./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/weaver/popl20-simple-array-sum.wvr.c -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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:43:40,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:43:41,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:43:41,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:43:41,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:43:41,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:43:41,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:43:41,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:43:41,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:43:41,030 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:43:41,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:43:41,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:43:41,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:43:41,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:43:41,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:43:41,033 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:43:41,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:41,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:43:41,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:43:41,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:43:41,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:43:41,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:43:41,035 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 -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2025-03-09 06:43:41,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:43:41,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:43:41,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:43:41,285 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:43:41,285 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:43:41,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2025-03-09 06:43:42,425 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f30d46f/23185eacdf3a4a979bcac7a4723d3d10/FLAG56614bc14 [2025-03-09 06:43:42,680 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:43:42,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2025-03-09 06:43:42,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f30d46f/23185eacdf3a4a979bcac7a4723d3d10/FLAG56614bc14 [2025-03-09 06:43:43,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f30d46f/23185eacdf3a4a979bcac7a4723d3d10 [2025-03-09 06:43:43,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:43:43,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:43:43,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:43,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:43:43,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:43:43,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc96460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43, skipping insertion in model container [2025-03-09 06:43:43,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:43:43,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:43,157 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:43:43,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:43,190 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:43:43,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43 WrapperNode [2025-03-09 06:43:43,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:43,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:43,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:43:43,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:43:43,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,217 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 109 [2025-03-09 06:43:43,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:43,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:43:43,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:43:43,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:43:43,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,236 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-09 06:43:43,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,241 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:43:43,251 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:43:43,251 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:43:43,251 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:43:43,251 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (1/1) ... [2025-03-09 06:43:43,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:43,275 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) [2025-03-09 06:43:43,277 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 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:43:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:43:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:43:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:43:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:43:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:43:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:43:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:43:43,293 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:43:43,377 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:43:43,378 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:43:43,623 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:43:43,624 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:43:43,751 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:43:43,751 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:43:43,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:43 BoogieIcfgContainer [2025-03-09 06:43:43,751 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:43:43,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:43:43,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:43:43,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:43:43,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:43:43" (1/3) ... [2025-03-09 06:43:43,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2538e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:43, skipping insertion in model container [2025-03-09 06:43:43,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:43" (2/3) ... [2025-03-09 06:43:43,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2538e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:43, skipping insertion in model container [2025-03-09 06:43:43,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:43" (3/3) ... [2025-03-09 06:43:43,760 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2025-03-09 06:43:43,771 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:43:43,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2025-03-09 06:43:43,773 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:43:43,822 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:43:43,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2025-03-09 06:43:43,877 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2025-03-09 06:43:43,879 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:43:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2025-03-09 06:43:43,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2025-03-09 06:43:43,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2025-03-09 06:43:43,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:43:43,906 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;@38aa7141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:43:43,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-03-09 06:43:43,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:43:43,909 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:43:43,909 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:43:43,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:43,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:43:43,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:43,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 433947, now seen corresponding path program 1 times [2025-03-09 06:43:43,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312268165] [2025-03-09 06:43:43,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:43,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:43:43,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:43:43,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:43,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312268165] [2025-03-09 06:43:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312268165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:44,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:44,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:44,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005214224] [2025-03-09 06:43:44,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:44,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:44,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:44,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:44,140 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:44,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-03-09 06:43:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:44,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:44,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:44,419 INFO L124 PetriNetUnfolderBase]: 1153/2149 cut-off events. [2025-03-09 06:43:44,420 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-03-09 06:43:44,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 2149 events. 1153/2149 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12812 event pairs, 880 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 3519. Up to 1594 conditions per place. [2025-03-09 06:43:44,439 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 35 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2025-03-09 06:43:44,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 219 flow [2025-03-09 06:43:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-03-09 06:43:44,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2025-03-09 06:43:44,454 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 130 transitions. [2025-03-09 06:43:44,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 219 flow [2025-03-09 06:43:44,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 210 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:44,463 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2025-03-09 06:43:44,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2025-03-09 06:43:44,468 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2025-03-09 06:43:44,468 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2025-03-09 06:43:44,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-03-09 06:43:44,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:44,468 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:43:44,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:43:44,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:44,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 43176983, now seen corresponding path program 1 times [2025-03-09 06:43:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402363809] [2025-03-09 06:43:44,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:44,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:44,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:44,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:44,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:44,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:44,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402363809] [2025-03-09 06:43:44,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402363809] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:44,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806379466] [2025-03-09 06:43:44,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:44,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:44,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:44,620 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) [2025-03-09 06:43:44,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:43:44,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:44,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:44,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:44,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:44,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:44,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:44,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806379466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:43:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410248971] [2025-03-09 06:43:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:44,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:43:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:44,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:43:44,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:43:44,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:44,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2025-03-09 06:43:44,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:44,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:44,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:44,951 INFO L124 PetriNetUnfolderBase]: 1153/2147 cut-off events. [2025-03-09 06:43:44,951 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-09 06:43:44,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 2147 events. 1153/2147 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12801 event pairs, 880 based on Foata normal form. 2/1930 useless extension candidates. Maximal degree in co-relation 3786. Up to 1584 conditions per place. [2025-03-09 06:43:44,965 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 28 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2025-03-09 06:43:44,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 246 flow [2025-03-09 06:43:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2025-03-09 06:43:44,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2025-03-09 06:43:44,968 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 168 transitions. [2025-03-09 06:43:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 246 flow [2025-03-09 06:43:44,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:43:44,970 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2025-03-09 06:43:44,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2025-03-09 06:43:44,972 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2025-03-09 06:43:44,972 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2025-03-09 06:43:44,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2025-03-09 06:43:44,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:44,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:43:44,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:43:45,175 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 [2025-03-09 06:43:45,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:45,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1338486837, now seen corresponding path program 1 times [2025-03-09 06:43:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964987495] [2025-03-09 06:43:45,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:45,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:45,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:45,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:45,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964987495] [2025-03-09 06:43:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964987495] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196954894] [2025-03-09 06:43:45,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:45,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:45,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:45,249 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) [2025-03-09 06:43:45,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:43:45,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:45,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:45,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:45,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:45,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:45,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:45,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196954894] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:45,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:43:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617309270] [2025-03-09 06:43:45,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:45,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:43:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:45,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:43:45,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:43:45,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:45,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2025-03-09 06:43:45,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:45,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:45,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:45,656 INFO L124 PetriNetUnfolderBase]: 1159/2171 cut-off events. [2025-03-09 06:43:45,656 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-03-09 06:43:45,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 2171 events. 1159/2171 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13023 event pairs, 880 based on Foata normal form. 6/1957 useless extension candidates. Maximal degree in co-relation 3788. Up to 1595 conditions per place. [2025-03-09 06:43:45,667 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 33 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2025-03-09 06:43:45,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 420 flow [2025-03-09 06:43:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:43:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:43:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2025-03-09 06:43:45,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46440677966101696 [2025-03-09 06:43:45,669 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 274 transitions. [2025-03-09 06:43:45,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 420 flow [2025-03-09 06:43:45,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 362 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:45,671 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2025-03-09 06:43:45,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2025-03-09 06:43:45,672 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2025-03-09 06:43:45,673 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2025-03-09 06:43:45,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2025-03-09 06:43:45,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:45,673 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:45,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:45,877 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,SelfDestructingSolverStorable2 [2025-03-09 06:43:45,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:45,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2024022239, now seen corresponding path program 1 times [2025-03-09 06:43:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854891146] [2025-03-09 06:43:45,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:45,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:45,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:45,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:45,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:45,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854891146] [2025-03-09 06:43:45,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854891146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:45,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:45,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:45,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456149380] [2025-03-09 06:43:45,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:45,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:45,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:45,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:45,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:45,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-03-09 06:43:45,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-03-09 06:43:45,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:45,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-03-09 06:43:45,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:46,292 INFO L124 PetriNetUnfolderBase]: 2267/3935 cut-off events. [2025-03-09 06:43:46,292 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2025-03-09 06:43:46,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 3935 events. 2267/3935 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 24135 event pairs, 1240 based on Foata normal form. 86/3695 useless extension candidates. Maximal degree in co-relation 7249. Up to 2283 conditions per place. [2025-03-09 06:43:46,307 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 92 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-03-09 06:43:46,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 604 flow [2025-03-09 06:43:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2025-03-09 06:43:46,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7033898305084746 [2025-03-09 06:43:46,308 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 166 transitions. [2025-03-09 06:43:46,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 604 flow [2025-03-09 06:43:46,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 114 transitions, 580 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:46,314 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2025-03-09 06:43:46,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2025-03-09 06:43:46,315 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-03-09 06:43:46,315 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2025-03-09 06:43:46,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-03-09 06:43:46,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:46,315 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:46,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:43:46,315 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:46,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:46,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1321846415, now seen corresponding path program 1 times [2025-03-09 06:43:46,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:46,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068229781] [2025-03-09 06:43:46,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:46,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:43:46,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:43:46,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:46,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:43:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068229781] [2025-03-09 06:43:46,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068229781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:46,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:46,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:43:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750916] [2025-03-09 06:43:46,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:46,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:46,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:46,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:46,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:46,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2025-03-09 06:43:46,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:46,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:46,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:46,912 INFO L124 PetriNetUnfolderBase]: 2933/5491 cut-off events. [2025-03-09 06:43:46,913 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2025-03-09 06:43:46,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11081 conditions, 5491 events. 2933/5491 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 37062 event pairs, 2120 based on Foata normal form. 87/5127 useless extension candidates. Maximal degree in co-relation 11014. Up to 3150 conditions per place. [2025-03-09 06:43:46,949 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 88 selfloop transitions, 12 changer transitions 0/119 dead transitions. [2025-03-09 06:43:46,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 633 flow [2025-03-09 06:43:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2025-03-09 06:43:46,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.635593220338983 [2025-03-09 06:43:46,953 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 6 states and 225 transitions. [2025-03-09 06:43:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 633 flow [2025-03-09 06:43:46,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 119 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:46,960 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 385 flow [2025-03-09 06:43:46,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2025-03-09 06:43:46,961 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2025-03-09 06:43:46,962 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 385 flow [2025-03-09 06:43:46,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2025-03-09 06:43:46,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:46,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:46,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:43:46,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:46,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 564991621, now seen corresponding path program 1 times [2025-03-09 06:43:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:46,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272198874] [2025-03-09 06:43:46,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:46,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:46,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:43:46,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:43:46,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:46,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272198874] [2025-03-09 06:43:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272198874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134992489] [2025-03-09 06:43:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:47,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:47,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:47,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:47,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-09 06:43:47,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-03-09 06:43:47,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:47,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-09 06:43:47,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:47,691 INFO L124 PetriNetUnfolderBase]: 5815/9700 cut-off events. [2025-03-09 06:43:47,692 INFO L125 PetriNetUnfolderBase]: For 4967/5295 co-relation queries the response was YES. [2025-03-09 06:43:47,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21723 conditions, 9700 events. 5815/9700 cut-off events. For 4967/5295 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 61920 event pairs, 2978 based on Foata normal form. 166/9566 useless extension candidates. Maximal degree in co-relation 21652. Up to 5345 conditions per place. [2025-03-09 06:43:47,733 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 107 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2025-03-09 06:43:47,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 769 flow [2025-03-09 06:43:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2025-03-09 06:43:47,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6822033898305084 [2025-03-09 06:43:47,735 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 385 flow. Second operand 4 states and 161 transitions. [2025-03-09 06:43:47,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 769 flow [2025-03-09 06:43:47,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 751 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:47,742 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 396 flow [2025-03-09 06:43:47,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2025-03-09 06:43:47,745 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2025-03-09 06:43:47,745 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 396 flow [2025-03-09 06:43:47,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2025-03-09 06:43:47,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:47,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:47,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:43:47,746 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:47,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:47,746 INFO L85 PathProgramCache]: Analyzing trace with hash 501336780, now seen corresponding path program 1 times [2025-03-09 06:43:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:47,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046748701] [2025-03-09 06:43:47,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:47,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:47,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:43:47,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:43:47,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:47,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046748701] [2025-03-09 06:43:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046748701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:47,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:47,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155524870] [2025-03-09 06:43:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:47,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:47,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:47,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:47,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:47,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-09 06:43:47,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:47,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:47,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:48,301 INFO L124 PetriNetUnfolderBase]: 3900/7285 cut-off events. [2025-03-09 06:43:48,301 INFO L125 PetriNetUnfolderBase]: For 4490/4866 co-relation queries the response was YES. [2025-03-09 06:43:48,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17037 conditions, 7285 events. 3900/7285 cut-off events. For 4490/4866 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 50565 event pairs, 817 based on Foata normal form. 194/7277 useless extension candidates. Maximal degree in co-relation 16965. Up to 4005 conditions per place. [2025-03-09 06:43:48,337 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 97 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2025-03-09 06:43:48,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 123 transitions, 754 flow [2025-03-09 06:43:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-09 06:43:48,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673728813559322 [2025-03-09 06:43:48,339 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 396 flow. Second operand 4 states and 159 transitions. [2025-03-09 06:43:48,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 123 transitions, 754 flow [2025-03-09 06:43:48,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:48,346 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 418 flow [2025-03-09 06:43:48,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2025-03-09 06:43:48,347 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2025-03-09 06:43:48,348 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 418 flow [2025-03-09 06:43:48,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-09 06:43:48,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:48,349 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:43:48,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:43:48,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:48,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1498568527, now seen corresponding path program 2 times [2025-03-09 06:43:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690166594] [2025-03-09 06:43:48,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:48,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:48,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:48,364 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:48,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690166594] [2025-03-09 06:43:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690166594] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674023964] [2025-03-09 06:43:48,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:48,401 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) [2025-03-09 06:43:48,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:43:48,443 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:48,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:48,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:48,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:48,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:43:48,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:48,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674023964] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:48,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:48,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:43:48,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042726173] [2025-03-09 06:43:48,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:48,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:48,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:48,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:48,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:48,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:49,022 INFO L124 PetriNetUnfolderBase]: 3454/6326 cut-off events. [2025-03-09 06:43:49,023 INFO L125 PetriNetUnfolderBase]: For 4138/4530 co-relation queries the response was YES. [2025-03-09 06:43:49,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15610 conditions, 6326 events. 3454/6326 cut-off events. For 4138/4530 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 41872 event pairs, 2703 based on Foata normal form. 116/6233 useless extension candidates. Maximal degree in co-relation 15540. Up to 4942 conditions per place. [2025-03-09 06:43:49,052 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 52 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2025-03-09 06:43:49,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 544 flow [2025-03-09 06:43:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-03-09 06:43:49,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-09 06:43:49,054 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 418 flow. Second operand 4 states and 118 transitions. [2025-03-09 06:43:49,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 544 flow [2025-03-09 06:43:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:43:49,059 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 440 flow [2025-03-09 06:43:49,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2025-03-09 06:43:49,060 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2025-03-09 06:43:49,060 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 440 flow [2025-03-09 06:43:49,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:49,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:49,060 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:49,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:49,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:49,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:49,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1531008594, now seen corresponding path program 1 times [2025-03-09 06:43:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:49,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239619084] [2025-03-09 06:43:49,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:49,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:43:49,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:43:49,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:49,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:43:49,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:49,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239619084] [2025-03-09 06:43:49,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239619084] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:49,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171675385] [2025-03-09 06:43:49,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:49,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:49,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:49,348 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) [2025-03-09 06:43:49,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:43:49,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:43:49,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:43:49,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:49,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:49,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:43:49,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:49,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:49,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171675385] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:49,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:49,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-09 06:43:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085607166] [2025-03-09 06:43:49,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:49,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:43:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:49,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:43:49,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:43:49,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2025-03-09 06:43:49,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 440 flow. Second operand has 19 states, 19 states have (on average 20.31578947368421) internal successors, (386), 19 states have internal predecessors, (386), 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) [2025-03-09 06:43:49,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:49,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2025-03-09 06:43:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:51,028 INFO L124 PetriNetUnfolderBase]: 6482/10763 cut-off events. [2025-03-09 06:43:51,028 INFO L125 PetriNetUnfolderBase]: For 6123/6736 co-relation queries the response was YES. [2025-03-09 06:43:51,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27225 conditions, 10763 events. 6482/10763 cut-off events. For 6123/6736 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 69548 event pairs, 1488 based on Foata normal form. 470/10900 useless extension candidates. Maximal degree in co-relation 27120. Up to 2016 conditions per place. [2025-03-09 06:43:51,075 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 228 selfloop transitions, 46 changer transitions 0/290 dead transitions. [2025-03-09 06:43:51,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 290 transitions, 1706 flow [2025-03-09 06:43:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:43:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:43:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 516 transitions. [2025-03-09 06:43:51,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.514456630109671 [2025-03-09 06:43:51,077 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 440 flow. Second operand 17 states and 516 transitions. [2025-03-09 06:43:51,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 290 transitions, 1706 flow [2025-03-09 06:43:51,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 290 transitions, 1674 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:43:51,093 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 645 flow [2025-03-09 06:43:51,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=645, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2025-03-09 06:43:51,094 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2025-03-09 06:43:51,094 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 645 flow [2025-03-09 06:43:51,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.31578947368421) internal successors, (386), 19 states have internal predecessors, (386), 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) [2025-03-09 06:43:51,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:51,094 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:51,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:43:51,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:51,295 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:51,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash 114835267, now seen corresponding path program 1 times [2025-03-09 06:43:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201700580] [2025-03-09 06:43:51,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:51,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:43:51,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:43:51,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:51,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:43:51,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201700580] [2025-03-09 06:43:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201700580] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611356194] [2025-03-09 06:43:51,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:51,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:51,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:51,435 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) [2025-03-09 06:43:51,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:43:51,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:43:51,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:43:51,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:51,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:51,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 06:43:51,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:43:51,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-09 06:43:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611356194] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:51,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-09 06:43:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816972351] [2025-03-09 06:43:51,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:43:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:51,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:43:51,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:43:51,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:51,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 645 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 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) [2025-03-09 06:43:51,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:51,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:52,701 INFO L124 PetriNetUnfolderBase]: 5632/10056 cut-off events. [2025-03-09 06:43:52,702 INFO L125 PetriNetUnfolderBase]: For 11832/12456 co-relation queries the response was YES. [2025-03-09 06:43:52,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26784 conditions, 10056 events. 5632/10056 cut-off events. For 11832/12456 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 69215 event pairs, 4519 based on Foata normal form. 156/9862 useless extension candidates. Maximal degree in co-relation 26693. Up to 4096 conditions per place. [2025-03-09 06:43:52,766 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 72 selfloop transitions, 31 changer transitions 0/121 dead transitions. [2025-03-09 06:43:52,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 870 flow [2025-03-09 06:43:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:43:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:43:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2025-03-09 06:43:52,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47303543913713403 [2025-03-09 06:43:52,767 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 645 flow. Second operand 11 states and 307 transitions. [2025-03-09 06:43:52,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 870 flow [2025-03-09 06:43:52,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 775 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-09 06:43:52,782 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 553 flow [2025-03-09 06:43:52,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2025-03-09 06:43:52,783 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2025-03-09 06:43:52,783 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 553 flow [2025-03-09 06:43:52,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 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) [2025-03-09 06:43:52,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:52,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:52,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:43:52,984 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 [2025-03-09 06:43:52,984 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:52,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1130651469, now seen corresponding path program 1 times [2025-03-09 06:43:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834788089] [2025-03-09 06:43:52,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:52,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:43:52,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:43:52,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:52,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:53,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834788089] [2025-03-09 06:43:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834788089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:53,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:43:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531031871] [2025-03-09 06:43:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:53,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:53,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:53,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:53,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:53,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:53,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:53,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:53,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:54,008 INFO L124 PetriNetUnfolderBase]: 8180/14871 cut-off events. [2025-03-09 06:43:54,009 INFO L125 PetriNetUnfolderBase]: For 10089/10897 co-relation queries the response was YES. [2025-03-09 06:43:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36814 conditions, 14871 events. 8180/14871 cut-off events. For 10089/10897 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 113313 event pairs, 2843 based on Foata normal form. 564/15230 useless extension candidates. Maximal degree in co-relation 36729. Up to 6984 conditions per place. [2025-03-09 06:43:54,077 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 165 selfloop transitions, 11 changer transitions 0/194 dead transitions. [2025-03-09 06:43:54,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 1333 flow [2025-03-09 06:43:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2025-03-09 06:43:54,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2025-03-09 06:43:54,079 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 553 flow. Second operand 6 states and 240 transitions. [2025-03-09 06:43:54,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 1333 flow [2025-03-09 06:43:54,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 194 transitions, 1259 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-03-09 06:43:54,096 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 564 flow [2025-03-09 06:43:54,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2025-03-09 06:43:54,096 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2025-03-09 06:43:54,096 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 564 flow [2025-03-09 06:43:54,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:54,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:54,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:54,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:43:54,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:54,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash 840295977, now seen corresponding path program 2 times [2025-03-09 06:43:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280701755] [2025-03-09 06:43:54,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:54,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:43:54,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:43:54,106 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:54,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280701755] [2025-03-09 06:43:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280701755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:54,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:43:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888566978] [2025-03-09 06:43:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:54,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:54,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:54,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:54,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:54,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:54,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:54,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:54,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:55,233 INFO L124 PetriNetUnfolderBase]: 12058/21040 cut-off events. [2025-03-09 06:43:55,233 INFO L125 PetriNetUnfolderBase]: For 24167/26023 co-relation queries the response was YES. [2025-03-09 06:43:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56006 conditions, 21040 events. 12058/21040 cut-off events. For 24167/26023 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 159833 event pairs, 4751 based on Foata normal form. 764/21202 useless extension candidates. Maximal degree in co-relation 55928. Up to 7572 conditions per place. [2025-03-09 06:43:55,341 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 167 selfloop transitions, 11 changer transitions 0/196 dead transitions. [2025-03-09 06:43:55,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 196 transitions, 1349 flow [2025-03-09 06:43:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2025-03-09 06:43:55,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581920903954802 [2025-03-09 06:43:55,342 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 564 flow. Second operand 6 states and 233 transitions. [2025-03-09 06:43:55,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 196 transitions, 1349 flow [2025-03-09 06:43:55,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 196 transitions, 1338 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:55,375 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 636 flow [2025-03-09 06:43:55,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2025-03-09 06:43:55,375 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2025-03-09 06:43:55,375 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 636 flow [2025-03-09 06:43:55,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:55,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:55,376 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:55,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:43:55,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:55,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2073415087, now seen corresponding path program 3 times [2025-03-09 06:43:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:55,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548817560] [2025-03-09 06:43:55,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:43:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:55,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:43:55,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:43:55,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:43:55,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:55,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548817560] [2025-03-09 06:43:55,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548817560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:55,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:43:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231205188] [2025-03-09 06:43:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:55,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:55,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:55,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:55,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:55,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:55,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:55,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:55,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:56,619 INFO L124 PetriNetUnfolderBase]: 12396/21978 cut-off events. [2025-03-09 06:43:56,620 INFO L125 PetriNetUnfolderBase]: For 39184/40784 co-relation queries the response was YES. [2025-03-09 06:43:56,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60392 conditions, 21978 events. 12396/21978 cut-off events. For 39184/40784 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 165846 event pairs, 2753 based on Foata normal form. 364/21856 useless extension candidates. Maximal degree in co-relation 60310. Up to 9791 conditions per place. [2025-03-09 06:43:56,748 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 159 selfloop transitions, 18 changer transitions 1/196 dead transitions. [2025-03-09 06:43:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 1394 flow [2025-03-09 06:43:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2025-03-09 06:43:56,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:43:56,749 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 636 flow. Second operand 6 states and 236 transitions. [2025-03-09 06:43:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 1394 flow [2025-03-09 06:43:56,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1373 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:56,790 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 701 flow [2025-03-09 06:43:56,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2025-03-09 06:43:56,791 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2025-03-09 06:43:56,791 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 701 flow [2025-03-09 06:43:56,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-03-09 06:43:56,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:56,791 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:56,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:43:56,791 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:56,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2006382462, now seen corresponding path program 1 times [2025-03-09 06:43:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096586244] [2025-03-09 06:43:56,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:56,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:43:56,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:43:56,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:56,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 06:43:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:56,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096586244] [2025-03-09 06:43:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096586244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:56,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:43:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900310585] [2025-03-09 06:43:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:56,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:56,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:56,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:56,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-09 06:43:56,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2025-03-09 06:43:56,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:56,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-09 06:43:56,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:58,247 INFO L124 PetriNetUnfolderBase]: 11972/20538 cut-off events. [2025-03-09 06:43:58,247 INFO L125 PetriNetUnfolderBase]: For 39028/40493 co-relation queries the response was YES. [2025-03-09 06:43:58,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58288 conditions, 20538 events. 11972/20538 cut-off events. For 39028/40493 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 145792 event pairs, 9526 based on Foata normal form. 162/20047 useless extension candidates. Maximal degree in co-relation 58204. Up to 16695 conditions per place. [2025-03-09 06:43:58,395 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 78 selfloop transitions, 8 changer transitions 29/133 dead transitions. [2025-03-09 06:43:58,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 1071 flow [2025-03-09 06:43:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2025-03-09 06:43:58,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2025-03-09 06:43:58,396 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 701 flow. Second operand 6 states and 207 transitions. [2025-03-09 06:43:58,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 1071 flow [2025-03-09 06:43:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 1015 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-09 06:43:58,452 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 646 flow [2025-03-09 06:43:58,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2025-03-09 06:43:58,452 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2025-03-09 06:43:58,453 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 646 flow [2025-03-09 06:43:58,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2025-03-09 06:43:58,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:58,453 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-03-09 06:43:58,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:43:58,453 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:58,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:58,453 INFO L85 PathProgramCache]: Analyzing trace with hash 257237447, now seen corresponding path program 2 times [2025-03-09 06:43:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:58,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41633230] [2025-03-09 06:43:58,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:58,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-09 06:43:58,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-09 06:43:58,462 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:58,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:43:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41633230] [2025-03-09 06:43:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41633230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582356201] [2025-03-09 06:43:58,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:58,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:58,492 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) [2025-03-09 06:43:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:43:58,534 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-09 06:43:58,542 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-09 06:43:58,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:58,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:58,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:43:58,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:43:58,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-09 06:43:58,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582356201] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:58,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:58,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:43:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452989044] [2025-03-09 06:43:58,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:58,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:58,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:58,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:58,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:43:58,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2025-03-09 06:43:58,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:58,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:43:58,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:59,519 INFO L124 PetriNetUnfolderBase]: 9834/17146 cut-off events. [2025-03-09 06:43:59,519 INFO L125 PetriNetUnfolderBase]: For 27781/29315 co-relation queries the response was YES. [2025-03-09 06:43:59,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47933 conditions, 17146 events. 9834/17146 cut-off events. For 27781/29315 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 123850 event pairs, 7765 based on Foata normal form. 122/16677 useless extension candidates. Maximal degree in co-relation 47852. Up to 13884 conditions per place. [2025-03-09 06:43:59,634 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 57 selfloop transitions, 28 changer transitions 0/103 dead transitions. [2025-03-09 06:43:59,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 806 flow [2025-03-09 06:43:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:43:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:43:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-03-09 06:43:59,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46779661016949153 [2025-03-09 06:43:59,635 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 646 flow. Second operand 5 states and 138 transitions. [2025-03-09 06:43:59,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 806 flow [2025-03-09 06:43:59,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 744 flow, removed 13 selfloop flow, removed 11 redundant places. [2025-03-09 06:43:59,683 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 630 flow [2025-03-09 06:43:59,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2025-03-09 06:43:59,683 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2025-03-09 06:43:59,683 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 630 flow [2025-03-09 06:43:59,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2025-03-09 06:43:59,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:59,683 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:59,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:43:59,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 06:43:59,884 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:43:59,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1917683420, now seen corresponding path program 1 times [2025-03-09 06:43:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757425506] [2025-03-09 06:43:59,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:59,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 06:43:59,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 06:43:59,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:59,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:43:59,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757425506] [2025-03-09 06:43:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757425506] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767055552] [2025-03-09 06:43:59,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:59,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:59,941 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) [2025-03-09 06:43:59,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:43:59,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 06:43:59,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 06:44:00,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:00,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:00,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:00,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:00,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767055552] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:44:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988835653] [2025-03-09 06:44:00,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:00,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:44:00,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:00,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:44:00,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:44:00,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-03-09 06:44:00,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 630 flow. Second operand has 12 states, 12 states have (on average 25.166666666666668) internal successors, (302), 12 states have internal predecessors, (302), 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) [2025-03-09 06:44:00,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:00,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-03-09 06:44:00,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:01,791 INFO L124 PetriNetUnfolderBase]: 16941/28941 cut-off events. [2025-03-09 06:44:01,791 INFO L125 PetriNetUnfolderBase]: For 37104/38592 co-relation queries the response was YES. [2025-03-09 06:44:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77882 conditions, 28941 events. 16941/28941 cut-off events. For 37104/38592 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 212600 event pairs, 4208 based on Foata normal form. 1013/29462 useless extension candidates. Maximal degree in co-relation 59546. Up to 9738 conditions per place. [2025-03-09 06:44:02,008 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 377 selfloop transitions, 18 changer transitions 0/412 dead transitions. [2025-03-09 06:44:02,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 412 transitions, 3382 flow [2025-03-09 06:44:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 418 transitions. [2025-03-09 06:44:02,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7084745762711865 [2025-03-09 06:44:02,009 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 630 flow. Second operand 10 states and 418 transitions. [2025-03-09 06:44:02,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 412 transitions, 3382 flow [2025-03-09 06:44:02,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 412 transitions, 3331 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:02,053 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 675 flow [2025-03-09 06:44:02,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2025-03-09 06:44:02,054 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2025-03-09 06:44:02,054 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 675 flow [2025-03-09 06:44:02,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.166666666666668) internal successors, (302), 12 states have internal predecessors, (302), 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) [2025-03-09 06:44:02,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:02,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:02,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:44:02,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:02,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:02,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1293180065, now seen corresponding path program 1 times [2025-03-09 06:44:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110694447] [2025-03-09 06:44:02,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:02,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:44:02,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:44:02,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:02,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110694447] [2025-03-09 06:44:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110694447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909228760] [2025-03-09 06:44:02,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:02,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:02,313 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) [2025-03-09 06:44:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:44:02,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:44:02,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:44:02,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:02,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:02,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:44:02,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:02,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909228760] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:02,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-09 06:44:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877196564] [2025-03-09 06:44:02,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:02,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:44:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:02,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:44:02,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:44:02,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2025-03-09 06:44:02,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 675 flow. Second operand has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 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) [2025-03-09 06:44:02,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:02,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2025-03-09 06:44:02,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:04,703 INFO L124 PetriNetUnfolderBase]: 19136/31339 cut-off events. [2025-03-09 06:44:04,703 INFO L125 PetriNetUnfolderBase]: For 56015/56395 co-relation queries the response was YES. [2025-03-09 06:44:05,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91728 conditions, 31339 events. 19136/31339 cut-off events. For 56015/56395 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 219861 event pairs, 3100 based on Foata normal form. 557/30852 useless extension candidates. Maximal degree in co-relation 82681. Up to 12402 conditions per place. [2025-03-09 06:44:05,138 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 182 selfloop transitions, 35 changer transitions 68/298 dead transitions. [2025-03-09 06:44:05,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 298 transitions, 2290 flow [2025-03-09 06:44:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:44:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:44:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 455 transitions. [2025-03-09 06:44:05,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45363908275174475 [2025-03-09 06:44:05,140 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 675 flow. Second operand 17 states and 455 transitions. [2025-03-09 06:44:05,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 298 transitions, 2290 flow [2025-03-09 06:44:05,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 298 transitions, 2204 flow, removed 18 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:05,252 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 662 flow [2025-03-09 06:44:05,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=662, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2025-03-09 06:44:05,252 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2025-03-09 06:44:05,252 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 662 flow [2025-03-09 06:44:05,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 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) [2025-03-09 06:44:05,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:05,253 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:05,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:05,453 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 [2025-03-09 06:44:05,453 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:05,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 624552571, now seen corresponding path program 1 times [2025-03-09 06:44:05,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:05,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794887932] [2025-03-09 06:44:05,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:05,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:05,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:44:05,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:44:05,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:05,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794887932] [2025-03-09 06:44:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794887932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:05,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978755983] [2025-03-09 06:44:05,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:05,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:05,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:05,524 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:05,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:44:05,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:44:05,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:44:05,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:05,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:05,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:05,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:05,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978755983] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:05,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:44:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030615852] [2025-03-09 06:44:05,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:05,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:44:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:05,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:44:05,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:44:05,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-09 06:44:05,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 25.166666666666668) internal successors, (302), 12 states have internal predecessors, (302), 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) [2025-03-09 06:44:05,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:05,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-09 06:44:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:09,639 INFO L124 PetriNetUnfolderBase]: 30065/48607 cut-off events. [2025-03-09 06:44:09,639 INFO L125 PetriNetUnfolderBase]: For 80393/81315 co-relation queries the response was YES. [2025-03-09 06:44:09,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144124 conditions, 48607 events. 30065/48607 cut-off events. For 80393/81315 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 354314 event pairs, 6371 based on Foata normal form. 1362/49460 useless extension candidates. Maximal degree in co-relation 144008. Up to 14917 conditions per place. [2025-03-09 06:44:09,971 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 301 selfloop transitions, 19 changer transitions 0/334 dead transitions. [2025-03-09 06:44:09,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 334 transitions, 2480 flow [2025-03-09 06:44:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2025-03-09 06:44:09,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6661016949152543 [2025-03-09 06:44:09,973 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 662 flow. Second operand 10 states and 393 transitions. [2025-03-09 06:44:09,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 334 transitions, 2480 flow [2025-03-09 06:44:10,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 334 transitions, 2411 flow, removed 11 selfloop flow, removed 11 redundant places. [2025-03-09 06:44:10,091 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 703 flow [2025-03-09 06:44:10,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=703, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2025-03-09 06:44:10,091 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2025-03-09 06:44:10,091 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 703 flow [2025-03-09 06:44:10,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.166666666666668) internal successors, (302), 12 states have internal predecessors, (302), 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) [2025-03-09 06:44:10,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:10,092 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:10,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:10,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:44:10,296 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:10,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash -338796076, now seen corresponding path program 1 times [2025-03-09 06:44:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573912284] [2025-03-09 06:44:10,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:10,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 06:44:10,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 06:44:10,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:10,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-09 06:44:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573912284] [2025-03-09 06:44:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573912284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607771802] [2025-03-09 06:44:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:10,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:10,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:10,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:10,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-03-09 06:44:10,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2025-03-09 06:44:10,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:10,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-03-09 06:44:10,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:13,559 INFO L124 PetriNetUnfolderBase]: 27186/43134 cut-off events. [2025-03-09 06:44:13,559 INFO L125 PetriNetUnfolderBase]: For 86419/87887 co-relation queries the response was YES. [2025-03-09 06:44:13,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131766 conditions, 43134 events. 27186/43134 cut-off events. For 86419/87887 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 306256 event pairs, 12241 based on Foata normal form. 1124/43748 useless extension candidates. Maximal degree in co-relation 131612. Up to 20378 conditions per place. [2025-03-09 06:44:13,938 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 150 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2025-03-09 06:44:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 175 transitions, 1383 flow [2025-03-09 06:44:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2025-03-09 06:44:13,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2025-03-09 06:44:13,939 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 703 flow. Second operand 4 states and 160 transitions. [2025-03-09 06:44:13,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 175 transitions, 1383 flow [2025-03-09 06:44:14,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1354 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:14,061 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 716 flow [2025-03-09 06:44:14,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=716, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2025-03-09 06:44:14,062 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2025-03-09 06:44:14,062 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 716 flow [2025-03-09 06:44:14,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2025-03-09 06:44:14,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:14,062 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:14,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:44:14,062 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:14,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1358380524, now seen corresponding path program 2 times [2025-03-09 06:44:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63772894] [2025-03-09 06:44:14,063 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:14,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:44:14,073 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 42 statements. [2025-03-09 06:44:14,073 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:14,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-09 06:44:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63772894] [2025-03-09 06:44:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63772894] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492922898] [2025-03-09 06:44:14,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:14,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:14,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:14,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:44:14,147 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 06:44:14,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 42 statements. [2025-03-09 06:44:14,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:14,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:14,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:14,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-09 06:44:14,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-09 06:44:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492922898] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:14,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:44:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012526930] [2025-03-09 06:44:14,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:14,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:14,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:14,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:14,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-09 06:44:14,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2025-03-09 06:44:14,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:14,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-09 06:44:14,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:17,822 INFO L124 PetriNetUnfolderBase]: 31456/48304 cut-off events. [2025-03-09 06:44:17,823 INFO L125 PetriNetUnfolderBase]: For 99239/101183 co-relation queries the response was YES. [2025-03-09 06:44:18,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148378 conditions, 48304 events. 31456/48304 cut-off events. For 99239/101183 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 340158 event pairs, 7823 based on Foata normal form. 510/48069 useless extension candidates. Maximal degree in co-relation 148221. Up to 19454 conditions per place. [2025-03-09 06:44:18,217 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 164 selfloop transitions, 14 changer transitions 3/199 dead transitions. [2025-03-09 06:44:18,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 1716 flow [2025-03-09 06:44:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:44:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:44:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2025-03-09 06:44:18,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6101694915254238 [2025-03-09 06:44:18,218 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 716 flow. Second operand 5 states and 180 transitions. [2025-03-09 06:44:18,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 1716 flow [2025-03-09 06:44:18,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 199 transitions, 1688 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:18,506 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 722 flow [2025-03-09 06:44:18,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2025-03-09 06:44:18,507 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2025-03-09 06:44:18,507 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 722 flow [2025-03-09 06:44:18,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2025-03-09 06:44:18,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:18,507 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:18,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:18,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:18,708 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:18,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726031, now seen corresponding path program 1 times [2025-03-09 06:44:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760721933] [2025-03-09 06:44:18,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:18,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 06:44:18,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 06:44:18,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:18,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-09 06:44:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760721933] [2025-03-09 06:44:18,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760721933] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262443829] [2025-03-09 06:44:18,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:18,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:18,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:18,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:18,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:44:18,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 06:44:18,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 06:44:18,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:18,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:18,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:44:18,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:18,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262443829] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:19,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:19,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-09 06:44:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401592109] [2025-03-09 06:44:19,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:19,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 06:44:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:19,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 06:44:19,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-03-09 06:44:19,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2025-03-09 06:44:19,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 722 flow. Second operand has 19 states, 19 states have (on average 21.473684210526315) internal successors, (408), 19 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:19,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:19,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2025-03-09 06:44:19,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:26,588 INFO L124 PetriNetUnfolderBase]: 61531/94085 cut-off events. [2025-03-09 06:44:26,588 INFO L125 PetriNetUnfolderBase]: For 267153/268395 co-relation queries the response was YES. [2025-03-09 06:44:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296460 conditions, 94085 events. 61531/94085 cut-off events. For 267153/268395 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 692630 event pairs, 4661 based on Foata normal form. 3012/97082 useless extension candidates. Maximal degree in co-relation 296305. Up to 15788 conditions per place. [2025-03-09 06:44:27,184 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 737 selfloop transitions, 62 changer transitions 24/833 dead transitions. [2025-03-09 06:44:27,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 833 transitions, 6910 flow [2025-03-09 06:44:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 06:44:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 06:44:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 921 transitions. [2025-03-09 06:44:27,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5575060532687651 [2025-03-09 06:44:27,185 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 722 flow. Second operand 28 states and 921 transitions. [2025-03-09 06:44:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 833 transitions, 6910 flow [2025-03-09 06:44:27,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 833 transitions, 6449 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:27,658 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1274 flow [2025-03-09 06:44:27,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1274, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2025-03-09 06:44:27,658 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 104 predicate places. [2025-03-09 06:44:27,658 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1274 flow [2025-03-09 06:44:27,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.473684210526315) internal successors, (408), 19 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:44:27,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:27,659 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:27,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 06:44:27,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-09 06:44:27,859 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-03-09 06:44:27,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2006255372, now seen corresponding path program 1 times [2025-03-09 06:44:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:27,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188278437] [2025-03-09 06:44:27,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:27,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:27,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-09 06:44:27,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-09 06:44:27,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:27,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188278437] [2025-03-09 06:44:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188278437] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:27,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300921858] [2025-03-09 06:44:27,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:27,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:27,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:27,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:44:27,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:44:27,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-09 06:44:28,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-09 06:44:28,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:28,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:28,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:44:28,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:28,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300921858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2025-03-09 06:44:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391768291] [2025-03-09 06:44:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:28,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:44:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:28,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:44:28,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:44:28,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2025-03-09 06:44:28,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1274 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 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) [2025-03-09 06:44:28,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:28,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2025-03-09 06:44:28,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand