./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:04:51,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:04:51,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:04:51,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:04:51,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:04:51,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:04:51,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:04:51,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:04:51,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:04:51,141 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:04:51,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:04:51,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:04:51,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:04:51,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:04:51,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:04:51,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:04:51,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:04:51,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:04:51,143 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2025-02-08 14:04:51,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:04:51,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:04:51,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:04:51,354 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:04:51,354 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:04:51,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2025-02-08 14:04:52,495 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4b1dc9ecb/cb3b503b4d9c4e14b2668733f99118fc/FLAG9626ea2e9 [2025-02-08 14:04:52,793 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:04:52,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2025-02-08 14:04:52,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4b1dc9ecb/cb3b503b4d9c4e14b2668733f99118fc/FLAG9626ea2e9 [2025-02-08 14:04:53,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4b1dc9ecb/cb3b503b4d9c4e14b2668733f99118fc [2025-02-08 14:04:53,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:04:53,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:04:53,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:04:53,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:04:53,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:04:53,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ed2692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53, skipping insertion in model container [2025-02-08 14:04:53,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:04:53,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:04:53,293 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:04:53,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:04:53,340 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:04:53,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53 WrapperNode [2025-02-08 14:04:53,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:04:53,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:04:53,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:04:53,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:04:53,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,361 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2025-02-08 14:04:53,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:04:53,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:04:53,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:04:53,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:04:53,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,374 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-02-08 14:04:53,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,378 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:04:53,381 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:04:53,381 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:04:53,381 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:04:53,381 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (1/1) ... [2025-02-08 14:04:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:04:53,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:53,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:04:53,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:04:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:04:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:04:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:04:53,420 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:04:53,499 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:04:53,500 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:04:53,598 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:04:53,598 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-08 14:04:53,633 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:04:53,633 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:04:53,724 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:04:53,724 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:04:53,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:04:53 BoogieIcfgContainer [2025-02-08 14:04:53,724 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:04:53,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:04:53,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:04:53,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:04:53,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:04:53" (1/3) ... [2025-02-08 14:04:53,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e1c7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:04:53, skipping insertion in model container [2025-02-08 14:04:53,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:53" (2/3) ... [2025-02-08 14:04:53,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e1c7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:04:53, skipping insertion in model container [2025-02-08 14:04:53,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:04:53" (3/3) ... [2025-02-08 14:04:53,730 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2025-02-08 14:04:53,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:04:53,740 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_05-lockfuns_racefree.i that has 2 procedures, 56 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2025-02-08 14:04:53,740 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:04:53,784 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:04:53,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 65 transitions, 137 flow [2025-02-08 14:04:53,847 INFO L124 PetriNetUnfolderBase]: 11/82 cut-off events. [2025-02-08 14:04:53,849 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:04:53,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 82 events. 11/82 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2025-02-08 14:04:53,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 65 transitions, 137 flow [2025-02-08 14:04:53,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 64 transitions, 135 flow [2025-02-08 14:04:53,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:04:53,875 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;@35459477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:04:53,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-08 14:04:53,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:04:53,881 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:04:53,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:53,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:53,882 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:04:53,882 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)] === [2025-02-08 14:04:53,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 306976523, now seen corresponding path program 1 times [2025-02-08 14:04:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:53,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366897602] [2025-02-08 14:04:53,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:53,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:04:53,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:04:53,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:53,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366897602] [2025-02-08 14:04:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366897602] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:54,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175658846] [2025-02-08 14:04:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:54,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:54,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:54,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 65 [2025-02-08 14:04:54,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:54,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:54,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 65 [2025-02-08 14:04:54,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:54,377 INFO L124 PetriNetUnfolderBase]: 169/474 cut-off events. [2025-02-08 14:04:54,377 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:04:54,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 474 events. 169/474 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2340 event pairs, 0 based on Foata normal form. 126/562 useless extension candidates. Maximal degree in co-relation 816. Up to 326 conditions per place. [2025-02-08 14:04:54,384 INFO L140 encePairwiseOnDemand]: 51/65 looper letters, 53 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-02-08 14:04:54,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 281 flow [2025-02-08 14:04:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:04:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:04:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2025-02-08 14:04:54,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6884615384615385 [2025-02-08 14:04:54,396 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 135 flow. Second operand 4 states and 179 transitions. [2025-02-08 14:04:54,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 281 flow [2025-02-08 14:04:54,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 281 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:04:54,404 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 125 flow [2025-02-08 14:04:54,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2025-02-08 14:04:54,410 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2025-02-08 14:04:54,410 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 125 flow [2025-02-08 14:04:54,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:54,411 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:54,411 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:54,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:04:54,411 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)] === [2025-02-08 14:04:54,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1152487195, now seen corresponding path program 1 times [2025-02-08 14:04:54,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791131118] [2025-02-08 14:04:54,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:54,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:54,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:04:54,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:04:54,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:54,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:04:54,440 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:04:54,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:04:54,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:04:54,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:54,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:04:54,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:04:54,474 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:04:54,475 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-08 14:04:54,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-02-08 14:04:54,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-02-08 14:04:54,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-02-08 14:04:54,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-02-08 14:04:54,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:04:54,481 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:04:54,482 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:04:54,483 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:04:54,506 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:04:54,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 101 transitions, 218 flow [2025-02-08 14:04:54,526 INFO L124 PetriNetUnfolderBase]: 21/154 cut-off events. [2025-02-08 14:04:54,526 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:04:54,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 154 events. 21/154 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 598 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2025-02-08 14:04:54,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 101 transitions, 218 flow [2025-02-08 14:04:54,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 101 transitions, 218 flow [2025-02-08 14:04:54,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:04:54,530 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;@35459477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:04:54,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 14:04:54,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:04:54,533 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 14:04:54,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:54,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:54,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:04:54,534 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)] === [2025-02-08 14:04:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash 403394002, now seen corresponding path program 1 times [2025-02-08 14:04:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370877225] [2025-02-08 14:04:54,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:54,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:54,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:04:54,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:04:54,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:54,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370877225] [2025-02-08 14:04:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370877225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:54,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:54,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081460468] [2025-02-08 14:04:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:54,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:54,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:54,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:54,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:54,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 101 [2025-02-08 14:04:54,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:54,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:54,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 101 [2025-02-08 14:04:54,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:55,696 INFO L124 PetriNetUnfolderBase]: 5891/12737 cut-off events. [2025-02-08 14:04:55,696 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2025-02-08 14:04:55,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22114 conditions, 12737 events. 5891/12737 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 110276 event pairs, 2782 based on Foata normal form. 3179/14754 useless extension candidates. Maximal degree in co-relation 1528. Up to 9257 conditions per place. [2025-02-08 14:04:55,763 INFO L140 encePairwiseOnDemand]: 81/101 looper letters, 73 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2025-02-08 14:04:55,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 400 flow [2025-02-08 14:04:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:04:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:04:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2025-02-08 14:04:55,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.655940594059406 [2025-02-08 14:04:55,767 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 218 flow. Second operand 4 states and 265 transitions. [2025-02-08 14:04:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 400 flow [2025-02-08 14:04:55,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 116 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:04:55,769 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 214 flow [2025-02-08 14:04:55,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2025-02-08 14:04:55,770 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2025-02-08 14:04:55,770 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 214 flow [2025-02-08 14:04:55,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:55,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:55,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:55,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:04:55,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:04:55,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 389055431, now seen corresponding path program 1 times [2025-02-08 14:04:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830822309] [2025-02-08 14:04:55,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:55,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:04:55,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:04:55,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:55,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830822309] [2025-02-08 14:04:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830822309] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:55,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:55,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:04:55,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596775810] [2025-02-08 14:04:55,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:55,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:04:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:55,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:04:55,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:04:55,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 101 [2025-02-08 14:04:55,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:55,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:55,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 101 [2025-02-08 14:04:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:56,738 INFO L124 PetriNetUnfolderBase]: 5527/10696 cut-off events. [2025-02-08 14:04:56,739 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2025-02-08 14:04:56,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20371 conditions, 10696 events. 5527/10696 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 84809 event pairs, 622 based on Foata normal form. 196/10239 useless extension candidates. Maximal degree in co-relation 3145. Up to 6025 conditions per place. [2025-02-08 14:04:56,788 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 121 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2025-02-08 14:04:56,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 622 flow [2025-02-08 14:04:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2025-02-08 14:04:56,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6072607260726073 [2025-02-08 14:04:56,790 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 214 flow. Second operand 6 states and 368 transitions. [2025-02-08 14:04:56,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 622 flow [2025-02-08 14:04:56,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:04:56,795 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 220 flow [2025-02-08 14:04:56,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2025-02-08 14:04:56,795 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2025-02-08 14:04:56,795 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 220 flow [2025-02-08 14:04:56,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:56,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:56,796 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:56,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:04:56,796 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:04:56,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1431381011, now seen corresponding path program 1 times [2025-02-08 14:04:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355951569] [2025-02-08 14:04:56,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:56,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:56,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:04:56,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:04:56,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:56,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:56,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355951569] [2025-02-08 14:04:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355951569] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:56,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:56,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:56,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247482389] [2025-02-08 14:04:56,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:56,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:56,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:56,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:56,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 101 [2025-02-08 14:04:56,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:56,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:56,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 101 [2025-02-08 14:04:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:57,807 INFO L124 PetriNetUnfolderBase]: 7335/15903 cut-off events. [2025-02-08 14:04:57,808 INFO L125 PetriNetUnfolderBase]: For 1712/1915 co-relation queries the response was YES. [2025-02-08 14:04:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28697 conditions, 15903 events. 7335/15903 cut-off events. For 1712/1915 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 143574 event pairs, 2168 based on Foata normal form. 248/14916 useless extension candidates. Maximal degree in co-relation 20694. Up to 7118 conditions per place. [2025-02-08 14:04:57,873 INFO L140 encePairwiseOnDemand]: 92/101 looper letters, 132 selfloop transitions, 12 changer transitions 0/185 dead transitions. [2025-02-08 14:04:57,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 185 transitions, 756 flow [2025-02-08 14:04:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:04:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:04:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2025-02-08 14:04:57,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.693069306930693 [2025-02-08 14:04:57,875 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 220 flow. Second operand 5 states and 350 transitions. [2025-02-08 14:04:57,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 185 transitions, 756 flow [2025-02-08 14:04:57,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 185 transitions, 733 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:57,878 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 302 flow [2025-02-08 14:04:57,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2025-02-08 14:04:57,879 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 12 predicate places. [2025-02-08 14:04:57,879 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 302 flow [2025-02-08 14:04:57,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:57,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:57,879 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:04:57,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:04:57,880 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)] === [2025-02-08 14:04:57,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash -824183162, now seen corresponding path program 1 times [2025-02-08 14:04:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395394708] [2025-02-08 14:04:57,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:57,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:04:57,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:04:57,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:57,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:58,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:58,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395394708] [2025-02-08 14:04:58,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395394708] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:58,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:04:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484874706] [2025-02-08 14:04:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:58,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:58,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:58,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:58,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 101 [2025-02-08 14:04:58,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:58,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:58,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 101 [2025-02-08 14:04:58,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:58,871 INFO L124 PetriNetUnfolderBase]: 7271/14836 cut-off events. [2025-02-08 14:04:58,872 INFO L125 PetriNetUnfolderBase]: For 4888/4893 co-relation queries the response was YES. [2025-02-08 14:04:58,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30512 conditions, 14836 events. 7271/14836 cut-off events. For 4888/4893 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 128549 event pairs, 1511 based on Foata normal form. 212/14240 useless extension candidates. Maximal degree in co-relation 22960. Up to 10013 conditions per place. [2025-02-08 14:04:58,988 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 115 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2025-02-08 14:04:58,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 161 transitions, 730 flow [2025-02-08 14:04:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:04:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:04:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2025-02-08 14:04:58,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6410891089108911 [2025-02-08 14:04:58,991 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 302 flow. Second operand 4 states and 259 transitions. [2025-02-08 14:04:58,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 161 transitions, 730 flow [2025-02-08 14:04:59,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 161 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:04:59,020 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 314 flow [2025-02-08 14:04:59,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2025-02-08 14:04:59,020 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2025-02-08 14:04:59,024 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 314 flow [2025-02-08 14:04:59,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:59,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:59,025 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-08 14:04:59,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:04:59,025 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)] === [2025-02-08 14:04:59,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1766022970, now seen corresponding path program 1 times [2025-02-08 14:04:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:59,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563503153] [2025-02-08 14:04:59,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:59,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:04:59,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:04:59,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:59,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:04:59,039 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:04:59,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:04:59,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:04:59,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:59,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:04:59,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:04:59,053 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-08 14:04:59,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-08 14:04:59,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:04:59,054 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-08 14:04:59,054 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:04:59,054 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:04:59,074 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:04:59,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 137 transitions, 301 flow [2025-02-08 14:04:59,093 INFO L124 PetriNetUnfolderBase]: 34/245 cut-off events. [2025-02-08 14:04:59,093 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:04:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 245 events. 34/245 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1058 event pairs, 1 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 169. Up to 12 conditions per place. [2025-02-08 14:04:59,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 137 transitions, 301 flow [2025-02-08 14:04:59,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 137 transitions, 301 flow [2025-02-08 14:04:59,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:04:59,096 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;@35459477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:04:59,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 14:04:59,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:04:59,098 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 14:04:59,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:59,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:59,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:04:59,098 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)] === [2025-02-08 14:04:59,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash 534166461, now seen corresponding path program 1 times [2025-02-08 14:04:59,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:59,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329568636] [2025-02-08 14:04:59,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:59,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:59,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:04:59,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:04:59,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:59,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:59,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329568636] [2025-02-08 14:04:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329568636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974441164] [2025-02-08 14:04:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:59,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:59,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:59,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:59,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:59,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 137 [2025-02-08 14:04:59,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 137 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:59,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:59,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 137 [2025-02-08 14:04:59,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:11,350 INFO L124 PetriNetUnfolderBase]: 129214/239287 cut-off events. [2025-02-08 14:05:11,350 INFO L125 PetriNetUnfolderBase]: For 2092/2092 co-relation queries the response was YES. [2025-02-08 14:05:11,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419141 conditions, 239287 events. 129214/239287 cut-off events. For 2092/2092 co-relation queries the response was YES. Maximal size of possible extension queue 4667. Compared 2652402 event pairs, 104854 based on Foata normal form. 64640/283385 useless extension candidates. Maximal degree in co-relation 120083. Up to 178304 conditions per place. [2025-02-08 14:05:12,403 INFO L140 encePairwiseOnDemand]: 111/137 looper letters, 88 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2025-02-08 14:05:12,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 146 transitions, 501 flow [2025-02-08 14:05:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:05:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:05:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2025-02-08 14:05:12,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6313868613138686 [2025-02-08 14:05:12,405 INFO L175 Difference]: Start difference. First operand has 121 places, 137 transitions, 301 flow. Second operand 4 states and 346 transitions. [2025-02-08 14:05:12,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 146 transitions, 501 flow [2025-02-08 14:05:12,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 146 transitions, 501 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:05:12,408 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 285 flow [2025-02-08 14:05:12,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2025-02-08 14:05:12,409 INFO L279 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2025-02-08 14:05:12,409 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 285 flow [2025-02-08 14:05:12,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:12,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:12,409 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:05:12,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:05:12,410 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:05:12,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash -816873817, now seen corresponding path program 1 times [2025-02-08 14:05:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501020535] [2025-02-08 14:05:12,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:12,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:05:12,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:05:12,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:12,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:12,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501020535] [2025-02-08 14:05:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501020535] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:12,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:12,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:05:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851199260] [2025-02-08 14:05:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:12,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:05:12,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:12,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:05:12,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:05:12,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 137 [2025-02-08 14:05:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 137 [2025-02-08 14:05:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:23,127 INFO L124 PetriNetUnfolderBase]: 121206/195854 cut-off events. [2025-02-08 14:05:23,128 INFO L125 PetriNetUnfolderBase]: For 10719/10719 co-relation queries the response was YES. [2025-02-08 14:05:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376594 conditions, 195854 events. 121206/195854 cut-off events. For 10719/10719 co-relation queries the response was YES. Maximal size of possible extension queue 3771. Compared 1873821 event pairs, 16904 based on Foata normal form. 2940/187611 useless extension candidates. Maximal degree in co-relation 188084. Up to 115292 conditions per place. [2025-02-08 14:05:24,205 INFO L140 encePairwiseOnDemand]: 132/137 looper letters, 162 selfloop transitions, 6 changer transitions 0/223 dead transitions. [2025-02-08 14:05:24,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 223 transitions, 827 flow [2025-02-08 14:05:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:05:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:05:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 499 transitions. [2025-02-08 14:05:24,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6070559610705596 [2025-02-08 14:05:24,207 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 285 flow. Second operand 6 states and 499 transitions. [2025-02-08 14:05:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 223 transitions, 827 flow [2025-02-08 14:05:24,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 223 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:05:24,231 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 291 flow [2025-02-08 14:05:24,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2025-02-08 14:05:24,232 INFO L279 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2025-02-08 14:05:24,232 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 291 flow [2025-02-08 14:05:24,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:24,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:24,236 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:05:24,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:05:24,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:05:24,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash 446715951, now seen corresponding path program 1 times [2025-02-08 14:05:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733713917] [2025-02-08 14:05:24,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:05:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:24,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:05:24,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:05:24,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:05:24,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:05:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733713917] [2025-02-08 14:05:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733713917] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:24,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:05:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815699954] [2025-02-08 14:05:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:24,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:05:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:24,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:05:24,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:05:24,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 137 [2025-02-08 14:05:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:05:24,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:24,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 137 [2025-02-08 14:05:24,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand