385387/FLAG13df7f913 [2025-02-06 18:45:52,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/93c534327/ae7976277f94496b9971c0e8ac385387 [2025-02-06 18:45:52,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:45:52,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:45:52,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:52,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:45:52,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:45:52,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:52,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8e21be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52, skipping insertion in model container [2025-02-06 18:45:52,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:52,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:45:52,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:52,901 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:45:52,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:52,987 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:45:52,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52 WrapperNode [2025-02-06 18:45:52,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:52,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:52,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:45:52,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:45:52,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,039 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 167 [2025-02-06 18:45:53,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:53,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:45:53,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:45:53,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:45:53,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,068 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]. [2025-02-06 18:45:53,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,074 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:45:53,084 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:45:53,084 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:45:53,084 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:45:53,088 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (1/1) ... [2025-02-06 18:45:53,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:53,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:45:53,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:45:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:45:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:45:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:45:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:45:53,148 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:45:53,267 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:45:53,268 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:45:53,456 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 18:45:53,457 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 18:45:53,540 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:45:53,540 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:45:53,689 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:45:53,689 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:45:53,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:53 BoogieIcfgContainer [2025-02-06 18:45:53,690 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:45:53,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:45:53,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:45:53,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:45:53,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:45:52" (1/3) ... [2025-02-06 18:45:53,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972088e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:53, skipping insertion in model container [2025-02-06 18:45:53,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:52" (2/3) ... [2025-02-06 18:45:53,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972088e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:53, skipping insertion in model container [2025-02-06 18:45:53,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:53" (3/3) ... [2025-02-06 18:45:53,701 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2025-02-06 18:45:53,714 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:45:53,715 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_60-invariant_racefree.i that has 2 procedures, 86 locations, 1 initial locations, 10 loop locations, and 12 error locations. [2025-02-06 18:45:53,716 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:45:53,764 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 18:45:53,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 104 transitions, 215 flow [2025-02-06 18:45:53,868 INFO L124 PetriNetUnfolderBase]: 26/148 cut-off events. [2025-02-06 18:45:53,870 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:53,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 26/148 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 615 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2025-02-06 18:45:53,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 104 transitions, 215 flow [2025-02-06 18:45:53,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 103 transitions, 213 flow [2025-02-06 18:45:53,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:53,902 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;@52466a8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:53,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-06 18:45:53,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:53,912 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:45:53,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:53,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:53,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:45:53,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:53,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash 425117012, now seen corresponding path program 1 times [2025-02-06 18:45:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503032139] [2025-02-06 18:45:53,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:54,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:45:54,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:45:54,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:54,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503032139] [2025-02-06 18:45:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503032139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:54,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:54,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089290521] [2025-02-06 18:45:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:54,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:54,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:54,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:54,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 104 [2025-02-06 18:45:54,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 213 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) [2025-02-06 18:45:54,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:54,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 104 [2025-02-06 18:45:54,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:54,658 INFO L124 PetriNetUnfolderBase]: 302/990 cut-off events. [2025-02-06 18:45:54,659 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:54,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 990 events. 302/990 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6260 event pairs, 0 based on Foata normal form. 312/1228 useless extension candidates. Maximal degree in co-relation 1601. Up to 591 conditions per place. [2025-02-06 18:45:54,672 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 66 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2025-02-06 18:45:54,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 377 flow [2025-02-06 18:45:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2025-02-06 18:45:54,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2025-02-06 18:45:54,692 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 213 flow. Second operand 4 states and 292 transitions. [2025-02-06 18:45:54,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 377 flow [2025-02-06 18:45:54,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:54,705 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 187 flow [2025-02-06 18:45:54,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2025-02-06 18:45:54,713 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2025-02-06 18:45:54,713 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 187 flow [2025-02-06 18:45:54,714 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) [2025-02-06 18:45:54,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:54,714 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:54,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:45:54,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:54,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1197319570, now seen corresponding path program 1 times [2025-02-06 18:45:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:54,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880636520] [2025-02-06 18:45:54,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:54,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:45:54,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:45:54,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:54,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:54,751 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:45:54,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:45:54,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:45:54,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:54,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:54,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:45:54,792 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:45:54,794 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-06 18:45:54,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-06 18:45:54,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-06 18:45:54,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-06 18:45:54,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:45:54,798 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 18:45:54,800 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:45:54,800 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:45:54,858 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:45:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 152 transitions, 320 flow [2025-02-06 18:45:54,894 INFO L124 PetriNetUnfolderBase]: 45/259 cut-off events. [2025-02-06 18:45:54,894 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 18:45:54,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 259 events. 45/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1250 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2025-02-06 18:45:54,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 152 transitions, 320 flow [2025-02-06 18:45:54,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 152 transitions, 320 flow [2025-02-06 18:45:54,904 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:54,906 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;@52466a8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:54,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 18:45:54,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:54,911 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:45:54,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:54,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:54,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:45:54,911 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:54,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 570215578, now seen corresponding path program 1 times [2025-02-06 18:45:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326105616] [2025-02-06 18:45:54,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:54,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:45:54,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:45:54,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:54,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:55,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326105616] [2025-02-06 18:45:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326105616] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:55,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:55,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494862937] [2025-02-06 18:45:55,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:55,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:55,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:55,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:55,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 152 [2025-02-06 18:45:55,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 152 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2025-02-06 18:45:55,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:55,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 152 [2025-02-06 18:45:55,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:57,768 INFO L124 PetriNetUnfolderBase]: 11954/25954 cut-off events. [2025-02-06 18:45:57,768 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-02-06 18:45:57,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44121 conditions, 25954 events. 11954/25954 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 258501 event pairs, 10371 based on Foata normal form. 8038/31815 useless extension candidates. Maximal degree in co-relation 21412. Up to 18031 conditions per place. [2025-02-06 18:45:57,977 INFO L140 encePairwiseOnDemand]: 122/152 looper letters, 88 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2025-02-06 18:45:57,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 161 transitions, 520 flow [2025-02-06 18:45:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2025-02-06 18:45:57,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.680921052631579 [2025-02-06 18:45:57,980 INFO L175 Difference]: Start difference. First operand has 129 places, 152 transitions, 320 flow. Second operand 4 states and 414 transitions. [2025-02-06 18:45:57,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 161 transitions, 520 flow [2025-02-06 18:45:57,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:57,989 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 296 flow [2025-02-06 18:45:57,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2025-02-06 18:45:57,991 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2025-02-06 18:45:57,991 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 296 flow [2025-02-06 18:45:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2025-02-06 18:45:57,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:57,992 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:57,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:45:57,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash -90880754, now seen corresponding path program 1 times [2025-02-06 18:45:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569132560] [2025-02-06 18:45:57,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:58,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:45:58,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:45:58,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:58,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569132560] [2025-02-06 18:45:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569132560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:45:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564158740] [2025-02-06 18:45:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:58,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:45:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:58,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:45:58,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:45:58,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 152 [2025-02-06 18:45:58,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2025-02-06 18:45:58,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:58,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 152 [2025-02-06 18:45:58,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:00,199 INFO L124 PetriNetUnfolderBase]: 11084/24183 cut-off events. [2025-02-06 18:46:00,199 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2025-02-06 18:46:00,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42435 conditions, 24183 events. 11084/24183 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 240530 event pairs, 2648 based on Foata normal form. 256/22773 useless extension candidates. Maximal degree in co-relation 18558. Up to 13506 conditions per place. [2025-02-06 18:46:00,429 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 144 selfloop transitions, 6 changer transitions 0/220 dead transitions. [2025-02-06 18:46:00,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 220 transitions, 774 flow [2025-02-06 18:46:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:46:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:46:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 571 transitions. [2025-02-06 18:46:00,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6260964912280702 [2025-02-06 18:46:00,432 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 296 flow. Second operand 6 states and 571 transitions. [2025-02-06 18:46:00,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 220 transitions, 774 flow [2025-02-06 18:46:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 220 transitions, 772 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:46:00,442 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 302 flow [2025-02-06 18:46:00,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2025-02-06 18:46:00,444 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2025-02-06 18:46:00,445 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 302 flow [2025-02-06 18:46:00,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2025-02-06 18:46:00,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:00,445 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:46:00,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:46:00,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:46:00,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1477664405, now seen corresponding path program 1 times [2025-02-06 18:46:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:00,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460034887] [2025-02-06 18:46:00,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:00,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:00,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:46:00,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:46:00,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:00,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460034887] [2025-02-06 18:46:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460034887] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:00,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:00,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:46:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067250861] [2025-02-06 18:46:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:00,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:00,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:00,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:00,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 152 [2025-02-06 18:46:00,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-02-06 18:46:00,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:00,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 152 [2025-02-06 18:46:00,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:02,055 INFO L124 PetriNetUnfolderBase]: 10565/22406 cut-off events. [2025-02-06 18:46:02,056 INFO L125 PetriNetUnfolderBase]: For 2020/2020 co-relation queries the response was YES. [2025-02-06 18:46:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40472 conditions, 22406 events. 10565/22406 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 217842 event pairs, 735 based on Foata normal form. 256/21655 useless extension candidates. Maximal degree in co-relation 19156. Up to 14236 conditions per place. [2025-02-06 18:46:02,185 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 113 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2025-02-06 18:46:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 189 transitions, 658 flow [2025-02-06 18:46:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2025-02-06 18:46:02,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6546052631578947 [2025-02-06 18:46:02,188 INFO L175 Difference]: Start difference. First operand has 137 places, 129 transitions, 302 flow. Second operand 4 states and 398 transitions. [2025-02-06 18:46:02,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 189 transitions, 658 flow [2025-02-06 18:46:02,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 642 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 18:46:02,206 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 302 flow [2025-02-06 18:46:02,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2025-02-06 18:46:02,208 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 6 predicate places. [2025-02-06 18:46:02,208 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 302 flow [2025-02-06 18:46:02,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2025-02-06 18:46:02,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:02,209 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-06 18:46:02,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:46:02,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:46:02,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1598663110, now seen corresponding path program 1 times [2025-02-06 18:46:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146498148] [2025-02-06 18:46:02,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:02,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:46:02,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:46:02,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:02,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:02,235 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:46:02,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:46:02,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:46:02,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:02,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:02,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:46:02,260 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:46:02,260 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-06 18:46:02,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-06 18:46:02,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-06 18:46:02,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-06 18:46:02,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:46:02,263 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 18:46:02,263 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:46:02,263 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 18:46:02,310 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:46:02,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 200 transitions, 427 flow [2025-02-06 18:46:02,351 INFO L124 PetriNetUnfolderBase]: 67/389 cut-off events. [2025-02-06 18:46:02,351 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 18:46:02,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 389 events. 67/389 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2029 event pairs, 1 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 274. Up to 12 conditions per place. [2025-02-06 18:46:02,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 200 transitions, 427 flow [2025-02-06 18:46:02,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 200 transitions, 427 flow [2025-02-06 18:46:02,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:46:02,361 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;@52466a8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:46:02,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-06 18:46:02,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:46:02,363 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:46:02,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:46:02,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:02,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:46:02,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-06 18:46:02,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash 761120784, now seen corresponding path program 1 times [2025-02-06 18:46:02,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:02,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478901509] [2025-02-06 18:46:02,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:02,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:46:02,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:46:02,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:02,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478901509] [2025-02-06 18:46:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478901509] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:02,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86352617] [2025-02-06 18:46:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:02,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:02,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:02,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:02,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 200 [2025-02-06 18:46:02,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 200 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2025-02-06 18:46:02,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:02,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 200 [2025-02-06 18:46:02,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand