./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --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/weaver/chl-file-item-symm.wvr.c -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 3bc77f08e5fdc1758b216096ce0b18debc22015dafe53c78389dc7da36650394 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:07:59,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:07:59,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:07:59,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:07:59,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:07:59,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:07:59,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:07:59,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:07:59,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:07:59,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:07:59,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:07:59,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:07:59,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:07:59,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:07:59,631 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:59,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:07:59,631 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:07:59,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:07:59,632 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 -> 3bc77f08e5fdc1758b216096ce0b18debc22015dafe53c78389dc7da36650394 [2025-02-08 14:07:59,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:07:59,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:07:59,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:07:59,842 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:07:59,842 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:07:59,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2025-02-08 14:08:01,003 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/220eb37a6/46a7da8020e84709b839a2596492dbe1/FLAGb2f5d7a3c [2025-02-08 14:08:01,269 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:08:01,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2025-02-08 14:08:01,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/220eb37a6/46a7da8020e84709b839a2596492dbe1/FLAGb2f5d7a3c [2025-02-08 14:08:01,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/220eb37a6/46a7da8020e84709b839a2596492dbe1 [2025-02-08 14:08:01,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:08:01,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:08:01,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:01,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:08:01,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:08:01,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50179843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01, skipping insertion in model container [2025-02-08 14:08:01,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:08:01,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:01,437 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:08:01,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:01,469 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:08:01,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01 WrapperNode [2025-02-08 14:08:01,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:01,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:01,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:08:01,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:08:01,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,503 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 171 [2025-02-08 14:08:01,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:01,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:08:01,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:08:01,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:08:01,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,526 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 14:08:01,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,534 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:08:01,541 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:08:01,541 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:08:01,541 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:08:01,542 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (1/1) ... [2025-02-08 14:08:01,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:01,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:01,577 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 14:08:01,585 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 14:08:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:08:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:08:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:08:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:08:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:08:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:08:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:08:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:08:01,604 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 14:08:01,679 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:08:01,681 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:08:01,806 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-9: #t~ite2#1 := #t~ret1#1; [2025-02-08 14:08:01,806 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-10: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret1#1 && #t~ret1#1 <= 2147483647; [2025-02-08 14:08:01,806 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-11: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:01,806 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-12: havoc minus_#t~short21#1, minus_#t~short22#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:01,806 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-13: #t~ret1#1 := minus_#res#1; [2025-02-08 14:08:01,863 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-9: #t~ite7#1 := #t~ret6#1; [2025-02-08 14:08:01,863 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-10: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret6#1 && #t~ret6#1 <= 2147483647; [2025-02-08 14:08:01,864 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-11: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:01,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-12: havoc minus_#t~short21#1, minus_#t~short22#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:01,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-13: #t~ret6#1 := minus_#res#1; [2025-02-08 14:08:01,940 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:08:01,941 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:08:02,105 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:08:02,106 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:08:02,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:02 BoogieIcfgContainer [2025-02-08 14:08:02,106 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:08:02,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:08:02,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:08:02,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:08:02,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:08:01" (1/3) ... [2025-02-08 14:08:02,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c6e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:02, skipping insertion in model container [2025-02-08 14:08:02,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:01" (2/3) ... [2025-02-08 14:08:02,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c6e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:02, skipping insertion in model container [2025-02-08 14:08:02,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:02" (3/3) ... [2025-02-08 14:08:02,112 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2025-02-08 14:08:02,124 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:08:02,126 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-file-item-symm.wvr.c that has 3 procedures, 61 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-02-08 14:08:02,126 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:08:02,185 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:08:02,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 70 transitions, 154 flow [2025-02-08 14:08:02,260 INFO L124 PetriNetUnfolderBase]: 10/68 cut-off events. [2025-02-08 14:08:02,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:08:02,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 10/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-02-08 14:08:02,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 70 transitions, 154 flow [2025-02-08 14:08:02,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 66 transitions, 141 flow [2025-02-08 14:08:02,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:08:02,292 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;@2ed65e7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:08:02,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-08 14:08:02,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:08:02,305 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2025-02-08 14:08:02,305 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:08:02,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:02,306 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:02,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:02,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1928762935, now seen corresponding path program 1 times [2025-02-08 14:08:02,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:02,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445956815] [2025-02-08 14:08:02,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:02,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:08:02,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:08:02,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:02,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:02,550 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 14:08:02,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:02,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445956815] [2025-02-08 14:08:02,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445956815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:02,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309515186] [2025-02-08 14:08:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:02,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:02,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:02,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:02,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-02-08 14:08:02,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:02,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:02,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-02-08 14:08:02,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:02,894 INFO L124 PetriNetUnfolderBase]: 780/1560 cut-off events. [2025-02-08 14:08:02,894 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-08 14:08:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1560 events. 780/1560 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10636 event pairs, 282 based on Foata normal form. 48/1270 useless extension candidates. Maximal degree in co-relation 2755. Up to 623 conditions per place. [2025-02-08 14:08:02,903 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 61 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-02-08 14:08:02,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 97 transitions, 339 flow [2025-02-08 14:08:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2025-02-08 14:08:02,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2025-02-08 14:08:02,911 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 4 states and 204 transitions. [2025-02-08 14:08:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 97 transitions, 339 flow [2025-02-08 14:08:02,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:02,917 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 162 flow [2025-02-08 14:08:02,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2025-02-08 14:08:02,920 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2025-02-08 14:08:02,920 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 162 flow [2025-02-08 14:08:02,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:02,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:02,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:02,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:08:02,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:02,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -337890711, now seen corresponding path program 1 times [2025-02-08 14:08:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:02,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126286845] [2025-02-08 14:08:02,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:02,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:08:02,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:08:02,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:02,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:03,024 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 14:08:03,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:03,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126286845] [2025-02-08 14:08:03,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126286845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:03,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:03,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:03,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405608745] [2025-02-08 14:08:03,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:03,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:03,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:03,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:03,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2025-02-08 14:08:03,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 14:08:03,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:03,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2025-02-08 14:08:03,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:03,209 INFO L124 PetriNetUnfolderBase]: 600/1366 cut-off events. [2025-02-08 14:08:03,209 INFO L125 PetriNetUnfolderBase]: For 211/213 co-relation queries the response was YES. [2025-02-08 14:08:03,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 1366 events. 600/1366 cut-off events. For 211/213 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9669 event pairs, 152 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 1953. Up to 595 conditions per place. [2025-02-08 14:08:03,217 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 42 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2025-02-08 14:08:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 278 flow [2025-02-08 14:08:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2025-02-08 14:08:03,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2025-02-08 14:08:03,218 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 162 flow. Second operand 4 states and 192 transitions. [2025-02-08 14:08:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 278 flow [2025-02-08 14:08:03,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:08:03,225 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 164 flow [2025-02-08 14:08:03,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2025-02-08 14:08:03,226 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2025-02-08 14:08:03,226 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 164 flow [2025-02-08 14:08:03,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 14:08:03,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:03,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:03,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:08:03,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:03,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1250179540, now seen corresponding path program 1 times [2025-02-08 14:08:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349572144] [2025-02-08 14:08:03,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:03,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:08:03,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:08:03,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:03,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:03,319 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 14:08:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349572144] [2025-02-08 14:08:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349572144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:03,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:03,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835849648] [2025-02-08 14:08:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:03,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:03,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:03,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:03,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-02-08 14:08:03,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:08:03,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:03,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-02-08 14:08:03,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:03,537 INFO L124 PetriNetUnfolderBase]: 943/1976 cut-off events. [2025-02-08 14:08:03,537 INFO L125 PetriNetUnfolderBase]: For 439/512 co-relation queries the response was YES. [2025-02-08 14:08:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3800 conditions, 1976 events. 943/1976 cut-off events. For 439/512 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14531 event pairs, 386 based on Foata normal form. 95/1706 useless extension candidates. Maximal degree in co-relation 2368. Up to 795 conditions per place. [2025-02-08 14:08:03,544 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 62 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-02-08 14:08:03,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 388 flow [2025-02-08 14:08:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2025-02-08 14:08:03,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2025-02-08 14:08:03,545 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 164 flow. Second operand 4 states and 202 transitions. [2025-02-08 14:08:03,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 388 flow [2025-02-08 14:08:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:03,547 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 187 flow [2025-02-08 14:08:03,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2025-02-08 14:08:03,548 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2025-02-08 14:08:03,548 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 187 flow [2025-02-08 14:08:03,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:08:03,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:03,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:03,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:08:03,548 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:03,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1884707749, now seen corresponding path program 1 times [2025-02-08 14:08:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112498748] [2025-02-08 14:08:03,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:03,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:08:03,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:08:03,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:03,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:03,587 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 14:08:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:03,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112498748] [2025-02-08 14:08:03,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112498748] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:03,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86180119] [2025-02-08 14:08:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:03,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:03,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:03,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:03,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2025-02-08 14:08:03,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:03,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:03,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2025-02-08 14:08:03,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:03,784 INFO L124 PetriNetUnfolderBase]: 726/1734 cut-off events. [2025-02-08 14:08:03,784 INFO L125 PetriNetUnfolderBase]: For 594/634 co-relation queries the response was YES. [2025-02-08 14:08:03,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3475 conditions, 1734 events. 726/1734 cut-off events. For 594/634 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13130 event pairs, 194 based on Foata normal form. 51/1567 useless extension candidates. Maximal degree in co-relation 2611. Up to 746 conditions per place. [2025-02-08 14:08:03,796 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 45 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2025-02-08 14:08:03,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 321 flow [2025-02-08 14:08:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2025-02-08 14:08:03,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2025-02-08 14:08:03,798 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 187 flow. Second operand 4 states and 188 transitions. [2025-02-08 14:08:03,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 321 flow [2025-02-08 14:08:03,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:08:03,801 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 187 flow [2025-02-08 14:08:03,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2025-02-08 14:08:03,802 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2025-02-08 14:08:03,802 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 187 flow [2025-02-08 14:08:03,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:03,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:03,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:03,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:08:03,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:03,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -100859598, now seen corresponding path program 1 times [2025-02-08 14:08:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:03,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28440382] [2025-02-08 14:08:03,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:03,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:03,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:08:03,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:08:03,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:03,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:03,867 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 14:08:03,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28440382] [2025-02-08 14:08:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28440382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422104195] [2025-02-08 14:08:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:03,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:03,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:03,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:03,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2025-02-08 14:08:03,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 14:08:03,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:03,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2025-02-08 14:08:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:04,067 INFO L124 PetriNetUnfolderBase]: 741/1776 cut-off events. [2025-02-08 14:08:04,068 INFO L125 PetriNetUnfolderBase]: For 601/629 co-relation queries the response was YES. [2025-02-08 14:08:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 1776 events. 741/1776 cut-off events. For 601/629 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13586 event pairs, 202 based on Foata normal form. 28/1568 useless extension candidates. Maximal degree in co-relation 2242. Up to 695 conditions per place. [2025-02-08 14:08:04,081 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 43 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2025-02-08 14:08:04,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 79 transitions, 319 flow [2025-02-08 14:08:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2025-02-08 14:08:04,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2025-02-08 14:08:04,083 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 187 flow. Second operand 4 states and 191 transitions. [2025-02-08 14:08:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 79 transitions, 319 flow [2025-02-08 14:08:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:04,090 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 186 flow [2025-02-08 14:08:04,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2025-02-08 14:08:04,090 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2025-02-08 14:08:04,092 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 186 flow [2025-02-08 14:08:04,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 14:08:04,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:04,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:04,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:08:04,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:04,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1703602380, now seen corresponding path program 1 times [2025-02-08 14:08:04,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:04,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614659788] [2025-02-08 14:08:04,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:04,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:04,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:08:04,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:08:04,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:04,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:04,167 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 14:08:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614659788] [2025-02-08 14:08:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614659788] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375599459] [2025-02-08 14:08:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:04,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:04,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:04,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:04,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:04,191 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-02-08 14:08:04,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 14:08:04,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:04,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-02-08 14:08:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:04,381 INFO L124 PetriNetUnfolderBase]: 787/1846 cut-off events. [2025-02-08 14:08:04,381 INFO L125 PetriNetUnfolderBase]: For 665/706 co-relation queries the response was YES. [2025-02-08 14:08:04,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 1846 events. 787/1846 cut-off events. For 665/706 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14024 event pairs, 394 based on Foata normal form. 52/1638 useless extension candidates. Maximal degree in co-relation 2398. Up to 776 conditions per place. [2025-02-08 14:08:04,388 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 62 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-02-08 14:08:04,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 406 flow [2025-02-08 14:08:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-02-08 14:08:04,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2025-02-08 14:08:04,390 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 186 flow. Second operand 4 states and 199 transitions. [2025-02-08 14:08:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 406 flow [2025-02-08 14:08:04,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:04,394 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 181 flow [2025-02-08 14:08:04,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2025-02-08 14:08:04,395 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2025-02-08 14:08:04,396 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 181 flow [2025-02-08 14:08:04,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 14:08:04,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:04,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:04,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:08:04,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:04,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1703601387, now seen corresponding path program 1 times [2025-02-08 14:08:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265876015] [2025-02-08 14:08:04,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:04,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:08:04,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:08:04,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:04,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:04,519 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 14:08:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265876015] [2025-02-08 14:08:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265876015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:04,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:04,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945649932] [2025-02-08 14:08:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:04,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:04,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:04,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:04,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:08:04,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-02-08 14:08:04,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 14:08:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:04,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-02-08 14:08:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:04,753 INFO L124 PetriNetUnfolderBase]: 924/1882 cut-off events. [2025-02-08 14:08:04,753 INFO L125 PetriNetUnfolderBase]: For 497/556 co-relation queries the response was YES. [2025-02-08 14:08:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 1882 events. 924/1882 cut-off events. For 497/556 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13478 event pairs, 188 based on Foata normal form. 30/1690 useless extension candidates. Maximal degree in co-relation 3205. Up to 866 conditions per place. [2025-02-08 14:08:04,760 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 60 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2025-02-08 14:08:04,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 397 flow [2025-02-08 14:08:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2025-02-08 14:08:04,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6771428571428572 [2025-02-08 14:08:04,763 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 181 flow. Second operand 5 states and 237 transitions. [2025-02-08 14:08:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 397 flow [2025-02-08 14:08:04,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:04,767 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 182 flow [2025-02-08 14:08:04,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2025-02-08 14:08:04,767 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2025-02-08 14:08:04,767 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 182 flow [2025-02-08 14:08:04,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 14:08:04,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:04,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:04,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:08:04,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:04,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1168289488, now seen corresponding path program 1 times [2025-02-08 14:08:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464113153] [2025-02-08 14:08:04,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:04,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:08:04,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:08:04,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:04,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:04,826 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 14:08:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464113153] [2025-02-08 14:08:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464113153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:04,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:04,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:04,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877780508] [2025-02-08 14:08:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:04,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:04,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:04,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:04,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2025-02-08 14:08:04,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:04,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:04,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2025-02-08 14:08:04,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:05,019 INFO L124 PetriNetUnfolderBase]: 740/1733 cut-off events. [2025-02-08 14:08:05,019 INFO L125 PetriNetUnfolderBase]: For 656/684 co-relation queries the response was YES. [2025-02-08 14:08:05,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 1733 events. 740/1733 cut-off events. For 656/684 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13012 event pairs, 202 based on Foata normal form. 57/1567 useless extension candidates. Maximal degree in co-relation 2243. Up to 724 conditions per place. [2025-02-08 14:08:05,030 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 44 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2025-02-08 14:08:05,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 315 flow [2025-02-08 14:08:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-02-08 14:08:05,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2025-02-08 14:08:05,038 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 182 flow. Second operand 4 states and 187 transitions. [2025-02-08 14:08:05,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 315 flow [2025-02-08 14:08:05,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:05,041 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 179 flow [2025-02-08 14:08:05,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2025-02-08 14:08:05,041 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2025-02-08 14:08:05,041 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 179 flow [2025-02-08 14:08:05,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:05,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:05,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:05,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:08:05,042 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:05,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1272035902, now seen corresponding path program 1 times [2025-02-08 14:08:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493915208] [2025-02-08 14:08:05,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:05,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:08:05,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:08:05,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:05,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:05,126 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 14:08:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493915208] [2025-02-08 14:08:05,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493915208] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:05,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:08:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377677846] [2025-02-08 14:08:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:05,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:05,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:05,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:08:05,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-02-08 14:08:05,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 14:08:05,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:05,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-02-08 14:08:05,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:05,378 INFO L124 PetriNetUnfolderBase]: 924/1845 cut-off events. [2025-02-08 14:08:05,378 INFO L125 PetriNetUnfolderBase]: For 644/675 co-relation queries the response was YES. [2025-02-08 14:08:05,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4134 conditions, 1845 events. 924/1845 cut-off events. For 644/675 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12972 event pairs, 187 based on Foata normal form. 31/1714 useless extension candidates. Maximal degree in co-relation 3226. Up to 562 conditions per place. [2025-02-08 14:08:05,385 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 72 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2025-02-08 14:08:05,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 478 flow [2025-02-08 14:08:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2025-02-08 14:08:05,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2025-02-08 14:08:05,387 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 179 flow. Second operand 6 states and 267 transitions. [2025-02-08 14:08:05,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 478 flow [2025-02-08 14:08:05,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:05,389 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 197 flow [2025-02-08 14:08:05,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2025-02-08 14:08:05,390 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2025-02-08 14:08:05,390 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 197 flow [2025-02-08 14:08:05,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 14:08:05,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:05,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:05,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:08:05,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:05,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1857236245, now seen corresponding path program 1 times [2025-02-08 14:08:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647577850] [2025-02-08 14:08:05,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:05,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:05,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:05,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:05,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647577850] [2025-02-08 14:08:05,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647577850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061308725] [2025-02-08 14:08:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:05,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:05,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:05,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:05,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:05,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-02-08 14:08:05,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 14:08:05,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:05,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-02-08 14:08:05,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:05,586 INFO L124 PetriNetUnfolderBase]: 802/1793 cut-off events. [2025-02-08 14:08:05,586 INFO L125 PetriNetUnfolderBase]: For 1234/1336 co-relation queries the response was YES. [2025-02-08 14:08:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 1793 events. 802/1793 cut-off events. For 1234/1336 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13308 event pairs, 408 based on Foata normal form. 113/1696 useless extension candidates. Maximal degree in co-relation 2529. Up to 801 conditions per place. [2025-02-08 14:08:05,594 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 63 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2025-02-08 14:08:05,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 445 flow [2025-02-08 14:08:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2025-02-08 14:08:05,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2025-02-08 14:08:05,595 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 197 flow. Second operand 4 states and 197 transitions. [2025-02-08 14:08:05,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 445 flow [2025-02-08 14:08:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:05,597 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 189 flow [2025-02-08 14:08:05,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2025-02-08 14:08:05,598 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2025-02-08 14:08:05,598 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 189 flow [2025-02-08 14:08:05,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 14:08:05,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:05,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:05,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:08:05,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:05,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1857235252, now seen corresponding path program 1 times [2025-02-08 14:08:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271818343] [2025-02-08 14:08:05,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:05,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:05,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:05,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:05,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:05,702 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 14:08:05,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271818343] [2025-02-08 14:08:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271818343] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:05,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:05,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870277763] [2025-02-08 14:08:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:05,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:05,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:05,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:08:05,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2025-02-08 14:08:05,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 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 14:08:05,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:05,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2025-02-08 14:08:05,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:05,962 INFO L124 PetriNetUnfolderBase]: 937/1860 cut-off events. [2025-02-08 14:08:05,962 INFO L125 PetriNetUnfolderBase]: For 863/995 co-relation queries the response was YES. [2025-02-08 14:08:05,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 1860 events. 937/1860 cut-off events. For 863/995 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12926 event pairs, 203 based on Foata normal form. 104/1754 useless extension candidates. Maximal degree in co-relation 2804. Up to 843 conditions per place. [2025-02-08 14:08:05,970 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 61 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2025-02-08 14:08:05,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 427 flow [2025-02-08 14:08:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2025-02-08 14:08:05,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2025-02-08 14:08:05,972 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 189 flow. Second operand 5 states and 235 transitions. [2025-02-08 14:08:05,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 427 flow [2025-02-08 14:08:05,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:05,975 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 190 flow [2025-02-08 14:08:05,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2025-02-08 14:08:05,975 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2025-02-08 14:08:05,976 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 190 flow [2025-02-08 14:08:05,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 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 14:08:05,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:05,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:05,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:08:05,977 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:05,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1697096690, now seen corresponding path program 1 times [2025-02-08 14:08:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842880459] [2025-02-08 14:08:05,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:05,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:05,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:05,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:05,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:06,021 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 14:08:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842880459] [2025-02-08 14:08:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842880459] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:06,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:06,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:06,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807702423] [2025-02-08 14:08:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:06,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:06,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:06,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:06,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2025-02-08 14:08:06,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:08:06,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:06,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2025-02-08 14:08:06,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:06,248 INFO L124 PetriNetUnfolderBase]: 936/1898 cut-off events. [2025-02-08 14:08:06,248 INFO L125 PetriNetUnfolderBase]: For 918/969 co-relation queries the response was YES. [2025-02-08 14:08:06,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 1898 events. 936/1898 cut-off events. For 918/969 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13523 event pairs, 431 based on Foata normal form. 81/1803 useless extension candidates. Maximal degree in co-relation 3188. Up to 844 conditions per place. [2025-02-08 14:08:06,254 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 48 selfloop transitions, 4 changer transitions 12/90 dead transitions. [2025-02-08 14:08:06,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 409 flow [2025-02-08 14:08:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2025-02-08 14:08:06,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2025-02-08 14:08:06,259 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 190 flow. Second operand 4 states and 197 transitions. [2025-02-08 14:08:06,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 409 flow [2025-02-08 14:08:06,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 90 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:06,261 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 186 flow [2025-02-08 14:08:06,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2025-02-08 14:08:06,263 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2025-02-08 14:08:06,263 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 186 flow [2025-02-08 14:08:06,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 14:08:06,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:06,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:06,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:08:06,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:06,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1739718451, now seen corresponding path program 1 times [2025-02-08 14:08:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:06,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045870488] [2025-02-08 14:08:06,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:06,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:08:06,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:08:06,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:06,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:06,340 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 14:08:06,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045870488] [2025-02-08 14:08:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045870488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:06,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:06,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:08:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361952238] [2025-02-08 14:08:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:06,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:06,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:06,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:08:06,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-02-08 14:08:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 14:08:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-02-08 14:08:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:06,670 INFO L124 PetriNetUnfolderBase]: 1019/2021 cut-off events. [2025-02-08 14:08:06,671 INFO L125 PetriNetUnfolderBase]: For 1213/1317 co-relation queries the response was YES. [2025-02-08 14:08:06,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 2021 events. 1019/2021 cut-off events. For 1213/1317 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14226 event pairs, 233 based on Foata normal form. 104/1953 useless extension candidates. Maximal degree in co-relation 3332. Up to 607 conditions per place. [2025-02-08 14:08:06,678 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 73 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-02-08 14:08:06,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 523 flow [2025-02-08 14:08:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2025-02-08 14:08:06,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-08 14:08:06,679 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 186 flow. Second operand 6 states and 264 transitions. [2025-02-08 14:08:06,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 523 flow [2025-02-08 14:08:06,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:06,683 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 204 flow [2025-02-08 14:08:06,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2025-02-08 14:08:06,684 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2025-02-08 14:08:06,684 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 204 flow [2025-02-08 14:08:06,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 14:08:06,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:06,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:06,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:08:06,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 14:08:06,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -984613445, now seen corresponding path program 1 times [2025-02-08 14:08:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523804010] [2025-02-08 14:08:06,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:06,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:08:06,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:08:06,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:06,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:06,759 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 14:08:06,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:06,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523804010] [2025-02-08 14:08:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523804010] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:06,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:08:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389132176] [2025-02-08 14:08:06,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:06,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:06,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:06,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:08:06,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2025-02-08 14:08:06,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 14:08:06,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:06,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2025-02-08 14:08:06,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:07,011 INFO L124 PetriNetUnfolderBase]: 1019/1932 cut-off events. [2025-02-08 14:08:07,012 INFO L125 PetriNetUnfolderBase]: For 1253/1355 co-relation queries the response was YES. [2025-02-08 14:08:07,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 1932 events. 1019/1932 cut-off events. For 1253/1355 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13063 event pairs, 468 based on Foata normal form. 135/1957 useless extension candidates. Maximal degree in co-relation 3422. Up to 920 conditions per place. [2025-02-08 14:08:07,017 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 121/121 dead transitions. [2025-02-08 14:08:07,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 630 flow [2025-02-08 14:08:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2025-02-08 14:08:07,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2025-02-08 14:08:07,018 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 204 flow. Second operand 6 states and 282 transitions. [2025-02-08 14:08:07,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 630 flow [2025-02-08 14:08:07,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 619 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:07,025 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2025-02-08 14:08:07,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2025-02-08 14:08:07,026 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2025-02-08 14:08:07,027 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2025-02-08 14:08:07,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2025-02-08 14:08:07,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2025-02-08 14:08:07,030 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2025-02-08 14:08:07,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2025-02-08 14:08:07,031 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2025-02-08 14:08:07,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:08:07,031 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:07,034 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:08:07,034 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:08:07,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:08:07 BasicIcfg [2025-02-08 14:08:07,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:08:07,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:08:07,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:08:07,039 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:08:07,040 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:02" (3/4) ... [2025-02-08 14:08:07,040 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:08:07,042 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:08:07,042 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:08:07,046 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2025-02-08 14:08:07,047 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-02-08 14:08:07,047 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 14:08:07,047 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 14:08:07,048 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 14:08:07,103 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:08:07,103 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:08:07,103 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:08:07,104 INFO L158 Benchmark]: Toolchain (without parser) took 5806.25ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 105.5MB in the beginning and 212.9MB in the end (delta: -107.3MB). Peak memory consumption was 170.2MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,104 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:08:07,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.37ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.13ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 92.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,107 INFO L158 Benchmark]: Boogie Preprocessor took 33.38ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:08:07,107 INFO L158 Benchmark]: IcfgBuilder took 565.13ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 47.8MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,107 INFO L158 Benchmark]: TraceAbstraction took 4931.07ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 46.9MB in the beginning and 217.7MB in the end (delta: -170.8MB). Peak memory consumption was 103.1MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,107 INFO L158 Benchmark]: Witness Printer took 64.44ms. Allocated memory is still 419.4MB. Free memory was 217.7MB in the beginning and 212.9MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:07,108 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.37ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 94.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.13ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 92.2MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.38ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 565.13ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 47.8MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4931.07ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 46.9MB in the beginning and 217.7MB in the end (delta: -170.8MB). Peak memory consumption was 103.1MB. Max. memory is 16.1GB. * Witness Printer took 64.44ms. Allocated memory is still 419.4MB. Free memory was 217.7MB in the beginning and 212.9MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 115 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1097 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 895 mSDsluCounter, 183 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1962 IncrementalHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 102 mSDtfsCounter, 1962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=13, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:08:07,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE