./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:39:03,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:39:03,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:39:03,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:39:03,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:39:03,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:39:03,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:39:03,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:39:03,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:39:03,722 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:39:03,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:39:03,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:39:03,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:39:03,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:39:03,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:39:03,725 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:39:03,726 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:03,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:39:03,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:39:03,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:39:03,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:39:03,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:39:03,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:39:03,727 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 -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2025-03-17 19:39:03,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:39:03,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:39:03,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:39:03,942 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:39:03,943 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:39:03,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2025-03-17 19:39:05,045 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6479e8e2f/9dab88d5c584401c8926a71f8216da45/FLAGe5b02019e [2025-03-17 19:39:05,340 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:39:05,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2025-03-17 19:39:05,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6479e8e2f/9dab88d5c584401c8926a71f8216da45/FLAGe5b02019e [2025-03-17 19:39:05,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6479e8e2f/9dab88d5c584401c8926a71f8216da45 [2025-03-17 19:39:05,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:39:05,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:39:05,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:05,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:39:05,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:39:05,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2498cf46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:05, skipping insertion in model container [2025-03-17 19:39:05,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:05" (1/1) ... [2025-03-17 19:39:05,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:39:05,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:05,985 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:39:06,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:06,071 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:39:06,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06 WrapperNode [2025-03-17 19:39:06,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:06,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:06,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:39:06,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:39:06,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,105 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 271 [2025-03-17 19:39:06,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:06,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:39:06,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:39:06,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:39:06,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,133 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 2, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 5 writes are split as follows [0, 0, 1, 4]. [2025-03-17 19:39:06,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,143 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:39:06,150 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:39:06,151 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:39:06,151 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:39:06,151 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (1/1) ... [2025-03-17 19:39:06,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:06,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:39:06,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:39:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:39:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:39:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:39:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:39:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:39:06,198 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:39:06,308 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:39:06,309 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:39:06,583 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L953: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:39:06,584 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:39:06,644 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:39:06,644 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:39:06,907 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:39:06,908 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:39:06,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:06 BoogieIcfgContainer [2025-03-17 19:39:06,908 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:39:06,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:39:06,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:39:06,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:39:06,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:39:05" (1/3) ... [2025-03-17 19:39:06,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b18b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:06, skipping insertion in model container [2025-03-17 19:39:06,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:06" (2/3) ... [2025-03-17 19:39:06,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b18b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:06, skipping insertion in model container [2025-03-17 19:39:06,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:06" (3/3) ... [2025-03-17 19:39:06,914 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2025-03-17 19:39:06,924 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:39:06,925 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_75-tricky_address2_racefree.i that has 2 procedures, 85 locations, 1 initial locations, 11 loop locations, and 14 error locations. [2025-03-17 19:39:06,926 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:39:06,967 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:39:06,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 109 transitions, 225 flow [2025-03-17 19:39:07,042 INFO L124 PetriNetUnfolderBase]: 35/155 cut-off events. [2025-03-17 19:39:07,044 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:07,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 155 events. 35/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 617 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2025-03-17 19:39:07,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 109 transitions, 225 flow [2025-03-17 19:39:07,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 108 transitions, 223 flow [2025-03-17 19:39:07,062 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:07,073 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;@259f0c8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:07,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-17 19:39:07,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:07,077 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:07,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:07,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:07,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:07,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:07,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:07,083 INFO L85 PathProgramCache]: Analyzing trace with hash 642974, now seen corresponding path program 1 times [2025-03-17 19:39:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831673819] [2025-03-17 19:39:07,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:07,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:07,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:07,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:07,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831673819] [2025-03-17 19:39:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831673819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:07,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298925310] [2025-03-17 19:39:07,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:07,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:07,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:07,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:07,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:07,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:07,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:07,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:07,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:07,733 INFO L124 PetriNetUnfolderBase]: 440/1359 cut-off events. [2025-03-17 19:39:07,733 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:07,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1359 events. 440/1359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9039 event pairs, 396 based on Foata normal form. 225/1419 useless extension candidates. Maximal degree in co-relation 2157. Up to 881 conditions per place. [2025-03-17 19:39:07,746 INFO L140 encePairwiseOnDemand]: 83/109 looper letters, 47 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2025-03-17 19:39:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 287 flow [2025-03-17 19:39:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2025-03-17 19:39:07,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344036697247706 [2025-03-17 19:39:07,756 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 223 flow. Second operand 4 states and 233 transitions. [2025-03-17 19:39:07,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 287 flow [2025-03-17 19:39:07,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:07,761 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 207 flow [2025-03-17 19:39:07,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2025-03-17 19:39:07,764 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2025-03-17 19:39:07,764 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 207 flow [2025-03-17 19:39:07,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:07,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:07,765 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:07,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:39:07,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:07,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:07,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1975506514, now seen corresponding path program 1 times [2025-03-17 19:39:07,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432478691] [2025-03-17 19:39:07,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:07,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:07,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:07,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:07,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:07,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:07,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432478691] [2025-03-17 19:39:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432478691] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726468043] [2025-03-17 19:39:07,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:07,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:07,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:07,886 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) [2025-03-17 19:39:07,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:39:07,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:07,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:07,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:07,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:07,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:07,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:08,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:08,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726468043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:08,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544281024] [2025-03-17 19:39:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:08,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:08,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:08,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:08,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:08,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:08,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:08,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:08,276 INFO L124 PetriNetUnfolderBase]: 440/1358 cut-off events. [2025-03-17 19:39:08,276 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:39:08,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 1358 events. 440/1358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9045 event pairs, 396 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 2239. Up to 876 conditions per place. [2025-03-17 19:39:08,285 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 43 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2025-03-17 19:39:08,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 301 flow [2025-03-17 19:39:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 290 transitions. [2025-03-17 19:39:08,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4434250764525994 [2025-03-17 19:39:08,289 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 207 flow. Second operand 6 states and 290 transitions. [2025-03-17 19:39:08,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 301 flow [2025-03-17 19:39:08,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:08,293 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 213 flow [2025-03-17 19:39:08,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2025-03-17 19:39:08,294 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 8 predicate places. [2025-03-17 19:39:08,294 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 213 flow [2025-03-17 19:39:08,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:08,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:08,294 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:08,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:08,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:08,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:08,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:08,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1111160328, now seen corresponding path program 1 times [2025-03-17 19:39:08,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:08,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763372272] [2025-03-17 19:39:08,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:08,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:08,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:08,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:08,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:08,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763372272] [2025-03-17 19:39:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763372272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:08,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679301243] [2025-03-17 19:39:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:08,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:08,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:08,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:08,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:08,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:08,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:08,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:08,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:08,750 INFO L124 PetriNetUnfolderBase]: 440/1357 cut-off events. [2025-03-17 19:39:08,750 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:39:08,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 1357 events. 440/1357 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9026 event pairs, 396 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 2235. Up to 879 conditions per place. [2025-03-17 19:39:08,756 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 44 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-03-17 19:39:08,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 305 flow [2025-03-17 19:39:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2025-03-17 19:39:08,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5107033639143731 [2025-03-17 19:39:08,758 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 213 flow. Second operand 3 states and 167 transitions. [2025-03-17 19:39:08,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 305 flow [2025-03-17 19:39:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 283 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:08,760 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 195 flow [2025-03-17 19:39:08,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2025-03-17 19:39:08,763 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2025-03-17 19:39:08,763 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 195 flow [2025-03-17 19:39:08,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:08,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:08,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:08,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:39:08,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:08,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1620449935, now seen corresponding path program 1 times [2025-03-17 19:39:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:08,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011638063] [2025-03-17 19:39:08,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:08,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:08,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:08,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:08,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011638063] [2025-03-17 19:39:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011638063] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837527403] [2025-03-17 19:39:08,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:08,864 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) [2025-03-17 19:39:08,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:39:08,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:08,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:08,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:08,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:08,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:08,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:08,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837527403] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:08,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689912768] [2025-03-17 19:39:08,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:08,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:08,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:08,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:08,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:08,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 195 flow. Second operand has 10 states, 10 states have (on average 41.3) internal successors, (413), 10 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:08,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:08,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:08,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:09,254 INFO L124 PetriNetUnfolderBase]: 440/1361 cut-off events. [2025-03-17 19:39:09,255 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 19:39:09,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 1361 events. 440/1361 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9029 event pairs, 396 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 2228. Up to 877 conditions per place. [2025-03-17 19:39:09,262 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 44 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2025-03-17 19:39:09,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 312 flow [2025-03-17 19:39:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 333 transitions. [2025-03-17 19:39:09,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.436435124508519 [2025-03-17 19:39:09,264 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 195 flow. Second operand 7 states and 333 transitions. [2025-03-17 19:39:09,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 312 flow [2025-03-17 19:39:09,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 91 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:09,266 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 221 flow [2025-03-17 19:39:09,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2025-03-17 19:39:09,267 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2025-03-17 19:39:09,267 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 221 flow [2025-03-17 19:39:09,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.3) internal successors, (413), 10 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:09,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:09,267 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:09,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:09,468 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,SelfDestructingSolverStorable3 [2025-03-17 19:39:09,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:09,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash 523852017, now seen corresponding path program 2 times [2025-03-17 19:39:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:09,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579757597] [2025-03-17 19:39:09,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:09,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:09,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:09,485 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:09,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579757597] [2025-03-17 19:39:09,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579757597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:09,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:09,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053287232] [2025-03-17 19:39:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:09,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:09,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:09,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:09,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:09,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 109 [2025-03-17 19:39:09,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:09,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:09,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 109 [2025-03-17 19:39:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:09,752 INFO L124 PetriNetUnfolderBase]: 435/1226 cut-off events. [2025-03-17 19:39:09,753 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:39:09,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 1226 events. 435/1226 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8061 event pairs, 0 based on Foata normal form. 19/1123 useless extension candidates. Maximal degree in co-relation 2093. Up to 824 conditions per place. [2025-03-17 19:39:09,758 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 86 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2025-03-17 19:39:09,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 126 transitions, 469 flow [2025-03-17 19:39:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2025-03-17 19:39:09,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5573394495412844 [2025-03-17 19:39:09,760 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 221 flow. Second operand 4 states and 243 transitions. [2025-03-17 19:39:09,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 126 transitions, 469 flow [2025-03-17 19:39:09,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:09,764 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 223 flow [2025-03-17 19:39:09,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2025-03-17 19:39:09,766 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2025-03-17 19:39:09,766 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 223 flow [2025-03-17 19:39:09,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:09,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:09,766 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:09,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:39:09,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:09,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1835158724, now seen corresponding path program 1 times [2025-03-17 19:39:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37472079] [2025-03-17 19:39:09,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:09,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:09,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:09,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:09,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37472079] [2025-03-17 19:39:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37472079] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107841652] [2025-03-17 19:39:09,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:09,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:09,895 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) [2025-03-17 19:39:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:39:09,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:09,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:09,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:09,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:09,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:09,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:09,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107841652] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:10,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:10,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073679193] [2025-03-17 19:39:10,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:10,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:10,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:10,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:10,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:10,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 223 flow. Second operand has 18 states, 18 states have (on average 41.22222222222222) internal successors, (742), 18 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:10,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:10,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:10,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:10,327 INFO L124 PetriNetUnfolderBase]: 439/1309 cut-off events. [2025-03-17 19:39:10,327 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-17 19:39:10,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 1309 events. 439/1309 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8488 event pairs, 396 based on Foata normal form. 4/1174 useless extension candidates. Maximal degree in co-relation 2189. Up to 859 conditions per place. [2025-03-17 19:39:10,332 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 44 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2025-03-17 19:39:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 389 flow [2025-03-17 19:39:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 663 transitions. [2025-03-17 19:39:10,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4055045871559633 [2025-03-17 19:39:10,335 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 223 flow. Second operand 15 states and 663 transitions. [2025-03-17 19:39:10,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 389 flow [2025-03-17 19:39:10,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 383 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:10,341 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 314 flow [2025-03-17 19:39:10,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=314, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2025-03-17 19:39:10,341 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2025-03-17 19:39:10,341 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 314 flow [2025-03-17 19:39:10,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 41.22222222222222) internal successors, (742), 18 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:10,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:10,342 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:10,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:10,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:10,543 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:10,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash -433894340, now seen corresponding path program 2 times [2025-03-17 19:39:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624696280] [2025-03-17 19:39:10,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:10,552 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:10,570 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:10,571 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:10,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:10,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624696280] [2025-03-17 19:39:10,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624696280] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144928965] [2025-03-17 19:39:10,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:10,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:10,818 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) [2025-03-17 19:39:10,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:39:10,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:10,895 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:10,895 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:10,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:10,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:10,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:10,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144928965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:11,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:11,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:11,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582235448] [2025-03-17 19:39:11,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:11,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:11,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:11,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:11,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:11,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2025-03-17 19:39:11,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 314 flow. Second operand has 23 states, 23 states have (on average 41.21739130434783) internal successors, (948), 23 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:11,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:11,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2025-03-17 19:39:11,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:11,377 INFO L124 PetriNetUnfolderBase]: 439/1318 cut-off events. [2025-03-17 19:39:11,377 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-03-17 19:39:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1318 events. 439/1318 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8467 event pairs, 396 based on Foata normal form. 3/1182 useless extension candidates. Maximal degree in co-relation 2172. Up to 859 conditions per place. [2025-03-17 19:39:11,382 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 44 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2025-03-17 19:39:11,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 103 transitions, 498 flow [2025-03-17 19:39:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 908 transitions. [2025-03-17 19:39:11,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3966797728265618 [2025-03-17 19:39:11,386 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 314 flow. Second operand 21 states and 908 transitions. [2025-03-17 19:39:11,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 103 transitions, 498 flow [2025-03-17 19:39:11,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 103 transitions, 488 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:11,388 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 415 flow [2025-03-17 19:39:11,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=415, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2025-03-17 19:39:11,389 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 43 predicate places. [2025-03-17 19:39:11,389 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 415 flow [2025-03-17 19:39:11,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 41.21739130434783) internal successors, (948), 23 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:11,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:11,390 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:11,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:11,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:11,591 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-17 19:39:11,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1432332424, now seen corresponding path program 3 times [2025-03-17 19:39:11,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:11,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721117558] [2025-03-17 19:39:11,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:39:11,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:11,600 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-03-17 19:39:11,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:11,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 19:39:11,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:11,639 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:11,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 19:39:11,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:11,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:11,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:11,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:11,673 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:11,673 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2025-03-17 19:39:11,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2025-03-17 19:39:11,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2025-03-17 19:39:11,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2025-03-17 19:39:11,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2025-03-17 19:39:11,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2025-03-17 19:39:11,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2025-03-17 19:39:11,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:39:11,677 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-03-17 19:39:11,679 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:11,679 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:39:11,705 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:39:11,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 154 transitions, 324 flow [2025-03-17 19:39:11,719 INFO L124 PetriNetUnfolderBase]: 59/265 cut-off events. [2025-03-17 19:39:11,719 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:39:11,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 265 events. 59/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1202 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2025-03-17 19:39:11,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 154 transitions, 324 flow [2025-03-17 19:39:11,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 154 transitions, 324 flow [2025-03-17 19:39:11,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:11,724 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;@259f0c8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:11,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 19:39:11,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:11,725 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:11,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:11,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:11,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:11,726 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash 795896, now seen corresponding path program 1 times [2025-03-17 19:39:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125350065] [2025-03-17 19:39:11,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:11,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:11,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:11,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:11,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125350065] [2025-03-17 19:39:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125350065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:11,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016182329] [2025-03-17 19:39:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:11,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:11,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:11,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:11,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:11,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:11,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:11,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:11,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:14,014 INFO L124 PetriNetUnfolderBase]: 17181/36082 cut-off events. [2025-03-17 19:39:14,015 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2025-03-17 19:39:14,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61802 conditions, 36082 events. 17181/36082 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 361053 event pairs, 15876 based on Foata normal form. 6826/38917 useless extension candidates. Maximal degree in co-relation 50246. Up to 25616 conditions per place. [2025-03-17 19:39:14,187 INFO L140 encePairwiseOnDemand]: 118/154 looper letters, 68 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2025-03-17 19:39:14,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 410 flow [2025-03-17 19:39:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2025-03-17 19:39:14,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525974025974026 [2025-03-17 19:39:14,189 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 324 flow. Second operand 4 states and 324 transitions. [2025-03-17 19:39:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 410 flow [2025-03-17 19:39:14,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:14,193 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 288 flow [2025-03-17 19:39:14,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2025-03-17 19:39:14,195 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 5 predicate places. [2025-03-17 19:39:14,195 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 288 flow [2025-03-17 19:39:14,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:14,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:14,195 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:14,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:39:14,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:14,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2058575854, now seen corresponding path program 1 times [2025-03-17 19:39:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71024346] [2025-03-17 19:39:14,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:14,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:14,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:14,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:14,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71024346] [2025-03-17 19:39:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71024346] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298735053] [2025-03-17 19:39:14,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:14,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:14,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:14,252 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) [2025-03-17 19:39:14,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:39:14,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:14,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:14,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:14,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:14,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:14,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:14,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298735053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:14,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:14,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497623470] [2025-03-17 19:39:14,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:14,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:14,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:14,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:14,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:14,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:14,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:14,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:14,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:14,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:16,353 INFO L124 PetriNetUnfolderBase]: 17181/36081 cut-off events. [2025-03-17 19:39:16,354 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-03-17 19:39:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61812 conditions, 36081 events. 17181/36081 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 361113 event pairs, 15876 based on Foata normal form. 1/32091 useless extension candidates. Maximal degree in co-relation 61793. Up to 25611 conditions per place. [2025-03-17 19:39:16,539 INFO L140 encePairwiseOnDemand]: 149/154 looper letters, 64 selfloop transitions, 6 changer transitions 0/125 dead transitions. [2025-03-17 19:39:16,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 125 transitions, 424 flow [2025-03-17 19:39:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 401 transitions. [2025-03-17 19:39:16,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43398268398268397 [2025-03-17 19:39:16,541 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 288 flow. Second operand 6 states and 401 transitions. [2025-03-17 19:39:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 125 transitions, 424 flow [2025-03-17 19:39:16,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 125 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:16,543 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 294 flow [2025-03-17 19:39:16,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2025-03-17 19:39:16,543 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 8 predicate places. [2025-03-17 19:39:16,543 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 294 flow [2025-03-17 19:39:16,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:16,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:16,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:16,744 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,SelfDestructingSolverStorable9 [2025-03-17 19:39:16,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:16,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 608658658, now seen corresponding path program 1 times [2025-03-17 19:39:16,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113114287] [2025-03-17 19:39:16,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:16,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:16,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:16,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:16,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:16,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113114287] [2025-03-17 19:39:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113114287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:16,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759997227] [2025-03-17 19:39:16,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:16,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:16,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:16,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:16,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:16,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:16,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:16,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:18,400 INFO L124 PetriNetUnfolderBase]: 17181/36080 cut-off events. [2025-03-17 19:39:18,400 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2025-03-17 19:39:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61814 conditions, 36080 events. 17181/36080 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 360941 event pairs, 15876 based on Foata normal form. 1/32091 useless extension candidates. Maximal degree in co-relation 61789. Up to 25614 conditions per place. [2025-03-17 19:39:18,588 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 65 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2025-03-17 19:39:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 124 transitions, 428 flow [2025-03-17 19:39:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2025-03-17 19:39:18,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043290043290043 [2025-03-17 19:39:18,590 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 294 flow. Second operand 3 states and 233 transitions. [2025-03-17 19:39:18,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 124 transitions, 428 flow [2025-03-17 19:39:18,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 406 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:18,592 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 276 flow [2025-03-17 19:39:18,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2025-03-17 19:39:18,593 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 3 predicate places. [2025-03-17 19:39:18,593 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 276 flow [2025-03-17 19:39:18,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:18,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:18,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:39:18,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:18,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 806795894, now seen corresponding path program 1 times [2025-03-17 19:39:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91506380] [2025-03-17 19:39:18,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:18,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:18,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:18,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91506380] [2025-03-17 19:39:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91506380] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591657902] [2025-03-17 19:39:18,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:18,639 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) [2025-03-17 19:39:18,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:39:18,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:18,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:18,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:18,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591657902] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:18,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:18,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060410820] [2025-03-17 19:39:18,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:18,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:18,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:18,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:18,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:18,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:18,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 276 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:18,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:18,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:20,868 INFO L124 PetriNetUnfolderBase]: 17181/36084 cut-off events. [2025-03-17 19:39:20,868 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-17 19:39:20,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61817 conditions, 36084 events. 17181/36084 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 360961 event pairs, 15876 based on Foata normal form. 2/32097 useless extension candidates. Maximal degree in co-relation 61782. Up to 25612 conditions per place. [2025-03-17 19:39:21,037 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 65 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2025-03-17 19:39:21,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 127 transitions, 435 flow [2025-03-17 19:39:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 459 transitions. [2025-03-17 19:39:21,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42578849721706863 [2025-03-17 19:39:21,039 INFO L175 Difference]: Start difference. First operand has 126 places, 124 transitions, 276 flow. Second operand 7 states and 459 transitions. [2025-03-17 19:39:21,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 127 transitions, 435 flow [2025-03-17 19:39:21,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:21,041 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 302 flow [2025-03-17 19:39:21,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2025-03-17 19:39:21,042 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 9 predicate places. [2025-03-17 19:39:21,042 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 302 flow [2025-03-17 19:39:21,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:21,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:21,043 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:21,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 19:39:21,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:21,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:21,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1052793910, now seen corresponding path program 2 times [2025-03-17 19:39:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941137256] [2025-03-17 19:39:21,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:21,253 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:21,256 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:21,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:21,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:21,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941137256] [2025-03-17 19:39:21,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941137256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:21,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:21,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:21,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407090007] [2025-03-17 19:39:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:21,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:21,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:21,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:21,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:21,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2025-03-17 19:39:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2025-03-17 19:39:21,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:23,230 INFO L124 PetriNetUnfolderBase]: 18847/38068 cut-off events. [2025-03-17 19:39:23,230 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-17 19:39:23,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66472 conditions, 38068 events. 18847/38068 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 372392 event pairs, 8622 based on Foata normal form. 19/33850 useless extension candidates. Maximal degree in co-relation 66432. Up to 28225 conditions per place. [2025-03-17 19:39:23,426 INFO L140 encePairwiseOnDemand]: 148/154 looper letters, 111 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2025-03-17 19:39:23,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 166 transitions, 608 flow [2025-03-17 19:39:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2025-03-17 19:39:23,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2025-03-17 19:39:23,428 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 302 flow. Second operand 4 states and 328 transitions. [2025-03-17 19:39:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 166 transitions, 608 flow [2025-03-17 19:39:23,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:23,431 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 322 flow [2025-03-17 19:39:23,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2025-03-17 19:39:23,431 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 12 predicate places. [2025-03-17 19:39:23,431 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 322 flow [2025-03-17 19:39:23,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:23,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:23,432 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:23,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:39:23,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:23,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2078441649, now seen corresponding path program 1 times [2025-03-17 19:39:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568662893] [2025-03-17 19:39:23,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:23,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:23,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:23,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:23,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568662893] [2025-03-17 19:39:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568662893] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157235706] [2025-03-17 19:39:23,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:23,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:23,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:23,530 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) [2025-03-17 19:39:23,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:39:23,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:23,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:23,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:23,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:23,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:23,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:23,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:23,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157235706] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:23,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:23,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:23,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393569496] [2025-03-17 19:39:23,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:23,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:23,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:23,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:23,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:23,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 129 transitions, 322 flow. Second operand has 18 states, 18 states have (on average 56.27777777777778) internal successors, (1013), 18 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:23,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:23,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:23,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:26,164 INFO L124 PetriNetUnfolderBase]: 17179/36363 cut-off events. [2025-03-17 19:39:26,164 INFO L125 PetriNetUnfolderBase]: For 902/1605 co-relation queries the response was YES. [2025-03-17 19:39:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62931 conditions, 36363 events. 17179/36363 cut-off events. For 902/1605 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 365049 event pairs, 15876 based on Foata normal form. 21/32715 useless extension candidates. Maximal degree in co-relation 62854. Up to 25621 conditions per place. [2025-03-17 19:39:26,410 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 66 selfloop transitions, 15 changer transitions 0/137 dead transitions. [2025-03-17 19:39:26,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 532 flow [2025-03-17 19:39:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 909 transitions. [2025-03-17 19:39:26,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3935064935064935 [2025-03-17 19:39:26,412 INFO L175 Difference]: Start difference. First operand has 135 places, 129 transitions, 322 flow. Second operand 15 states and 909 transitions. [2025-03-17 19:39:26,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 532 flow [2025-03-17 19:39:26,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:26,416 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 417 flow [2025-03-17 19:39:26,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2025-03-17 19:39:26,417 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 29 predicate places. [2025-03-17 19:39:26,417 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 417 flow [2025-03-17 19:39:26,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.27777777777778) internal successors, (1013), 18 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:26,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:26,417 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:26,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:39:26,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:26,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:26,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2095865137, now seen corresponding path program 2 times [2025-03-17 19:39:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182909002] [2025-03-17 19:39:26,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:26,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-03-17 19:39:26,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-03-17 19:39:26,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:26,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:26,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:26,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182909002] [2025-03-17 19:39:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182909002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:26,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:26,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:39:26,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397010234] [2025-03-17 19:39:26,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:26,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:26,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:26,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:39:26,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2025-03-17 19:39:26,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 417 flow. Second operand has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:26,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:26,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2025-03-17 19:39:26,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:28,928 INFO L124 PetriNetUnfolderBase]: 17760/34276 cut-off events. [2025-03-17 19:39:28,928 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2025-03-17 19:39:29,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62844 conditions, 34276 events. 17760/34276 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 325583 event pairs, 665 based on Foata normal form. 361/31485 useless extension candidates. Maximal degree in co-relation 62743. Up to 21866 conditions per place. [2025-03-17 19:39:29,163 INFO L140 encePairwiseOnDemand]: 149/154 looper letters, 187 selfloop transitions, 6 changer transitions 0/245 dead transitions. [2025-03-17 19:39:29,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 245 transitions, 1017 flow [2025-03-17 19:39:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2025-03-17 19:39:29,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5465367965367965 [2025-03-17 19:39:29,165 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 417 flow. Second operand 6 states and 505 transitions. [2025-03-17 19:39:29,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 245 transitions, 1017 flow [2025-03-17 19:39:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 245 transitions, 1007 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:29,170 INFO L231 Difference]: Finished difference. Result has 152 places, 136 transitions, 415 flow [2025-03-17 19:39:29,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=152, PETRI_TRANSITIONS=136} [2025-03-17 19:39:29,170 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 29 predicate places. [2025-03-17 19:39:29,171 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 415 flow [2025-03-17 19:39:29,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:29,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:29,171 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:29,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:39:29,171 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:29,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 547310519, now seen corresponding path program 1 times [2025-03-17 19:39:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:29,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782023334] [2025-03-17 19:39:29,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:29,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:39:29,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:39:29,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:29,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782023334] [2025-03-17 19:39:29,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782023334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:29,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:29,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79944836] [2025-03-17 19:39:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:29,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:29,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:29,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:29,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2025-03-17 19:39:29,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:29,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:29,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2025-03-17 19:39:29,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:31,659 INFO L124 PetriNetUnfolderBase]: 17480/33347 cut-off events. [2025-03-17 19:39:31,660 INFO L125 PetriNetUnfolderBase]: For 2864/2864 co-relation queries the response was YES. [2025-03-17 19:39:31,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62107 conditions, 33347 events. 17480/33347 cut-off events. For 2864/2864 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 311575 event pairs, 1044 based on Foata normal form. 361/31019 useless extension candidates. Maximal degree in co-relation 62010. Up to 23352 conditions per place. [2025-03-17 19:39:32,084 INFO L140 encePairwiseOnDemand]: 149/154 looper letters, 150 selfloop transitions, 6 changer transitions 0/208 dead transitions. [2025-03-17 19:39:32,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 208 transitions, 869 flow [2025-03-17 19:39:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2025-03-17 19:39:32,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2025-03-17 19:39:32,086 INFO L175 Difference]: Start difference. First operand has 152 places, 136 transitions, 415 flow. Second operand 4 states and 358 transitions. [2025-03-17 19:39:32,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 208 transitions, 869 flow [2025-03-17 19:39:32,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 208 transitions, 853 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:39:32,104 INFO L231 Difference]: Finished difference. Result has 150 places, 136 transitions, 415 flow [2025-03-17 19:39:32,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2025-03-17 19:39:32,104 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 27 predicate places. [2025-03-17 19:39:32,105 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 415 flow [2025-03-17 19:39:32,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:32,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:32,105 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:32,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:39:32,105 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:32,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1597231247, now seen corresponding path program 1 times [2025-03-17 19:39:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15608907] [2025-03-17 19:39:32,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:32,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:39:32,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:39:32,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:32,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15608907] [2025-03-17 19:39:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15608907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572028495] [2025-03-17 19:39:32,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:32,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:32,295 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) [2025-03-17 19:39:32,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:39:32,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:39:32,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:39:32,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:32,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:32,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:32,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:32,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572028495] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:32,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:32,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74563847] [2025-03-17 19:39:32,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:32,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:32,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:32,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:32,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:32,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 415 flow. Second operand has 23 states, 23 states have (on average 56.43478260869565) internal successors, (1298), 23 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:32,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:32,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:35,073 INFO L124 PetriNetUnfolderBase]: 17179/36363 cut-off events. [2025-03-17 19:39:35,073 INFO L125 PetriNetUnfolderBase]: For 3249/3249 co-relation queries the response was YES. [2025-03-17 19:39:35,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63720 conditions, 36363 events. 17179/36363 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 365293 event pairs, 15876 based on Foata normal form. 3/32697 useless extension candidates. Maximal degree in co-relation 63589. Up to 25621 conditions per place. [2025-03-17 19:39:35,367 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 67 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2025-03-17 19:39:35,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 142 transitions, 645 flow [2025-03-17 19:39:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1244 transitions. [2025-03-17 19:39:35,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3846629560915275 [2025-03-17 19:39:35,370 INFO L175 Difference]: Start difference. First operand has 150 places, 136 transitions, 415 flow. Second operand 21 states and 1244 transitions. [2025-03-17 19:39:35,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 142 transitions, 645 flow [2025-03-17 19:39:35,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 142 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:35,374 INFO L231 Difference]: Finished difference. Result has 171 places, 142 transitions, 518 flow [2025-03-17 19:39:35,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=518, PETRI_PLACES=171, PETRI_TRANSITIONS=142} [2025-03-17 19:39:35,374 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 48 predicate places. [2025-03-17 19:39:35,374 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 142 transitions, 518 flow [2025-03-17 19:39:35,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.43478260869565) internal successors, (1298), 23 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:35,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:35,375 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:35,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:35,575 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,SelfDestructingSolverStorable16 [2025-03-17 19:39:35,576 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:35,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1878587573, now seen corresponding path program 2 times [2025-03-17 19:39:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:35,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771451022] [2025-03-17 19:39:35,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:35,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:35,588 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-17 19:39:35,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-03-17 19:39:35,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:35,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:39:36,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771451022] [2025-03-17 19:39:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771451022] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:36,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:36,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186938566] [2025-03-17 19:39:36,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:36,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:39:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:36,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:39:36,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:39:36,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2025-03-17 19:39:36,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 142 transitions, 518 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:36,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:36,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2025-03-17 19:39:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:39,611 INFO L124 PetriNetUnfolderBase]: 21232/43249 cut-off events. [2025-03-17 19:39:39,611 INFO L125 PetriNetUnfolderBase]: For 2603/2603 co-relation queries the response was YES. [2025-03-17 19:39:39,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77323 conditions, 43249 events. 21232/43249 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 439106 event pairs, 2820 based on Foata normal form. 544/39997 useless extension candidates. Maximal degree in co-relation 77163. Up to 23250 conditions per place. [2025-03-17 19:39:39,925 INFO L140 encePairwiseOnDemand]: 146/154 looper letters, 238 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2025-03-17 19:39:39,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 301 transitions, 1404 flow [2025-03-17 19:39:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2025-03-17 19:39:39,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.604978354978355 [2025-03-17 19:39:39,927 INFO L175 Difference]: Start difference. First operand has 171 places, 142 transitions, 518 flow. Second operand 6 states and 559 transitions. [2025-03-17 19:39:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 301 transitions, 1404 flow [2025-03-17 19:39:39,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 301 transitions, 1361 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-03-17 19:39:39,932 INFO L231 Difference]: Finished difference. Result has 167 places, 154 transitions, 558 flow [2025-03-17 19:39:39,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=167, PETRI_TRANSITIONS=154} [2025-03-17 19:39:39,933 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, 44 predicate places. [2025-03-17 19:39:39,933 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 154 transitions, 558 flow [2025-03-17 19:39:39,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:39,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:39,933 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:39:39,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:39:39,933 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:39,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2116033061, now seen corresponding path program 1 times [2025-03-17 19:39:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033321603] [2025-03-17 19:39:39,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:39,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-17 19:39:39,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-17 19:39:39,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:39,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:39,960 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:39,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-17 19:39:39,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-17 19:39:39,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:39,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:39,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:39,988 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:39,988 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-03-17 19:39:39,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2025-03-17 19:39:39,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2025-03-17 19:39:39,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:39:39,989 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:39:39,990 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:39,990 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:39:40,165 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:39:40,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 199 transitions, 425 flow [2025-03-17 19:39:40,194 INFO L124 PetriNetUnfolderBase]: 86/394 cut-off events. [2025-03-17 19:39:40,194 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:39:40,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 394 events. 86/394 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1905 event pairs, 1 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 274. Up to 16 conditions per place. [2025-03-17 19:39:40,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 199 transitions, 425 flow [2025-03-17 19:39:40,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 199 transitions, 425 flow [2025-03-17 19:39:40,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:40,203 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;@259f0c8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:40,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-03-17 19:39:40,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:40,205 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:40,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:40,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:40,205 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:40,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2025-03-17 19:39:40,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash 993503, now seen corresponding path program 1 times [2025-03-17 19:39:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155304046] [2025-03-17 19:39:40,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:40,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:40,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:40,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:40,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155304046] [2025-03-17 19:39:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155304046] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:40,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438564857] [2025-03-17 19:39:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:40,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:40,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:40,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:40,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 199 [2025-03-17 19:39:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 199 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 199 [2025-03-17 19:39:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand