./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.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_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:37:12,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:37:12,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:37:12,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:37:12,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:37:12,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:37:12,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:37:12,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:37:12,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:37:12,327 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:37:12,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:37:12,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:37:12,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:37:12,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:37:12,327 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:37:12,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:37:12,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:37:12,329 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:12,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:37:12,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:37:12,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:37:12,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:37:12,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:37:12,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:37:12,330 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 -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2025-03-17 19:37:12,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:37:12,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:37:12,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:37:12,617 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:37:12,618 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:37:12,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2025-03-17 19:37:13,908 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864f1017e/2cc41e67f12946c8a6a4b567510ac77d/FLAGc64979d3c [2025-03-17 19:37:14,238 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:37:14,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2025-03-17 19:37:14,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864f1017e/2cc41e67f12946c8a6a4b567510ac77d/FLAGc64979d3c [2025-03-17 19:37:14,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864f1017e/2cc41e67f12946c8a6a4b567510ac77d [2025-03-17 19:37:14,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:37:14,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:37:14,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:14,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:37:14,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:37:14,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5808d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14, skipping insertion in model container [2025-03-17 19:37:14,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:37:14,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:14,624 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:37:14,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:37:14,708 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:37:14,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14 WrapperNode [2025-03-17 19:37:14,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:37:14,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:14,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:37:14,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:37:14,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,742 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2025-03-17 19:37:14,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:37:14,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:37:14,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:37:14,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:37:14,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,772 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2025-03-17 19:37:14,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:37:14,792 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:37:14,792 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:37:14,792 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:37:14,793 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (1/1) ... [2025-03-17 19:37:14,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:37:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:37:14,828 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 19:37:14,831 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 19:37:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:37:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:37:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:37:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:37:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:37:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:37:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:37:14,850 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 19:37:14,996 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:37:14,998 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:37:15,179 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L707: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:37:15,179 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L707-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:37:15,239 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:37:15,239 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:37:15,354 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:37:15,354 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:37:15,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:15 BoogieIcfgContainer [2025-03-17 19:37:15,355 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:37:15,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:37:15,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:37:15,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:37:15,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:37:14" (1/3) ... [2025-03-17 19:37:15,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57971b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:15, skipping insertion in model container [2025-03-17 19:37:15,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:37:14" (2/3) ... [2025-03-17 19:37:15,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57971b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:37:15, skipping insertion in model container [2025-03-17 19:37:15,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:37:15" (3/3) ... [2025-03-17 19:37:15,365 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2025-03-17 19:37:15,379 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:37:15,380 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_01-simple_racing.i that has 2 procedures, 50 locations, 1 initial locations, 5 loop locations, and 8 error locations. [2025-03-17 19:37:15,381 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:37:15,421 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:37:15,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 59 transitions, 125 flow [2025-03-17 19:37:15,482 INFO L124 PetriNetUnfolderBase]: 11/74 cut-off events. [2025-03-17 19:37:15,484 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:15,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 11/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2025-03-17 19:37:15,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 59 transitions, 125 flow [2025-03-17 19:37:15,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 58 transitions, 123 flow [2025-03-17 19:37:15,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:15,506 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;@ef410e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:15,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 19:37:15,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:15,514 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:37:15,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:15,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:15,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:15,515 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 19:37:15,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 298144798, now seen corresponding path program 1 times [2025-03-17 19:37:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924572276] [2025-03-17 19:37:15,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:15,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:15,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:15,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:15,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:15,847 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 19:37:15,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924572276] [2025-03-17 19:37:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924572276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:15,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:15,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292112765] [2025-03-17 19:37:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:15,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:15,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:15,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:15,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:15,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:37:15,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 19:37:15,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:15,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:37:15,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:16,129 INFO L124 PetriNetUnfolderBase]: 132/369 cut-off events. [2025-03-17 19:37:16,130 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:37:16,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 369 events. 132/369 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1791 event pairs, 0 based on Foata normal form. 63/401 useless extension candidates. Maximal degree in co-relation 636. Up to 255 conditions per place. [2025-03-17 19:37:16,136 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 46 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2025-03-17 19:37:16,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 247 flow [2025-03-17 19:37:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2025-03-17 19:37:16,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2025-03-17 19:37:16,157 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 123 flow. Second operand 4 states and 160 transitions. [2025-03-17 19:37:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 247 flow [2025-03-17 19:37:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:16,167 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 113 flow [2025-03-17 19:37:16,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-17 19:37:16,175 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2025-03-17 19:37:16,175 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 113 flow [2025-03-17 19:37:16,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 19:37:16,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:16,176 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:16,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:37:16,177 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 19:37:16,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 39535717, now seen corresponding path program 1 times [2025-03-17 19:37:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071730210] [2025-03-17 19:37:16,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:16,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:16,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:16,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:16,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:16,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:16,213 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:16,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:37:16,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:37:16,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:16,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:16,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:16,257 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:16,258 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 19:37:16,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-17 19:37:16,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-03-17 19:37:16,261 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-03-17 19:37:16,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-17 19:37:16,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-17 19:37:16,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-17 19:37:16,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-17 19:37:16,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:37:16,262 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 19:37:16,264 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:16,265 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:37:16,288 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:37:16,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 91 transitions, 198 flow [2025-03-17 19:37:16,318 INFO L124 PetriNetUnfolderBase]: 21/140 cut-off events. [2025-03-17 19:37:16,322 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:37:16,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 140 events. 21/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 515 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2025-03-17 19:37:16,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 91 transitions, 198 flow [2025-03-17 19:37:16,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 91 transitions, 198 flow [2025-03-17 19:37:16,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:16,326 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;@ef410e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:16,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-17 19:37:16,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:16,333 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:37:16,333 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:16,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:16,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:16,333 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 19:37:16,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 385015383, now seen corresponding path program 1 times [2025-03-17 19:37:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538104419] [2025-03-17 19:37:16,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:16,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:16,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:16,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:16,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:16,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:16,427 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 19:37:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538104419] [2025-03-17 19:37:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538104419] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685788688] [2025-03-17 19:37:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:16,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:16,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:16,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:16,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 91 [2025-03-17 19:37:16,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 198 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 19:37:16,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 91 [2025-03-17 19:37:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:17,381 INFO L124 PetriNetUnfolderBase]: 4028/8280 cut-off events. [2025-03-17 19:37:17,382 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2025-03-17 19:37:17,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14758 conditions, 8280 events. 4028/8280 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 66153 event pairs, 2274 based on Foata normal form. 1267/8705 useless extension candidates. Maximal degree in co-relation 3174. Up to 6374 conditions per place. [2025-03-17 19:37:17,463 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 64 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2025-03-17 19:37:17,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 102 transitions, 354 flow [2025-03-17 19:37:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-03-17 19:37:17,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2025-03-17 19:37:17,467 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 198 flow. Second operand 4 states and 236 transitions. [2025-03-17 19:37:17,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 102 transitions, 354 flow [2025-03-17 19:37:17,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 102 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:17,471 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 194 flow [2025-03-17 19:37:17,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2025-03-17 19:37:17,472 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 5 predicate places. [2025-03-17 19:37:17,472 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 194 flow [2025-03-17 19:37:17,472 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 19:37:17,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:17,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:17,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:37:17,473 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 19:37:17,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1448420450, now seen corresponding path program 1 times [2025-03-17 19:37:17,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:17,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498513114] [2025-03-17 19:37:17,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:17,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:37:17,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:37:17,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:17,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:17,557 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 19:37:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498513114] [2025-03-17 19:37:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498513114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512564844] [2025-03-17 19:37:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:17,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:17,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:17,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:17,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2025-03-17 19:37:17,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 19:37:17,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:17,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2025-03-17 19:37:17,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:18,762 INFO L124 PetriNetUnfolderBase]: 5385/11273 cut-off events. [2025-03-17 19:37:18,763 INFO L125 PetriNetUnfolderBase]: For 456/789 co-relation queries the response was YES. [2025-03-17 19:37:18,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20431 conditions, 11273 events. 5385/11273 cut-off events. For 456/789 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 97325 event pairs, 1446 based on Foata normal form. 220/10527 useless extension candidates. Maximal degree in co-relation 20331. Up to 5441 conditions per place. [2025-03-17 19:37:18,846 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 118 selfloop transitions, 12 changer transitions 0/167 dead transitions. [2025-03-17 19:37:18,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 167 transitions, 670 flow [2025-03-17 19:37:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 311 transitions. [2025-03-17 19:37:18,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6835164835164835 [2025-03-17 19:37:18,848 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 194 flow. Second operand 5 states and 311 transitions. [2025-03-17 19:37:18,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 167 transitions, 670 flow [2025-03-17 19:37:18,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 167 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:37:18,852 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 286 flow [2025-03-17 19:37:18,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2025-03-17 19:37:18,853 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 12 predicate places. [2025-03-17 19:37:18,854 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 286 flow [2025-03-17 19:37:18,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 19:37:18,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:18,854 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:18,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:37:18,854 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 19:37:18,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:18,855 INFO L85 PathProgramCache]: Analyzing trace with hash -356096694, now seen corresponding path program 1 times [2025-03-17 19:37:18,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:18,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568598990] [2025-03-17 19:37:18,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:18,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:37:18,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:37:18,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:18,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:19,002 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 19:37:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568598990] [2025-03-17 19:37:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568598990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:19,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041675423] [2025-03-17 19:37:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:19,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:19,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:19,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:37:19,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 91 [2025-03-17 19:37:19,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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 19:37:19,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:19,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 91 [2025-03-17 19:37:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:20,323 INFO L124 PetriNetUnfolderBase]: 5504/11322 cut-off events. [2025-03-17 19:37:20,324 INFO L125 PetriNetUnfolderBase]: For 3871/3871 co-relation queries the response was YES. [2025-03-17 19:37:20,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23791 conditions, 11322 events. 5504/11322 cut-off events. For 3871/3871 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 96963 event pairs, 1163 based on Foata normal form. 152/10630 useless extension candidates. Maximal degree in co-relation 18387. Up to 6775 conditions per place. [2025-03-17 19:37:20,409 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 125 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2025-03-17 19:37:20,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 166 transitions, 782 flow [2025-03-17 19:37:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:37:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:37:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2025-03-17 19:37:20,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2025-03-17 19:37:20,411 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 286 flow. Second operand 6 states and 321 transitions. [2025-03-17 19:37:20,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 166 transitions, 782 flow [2025-03-17 19:37:20,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 782 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:20,429 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 294 flow [2025-03-17 19:37:20,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2025-03-17 19:37:20,431 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-03-17 19:37:20,431 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 294 flow [2025-03-17 19:37:20,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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 19:37:20,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:20,432 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:37:20,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:37:20,432 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 19:37:20,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1845904691, now seen corresponding path program 1 times [2025-03-17 19:37:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:20,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967066325] [2025-03-17 19:37:20,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:20,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:37:20,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:37:20,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:20,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:20,534 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 19:37:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967066325] [2025-03-17 19:37:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967066325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:20,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:20,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:37:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455518203] [2025-03-17 19:37:20,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:20,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:20,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:20,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:20,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 91 [2025-03-17 19:37:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 19:37:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:20,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 91 [2025-03-17 19:37:20,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:21,527 INFO L124 PetriNetUnfolderBase]: 5241/10563 cut-off events. [2025-03-17 19:37:21,527 INFO L125 PetriNetUnfolderBase]: For 4424/4424 co-relation queries the response was YES. [2025-03-17 19:37:21,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22859 conditions, 10563 events. 5241/10563 cut-off events. For 4424/4424 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 87743 event pairs, 1379 based on Foata normal form. 160/10116 useless extension candidates. Maximal degree in co-relation 17512. Up to 7253 conditions per place. [2025-03-17 19:37:21,594 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 102 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2025-03-17 19:37:21,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 680 flow [2025-03-17 19:37:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2025-03-17 19:37:21,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6208791208791209 [2025-03-17 19:37:21,596 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 294 flow. Second operand 4 states and 226 transitions. [2025-03-17 19:37:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 680 flow [2025-03-17 19:37:21,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 143 transitions, 664 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:37:21,604 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 294 flow [2025-03-17 19:37:21,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2025-03-17 19:37:21,605 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 14 predicate places. [2025-03-17 19:37:21,605 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 294 flow [2025-03-17 19:37:21,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 19:37:21,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:21,606 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 19:37:21,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:37:21,606 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 19:37:21,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 92927186, now seen corresponding path program 1 times [2025-03-17 19:37:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:21,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810690010] [2025-03-17 19:37:21,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:21,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:21,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:21,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:21,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:21,629 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:37:21,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:37:21,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:37:21,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:21,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:37:21,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:37:21,646 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:37:21,646 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-17 19:37:21,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-03-17 19:37:21,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-03-17 19:37:21,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-03-17 19:37:21,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:37:21,647 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:37:21,654 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:37:21,654 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:37:21,689 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:37:21,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 123 transitions, 273 flow [2025-03-17 19:37:21,705 INFO L124 PetriNetUnfolderBase]: 34/225 cut-off events. [2025-03-17 19:37:21,707 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:37:21,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 225 events. 34/225 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 905 event pairs, 1 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2025-03-17 19:37:21,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 123 transitions, 273 flow [2025-03-17 19:37:21,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 123 transitions, 273 flow [2025-03-17 19:37:21,710 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:37:21,711 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;@ef410e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:37:21,712 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 19:37:21,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:37:21,714 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:37:21,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:37:21,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:21,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:37:21,717 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 19:37:21,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:21,718 INFO L85 PathProgramCache]: Analyzing trace with hash 502423728, now seen corresponding path program 1 times [2025-03-17 19:37:21,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:21,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558589416] [2025-03-17 19:37:21,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:21,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:21,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:37:21,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:37:21,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:21,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:21,768 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 19:37:21,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:21,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558589416] [2025-03-17 19:37:21,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558589416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:21,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:21,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:21,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8888826] [2025-03-17 19:37:21,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:21,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:21,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:21,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:21,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:21,774 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2025-03-17 19:37:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:21,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:21,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2025-03-17 19:37:21,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:29,839 INFO L124 PetriNetUnfolderBase]: 76325/138029 cut-off events. [2025-03-17 19:37:29,839 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2025-03-17 19:37:30,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245126 conditions, 138029 events. 76325/138029 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3134. Compared 1438698 event pairs, 49600 based on Foata normal form. 22462/147889 useless extension candidates. Maximal degree in co-relation 15953. Up to 105935 conditions per place. [2025-03-17 19:37:30,650 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 77 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2025-03-17 19:37:30,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 128 transitions, 443 flow [2025-03-17 19:37:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:37:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:37:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2025-03-17 19:37:30,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6239837398373984 [2025-03-17 19:37:30,652 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 273 flow. Second operand 4 states and 307 transitions. [2025-03-17 19:37:30,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 128 transitions, 443 flow [2025-03-17 19:37:30,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 128 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:37:30,657 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 257 flow [2025-03-17 19:37:30,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2025-03-17 19:37:30,659 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2025-03-17 19:37:30,660 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 257 flow [2025-03-17 19:37:30,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:37:30,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:30,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:30,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:37:30,660 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 19:37:30,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1341798729, now seen corresponding path program 1 times [2025-03-17 19:37:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:30,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377012620] [2025-03-17 19:37:30,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:30,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:37:30,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:37:30,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:30,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:30,721 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 19:37:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377012620] [2025-03-17 19:37:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377012620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:37:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087201908] [2025-03-17 19:37:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:30,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:37:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:30,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:37:30,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:37:30,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 123 [2025-03-17 19:37:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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 19:37:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 123 [2025-03-17 19:37:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:37:42,339 INFO L124 PetriNetUnfolderBase]: 111387/192313 cut-off events. [2025-03-17 19:37:42,339 INFO L125 PetriNetUnfolderBase]: For 7138/11656 co-relation queries the response was YES. [2025-03-17 19:37:42,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354309 conditions, 192313 events. 111387/192313 cut-off events. For 7138/11656 co-relation queries the response was YES. Maximal size of possible extension queue 4498. Compared 1988923 event pairs, 38008 based on Foata normal form. 2847/180394 useless extension candidates. Maximal degree in co-relation 354208. Up to 101431 conditions per place. [2025-03-17 19:37:43,683 INFO L140 encePairwiseOnDemand]: 112/123 looper letters, 170 selfloop transitions, 16 changer transitions 0/236 dead transitions. [2025-03-17 19:37:43,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 236 transitions, 961 flow [2025-03-17 19:37:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:37:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:37:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2025-03-17 19:37:43,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7024390243902439 [2025-03-17 19:37:43,685 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 257 flow. Second operand 5 states and 432 transitions. [2025-03-17 19:37:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 236 transitions, 961 flow [2025-03-17 19:37:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 236 transitions, 957 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:37:43,695 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 383 flow [2025-03-17 19:37:43,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2025-03-17 19:37:43,696 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2025-03-17 19:37:43,696 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 383 flow [2025-03-17 19:37:43,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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 19:37:43,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:37:43,697 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:37:43,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:37:43,697 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 19:37:43,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:37:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -536414998, now seen corresponding path program 1 times [2025-03-17 19:37:43,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:37:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284823166] [2025-03-17 19:37:43,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:37:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:37:43,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:37:43,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:37:43,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:37:43,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:37:43,769 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 19:37:43,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:37:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284823166] [2025-03-17 19:37:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284823166] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:37:43,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:37:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:37:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990300349] [2025-03-17 19:37:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:37:43,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:37:43,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:37:43,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:37:43,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:37:43,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2025-03-17 19:37:43,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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 19:37:43,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:37:43,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2025-03-17 19:37:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand