./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:44:59,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:44:59,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:44:59,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:44:59,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:44:59,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:44:59,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:44:59,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:44:59,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:44:59,675 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:44:59,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:44:59,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:44:59,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:44:59,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:44:59,675 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:44:59,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:44:59,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:44:59,677 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:44:59,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:44:59,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:44:59,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:44:59,678 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 -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2025-02-06 18:44:59,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:44:59,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:44:59,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:44:59,908 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:44:59,909 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:44:59,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2025-02-06 18:45:01,044 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b636bfbc0/476eada4c3e8420faefab296d52c0926/FLAGf5f90c509 [2025-02-06 18:45:01,371 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:45:01,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2025-02-06 18:45:01,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b636bfbc0/476eada4c3e8420faefab296d52c0926/FLAGf5f90c509 [2025-02-06 18:45:01,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b636bfbc0/476eada4c3e8420faefab296d52c0926 [2025-02-06 18:45:01,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:45:01,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:45:01,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:01,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:45:01,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:45:01,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:01,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a77ff79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01, skipping insertion in model container [2025-02-06 18:45:01,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:01,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:45:01,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:01,911 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:45:01,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:01,977 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:45:01,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01 WrapperNode [2025-02-06 18:45:01,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:01,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:01,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:45:01,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:45:01,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:01,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,000 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2025-02-06 18:45:02,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:02,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:45:02,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:45:02,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:45:02,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,021 INFO L175 MemorySlicer]: Split 25 memory accesses to 6 slices as follows [2, 2, 5, 5, 5, 6]. 24 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 0, 5, 5, 5, 1]. The 3 writes are split as follows [0, 1, 0, 0, 0, 2]. [2025-02-06 18:45:02,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,029 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:45:02,041 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:45:02,041 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:45:02,041 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:45:02,042 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (1/1) ... [2025-02-06 18:45:02,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:02,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:45:02,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:45:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:45:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:45:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:45:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:45:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:45:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:45:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:45:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:45:02,104 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:45:02,204 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:45:02,209 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:45:02,369 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L708: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 18:45:02,370 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L708-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 18:45:02,416 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:45:02,417 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:45:02,509 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:45:02,511 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:45:02,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:02 BoogieIcfgContainer [2025-02-06 18:45:02,511 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:45:02,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:45:02,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:45:02,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:45:02,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:45:01" (1/3) ... [2025-02-06 18:45:02,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff3ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:02, skipping insertion in model container [2025-02-06 18:45:02,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:01" (2/3) ... [2025-02-06 18:45:02,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff3ff17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:02, skipping insertion in model container [2025-02-06 18:45:02,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:02" (3/3) ... [2025-02-06 18:45:02,518 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2025-02-06 18:45:02,530 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:45:02,532 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_11-ptr_racing.i that has 2 procedures, 54 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2025-02-06 18:45:02,532 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:45:02,568 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 18:45:02,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 63 transitions, 133 flow [2025-02-06 18:45:02,651 INFO L124 PetriNetUnfolderBase]: 11/79 cut-off events. [2025-02-06 18:45:02,653 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:02,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 11/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 245 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2025-02-06 18:45:02,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 63 transitions, 133 flow [2025-02-06 18:45:02,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 62 transitions, 131 flow [2025-02-06 18:45:02,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:02,672 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;@d62cc52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:02,672 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 18:45:02,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:02,680 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:45:02,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:02,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:02,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:45:02,681 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:45:02,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash 325967904, now seen corresponding path program 1 times [2025-02-06 18:45:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256637069] [2025-02-06 18:45:02,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:02,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:45:02,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:45:02,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:02,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256637069] [2025-02-06 18:45:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256637069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102973635] [2025-02-06 18:45:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:02,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:02,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:02,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:02,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2025-02-06 18:45:02,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:02,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:02,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2025-02-06 18:45:02,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:03,205 INFO L124 PetriNetUnfolderBase]: 144/479 cut-off events. [2025-02-06 18:45:03,206 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:03,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 479 events. 144/479 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2303 event pairs, 100 based on Foata normal form. 116/543 useless extension candidates. Maximal degree in co-relation 780. Up to 277 conditions per place. [2025-02-06 18:45:03,209 INFO L140 encePairwiseOnDemand]: 49/63 looper letters, 49 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2025-02-06 18:45:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 265 flow [2025-02-06 18:45:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2025-02-06 18:45:03,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-02-06 18:45:03,219 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 131 flow. Second operand 4 states and 175 transitions. [2025-02-06 18:45:03,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 265 flow [2025-02-06 18:45:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:03,225 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 121 flow [2025-02-06 18:45:03,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-02-06 18:45:03,228 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2025-02-06 18:45:03,229 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 121 flow [2025-02-06 18:45:03,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:03,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:03,229 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:03,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:45:03,229 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:45:03,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash -10980301, now seen corresponding path program 1 times [2025-02-06 18:45:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848612827] [2025-02-06 18:45:03,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:03,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:45:03,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:45:03,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:03,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:03,254 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:45:03,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:45:03,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:45:03,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:03,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:03,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:45:03,280 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:45:03,281 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-06 18:45:03,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-02-06 18:45:03,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-02-06 18:45:03,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-02-06 18:45:03,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-02-06 18:45:03,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-02-06 18:45:03,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-02-06 18:45:03,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-02-06 18:45:03,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:45:03,285 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 18:45:03,286 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:45:03,287 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:45:03,310 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:45:03,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 98 transitions, 212 flow [2025-02-06 18:45:03,331 INFO L124 PetriNetUnfolderBase]: 21/149 cut-off events. [2025-02-06 18:45:03,332 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 18:45:03,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 149 events. 21/149 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 558 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2025-02-06 18:45:03,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 98 transitions, 212 flow [2025-02-06 18:45:03,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 98 transitions, 212 flow [2025-02-06 18:45:03,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:03,337 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;@d62cc52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:03,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-06 18:45:03,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:03,341 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:45:03,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:03,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:03,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:45:03,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:03,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 419521507, now seen corresponding path program 1 times [2025-02-06 18:45:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224199586] [2025-02-06 18:45:03,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:03,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:45:03,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:45:03,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:03,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:03,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224199586] [2025-02-06 18:45:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224199586] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:03,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229984760] [2025-02-06 18:45:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:03,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:03,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:03,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:03,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2025-02-06 18:45:03,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:03,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:03,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2025-02-06 18:45:03,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:04,391 INFO L124 PetriNetUnfolderBase]: 4742/10621 cut-off events. [2025-02-06 18:45:04,392 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2025-02-06 18:45:04,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18211 conditions, 10621 events. 4742/10621 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 90824 event pairs, 4292 based on Foata normal form. 2708/12169 useless extension candidates. Maximal degree in co-relation 14558. Up to 7478 conditions per place. [2025-02-06 18:45:04,433 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 68 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2025-02-06 18:45:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 380 flow [2025-02-06 18:45:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2025-02-06 18:45:04,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2025-02-06 18:45:04,435 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 212 flow. Second operand 4 states and 260 transitions. [2025-02-06 18:45:04,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 380 flow [2025-02-06 18:45:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 111 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:04,438 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 208 flow [2025-02-06 18:45:04,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2025-02-06 18:45:04,439 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2025-02-06 18:45:04,439 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 208 flow [2025-02-06 18:45:04,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:04,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:04,439 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:04,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:45:04,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:04,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -427343678, now seen corresponding path program 1 times [2025-02-06 18:45:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216708139] [2025-02-06 18:45:04,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:04,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:45:04,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:45:04,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:04,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216708139] [2025-02-06 18:45:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216708139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:04,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:45:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203007811] [2025-02-06 18:45:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:04,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:45:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:04,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:45:04,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:45:04,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2025-02-06 18:45:04,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:04,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:04,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2025-02-06 18:45:04,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:05,251 INFO L124 PetriNetUnfolderBase]: 4430/8899 cut-off events. [2025-02-06 18:45:05,251 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2025-02-06 18:45:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16753 conditions, 8899 events. 4430/8899 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 71195 event pairs, 699 based on Foata normal form. 169/8444 useless extension candidates. Maximal degree in co-relation 14000. Up to 4698 conditions per place. [2025-02-06 18:45:05,293 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 112 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2025-02-06 18:45:05,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 586 flow [2025-02-06 18:45:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:45:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:45:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 359 transitions. [2025-02-06 18:45:05,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6105442176870748 [2025-02-06 18:45:05,295 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 208 flow. Second operand 6 states and 359 transitions. [2025-02-06 18:45:05,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 586 flow [2025-02-06 18:45:05,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 158 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:45:05,302 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 214 flow [2025-02-06 18:45:05,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2025-02-06 18:45:05,303 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2025-02-06 18:45:05,304 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 214 flow [2025-02-06 18:45:05,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:05,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:05,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:05,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:45:05,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:05,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 8556064, now seen corresponding path program 1 times [2025-02-06 18:45:05,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449510889] [2025-02-06 18:45:05,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:05,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:05,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:45:05,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:45:05,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:05,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:05,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449510889] [2025-02-06 18:45:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449510889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:05,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9575710] [2025-02-06 18:45:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:05,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:45:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:05,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:45:05,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:45:05,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 98 [2025-02-06 18:45:05,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:05,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:05,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 98 [2025-02-06 18:45:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:06,486 INFO L124 PetriNetUnfolderBase]: 6470/13751 cut-off events. [2025-02-06 18:45:06,487 INFO L125 PetriNetUnfolderBase]: For 1315/1500 co-relation queries the response was YES. [2025-02-06 18:45:06,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25082 conditions, 13751 events. 6470/13751 cut-off events. For 1315/1500 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 122098 event pairs, 1247 based on Foata normal form. 273/12849 useless extension candidates. Maximal degree in co-relation 23481. Up to 6083 conditions per place. [2025-02-06 18:45:06,554 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 163 selfloop transitions, 17 changer transitions 0/221 dead transitions. [2025-02-06 18:45:06,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 221 transitions, 923 flow [2025-02-06 18:45:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:45:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:45:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2025-02-06 18:45:06,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2025-02-06 18:45:06,557 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 214 flow. Second operand 7 states and 469 transitions. [2025-02-06 18:45:06,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 221 transitions, 923 flow [2025-02-06 18:45:06,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 221 transitions, 896 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 18:45:06,562 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 334 flow [2025-02-06 18:45:06,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2025-02-06 18:45:06,563 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2025-02-06 18:45:06,563 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 334 flow [2025-02-06 18:45:06,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:06,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:06,563 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:45:06,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:45:06,564 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:06,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash -362751785, now seen corresponding path program 1 times [2025-02-06 18:45:06,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:06,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822193166] [2025-02-06 18:45:06,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:06,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:45:06,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:45:06,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:06,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822193166] [2025-02-06 18:45:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822193166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549713999] [2025-02-06 18:45:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:06,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:06,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:06,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:06,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 98 [2025-02-06 18:45:06,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:06,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:06,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 98 [2025-02-06 18:45:06,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:07,283 INFO L124 PetriNetUnfolderBase]: 6285/12966 cut-off events. [2025-02-06 18:45:07,283 INFO L125 PetriNetUnfolderBase]: For 4799/4799 co-relation queries the response was YES. [2025-02-06 18:45:07,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27056 conditions, 12966 events. 6285/12966 cut-off events. For 4799/4799 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 111307 event pairs, 1342 based on Foata normal form. 177/12377 useless extension candidates. Maximal degree in co-relation 26240. Up to 8674 conditions per place. [2025-02-06 18:45:07,353 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 120 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2025-02-06 18:45:07,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 166 transitions, 796 flow [2025-02-06 18:45:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2025-02-06 18:45:07,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2025-02-06 18:45:07,355 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 334 flow. Second operand 4 states and 252 transitions. [2025-02-06 18:45:07,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 166 transitions, 796 flow [2025-02-06 18:45:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 166 transitions, 792 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:45:07,365 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 346 flow [2025-02-06 18:45:07,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2025-02-06 18:45:07,365 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2025-02-06 18:45:07,365 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 346 flow [2025-02-06 18:45:07,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:07,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:07,366 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-06 18:45:07,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:45:07,366 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:45:07,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash -712100716, now seen corresponding path program 1 times [2025-02-06 18:45:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:07,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664291187] [2025-02-06 18:45:07,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:07,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:45:07,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:45:07,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:07,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:07,380 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:45:07,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:45:07,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:45:07,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:07,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:45:07,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:45:07,403 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:45:07,403 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-06 18:45:07,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-06 18:45:07,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-06 18:45:07,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-06 18:45:07,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-06 18:45:07,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-06 18:45:07,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-06 18:45:07,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-06 18:45:07,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-06 18:45:07,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-06 18:45:07,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:45:07,408 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-06 18:45:07,408 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:45:07,408 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 18:45:07,449 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:45:07,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 133 transitions, 293 flow [2025-02-06 18:45:07,478 INFO L124 PetriNetUnfolderBase]: 34/238 cut-off events. [2025-02-06 18:45:07,484 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 18:45:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 238 events. 34/238 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1014 event pairs, 1 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 164. Up to 12 conditions per place. [2025-02-06 18:45:07,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 133 transitions, 293 flow [2025-02-06 18:45:07,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 133 transitions, 293 flow [2025-02-06 18:45:07,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:07,488 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;@d62cc52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:07,488 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 18:45:07,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:07,493 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 18:45:07,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:07,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:07,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:45:07,494 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:07,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:07,494 INFO L85 PathProgramCache]: Analyzing trace with hash 546475785, now seen corresponding path program 1 times [2025-02-06 18:45:07,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560954432] [2025-02-06 18:45:07,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:07,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:45:07,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:45:07,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:07,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:07,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560954432] [2025-02-06 18:45:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560954432] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:07,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:07,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491936769] [2025-02-06 18:45:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:07,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:07,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:07,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:07,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 133 [2025-02-06 18:45:07,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:07,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:07,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 133 [2025-02-06 18:45:07,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:17,098 INFO L124 PetriNetUnfolderBase]: 97039/177154 cut-off events. [2025-02-06 18:45:17,098 INFO L125 PetriNetUnfolderBase]: For 1815/1815 co-relation queries the response was YES. [2025-02-06 18:45:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312806 conditions, 177154 events. 97039/177154 cut-off events. For 1815/1815 co-relation queries the response was YES. Maximal size of possible extension queue 3702. Compared 1887852 event pairs, 91193 based on Foata normal form. 51849/212443 useless extension candidates. Maximal degree in co-relation 137188. Up to 134303 conditions per place. [2025-02-06 18:45:17,952 INFO L140 encePairwiseOnDemand]: 107/133 looper letters, 82 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2025-02-06 18:45:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 140 transitions, 477 flow [2025-02-06 18:45:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2025-02-06 18:45:17,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6390977443609023 [2025-02-06 18:45:17,954 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 293 flow. Second operand 4 states and 340 transitions. [2025-02-06 18:45:17,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 140 transitions, 477 flow [2025-02-06 18:45:17,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 140 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:17,958 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 277 flow [2025-02-06 18:45:17,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2025-02-06 18:45:17,958 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 5 predicate places. [2025-02-06 18:45:17,958 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 277 flow [2025-02-06 18:45:17,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:17,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:17,959 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:17,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:45:17,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:17,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1704834942, now seen corresponding path program 1 times [2025-02-06 18:45:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353033412] [2025-02-06 18:45:17,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:17,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:45:17,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:45:17,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:17,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:18,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:18,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353033412] [2025-02-06 18:45:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353033412] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:18,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:45:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144439840] [2025-02-06 18:45:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:18,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:45:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:18,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:45:18,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:45:18,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 133 [2025-02-06 18:45:18,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:18,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:18,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 133 [2025-02-06 18:45:18,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:26,751 INFO L124 PetriNetUnfolderBase]: 90643/148271 cut-off events. [2025-02-06 18:45:26,752 INFO L125 PetriNetUnfolderBase]: For 8750/8750 co-relation queries the response was YES. [2025-02-06 18:45:27,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284694 conditions, 148271 events. 90643/148271 cut-off events. For 8750/8750 co-relation queries the response was YES. Maximal size of possible extension queue 3100. Compared 1410612 event pairs, 10465 based on Foata normal form. 2366/142131 useless extension candidates. Maximal degree in co-relation 21949. Up to 83865 conditions per place. [2025-02-06 18:45:27,513 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 150 selfloop transitions, 6 changer transitions 0/211 dead transitions. [2025-02-06 18:45:27,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 211 transitions, 779 flow [2025-02-06 18:45:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:45:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:45:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2025-02-06 18:45:27,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6102756892230576 [2025-02-06 18:45:27,515 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 277 flow. Second operand 6 states and 487 transitions. [2025-02-06 18:45:27,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 211 transitions, 779 flow [2025-02-06 18:45:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 211 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:45:27,521 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 283 flow [2025-02-06 18:45:27,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2025-02-06 18:45:27,521 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 8 predicate places. [2025-02-06 18:45:27,521 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 283 flow [2025-02-06 18:45:27,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:27,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:27,522 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:45:27,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:45:27,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1310275172, now seen corresponding path program 1 times [2025-02-06 18:45:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297734811] [2025-02-06 18:45:27,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:27,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:45:27,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:45:27,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:27,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297734811] [2025-02-06 18:45:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297734811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:27,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:27,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921528778] [2025-02-06 18:45:27,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:27,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:27,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:27,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:27,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 133 [2025-02-06 18:45:27,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:27,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:27,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 133 [2025-02-06 18:45:27,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:35,934 INFO L124 PetriNetUnfolderBase]: 84247/136523 cut-off events. [2025-02-06 18:45:35,934 INFO L125 PetriNetUnfolderBase]: For 18319/18319 co-relation queries the response was YES. [2025-02-06 18:45:36,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268943 conditions, 136523 events. 84247/136523 cut-off events. For 18319/18319 co-relation queries the response was YES. Maximal size of possible extension queue 2838. Compared 1274014 event pairs, 10633 based on Foata normal form. 2366/134334 useless extension candidates. Maximal degree in co-relation 118458. Up to 92652 conditions per place. [2025-02-06 18:45:36,803 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 125 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2025-02-06 18:45:36,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 186 transitions, 687 flow [2025-02-06 18:45:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2025-02-06 18:45:36,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2025-02-06 18:45:36,806 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 283 flow. Second operand 4 states and 350 transitions. [2025-02-06 18:45:36,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 186 transitions, 687 flow [2025-02-06 18:45:37,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 186 transitions, 671 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 18:45:37,334 INFO L231 Difference]: Finished difference. Result has 123 places, 114 transitions, 283 flow [2025-02-06 18:45:37,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=123, PETRI_TRANSITIONS=114} [2025-02-06 18:45:37,336 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2025-02-06 18:45:37,336 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 283 flow [2025-02-06 18:45:37,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:37,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:37,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:37,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:45:37,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:45:37,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1480376410, now seen corresponding path program 1 times [2025-02-06 18:45:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388813947] [2025-02-06 18:45:37,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:37,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:45:37,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:45:37,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:37,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388813947] [2025-02-06 18:45:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388813947] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680274916] [2025-02-06 18:45:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:37,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:45:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:37,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:45:37,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:45:37,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 133 [2025-02-06 18:45:37,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:45:37,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:37,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 133 [2025-02-06 18:45:37,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand