./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:32:58,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:32:58,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:32:58,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:32:58,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:32:58,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:32:58,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:32:58,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:32:58,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:32:58,895 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:32:58,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:32:58,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:32:58,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:32:58,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:32:58,897 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:32:58,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:32:58,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:32:58,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:32:58,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:32:58,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:32:58,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:32:58,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:32:58,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:32:58,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:32:58,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:32:58,912 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:32:58,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:32:58,913 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:32:58,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:32:58,913 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:32:58,914 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:32:58,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:32:58,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:32:58,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:32:58,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:58,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:32:58,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:32:58,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:32:58,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:32:58,917 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-11-17 07:32:59,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:32:59,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:32:59,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:32:59,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:32:59,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:32:59,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-17 07:33:00,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:33:00,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:33:00,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-17 07:33:00,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ed73403/c66db6fb91694938880d36aec7494797/FLAGa22ed1131 [2024-11-17 07:33:00,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ed73403/c66db6fb91694938880d36aec7494797 [2024-11-17 07:33:00,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:33:00,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:33:00,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:33:00,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:33:00,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:33:00,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:33:00" (1/1) ... [2024-11-17 07:33:00,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e925fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:00, skipping insertion in model container [2024-11-17 07:33:00,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:33:00" (1/1) ... [2024-11-17 07:33:00,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:33:01,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:33:01,056 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:33:01,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:33:01,184 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:33:01,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01 WrapperNode [2024-11-17 07:33:01,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:33:01,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:33:01,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:33:01,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:33:01,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,269 INFO L138 Inliner]: procedures = 274, calls = 854, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1011 [2024-11-17 07:33:01,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:33:01,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:33:01,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:33:01,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:33:01,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,315 INFO L175 MemorySlicer]: Split 835 memory accesses to 4 slices as follows [2, 5, 402, 426]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 400, 403]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-17 07:33:01,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:33:01,351 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:33:01,351 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:33:01,351 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:33:01,351 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (1/1) ... [2024-11-17 07:33:01,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:33:01,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:01,381 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) [2024-11-17 07:33:01,383 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 [2024-11-17 07:33:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:33:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:33:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:33:01,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:33:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:33:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:33:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:33:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:33:01,457 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:33:01,601 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:33:01,603 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:33:02,478 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:33:02,478 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:33:08,315 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:33:08,316 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:33:08,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:33:08 BoogieIcfgContainer [2024-11-17 07:33:08,317 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:33:08,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:33:08,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:33:08,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:33:08,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:33:00" (1/3) ... [2024-11-17 07:33:08,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13c617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:33:08, skipping insertion in model container [2024-11-17 07:33:08,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:01" (2/3) ... [2024-11-17 07:33:08,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13c617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:33:08, skipping insertion in model container [2024-11-17 07:33:08,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:33:08" (3/3) ... [2024-11-17 07:33:08,324 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-11-17 07:33:08,337 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:33:08,337 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-17 07:33:08,337 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:33:08,399 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:33:08,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 67 transitions, 148 flow [2024-11-17 07:33:08,474 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-17 07:33:08,474 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:33:08,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-11-17 07:33:08,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 67 transitions, 148 flow [2024-11-17 07:33:08,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 135 flow [2024-11-17 07:33:08,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:33:08,496 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;@62b1cf1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:33:08,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-17 07:33:08,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:33:08,518 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-17 07:33:08,518 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:33:08,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:08,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:08,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:08,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash -856811514, now seen corresponding path program 1 times [2024-11-17 07:33:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166286393] [2024-11-17 07:33:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166286393] [2024-11-17 07:33:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166286393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:33:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238591545] [2024-11-17 07:33:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:09,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:09,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:09,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-17 07:33:09,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 135 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) [2024-11-17 07:33:09,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:09,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-17 07:33:09,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:10,224 INFO L124 PetriNetUnfolderBase]: 1016/2172 cut-off events. [2024-11-17 07:33:10,224 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-17 07:33:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 2172 events. 1016/2172 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14613 event pairs, 214 based on Foata normal form. 138/2029 useless extension candidates. Maximal degree in co-relation 3680. Up to 1122 conditions per place. [2024-11-17 07:33:10,239 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 81 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2024-11-17 07:33:10,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 416 flow [2024-11-17 07:33:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:33:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:33:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-17 07:33:10,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6925373134328359 [2024-11-17 07:33:10,254 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 135 flow. Second operand 5 states and 232 transitions. [2024-11-17 07:33:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 416 flow [2024-11-17 07:33:10,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 112 transitions, 407 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:33:10,262 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 172 flow [2024-11-17 07:33:10,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-11-17 07:33:10,267 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-17 07:33:10,267 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 172 flow [2024-11-17 07:33:10,268 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) [2024-11-17 07:33:10,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:10,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:10,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:33:10,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:10,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash -279078150, now seen corresponding path program 1 times [2024-11-17 07:33:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090944483] [2024-11-17 07:33:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090944483] [2024-11-17 07:33:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090944483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495004836] [2024-11-17 07:33:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:10,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:33:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:33:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:33:10,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-17 07:33:10,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:10,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:10,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-17 07:33:10,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:11,499 INFO L124 PetriNetUnfolderBase]: 1148/2434 cut-off events. [2024-11-17 07:33:11,499 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-17 07:33:11,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 2434 events. 1148/2434 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16352 event pairs, 208 based on Foata normal form. 42/2179 useless extension candidates. Maximal degree in co-relation 4302. Up to 1206 conditions per place. [2024-11-17 07:33:11,510 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 108 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-11-17 07:33:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 144 transitions, 587 flow [2024-11-17 07:33:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:33:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:33:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2024-11-17 07:33:11,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6631130063965884 [2024-11-17 07:33:11,513 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 172 flow. Second operand 7 states and 311 transitions. [2024-11-17 07:33:11,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 144 transitions, 587 flow [2024-11-17 07:33:11,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 144 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:33:11,517 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 241 flow [2024-11-17 07:33:11,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-11-17 07:33:11,517 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-17 07:33:11,518 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 241 flow [2024-11-17 07:33:11,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:11,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:11,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:11,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:33:11,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:11,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash -587536853, now seen corresponding path program 1 times [2024-11-17 07:33:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058871359] [2024-11-17 07:33:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058871359] [2024-11-17 07:33:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058871359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:11,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:33:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801418013] [2024-11-17 07:33:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:11,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:33:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:33:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:33:11,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-17 07:33:11,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-17 07:33:11,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:11,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-17 07:33:11,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:11,880 INFO L124 PetriNetUnfolderBase]: 515/1215 cut-off events. [2024-11-17 07:33:11,881 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-17 07:33:11,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1215 events. 515/1215 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7264 event pairs, 296 based on Foata normal form. 31/1147 useless extension candidates. Maximal degree in co-relation 2427. Up to 510 conditions per place. [2024-11-17 07:33:11,886 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 42 selfloop transitions, 2 changer transitions 6/77 dead transitions. [2024-11-17 07:33:11,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 327 flow [2024-11-17 07:33:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:33:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:33:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-17 07:33:11,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6567164179104478 [2024-11-17 07:33:11,888 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 241 flow. Second operand 3 states and 132 transitions. [2024-11-17 07:33:11,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 327 flow [2024-11-17 07:33:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 308 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:11,893 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 191 flow [2024-11-17 07:33:11,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-17 07:33:11,894 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-11-17 07:33:11,894 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 191 flow [2024-11-17 07:33:11,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-17 07:33:11,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:11,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:11,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:33:11,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:11,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -61486934, now seen corresponding path program 1 times [2024-11-17 07:33:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586555358] [2024-11-17 07:33:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586555358] [2024-11-17 07:33:12,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586555358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:12,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:12,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098668664] [2024-11-17 07:33:12,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:12,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:12,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:12,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:33:12,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-17 07:33:12,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:12,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:33:12,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:12,265 INFO L124 PetriNetUnfolderBase]: 455/1015 cut-off events. [2024-11-17 07:33:12,265 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-17 07:33:12,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 1015 events. 455/1015 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5308 event pairs, 308 based on Foata normal form. 24/963 useless extension candidates. Maximal degree in co-relation 1925. Up to 618 conditions per place. [2024-11-17 07:33:12,270 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 54 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-17 07:33:12,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 335 flow [2024-11-17 07:33:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-17 07:33:12,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-17 07:33:12,271 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 191 flow. Second operand 4 states and 164 transitions. [2024-11-17 07:33:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 335 flow [2024-11-17 07:33:12,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:33:12,275 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 203 flow [2024-11-17 07:33:12,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-17 07:33:12,276 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-17 07:33:12,277 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 203 flow [2024-11-17 07:33:12,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-17 07:33:12,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:12,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:12,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:33:12,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:12,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash -646881064, now seen corresponding path program 1 times [2024-11-17 07:33:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973591150] [2024-11-17 07:33:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:13,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973591150] [2024-11-17 07:33:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973591150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:13,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:13,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:33:13,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881171743] [2024-11-17 07:33:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:13,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:33:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:33:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:33:13,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-17 07:33:13,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2024-11-17 07:33:13,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:13,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-17 07:33:13,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:13,353 INFO L124 PetriNetUnfolderBase]: 398/974 cut-off events. [2024-11-17 07:33:13,353 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-17 07:33:13,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 974 events. 398/974 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5199 event pairs, 118 based on Foata normal form. 12/931 useless extension candidates. Maximal degree in co-relation 1494. Up to 457 conditions per place. [2024-11-17 07:33:13,358 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 55 selfloop transitions, 5 changer transitions 3/90 dead transitions. [2024-11-17 07:33:13,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 379 flow [2024-11-17 07:33:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:33:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:33:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-17 07:33:13,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6179104477611941 [2024-11-17 07:33:13,360 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 203 flow. Second operand 5 states and 207 transitions. [2024-11-17 07:33:13,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 379 flow [2024-11-17 07:33:13,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:33:13,362 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 206 flow [2024-11-17 07:33:13,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-17 07:33:13,363 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-11-17 07:33:13,363 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 206 flow [2024-11-17 07:33:13,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2024-11-17 07:33:13,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:13,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:33:13,364 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:13,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -794187106, now seen corresponding path program 1 times [2024-11-17 07:33:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470216247] [2024-11-17 07:33:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:14,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470216247] [2024-11-17 07:33:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470216247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52864208] [2024-11-17 07:33:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:14,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:14,600 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) [2024-11-17 07:33:14,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:33:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:14,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-17 07:33:14,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:14,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2024-11-17 07:33:15,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:33:15,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:15,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:15,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-17 07:33:15,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-17 07:33:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:15,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52864208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:15,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:15,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2024-11-17 07:33:15,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249237635] [2024-11-17 07:33:15,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:15,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:33:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:33:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:33:15,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-11-17 07:33:15,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 206 flow. Second operand has 18 states, 18 states have (on average 26.27777777777778) internal successors, (473), 18 states have internal predecessors, (473), 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) [2024-11-17 07:33:15,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:15,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-11-17 07:33:15,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:17,395 INFO L124 PetriNetUnfolderBase]: 1414/3196 cut-off events. [2024-11-17 07:33:17,395 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-11-17 07:33:17,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6832 conditions, 3196 events. 1414/3196 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 20128 event pairs, 163 based on Foata normal form. 48/3069 useless extension candidates. Maximal degree in co-relation 5574. Up to 500 conditions per place. [2024-11-17 07:33:17,412 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 231 selfloop transitions, 31 changer transitions 3/287 dead transitions. [2024-11-17 07:33:17,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 287 transitions, 1301 flow [2024-11-17 07:33:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 07:33:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-17 07:33:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 795 transitions. [2024-11-17 07:33:17,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393487109905021 [2024-11-17 07:33:17,414 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 206 flow. Second operand 22 states and 795 transitions. [2024-11-17 07:33:17,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 287 transitions, 1301 flow [2024-11-17 07:33:17,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 287 transitions, 1291 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:17,420 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 411 flow [2024-11-17 07:33:17,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=411, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-11-17 07:33:17,422 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 43 predicate places. [2024-11-17 07:33:17,422 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 411 flow [2024-11-17 07:33:17,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 26.27777777777778) internal successors, (473), 18 states have internal predecessors, (473), 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) [2024-11-17 07:33:17,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:17,423 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:17,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:33:17,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 07:33:17,628 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:17,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1150005598, now seen corresponding path program 1 times [2024-11-17 07:33:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822765469] [2024-11-17 07:33:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:18,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:18,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822765469] [2024-11-17 07:33:18,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822765469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:18,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306828763] [2024-11-17 07:33:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:19,001 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) [2024-11-17 07:33:19,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:33:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:19,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-17 07:33:19,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:19,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2024-11-17 07:33:19,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:33:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:19,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:19,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-17 07:33:19,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-17 07:33:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:19,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:19,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306828763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:19,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:19,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-17 07:33:19,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834546450] [2024-11-17 07:33:19,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:19,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:33:19,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:19,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:33:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:33:19,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-17 07:33:19,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 411 flow. Second operand has 19 states, 19 states have (on average 27.0) internal successors, (513), 19 states have internal predecessors, (513), 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) [2024-11-17 07:33:19,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:19,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-17 07:33:19,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:21,518 INFO L124 PetriNetUnfolderBase]: 2073/4923 cut-off events. [2024-11-17 07:33:21,518 INFO L125 PetriNetUnfolderBase]: For 2996/2996 co-relation queries the response was YES. [2024-11-17 07:33:21,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 4923 events. 2073/4923 cut-off events. For 2996/2996 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 35883 event pairs, 243 based on Foata normal form. 48/4760 useless extension candidates. Maximal degree in co-relation 10776. Up to 2041 conditions per place. [2024-11-17 07:33:21,554 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 195 selfloop transitions, 23 changer transitions 3/245 dead transitions. [2024-11-17 07:33:21,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 245 transitions, 1324 flow [2024-11-17 07:33:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:33:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:33:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 598 transitions. [2024-11-17 07:33:21,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5578358208955224 [2024-11-17 07:33:21,557 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 411 flow. Second operand 16 states and 598 transitions. [2024-11-17 07:33:21,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 245 transitions, 1324 flow [2024-11-17 07:33:21,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 245 transitions, 1256 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-17 07:33:21,573 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 550 flow [2024-11-17 07:33:21,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=550, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-17 07:33:21,574 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 57 predicate places. [2024-11-17 07:33:21,575 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 550 flow [2024-11-17 07:33:21,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.0) internal successors, (513), 19 states have internal predecessors, (513), 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) [2024-11-17 07:33:21,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:21,576 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:21,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:33:21,779 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,SelfDestructingSolverStorable6 [2024-11-17 07:33:21,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1348854114, now seen corresponding path program 1 times [2024-11-17 07:33:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924574409] [2024-11-17 07:33:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:23,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:23,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924574409] [2024-11-17 07:33:23,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924574409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933220513] [2024-11-17 07:33:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:23,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:23,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:23,135 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) [2024-11-17 07:33:23,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:33:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:23,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-17 07:33:23,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:23,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2024-11-17 07:33:23,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:23,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:23,432 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:23,456 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2024-11-17 07:33:23,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2024-11-17 07:33:23,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:23,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:23,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:23,503 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:23,504 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:23,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2024-11-17 07:33:23,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:23,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2024-11-17 07:33:23,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2024-11-17 07:33:23,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:23,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2024-11-17 07:33:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:23,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933220513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:23,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 20 [2024-11-17 07:33:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161759398] [2024-11-17 07:33:23,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:23,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 07:33:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 07:33:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:33:23,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:33:23,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 550 flow. Second operand has 21 states, 21 states have (on average 28.238095238095237) internal successors, (593), 21 states have internal predecessors, (593), 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) [2024-11-17 07:33:23,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:23,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:33:23,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:26,197 INFO L124 PetriNetUnfolderBase]: 2300/5446 cut-off events. [2024-11-17 07:33:26,198 INFO L125 PetriNetUnfolderBase]: For 3438/3438 co-relation queries the response was YES. [2024-11-17 07:33:26,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12992 conditions, 5446 events. 2300/5446 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39938 event pairs, 263 based on Foata normal form. 48/5262 useless extension candidates. Maximal degree in co-relation 12151. Up to 967 conditions per place. [2024-11-17 07:33:26,228 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 248 selfloop transitions, 61 changer transitions 3/338 dead transitions. [2024-11-17 07:33:26,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 338 transitions, 1759 flow [2024-11-17 07:33:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 07:33:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 07:33:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1015 transitions. [2024-11-17 07:33:26,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5410447761194029 [2024-11-17 07:33:26,232 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 550 flow. Second operand 28 states and 1015 transitions. [2024-11-17 07:33:26,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 338 transitions, 1759 flow [2024-11-17 07:33:26,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 338 transitions, 1749 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:26,246 INFO L231 Difference]: Finished difference. Result has 146 places, 121 transitions, 791 flow [2024-11-17 07:33:26,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=791, PETRI_PLACES=146, PETRI_TRANSITIONS=121} [2024-11-17 07:33:26,247 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 85 predicate places. [2024-11-17 07:33:26,247 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 121 transitions, 791 flow [2024-11-17 07:33:26,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 28.238095238095237) internal successors, (593), 21 states have internal predecessors, (593), 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) [2024-11-17 07:33:26,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:26,248 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:26,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:33:26,448 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 [2024-11-17 07:33:26,448 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:26,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1135193309, now seen corresponding path program 1 times [2024-11-17 07:33:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003413168] [2024-11-17 07:33:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003413168] [2024-11-17 07:33:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003413168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098359397] [2024-11-17 07:33:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:27,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:27,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:27,659 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) [2024-11-17 07:33:27,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:33:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:27,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-17 07:33:27,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:27,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2024-11-17 07:33:27,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:27,990 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:28,011 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2024-11-17 07:33:28,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2024-11-17 07:33:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:28,053 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:28,054 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:28,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2024-11-17 07:33:28,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:28,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2024-11-17 07:33:28,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:28,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-17 07:33:28,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:28,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-17 07:33:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:28,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098359397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:28,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-17 07:33:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064044378] [2024-11-17 07:33:28,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:28,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:33:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:33:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:33:28,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-17 07:33:28,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 121 transitions, 791 flow. Second operand has 22 states, 22 states have (on average 29.045454545454547) internal successors, (639), 22 states have internal predecessors, (639), 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) [2024-11-17 07:33:28,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:28,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-17 07:33:28,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:30,331 INFO L124 PetriNetUnfolderBase]: 2514/6210 cut-off events. [2024-11-17 07:33:30,331 INFO L125 PetriNetUnfolderBase]: For 6909/6909 co-relation queries the response was YES. [2024-11-17 07:33:30,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15982 conditions, 6210 events. 2514/6210 cut-off events. For 6909/6909 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 47223 event pairs, 303 based on Foata normal form. 72/6008 useless extension candidates. Maximal degree in co-relation 15403. Up to 1756 conditions per place. [2024-11-17 07:33:30,370 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 252 selfloop transitions, 47 changer transitions 3/330 dead transitions. [2024-11-17 07:33:30,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 330 transitions, 1976 flow [2024-11-17 07:33:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:33:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:33:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 919 transitions. [2024-11-17 07:33:30,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5715174129353234 [2024-11-17 07:33:30,373 INFO L175 Difference]: Start difference. First operand has 146 places, 121 transitions, 791 flow. Second operand 24 states and 919 transitions. [2024-11-17 07:33:30,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 330 transitions, 1976 flow [2024-11-17 07:33:30,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 330 transitions, 1855 flow, removed 46 selfloop flow, removed 13 redundant places. [2024-11-17 07:33:30,393 INFO L231 Difference]: Finished difference. Result has 164 places, 133 transitions, 947 flow [2024-11-17 07:33:30,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=947, PETRI_PLACES=164, PETRI_TRANSITIONS=133} [2024-11-17 07:33:30,394 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 103 predicate places. [2024-11-17 07:33:30,394 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 133 transitions, 947 flow [2024-11-17 07:33:30,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.045454545454547) internal successors, (639), 22 states have internal predecessors, (639), 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) [2024-11-17 07:33:30,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:30,395 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:30,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:30,599 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 [2024-11-17 07:33:30,600 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:30,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1135194302, now seen corresponding path program 1 times [2024-11-17 07:33:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:30,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639515804] [2024-11-17 07:33:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:30,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639515804] [2024-11-17 07:33:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639515804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:30,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508778815] [2024-11-17 07:33:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:30,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:30,743 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) [2024-11-17 07:33:30,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:33:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:30,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:33:30,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:30,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508778815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:33:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888429903] [2024-11-17 07:33:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:30,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:33:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:33:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:30,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:33:30,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 133 transitions, 947 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2024-11-17 07:33:30,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:30,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:33:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:31,735 INFO L124 PetriNetUnfolderBase]: 2769/6331 cut-off events. [2024-11-17 07:33:31,735 INFO L125 PetriNetUnfolderBase]: For 7493/7493 co-relation queries the response was YES. [2024-11-17 07:33:31,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16640 conditions, 6331 events. 2769/6331 cut-off events. For 7493/7493 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 45792 event pairs, 323 based on Foata normal form. 132/6048 useless extension candidates. Maximal degree in co-relation 16058. Up to 3898 conditions per place. [2024-11-17 07:33:31,771 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 117 selfloop transitions, 14 changer transitions 3/163 dead transitions. [2024-11-17 07:33:31,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 1282 flow [2024-11-17 07:33:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:33:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:33:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-11-17 07:33:31,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696517412935324 [2024-11-17 07:33:31,772 INFO L175 Difference]: Start difference. First operand has 164 places, 133 transitions, 947 flow. Second operand 6 states and 229 transitions. [2024-11-17 07:33:31,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 1282 flow [2024-11-17 07:33:31,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 163 transitions, 1230 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-17 07:33:31,795 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 919 flow [2024-11-17 07:33:31,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2024-11-17 07:33:31,797 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 94 predicate places. [2024-11-17 07:33:31,797 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 919 flow [2024-11-17 07:33:31,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2024-11-17 07:33:31,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:31,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:31,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:33:31,998 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 [2024-11-17 07:33:31,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:32,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash -831282875, now seen corresponding path program 1 times [2024-11-17 07:33:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391509428] [2024-11-17 07:33:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:33:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391509428] [2024-11-17 07:33:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391509428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683881588] [2024-11-17 07:33:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:32,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:32,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:33:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 919 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-17 07:33:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:33:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:32,702 INFO L124 PetriNetUnfolderBase]: 2604/6032 cut-off events. [2024-11-17 07:33:32,702 INFO L125 PetriNetUnfolderBase]: For 7061/7061 co-relation queries the response was YES. [2024-11-17 07:33:32,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15899 conditions, 6032 events. 2604/6032 cut-off events. For 7061/7061 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 44119 event pairs, 1424 based on Foata normal form. 132/5820 useless extension candidates. Maximal degree in co-relation 14308. Up to 2803 conditions per place. [2024-11-17 07:33:32,736 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 90 selfloop transitions, 26 changer transitions 0/145 dead transitions. [2024-11-17 07:33:32,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 1179 flow [2024-11-17 07:33:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-17 07:33:32,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2024-11-17 07:33:32,738 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 919 flow. Second operand 4 states and 154 transitions. [2024-11-17 07:33:32,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 1179 flow [2024-11-17 07:33:32,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1158 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-17 07:33:32,759 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 946 flow [2024-11-17 07:33:32,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=946, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-11-17 07:33:32,760 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 91 predicate places. [2024-11-17 07:33:32,760 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 946 flow [2024-11-17 07:33:32,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-17 07:33:32,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:32,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:32,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:33:32,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:32,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1796371429, now seen corresponding path program 1 times [2024-11-17 07:33:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348068504] [2024-11-17 07:33:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:32,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:32,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348068504] [2024-11-17 07:33:32,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348068504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:32,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410064970] [2024-11-17 07:33:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:32,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:32,885 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) [2024-11-17 07:33:32,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:33:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:33,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:33:33,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:33,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:33,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410064970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:33,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:33,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-17 07:33:33,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858950108] [2024-11-17 07:33:33,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:33,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:33:33,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:33,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:33:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:33:33,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:33:33,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 946 flow. Second operand has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 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) [2024-11-17 07:33:33,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:33,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:33:33,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:33,816 INFO L124 PetriNetUnfolderBase]: 2414/5606 cut-off events. [2024-11-17 07:33:33,816 INFO L125 PetriNetUnfolderBase]: For 8059/8059 co-relation queries the response was YES. [2024-11-17 07:33:33,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15266 conditions, 5606 events. 2414/5606 cut-off events. For 8059/8059 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 41144 event pairs, 1202 based on Foata normal form. 36/5352 useless extension candidates. Maximal degree in co-relation 13664. Up to 2367 conditions per place. [2024-11-17 07:33:33,845 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 120 selfloop transitions, 17 changer transitions 0/166 dead transitions. [2024-11-17 07:33:33,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 166 transitions, 1304 flow [2024-11-17 07:33:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:33:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:33:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-11-17 07:33:33,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5692963752665245 [2024-11-17 07:33:33,846 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 946 flow. Second operand 7 states and 267 transitions. [2024-11-17 07:33:33,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 166 transitions, 1304 flow [2024-11-17 07:33:33,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 166 transitions, 1265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:33:33,866 INFO L231 Difference]: Finished difference. Result has 159 places, 131 transitions, 978 flow [2024-11-17 07:33:33,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=159, PETRI_TRANSITIONS=131} [2024-11-17 07:33:33,867 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 98 predicate places. [2024-11-17 07:33:33,867 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 131 transitions, 978 flow [2024-11-17 07:33:33,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 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) [2024-11-17 07:33:33,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:33,867 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:33,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:33:34,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:34,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:34,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash -901967564, now seen corresponding path program 1 times [2024-11-17 07:33:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:34,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812209928] [2024-11-17 07:33:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:34,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812209928] [2024-11-17 07:33:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812209928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995705782] [2024-11-17 07:33:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:35,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:35,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:35,715 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) [2024-11-17 07:33:35,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:33:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:35,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-17 07:33:35,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:35,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2024-11-17 07:33:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,017 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:36,034 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2024-11-17 07:33:36,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59 [2024-11-17 07:33:36,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,074 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:36,075 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2024-11-17 07:33:36,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:36,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2024-11-17 07:33:36,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,201 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:36,212 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-17 07:33:36,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2024-11-17 07:33:36,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:36,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2024-11-17 07:33:36,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:36,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2024-11-17 07:33:36,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:36,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-17 07:33:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:36,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995705782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:36,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 31 [2024-11-17 07:33:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437044174] [2024-11-17 07:33:36,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:36,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-17 07:33:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-17 07:33:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2024-11-17 07:33:36,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-17 07:33:36,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 131 transitions, 978 flow. Second operand has 32 states, 32 states have (on average 28.96875) internal successors, (927), 32 states have internal predecessors, (927), 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) [2024-11-17 07:33:36,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:36,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-17 07:33:36,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:39,142 INFO L124 PetriNetUnfolderBase]: 1175/2805 cut-off events. [2024-11-17 07:33:39,142 INFO L125 PetriNetUnfolderBase]: For 4264/4264 co-relation queries the response was YES. [2024-11-17 07:33:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 2805 events. 1175/2805 cut-off events. For 4264/4264 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 15956 event pairs, 143 based on Foata normal form. 48/2747 useless extension candidates. Maximal degree in co-relation 7816. Up to 797 conditions per place. [2024-11-17 07:33:39,157 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 209 selfloop transitions, 30 changer transitions 3/267 dead transitions. [2024-11-17 07:33:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 267 transitions, 1461 flow [2024-11-17 07:33:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 07:33:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 07:33:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 860 transitions. [2024-11-17 07:33:39,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580791693705386 [2024-11-17 07:33:39,160 INFO L175 Difference]: Start difference. First operand has 159 places, 131 transitions, 978 flow. Second operand 23 states and 860 transitions. [2024-11-17 07:33:39,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 267 transitions, 1461 flow [2024-11-17 07:33:39,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 267 transitions, 1334 flow, removed 11 selfloop flow, removed 34 redundant places. [2024-11-17 07:33:39,171 INFO L231 Difference]: Finished difference. Result has 137 places, 96 transitions, 524 flow [2024-11-17 07:33:39,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=524, PETRI_PLACES=137, PETRI_TRANSITIONS=96} [2024-11-17 07:33:39,172 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 76 predicate places. [2024-11-17 07:33:39,172 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 96 transitions, 524 flow [2024-11-17 07:33:39,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.96875) internal successors, (927), 32 states have internal predecessors, (927), 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) [2024-11-17 07:33:39,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:39,173 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:39,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:33:39,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:39,374 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:33:39,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1656065070, now seen corresponding path program 2 times [2024-11-17 07:33:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552279931] [2024-11-17 07:33:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:42,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552279931] [2024-11-17 07:33:42,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552279931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057827768] [2024-11-17 07:33:42,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:33:42,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:42,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:42,117 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) [2024-11-17 07:33:42,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:33:45,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:33:45,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:33:45,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-17 07:33:45,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:45,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2024-11-17 07:33:45,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:33:45,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:45,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-17 07:33:45,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:33:45,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-17 07:33:46,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2024-11-17 07:33:46,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:33:46,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-17 07:33:46,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:33:46,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2024-11-17 07:33:46,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-17 07:33:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:46,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057827768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:48,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2024-11-17 07:33:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404651031] [2024-11-17 07:33:48,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:48,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-17 07:33:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:48,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-17 07:33:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2024-11-17 07:33:48,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-17 07:33:48,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 96 transitions, 524 flow. Second operand has 43 states, 43 states have (on average 26.72093023255814) internal successors, (1149), 43 states have internal predecessors, (1149), 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) [2024-11-17 07:33:48,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:48,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-17 07:33:48,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:07,668 INFO L124 PetriNetUnfolderBase]: 1644/3762 cut-off events. [2024-11-17 07:34:07,669 INFO L125 PetriNetUnfolderBase]: For 4781/4781 co-relation queries the response was YES. [2024-11-17 07:34:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9998 conditions, 3762 events. 1644/3762 cut-off events. For 4781/4781 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 21597 event pairs, 183 based on Foata normal form. 48/3650 useless extension candidates. Maximal degree in co-relation 9973. Up to 916 conditions per place. [2024-11-17 07:34:07,686 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 314 selfloop transitions, 39 changer transitions 3/379 dead transitions. [2024-11-17 07:34:07,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 379 transitions, 2010 flow [2024-11-17 07:34:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-17 07:34:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-17 07:34:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1202 transitions. [2024-11-17 07:34:07,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5276558384547849 [2024-11-17 07:34:07,689 INFO L175 Difference]: Start difference. First operand has 137 places, 96 transitions, 524 flow. Second operand 34 states and 1202 transitions. [2024-11-17 07:34:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 379 transitions, 2010 flow [2024-11-17 07:34:07,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 379 transitions, 1961 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-11-17 07:34:07,699 INFO L231 Difference]: Finished difference. Result has 160 places, 108 transitions, 696 flow [2024-11-17 07:34:07,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=696, PETRI_PLACES=160, PETRI_TRANSITIONS=108} [2024-11-17 07:34:07,700 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 99 predicate places. [2024-11-17 07:34:07,700 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 108 transitions, 696 flow [2024-11-17 07:34:07,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 26.72093023255814) internal successors, (1149), 43 states have internal predecessors, (1149), 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) [2024-11-17 07:34:07,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:07,701 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:07,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:07,901 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,SelfDestructingSolverStorable13 [2024-11-17 07:34:07,901 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:34:07,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1048860421, now seen corresponding path program 2 times [2024-11-17 07:34:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:07,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390142637] [2024-11-17 07:34:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-17 07:34:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390142637] [2024-11-17 07:34:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390142637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:08,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233459088] [2024-11-17 07:34:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:08,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:08,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-17 07:34:08,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 108 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-17 07:34:08,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:08,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-17 07:34:08,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:08,509 INFO L124 PetriNetUnfolderBase]: 1063/2889 cut-off events. [2024-11-17 07:34:08,509 INFO L125 PetriNetUnfolderBase]: For 5046/5046 co-relation queries the response was YES. [2024-11-17 07:34:08,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8032 conditions, 2889 events. 1063/2889 cut-off events. For 5046/5046 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16322 event pairs, 204 based on Foata normal form. 116/2905 useless extension candidates. Maximal degree in co-relation 8000. Up to 1593 conditions per place. [2024-11-17 07:34:08,523 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 80 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-17 07:34:08,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 883 flow [2024-11-17 07:34:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-17 07:34:08,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6467661691542289 [2024-11-17 07:34:08,524 INFO L175 Difference]: Start difference. First operand has 160 places, 108 transitions, 696 flow. Second operand 3 states and 130 transitions. [2024-11-17 07:34:08,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 883 flow [2024-11-17 07:34:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 116 transitions, 795 flow, removed 15 selfloop flow, removed 24 redundant places. [2024-11-17 07:34:08,532 INFO L231 Difference]: Finished difference. Result has 138 places, 108 transitions, 616 flow [2024-11-17 07:34:08,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=138, PETRI_TRANSITIONS=108} [2024-11-17 07:34:08,533 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 77 predicate places. [2024-11-17 07:34:08,533 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 108 transitions, 616 flow [2024-11-17 07:34:08,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-17 07:34:08,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:08,534 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:08,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:34:08,534 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:34:08,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1113075302, now seen corresponding path program 2 times [2024-11-17 07:34:08,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:08,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213243300] [2024-11-17 07:34:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 07:34:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213243300] [2024-11-17 07:34:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213243300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895028301] [2024-11-17 07:34:09,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:09,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:09,534 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) [2024-11-17 07:34:09,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:34:09,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:09,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:09,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:34:09,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:10,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 07:34:10,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-17 07:34:10,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-11-17 07:34:10,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:34:10,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-17 07:34:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-17 07:34:10,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:10,286 INFO L349 Elim1Store]: treesize reduction 49, result has 53.3 percent of original size [2024-11-17 07:34:10,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 188 [2024-11-17 07:34:10,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:34:10,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 140 [2024-11-17 07:34:10,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2024-11-17 07:34:10,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:34:10,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 184 [2024-11-17 07:34:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-17 07:34:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895028301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:10,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:10,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-17 07:34:10,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274402178] [2024-11-17 07:34:10,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:10,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:34:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:34:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:34:10,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:34:10,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 108 transitions, 616 flow. Second operand has 17 states, 17 states have (on average 29.176470588235293) internal successors, (496), 17 states have internal predecessors, (496), 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) [2024-11-17 07:34:10,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:10,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:34:10,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:11,211 INFO L124 PetriNetUnfolderBase]: 1188/2811 cut-off events. [2024-11-17 07:34:11,211 INFO L125 PetriNetUnfolderBase]: For 3543/3549 co-relation queries the response was YES. [2024-11-17 07:34:11,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 2811 events. 1188/2811 cut-off events. For 3543/3549 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 15221 event pairs, 603 based on Foata normal form. 50/2651 useless extension candidates. Maximal degree in co-relation 7708. Up to 1221 conditions per place. [2024-11-17 07:34:11,221 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 67 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2024-11-17 07:34:11,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 122 transitions, 824 flow [2024-11-17 07:34:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:34:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:34:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-17 07:34:11,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5223880597014925 [2024-11-17 07:34:11,222 INFO L175 Difference]: Start difference. First operand has 138 places, 108 transitions, 616 flow. Second operand 6 states and 210 transitions. [2024-11-17 07:34:11,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 122 transitions, 824 flow [2024-11-17 07:34:11,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 122 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:11,229 INFO L231 Difference]: Finished difference. Result has 137 places, 105 transitions, 661 flow [2024-11-17 07:34:11,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=137, PETRI_TRANSITIONS=105} [2024-11-17 07:34:11,230 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 76 predicate places. [2024-11-17 07:34:11,230 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 105 transitions, 661 flow [2024-11-17 07:34:11,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 29.176470588235293) internal successors, (496), 17 states have internal predecessors, (496), 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) [2024-11-17 07:34:11,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:11,230 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:11,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:34:11,431 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,SelfDestructingSolverStorable15 [2024-11-17 07:34:11,431 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:34:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1718572991, now seen corresponding path program 1 times [2024-11-17 07:34:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157671094] [2024-11-17 07:34:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:11,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157671094] [2024-11-17 07:34:11,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157671094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596034288] [2024-11-17 07:34:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:11,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:11,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:11,604 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) [2024-11-17 07:34:11,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:34:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:11,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:34:11,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:11,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596034288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:11,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:11,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-17 07:34:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219971871] [2024-11-17 07:34:11,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:11,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:34:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:34:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:34:11,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-17 07:34:11,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 105 transitions, 661 flow. Second operand has 18 states, 18 states have (on average 29.333333333333332) internal successors, (528), 18 states have internal predecessors, (528), 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) [2024-11-17 07:34:11,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:11,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-17 07:34:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:12,482 INFO L124 PetriNetUnfolderBase]: 840/2191 cut-off events. [2024-11-17 07:34:12,482 INFO L125 PetriNetUnfolderBase]: For 5183/5183 co-relation queries the response was YES. [2024-11-17 07:34:12,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 2191 events. 840/2191 cut-off events. For 5183/5183 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10662 event pairs, 260 based on Foata normal form. 50/2166 useless extension candidates. Maximal degree in co-relation 6558. Up to 548 conditions per place. [2024-11-17 07:34:12,490 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 131 selfloop transitions, 17 changer transitions 0/175 dead transitions. [2024-11-17 07:34:12,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 1143 flow [2024-11-17 07:34:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:34:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:34:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 531 transitions. [2024-11-17 07:34:12,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283582089552239 [2024-11-17 07:34:12,492 INFO L175 Difference]: Start difference. First operand has 137 places, 105 transitions, 661 flow. Second operand 15 states and 531 transitions. [2024-11-17 07:34:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 175 transitions, 1143 flow [2024-11-17 07:34:12,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 175 transitions, 1095 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:12,501 INFO L231 Difference]: Finished difference. Result has 153 places, 110 transitions, 706 flow [2024-11-17 07:34:12,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=706, PETRI_PLACES=153, PETRI_TRANSITIONS=110} [2024-11-17 07:34:12,502 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 92 predicate places. [2024-11-17 07:34:12,502 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 110 transitions, 706 flow [2024-11-17 07:34:12,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 29.333333333333332) internal successors, (528), 18 states have internal predecessors, (528), 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) [2024-11-17 07:34:12,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:12,503 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:12,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 07:34:12,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 07:34:12,704 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-17 07:34:12,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -401755413, now seen corresponding path program 2 times [2024-11-17 07:34:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526071070] [2024-11-17 07:34:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526071070] [2024-11-17 07:34:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526071070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914653200] [2024-11-17 07:34:14,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:14,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:14,821 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) [2024-11-17 07:34:14,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:34:15,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:15,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:15,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-17 07:34:15,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:15,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2024-11-17 07:34:15,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-17 07:34:15,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-17 07:34:15,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-17 07:34:15,372 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-17 07:34:15,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-17 07:34:15,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-17 07:34:15,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-17 07:34:15,515 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-17 07:34:15,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-17 07:34:15,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-17 07:34:15,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-17 07:34:15,677 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-17 07:34:15,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-17 07:34:15,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-17 07:34:15,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-17 07:34:15,848 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-17 07:34:15,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-17 07:34:15,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-17 07:34:15,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 07:34:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:15,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914653200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:17,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 19] total 50 [2024-11-17 07:34:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639133087] [2024-11-17 07:34:17,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:17,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-17 07:34:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-17 07:34:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=714, Invalid=1938, Unknown=0, NotChecked=0, Total=2652 [2024-11-17 07:34:17,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-17 07:34:17,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 110 transitions, 706 flow. Second operand has 52 states, 52 states have (on average 28.884615384615383) internal successors, (1502), 52 states have internal predecessors, (1502), 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) [2024-11-17 07:34:17,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:17,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-17 07:34:17,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand