./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:08:04,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:08:04,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:08:04,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:08:04,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:08:04,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:08:04,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:08:04,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:08:04,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:08:04,983 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:08:04,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:08:04,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:08:04,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:08:04,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:08:04,985 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:08:04,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:08:04,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:08:04,986 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:08:04,987 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:08:04,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:08:04,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:08:04,988 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2025-03-04 15:08:05,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:08:05,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:08:05,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:08:05,185 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:08:05,185 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:08:05,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2025-03-04 15:08:06,250 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f4c5cc9/77be8ea84b5c47738c2556b0a35f1150/FLAGceb0b0c4c [2025-03-04 15:08:06,566 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:08:06,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2025-03-04 15:08:06,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f4c5cc9/77be8ea84b5c47738c2556b0a35f1150/FLAGceb0b0c4c [2025-03-04 15:08:06,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f4c5cc9/77be8ea84b5c47738c2556b0a35f1150 [2025-03-04 15:08:06,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:08:06,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:08:06,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:08:06,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:08:06,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:08:06,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:06,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd148d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06, skipping insertion in model container [2025-03-04 15:08:06,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:06,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:08:06,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:08:06,898 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:08:06,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:08:06,983 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:08:06,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06 WrapperNode [2025-03-04 15:08:06,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:08:06,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:08:06,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:08:06,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:08:06,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,029 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 156 [2025-03-04 15:08:07,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:08:07,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:08:07,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:08:07,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:08:07,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,064 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2025-03-04 15:08:07,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:08:07,080 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:08:07,083 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:08:07,083 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:08:07,084 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (1/1) ... [2025-03-04 15:08:07,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:08:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:07,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:08:07,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:08:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-04 15:08:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-04 15:08:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-04 15:08:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-04 15:08:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:08:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:08:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:08:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:08:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:08:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:08:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:08:07,142 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:08:07,283 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:08:07,289 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:08:07,540 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-1: pop_#res#1 := 0; [2025-03-04 15:08:07,540 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L984: havoc pop_#t~mem37#1; [2025-03-04 15:08:07,540 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L984-1: havoc pop_#t~ret36#1; [2025-03-04 15:08:07,541 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:08:07,541 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:08:07,663 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:08:07,664 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:08:07,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:08:07 BoogieIcfgContainer [2025-03-04 15:08:07,664 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:08:07,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:08:07,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:08:07,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:08:07,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:08:06" (1/3) ... [2025-03-04 15:08:07,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6a0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:08:07, skipping insertion in model container [2025-03-04 15:08:07,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:08:06" (2/3) ... [2025-03-04 15:08:07,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6a0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:08:07, skipping insertion in model container [2025-03-04 15:08:07,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:08:07" (3/3) ... [2025-03-04 15:08:07,671 INFO L128 eAbstractionObserver]: Analyzing ICFG stack-1.i [2025-03-04 15:08:07,681 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:08:07,682 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack-1.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-04 15:08:07,682 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:08:07,737 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:08:07,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-03-04 15:08:07,804 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-03-04 15:08:07,805 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:08:07,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-03-04 15:08:07,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-03-04 15:08:07,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-03-04 15:08:07,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:08:07,830 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;@f52ab5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:08:07,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-04 15:08:07,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:08:07,840 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-03-04 15:08:07,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:08:07,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:07,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:07,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:07,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -126740260, now seen corresponding path program 1 times [2025-03-04 15:08:07,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096909054] [2025-03-04 15:08:07,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:07,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:08:07,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:08:07,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:07,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096909054] [2025-03-04 15:08:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096909054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:08:08,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546432504] [2025-03-04 15:08:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:08,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:08,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:08,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:08,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-04 15:08:08,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:08,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:08,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-04 15:08:08,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:08,481 INFO L124 PetriNetUnfolderBase]: 924/1822 cut-off events. [2025-03-04 15:08:08,481 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-03-04 15:08:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 1822 events. 924/1822 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9590 event pairs, 287 based on Foata normal form. 36/1594 useless extension candidates. Maximal degree in co-relation 3161. Up to 676 conditions per place. [2025-03-04 15:08:08,524 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 70 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2025-03-04 15:08:08,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 98 transitions, 379 flow [2025-03-04 15:08:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:08:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:08:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-03-04 15:08:08,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-03-04 15:08:08,539 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 166 transitions. [2025-03-04 15:08:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 98 transitions, 379 flow [2025-03-04 15:08:08,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 98 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:08,547 INFO L231 Difference]: Finished difference. Result has 51 places, 57 transitions, 200 flow [2025-03-04 15:08:08,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=57} [2025-03-04 15:08:08,552 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-04 15:08:08,553 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 57 transitions, 200 flow [2025-03-04 15:08:08,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:08,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:08,553 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:08,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:08:08,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:08,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash 366019598, now seen corresponding path program 1 times [2025-03-04 15:08:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:08,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247833193] [2025-03-04 15:08:08,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:08,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:08:08,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:08:08,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:08,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247833193] [2025-03-04 15:08:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247833193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:08:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990903977] [2025-03-04 15:08:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:08,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:08,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:08,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:08,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:08,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 57 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:08,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:08,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:08,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:08,992 INFO L124 PetriNetUnfolderBase]: 1429/2823 cut-off events. [2025-03-04 15:08:08,992 INFO L125 PetriNetUnfolderBase]: For 1521/1521 co-relation queries the response was YES. [2025-03-04 15:08:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6171 conditions, 2823 events. 1429/2823 cut-off events. For 1521/1521 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 15471 event pairs, 440 based on Foata normal form. 113/2821 useless extension candidates. Maximal degree in co-relation 5688. Up to 1214 conditions per place. [2025-03-04 15:08:09,008 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 83 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2025-03-04 15:08:09,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 114 transitions, 587 flow [2025-03-04 15:08:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:08:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:08:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2025-03-04 15:08:09,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2025-03-04 15:08:09,011 INFO L175 Difference]: Start difference. First operand has 51 places, 57 transitions, 200 flow. Second operand 5 states and 158 transitions. [2025-03-04 15:08:09,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 114 transitions, 587 flow [2025-03-04 15:08:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 114 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:08:09,016 INFO L231 Difference]: Finished difference. Result has 59 places, 71 transitions, 378 flow [2025-03-04 15:08:09,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=59, PETRI_TRANSITIONS=71} [2025-03-04 15:08:09,016 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-03-04 15:08:09,016 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 71 transitions, 378 flow [2025-03-04 15:08:09,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:09,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:09,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:09,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:08:09,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:09,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1459370476, now seen corresponding path program 1 times [2025-03-04 15:08:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578950257] [2025-03-04 15:08:09,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:09,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:08:09,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:08:09,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:09,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578950257] [2025-03-04 15:08:09,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578950257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987993852] [2025-03-04 15:08:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:09,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:09,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:09,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:09,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-04 15:08:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-04 15:08:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:09,497 INFO L124 PetriNetUnfolderBase]: 2035/4081 cut-off events. [2025-03-04 15:08:09,498 INFO L125 PetriNetUnfolderBase]: For 4351/4517 co-relation queries the response was YES. [2025-03-04 15:08:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 4081 events. 2035/4081 cut-off events. For 4351/4517 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 25205 event pairs, 1061 based on Foata normal form. 169/4060 useless extension candidates. Maximal degree in co-relation 9113. Up to 2405 conditions per place. [2025-03-04 15:08:09,523 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 98 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2025-03-04 15:08:09,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 121 transitions, 826 flow [2025-03-04 15:08:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-04 15:08:09,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-04 15:08:09,526 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 378 flow. Second operand 4 states and 132 transitions. [2025-03-04 15:08:09,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 121 transitions, 826 flow [2025-03-04 15:08:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 121 transitions, 822 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 15:08:09,537 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 398 flow [2025-03-04 15:08:09,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2025-03-04 15:08:09,539 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-03-04 15:08:09,539 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 398 flow [2025-03-04 15:08:09,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:09,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:09,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:09,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:08:09,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:09,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -12938668, now seen corresponding path program 1 times [2025-03-04 15:08:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239222675] [2025-03-04 15:08:09,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:09,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:09,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:08:09,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:08:09,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:09,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239222675] [2025-03-04 15:08:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239222675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230153001] [2025-03-04 15:08:09,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:09,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:09,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:09,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:09,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-04 15:08:09,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:09,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:09,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-04 15:08:09,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:10,095 INFO L124 PetriNetUnfolderBase]: 2676/5422 cut-off events. [2025-03-04 15:08:10,095 INFO L125 PetriNetUnfolderBase]: For 5631/5773 co-relation queries the response was YES. [2025-03-04 15:08:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13663 conditions, 5422 events. 2676/5422 cut-off events. For 5631/5773 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 37340 event pairs, 1403 based on Foata normal form. 156/5459 useless extension candidates. Maximal degree in co-relation 13067. Up to 3253 conditions per place. [2025-03-04 15:08:10,130 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 92 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2025-03-04 15:08:10,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 780 flow [2025-03-04 15:08:10,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-03-04 15:08:10,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2025-03-04 15:08:10,131 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 398 flow. Second operand 4 states and 133 transitions. [2025-03-04 15:08:10,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 780 flow [2025-03-04 15:08:10,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 115 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:08:10,141 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 420 flow [2025-03-04 15:08:10,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=420, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2025-03-04 15:08:10,142 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2025-03-04 15:08:10,143 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 420 flow [2025-03-04 15:08:10,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:10,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:10,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:10,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:08:10,143 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:10,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash -742253312, now seen corresponding path program 1 times [2025-03-04 15:08:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:10,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302496746] [2025-03-04 15:08:10,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:10,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:08:10,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:08:10,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:10,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302496746] [2025-03-04 15:08:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302496746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:10,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463078589] [2025-03-04 15:08:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:10,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:08:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:10,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:08:10,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:08:10,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-03-04 15:08:10,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:10,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:10,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-03-04 15:08:10,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:10,434 INFO L124 PetriNetUnfolderBase]: 1257/2841 cut-off events. [2025-03-04 15:08:10,434 INFO L125 PetriNetUnfolderBase]: For 2687/2819 co-relation queries the response was YES. [2025-03-04 15:08:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 2841 events. 1257/2841 cut-off events. For 2687/2819 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18432 event pairs, 409 based on Foata normal form. 96/2904 useless extension candidates. Maximal degree in co-relation 4045. Up to 1233 conditions per place. [2025-03-04 15:08:10,455 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 52 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2025-03-04 15:08:10,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 463 flow [2025-03-04 15:08:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:08:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:08:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-03-04 15:08:10,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-04 15:08:10,459 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 420 flow. Second operand 3 states and 96 transitions. [2025-03-04 15:08:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 463 flow [2025-03-04 15:08:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 441 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:10,471 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 274 flow [2025-03-04 15:08:10,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2025-03-04 15:08:10,472 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-04 15:08:10,472 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 274 flow [2025-03-04 15:08:10,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:10,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:10,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:10,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:08:10,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:10,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1092180613, now seen corresponding path program 1 times [2025-03-04 15:08:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382740170] [2025-03-04 15:08:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:10,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:08:10,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:08:10,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:10,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382740170] [2025-03-04 15:08:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382740170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:10,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:10,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667174761] [2025-03-04 15:08:10,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:10,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:10,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:10,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:10,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:10,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:10,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:10,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:10,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:10,861 INFO L124 PetriNetUnfolderBase]: 1552/3494 cut-off events. [2025-03-04 15:08:10,861 INFO L125 PetriNetUnfolderBase]: For 3130/3276 co-relation queries the response was YES. [2025-03-04 15:08:10,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9237 conditions, 3494 events. 1552/3494 cut-off events. For 3130/3276 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24062 event pairs, 927 based on Foata normal form. 70/3561 useless extension candidates. Maximal degree in co-relation 5065. Up to 1997 conditions per place. [2025-03-04 15:08:10,874 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 66 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-03-04 15:08:10,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 542 flow [2025-03-04 15:08:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-04 15:08:10,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-04 15:08:10,875 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 274 flow. Second operand 4 states and 117 transitions. [2025-03-04 15:08:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 542 flow [2025-03-04 15:08:10,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:08:10,880 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 316 flow [2025-03-04 15:08:10,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2025-03-04 15:08:10,880 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2025-03-04 15:08:10,880 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 316 flow [2025-03-04 15:08:10,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:10,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:10,881 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:10,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:08:10,881 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:10,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash 971739265, now seen corresponding path program 1 times [2025-03-04 15:08:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110839116] [2025-03-04 15:08:10,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:10,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:08:10,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:08:10,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:10,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110839116] [2025-03-04 15:08:10,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110839116] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174135598] [2025-03-04 15:08:10,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:10,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:10,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:10,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:10,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:08:11,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:08:11,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:08:11,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:11,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:11,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:08:11,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:11,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:08:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174135598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:11,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:08:11,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-04 15:08:11,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491879424] [2025-03-04 15:08:11,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:11,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:08:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:11,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:08:11,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:08:11,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:11,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:11,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:11,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:11,422 INFO L124 PetriNetUnfolderBase]: 1959/3866 cut-off events. [2025-03-04 15:08:11,422 INFO L125 PetriNetUnfolderBase]: For 4747/4889 co-relation queries the response was YES. [2025-03-04 15:08:11,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10680 conditions, 3866 events. 1959/3866 cut-off events. For 4747/4889 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 24361 event pairs, 287 based on Foata normal form. 117/3864 useless extension candidates. Maximal degree in co-relation 5552. Up to 1713 conditions per place. [2025-03-04 15:08:11,436 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 82 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2025-03-04 15:08:11,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 744 flow [2025-03-04 15:08:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-03-04 15:08:11,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-04 15:08:11,437 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 316 flow. Second operand 4 states and 116 transitions. [2025-03-04 15:08:11,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 744 flow [2025-03-04 15:08:11,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 736 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-04 15:08:11,443 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 318 flow [2025-03-04 15:08:11,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2025-03-04 15:08:11,445 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-04 15:08:11,445 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 318 flow [2025-03-04 15:08:11,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:11,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:11,445 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:11,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:08:11,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:11,646 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:11,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1307214909, now seen corresponding path program 1 times [2025-03-04 15:08:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:11,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663216908] [2025-03-04 15:08:11,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:11,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:08:11,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:08:11,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:11,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:11,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663216908] [2025-03-04 15:08:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663216908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512827818] [2025-03-04 15:08:11,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:11,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:11,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:11,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:11,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:08:11,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:08:11,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:08:11,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:11,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:11,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:08:11,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:11,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:08:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512827818] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:08:11,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:08:11,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-04 15:08:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021989976] [2025-03-04 15:08:11,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:08:11,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:08:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:11,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:08:11,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:08:11,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:11,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 318 flow. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:11,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:11,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:11,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:12,523 INFO L124 PetriNetUnfolderBase]: 2910/6173 cut-off events. [2025-03-04 15:08:12,523 INFO L125 PetriNetUnfolderBase]: For 10438/10702 co-relation queries the response was YES. [2025-03-04 15:08:12,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17940 conditions, 6173 events. 2910/6173 cut-off events. For 10438/10702 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 40972 event pairs, 509 based on Foata normal form. 122/6288 useless extension candidates. Maximal degree in co-relation 10477. Up to 1167 conditions per place. [2025-03-04 15:08:12,552 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 178 selfloop transitions, 33 changer transitions 0/222 dead transitions. [2025-03-04 15:08:12,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 222 transitions, 1589 flow [2025-03-04 15:08:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:08:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:08:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 378 transitions. [2025-03-04 15:08:12,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-04 15:08:12,555 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 318 flow. Second operand 14 states and 378 transitions. [2025-03-04 15:08:12,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 222 transitions, 1589 flow [2025-03-04 15:08:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 222 transitions, 1475 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:12,568 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 615 flow [2025-03-04 15:08:12,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=615, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2025-03-04 15:08:12,570 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2025-03-04 15:08:12,570 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 615 flow [2025-03-04 15:08:12,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:12,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:12,570 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:12,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:08:12,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-04 15:08:12,771 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:12,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash -739477063, now seen corresponding path program 1 times [2025-03-04 15:08:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874561063] [2025-03-04 15:08:12,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:12,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 15:08:12,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:08:12,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:12,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:12,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874561063] [2025-03-04 15:08:12,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874561063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:12,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:12,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:08:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276415023] [2025-03-04 15:08:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:12,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:08:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:12,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:08:12,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:08:12,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:08:12,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:12,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:12,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:08:12,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:13,359 INFO L124 PetriNetUnfolderBase]: 3365/7051 cut-off events. [2025-03-04 15:08:13,359 INFO L125 PetriNetUnfolderBase]: For 12857/13220 co-relation queries the response was YES. [2025-03-04 15:08:13,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20349 conditions, 7051 events. 3365/7051 cut-off events. For 12857/13220 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 48199 event pairs, 704 based on Foata normal form. 80/7130 useless extension candidates. Maximal degree in co-relation 17433. Up to 3063 conditions per place. [2025-03-04 15:08:13,395 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 130 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2025-03-04 15:08:13,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 163 transitions, 1283 flow [2025-03-04 15:08:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:08:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:08:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2025-03-04 15:08:13,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-03-04 15:08:13,397 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 615 flow. Second operand 8 states and 204 transitions. [2025-03-04 15:08:13,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 163 transitions, 1283 flow [2025-03-04 15:08:13,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 163 transitions, 1231 flow, removed 12 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:13,412 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 738 flow [2025-03-04 15:08:13,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2025-03-04 15:08:13,413 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-04 15:08:13,413 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 738 flow [2025-03-04 15:08:13,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:13,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:13,413 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:13,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:08:13,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:13,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 59146531, now seen corresponding path program 1 times [2025-03-04 15:08:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269226040] [2025-03-04 15:08:13,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:13,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 15:08:13,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:08:13,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:13,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:08:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269226040] [2025-03-04 15:08:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269226040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927507916] [2025-03-04 15:08:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:13,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:13,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:13,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:13,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:13,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 738 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:13,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:13,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:13,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:13,956 INFO L124 PetriNetUnfolderBase]: 3666/7669 cut-off events. [2025-03-04 15:08:13,956 INFO L125 PetriNetUnfolderBase]: For 14409/14595 co-relation queries the response was YES. [2025-03-04 15:08:13,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22019 conditions, 7669 events. 3666/7669 cut-off events. For 14409/14595 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 52859 event pairs, 693 based on Foata normal form. 0/7668 useless extension candidates. Maximal degree in co-relation 19097. Up to 3056 conditions per place. [2025-03-04 15:08:13,987 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 148 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2025-03-04 15:08:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 179 transitions, 1802 flow [2025-03-04 15:08:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-03-04 15:08:13,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-04 15:08:13,988 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 738 flow. Second operand 4 states and 116 transitions. [2025-03-04 15:08:13,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 179 transitions, 1802 flow [2025-03-04 15:08:14,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 179 transitions, 1800 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-04 15:08:14,007 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 752 flow [2025-03-04 15:08:14,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=752, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2025-03-04 15:08:14,008 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-03-04 15:08:14,008 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 752 flow [2025-03-04 15:08:14,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:14,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:14,008 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:14,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 15:08:14,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:14,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1885480841, now seen corresponding path program 1 times [2025-03-04 15:08:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942522866] [2025-03-04 15:08:14,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:14,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 15:08:14,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:08:14,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:14,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:14,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942522866] [2025-03-04 15:08:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942522866] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937452225] [2025-03-04 15:08:14,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:14,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:14,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:14,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:14,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:08:14,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 15:08:14,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:08:14,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:14,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:14,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:08:14,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:14,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:08:14,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937452225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:14,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:08:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-04 15:08:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985710240] [2025-03-04 15:08:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:14,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:08:14,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:14,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:08:14,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:08:14,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:14,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:14,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:14,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:14,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:14,822 INFO L124 PetriNetUnfolderBase]: 3844/7390 cut-off events. [2025-03-04 15:08:14,822 INFO L125 PetriNetUnfolderBase]: For 17868/17908 co-relation queries the response was YES. [2025-03-04 15:08:14,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23570 conditions, 7390 events. 3844/7390 cut-off events. For 17868/17908 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 48234 event pairs, 690 based on Foata normal form. 238/7390 useless extension candidates. Maximal degree in co-relation 22694. Up to 4350 conditions per place. [2025-03-04 15:08:14,856 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2025-03-04 15:08:14,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1162 flow [2025-03-04 15:08:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-04 15:08:14,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-04 15:08:14,857 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 752 flow. Second operand 4 states and 112 transitions. [2025-03-04 15:08:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1162 flow [2025-03-04 15:08:14,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 1140 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:08:14,879 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 750 flow [2025-03-04 15:08:14,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=750, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-03-04 15:08:14,879 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-03-04 15:08:14,879 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 750 flow [2025-03-04 15:08:14,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:14,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:14,880 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:08:14,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 15:08:15,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:15,080 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:15,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1679635705, now seen corresponding path program 1 times [2025-03-04 15:08:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918639061] [2025-03-04 15:08:15,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:15,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:08:15,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:08:15,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:15,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:08:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918639061] [2025-03-04 15:08:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918639061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:15,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:08:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121985352] [2025-03-04 15:08:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:15,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:08:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:15,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:08:15,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:08:15,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:15,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 750 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:15,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:15,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:15,630 INFO L124 PetriNetUnfolderBase]: 3445/6889 cut-off events. [2025-03-04 15:08:15,630 INFO L125 PetriNetUnfolderBase]: For 15456/15485 co-relation queries the response was YES. [2025-03-04 15:08:15,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21642 conditions, 6889 events. 3445/6889 cut-off events. For 15456/15485 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 44877 event pairs, 697 based on Foata normal form. 238/7127 useless extension candidates. Maximal degree in co-relation 18875. Up to 3454 conditions per place. [2025-03-04 15:08:15,662 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 106 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2025-03-04 15:08:15,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 1276 flow [2025-03-04 15:08:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:08:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:08:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-03-04 15:08:15,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-04 15:08:15,663 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 750 flow. Second operand 4 states and 116 transitions. [2025-03-04 15:08:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 136 transitions, 1276 flow [2025-03-04 15:08:15,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 1266 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:15,683 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 756 flow [2025-03-04 15:08:15,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-03-04 15:08:15,684 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-03-04 15:08:15,684 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 756 flow [2025-03-04 15:08:15,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:15,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:15,684 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:15,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:08:15,684 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:15,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1256291757, now seen corresponding path program 1 times [2025-03-04 15:08:15,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:15,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223371441] [2025-03-04 15:08:15,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:15,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 15:08:15,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:08:15,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:15,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223371441] [2025-03-04 15:08:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223371441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:15,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:08:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:08:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502444419] [2025-03-04 15:08:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:15,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:08:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:15,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:08:15,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:08:15,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:08:15,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:15,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:15,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:08:15,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:16,278 INFO L124 PetriNetUnfolderBase]: 3043/6128 cut-off events. [2025-03-04 15:08:16,278 INFO L125 PetriNetUnfolderBase]: For 17441/17441 co-relation queries the response was YES. [2025-03-04 15:08:16,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19740 conditions, 6128 events. 3043/6128 cut-off events. For 17441/17441 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 39118 event pairs, 471 based on Foata normal form. 197/6324 useless extension candidates. Maximal degree in co-relation 16748. Up to 3304 conditions per place. [2025-03-04 15:08:16,306 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 84 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2025-03-04 15:08:16,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1144 flow [2025-03-04 15:08:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:08:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:08:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-03-04 15:08:16,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2025-03-04 15:08:16,307 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 756 flow. Second operand 7 states and 162 transitions. [2025-03-04 15:08:16,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1144 flow [2025-03-04 15:08:16,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1113 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:08:16,326 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 786 flow [2025-03-04 15:08:16,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2025-03-04 15:08:16,326 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-04 15:08:16,327 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 786 flow [2025-03-04 15:08:16,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:16,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:16,327 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:16,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:08:16,327 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:16,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1292647868, now seen corresponding path program 1 times [2025-03-04 15:08:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362149235] [2025-03-04 15:08:16,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:16,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:08:16,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:08:16,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:16,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362149235] [2025-03-04 15:08:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362149235] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926969002] [2025-03-04 15:08:16,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:16,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:16,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:08:16,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:08:16,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:08:16,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:16,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:16,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:08:16,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:16,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:08:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926969002] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:08:16,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:08:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-04 15:08:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856069001] [2025-03-04 15:08:16,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:08:16,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 15:08:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:16,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 15:08:16,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-04 15:08:16,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:08:16,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 786 flow. Second operand has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:16,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:16,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:08:16,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:17,405 INFO L124 PetriNetUnfolderBase]: 3382/6845 cut-off events. [2025-03-04 15:08:17,405 INFO L125 PetriNetUnfolderBase]: For 23116/23116 co-relation queries the response was YES. [2025-03-04 15:08:17,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22299 conditions, 6845 events. 3382/6845 cut-off events. For 23116/23116 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 44650 event pairs, 573 based on Foata normal form. 176/7020 useless extension candidates. Maximal degree in co-relation 19457. Up to 1682 conditions per place. [2025-03-04 15:08:17,441 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 161 selfloop transitions, 54 changer transitions 18/242 dead transitions. [2025-03-04 15:08:17,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 242 transitions, 2030 flow [2025-03-04 15:08:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 15:08:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 15:08:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 385 transitions. [2025-03-04 15:08:17,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5013020833333334 [2025-03-04 15:08:17,443 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 786 flow. Second operand 16 states and 385 transitions. [2025-03-04 15:08:17,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 242 transitions, 2030 flow [2025-03-04 15:08:17,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 242 transitions, 2013 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 15:08:17,467 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 1014 flow [2025-03-04 15:08:17,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1014, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2025-03-04 15:08:17,467 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 60 predicate places. [2025-03-04 15:08:17,467 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 1014 flow [2025-03-04 15:08:17,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:17,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:17,468 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-03-04 15:08:17,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:08:17,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:17,668 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:17,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1413035470, now seen corresponding path program 2 times [2025-03-04 15:08:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:17,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563375900] [2025-03-04 15:08:17,669 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:08:17,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:17,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-04 15:08:17,691 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 15:08:17,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:08:17,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563375900] [2025-03-04 15:08:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563375900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130186360] [2025-03-04 15:08:17,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:08:17,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:17,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:17,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:17,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:08:17,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-04 15:08:17,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 15:08:17,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:08:17,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:17,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:08:17,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:18,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:08:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130186360] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:08:18,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:08:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-03-04 15:08:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196064102] [2025-03-04 15:08:18,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:08:18,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 15:08:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:18,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 15:08:18,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-03-04 15:08:18,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 1014 flow. Second operand has 22 states, 22 states have (on average 18.545454545454547) internal successors, (408), 22 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:19,667 INFO L124 PetriNetUnfolderBase]: 5052/10392 cut-off events. [2025-03-04 15:08:19,667 INFO L125 PetriNetUnfolderBase]: For 43384/43384 co-relation queries the response was YES. [2025-03-04 15:08:19,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35327 conditions, 10392 events. 5052/10392 cut-off events. For 43384/43384 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 63285 event pairs, 895 based on Foata normal form. 208/10599 useless extension candidates. Maximal degree in co-relation 22382. Up to 2253 conditions per place. [2025-03-04 15:08:19,712 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 334 selfloop transitions, 71 changer transitions 0/414 dead transitions. [2025-03-04 15:08:19,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 414 transitions, 3828 flow [2025-03-04 15:08:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:08:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:08:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 627 transitions. [2025-03-04 15:08:19,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-04 15:08:19,715 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 1014 flow. Second operand 22 states and 627 transitions. [2025-03-04 15:08:19,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 414 transitions, 3828 flow [2025-03-04 15:08:19,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 414 transitions, 3691 flow, removed 38 selfloop flow, removed 4 redundant places. [2025-03-04 15:08:19,757 INFO L231 Difference]: Finished difference. Result has 127 places, 135 transitions, 1763 flow [2025-03-04 15:08:19,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1763, PETRI_PLACES=127, PETRI_TRANSITIONS=135} [2025-03-04 15:08:19,757 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 81 predicate places. [2025-03-04 15:08:19,757 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 135 transitions, 1763 flow [2025-03-04 15:08:19,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.545454545454547) internal successors, (408), 22 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:19,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:19,758 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:19,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:08:19,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 15:08:19,958 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:19,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash -41547751, now seen corresponding path program 1 times [2025-03-04 15:08:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260448465] [2025-03-04 15:08:19,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:19,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 15:08:19,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 15:08:19,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:19,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260448465] [2025-03-04 15:08:20,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260448465] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213171695] [2025-03-04 15:08:20,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:20,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:20,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:08:20,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 15:08:20,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 15:08:20,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:20,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:20,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:08:20,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:20,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:08:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213171695] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:08:20,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:08:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-04 15:08:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347132463] [2025-03-04 15:08:20,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:08:20,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 15:08:20,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:20,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 15:08:20,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-03-04 15:08:20,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:08:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 1763 flow. Second operand has 16 states, 16 states have (on average 17.0) internal successors, (272), 16 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:20,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:20,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:08:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:21,773 INFO L124 PetriNetUnfolderBase]: 6111/12465 cut-off events. [2025-03-04 15:08:21,773 INFO L125 PetriNetUnfolderBase]: For 62738/62738 co-relation queries the response was YES. [2025-03-04 15:08:21,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43189 conditions, 12465 events. 6111/12465 cut-off events. For 62738/62738 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 79352 event pairs, 734 based on Foata normal form. 72/12536 useless extension candidates. Maximal degree in co-relation 40158. Up to 3367 conditions per place. [2025-03-04 15:08:21,942 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 241 selfloop transitions, 93 changer transitions 0/343 dead transitions. [2025-03-04 15:08:21,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 343 transitions, 3691 flow [2025-03-04 15:08:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:08:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:08:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 438 transitions. [2025-03-04 15:08:21,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2025-03-04 15:08:21,944 INFO L175 Difference]: Start difference. First operand has 127 places, 135 transitions, 1763 flow. Second operand 18 states and 438 transitions. [2025-03-04 15:08:21,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 343 transitions, 3691 flow [2025-03-04 15:08:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 343 transitions, 3593 flow, removed 23 selfloop flow, removed 6 redundant places. [2025-03-04 15:08:22,006 INFO L231 Difference]: Finished difference. Result has 145 places, 164 transitions, 2424 flow [2025-03-04 15:08:22,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2424, PETRI_PLACES=145, PETRI_TRANSITIONS=164} [2025-03-04 15:08:22,007 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 99 predicate places. [2025-03-04 15:08:22,007 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 164 transitions, 2424 flow [2025-03-04 15:08:22,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.0) internal successors, (272), 16 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:22,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:22,007 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:22,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 15:08:22,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 15:08:22,208 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:22,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1733274629, now seen corresponding path program 2 times [2025-03-04 15:08:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285268559] [2025-03-04 15:08:22,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:08:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:22,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 15:08:22,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 15:08:22,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:08:22,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:22,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285268559] [2025-03-04 15:08:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285268559] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200432631] [2025-03-04 15:08:22,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:08:22,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:22,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:22,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:08:22,561 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 15:08:22,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 15:08:22,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:08:22,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:22,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 15:08:22,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:08:22,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:08:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200432631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:08:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:08:22,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 24 [2025-03-04 15:08:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064759204] [2025-03-04 15:08:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:08:22,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:08:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:22,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:08:22,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:08:22,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-04 15:08:22,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 164 transitions, 2424 flow. Second operand has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 13 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:22,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:22,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-04 15:08:22,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:24,518 INFO L124 PetriNetUnfolderBase]: 7105/14180 cut-off events. [2025-03-04 15:08:24,519 INFO L125 PetriNetUnfolderBase]: For 66586/66614 co-relation queries the response was YES. [2025-03-04 15:08:24,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49165 conditions, 14180 events. 7105/14180 cut-off events. For 66586/66614 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 102206 event pairs, 79 based on Foata normal form. 310/14490 useless extension candidates. Maximal degree in co-relation 48963. Up to 3750 conditions per place. [2025-03-04 15:08:24,586 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 192 selfloop transitions, 9 changer transitions 270/483 dead transitions. [2025-03-04 15:08:24,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 483 transitions, 6375 flow [2025-03-04 15:08:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:08:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:08:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2025-03-04 15:08:24,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2025-03-04 15:08:24,587 INFO L175 Difference]: Start difference. First operand has 145 places, 164 transitions, 2424 flow. Second operand 13 states and 398 transitions. [2025-03-04 15:08:24,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 483 transitions, 6375 flow [2025-03-04 15:08:24,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 483 transitions, 5949 flow, removed 75 selfloop flow, removed 20 redundant places. [2025-03-04 15:08:24,670 INFO L231 Difference]: Finished difference. Result has 131 places, 69 transitions, 645 flow [2025-03-04 15:08:24,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=645, PETRI_PLACES=131, PETRI_TRANSITIONS=69} [2025-03-04 15:08:24,673 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-03-04 15:08:24,673 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 69 transitions, 645 flow [2025-03-04 15:08:24,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 13 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:24,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:08:24,673 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:24,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 15:08:24,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:24,874 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-04 15:08:24,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:08:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash 952667391, now seen corresponding path program 1 times [2025-03-04 15:08:24,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:08:24,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006473933] [2025-03-04 15:08:24,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:08:24,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-04 15:08:24,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 15:08:24,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:24,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:08:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:08:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006473933] [2025-03-04 15:08:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006473933] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:08:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959100499] [2025-03-04 15:08:25,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:08:25,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:08:25,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:08:25,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:08:25,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:08:25,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-04 15:08:25,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 15:08:25,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:08:25,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:08:25,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 15:08:25,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:08:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:08:25,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:08:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:08:25,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959100499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:08:25,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:08:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-03-04 15:08:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404168544] [2025-03-04 15:08:25,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:08:25,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 15:08:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:08:25,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 15:08:25,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-04 15:08:25,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:08:25,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 69 transitions, 645 flow. Second operand has 20 states, 20 states have (on average 17.3) internal successors, (346), 20 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:25,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:08:25,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:08:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:08:26,119 INFO L124 PetriNetUnfolderBase]: 2536/5485 cut-off events. [2025-03-04 15:08:26,119 INFO L125 PetriNetUnfolderBase]: For 19613/19613 co-relation queries the response was YES. [2025-03-04 15:08:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18105 conditions, 5485 events. 2536/5485 cut-off events. For 19613/19613 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 32324 event pairs, 505 based on Foata normal form. 16/5500 useless extension candidates. Maximal degree in co-relation 18074. Up to 1845 conditions per place. [2025-03-04 15:08:26,138 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 0 selfloop transitions, 0 changer transitions 175/175 dead transitions. [2025-03-04 15:08:26,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 175 transitions, 1562 flow [2025-03-04 15:08:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 15:08:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 15:08:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 262 transitions. [2025-03-04 15:08:26,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2025-03-04 15:08:26,139 INFO L175 Difference]: Start difference. First operand has 131 places, 69 transitions, 645 flow. Second operand 12 states and 262 transitions. [2025-03-04 15:08:26,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 175 transitions, 1562 flow [2025-03-04 15:08:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 175 transitions, 1333 flow, removed 51 selfloop flow, removed 22 redundant places. [2025-03-04 15:08:26,155 INFO L231 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2025-03-04 15:08:26,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2025-03-04 15:08:26,155 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2025-03-04 15:08:26,155 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2025-03-04 15:08:26,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.3) internal successors, (346), 20 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:08:26,157 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-04 15:08:26,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-04 15:08:26,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 15:08:26,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:08:26,360 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:08:26,363 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:08:26,364 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:08:26,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:08:26 BasicIcfg [2025-03-04 15:08:26,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:08:26,367 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:08:26,368 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:08:26,368 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:08:26,368 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:08:07" (3/4) ... [2025-03-04 15:08:26,369 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:08:26,371 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-04 15:08:26,371 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-04 15:08:26,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-03-04 15:08:26,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-04 15:08:26,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-04 15:08:26,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 15:08:26,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:08:26,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:08:26,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:08:26,431 INFO L158 Benchmark]: Toolchain (without parser) took 19828.87ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 122.8MB in the beginning and 354.2MB in the end (delta: -231.4MB). Peak memory consumption was 976.9MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,432 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:08:26,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.48ms. Allocated memory is still 167.8MB. Free memory was 122.8MB in the beginning and 94.2MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.10ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 91.7MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,434 INFO L158 Benchmark]: Boogie Preprocessor took 48.15ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 89.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:08:26,434 INFO L158 Benchmark]: IcfgBuilder took 584.33ms. Allocated memory is still 167.8MB. Free memory was 89.7MB in the beginning and 52.2MB in the end (delta: 37.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,435 INFO L158 Benchmark]: TraceAbstraction took 18701.26ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 52.2MB in the beginning and 360.1MB in the end (delta: -307.8MB). Peak memory consumption was 901.4MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,435 INFO L158 Benchmark]: Witness Printer took 62.87ms. Allocated memory is still 1.4GB. Free memory was 360.1MB in the beginning and 354.2MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:08:26,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.48ms. Allocated memory is still 167.8MB. Free memory was 122.8MB in the beginning and 94.2MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.10ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 91.7MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.15ms. Allocated memory is still 167.8MB. Free memory was 91.7MB in the beginning and 89.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 584.33ms. Allocated memory is still 167.8MB. Free memory was 89.7MB in the beginning and 52.2MB in the end (delta: 37.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18701.26ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 52.2MB in the beginning and 360.1MB in the end (delta: -307.8MB). Peak memory consumption was 901.4MB. Max. memory is 16.1GB. * Witness Printer took 62.87ms. Allocated memory is still 1.4GB. Free memory was 360.1MB in the beginning and 354.2MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 81 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.6s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1857 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1784 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 292 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4374 IncrementalHoareTripleChecker+Invalid, 4481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 33 mSDtfsCounter, 4374 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 746 GetRequests, 552 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2424occurred in iteration=16, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1095 ConstructedInterpolants, 0 QuantifiedInterpolants, 3119 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2389 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 13 PerfectInterpolantSequences, 134/741 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:08:26,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE