./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longest-2.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/stack_longest-2.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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:33:52,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:33:52,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:33:52,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:33:52,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:33:52,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:33:52,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:33:52,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:33:52,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:33:52,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:33:52,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:33:52,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:33:52,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:33:52,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:33:52,327 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:33:52,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:33:52,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:33:52,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:33:52,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:33:52,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:33:52,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:33:52,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:33:52,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:33:52,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:33:52,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:33:52,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:33:52,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:33:52,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:33:52,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:33:52,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:33:52,333 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:33:52,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:33:52,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:33:52,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:33:52,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:33:52,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:33:52,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:33:52,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:33:52,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:33:52,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:33:52,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:33:52,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:33:52,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:33:52,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:33:52,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2024-11-17 07:33:52,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:33:52,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:33:52,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:33:52,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:33:52,663 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:33:52,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longest-2.i [2024-11-17 07:33:54,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:33:54,367 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:33:54,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i [2024-11-17 07:33:54,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35561a40/3defbe62188e4bd082bdd8497705b9b4/FLAGc4b7f3fa6 [2024-11-17 07:33:54,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35561a40/3defbe62188e4bd082bdd8497705b9b4 [2024-11-17 07:33:54,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:33:54,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:33:54,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:33:54,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:33:54,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:33:54,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:33:54" (1/1) ... [2024-11-17 07:33:54,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f9934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:54, skipping insertion in model container [2024-11-17 07:33:54,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:33:54" (1/1) ... [2024-11-17 07:33:54,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:33:54,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:33:54,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:33:55,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:33:55,131 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:33:55,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55 WrapperNode [2024-11-17 07:33:55,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:33:55,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:33:55,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:33:55,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:33:55,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,259 INFO L138 Inliner]: procedures = 277, calls = 831, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 955 [2024-11-17 07:33:55,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:33:55,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:33:55,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:33:55,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:33:55,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,343 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 5, 802]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 5, 800]. The 1 writes are split as follows [0, 0, 1]. [2024-11-17 07:33:55,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,379 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:33:55,406 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:33:55,406 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:33:55,407 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:33:55,408 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (1/1) ... [2024-11-17 07:33:55,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:33:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:55,442 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 07:33:55,445 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 07:33:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:33:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:33:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:33:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:33:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:33:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:33:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:33:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:33:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:33:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:33:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:33:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:33:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:33:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:33:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:33:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:33:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:33:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:33:55,551 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 07:33:55,713 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:33:55,715 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:33:56,792 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2024-11-17 07:33:56,792 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2024-11-17 07:33:56,793 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2024-11-17 07:33:56,794 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:33:56,795 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:34:09,891 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:34:09,891 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:34:09,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:09 BoogieIcfgContainer [2024-11-17 07:34:09,891 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:34:09,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:34:09,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:34:09,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:34:09,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:33:54" (1/3) ... [2024-11-17 07:34:09,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4033f970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:09, skipping insertion in model container [2024-11-17 07:34:09,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:33:55" (2/3) ... [2024-11-17 07:34:09,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4033f970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:09, skipping insertion in model container [2024-11-17 07:34:09,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:09" (3/3) ... [2024-11-17 07:34:09,903 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-11-17 07:34:09,921 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:34:09,922 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:34:09,922 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:34:10,003 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:34:10,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 122 flow [2024-11-17 07:34:10,114 INFO L124 PetriNetUnfolderBase]: 7/52 cut-off events. [2024-11-17 07:34:10,114 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:34:10,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 7/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-17 07:34:10,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 54 transitions, 122 flow [2024-11-17 07:34:10,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 50 transitions, 109 flow [2024-11-17 07:34:10,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:34:10,146 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;@33295896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:34:10,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:34:10,178 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:34:10,179 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-11-17 07:34:10,179 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:34:10,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:10,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:10,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:10,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1787727959, now seen corresponding path program 1 times [2024-11-17 07:34:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:10,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034527196] [2024-11-17 07:34:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:10,906 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 07:34:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034527196] [2024-11-17 07:34:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034527196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:10,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:10,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975374794] [2024-11-17 07:34:10,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:10,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:10,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:10,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-11-17 07:34:10,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:10,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:10,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-11-17 07:34:10,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:11,323 INFO L124 PetriNetUnfolderBase]: 730/1508 cut-off events. [2024-11-17 07:34:11,324 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-17 07:34:11,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1508 events. 730/1508 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8525 event pairs, 224 based on Foata normal form. 129/1443 useless extension candidates. Maximal degree in co-relation 2635. Up to 692 conditions per place. [2024-11-17 07:34:11,342 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-11-17 07:34:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 306 flow [2024-11-17 07:34:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-11-17 07:34:11,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-17 07:34:11,357 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 109 flow. Second operand 4 states and 153 transitions. [2024-11-17 07:34:11,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 306 flow [2024-11-17 07:34:11,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:11,365 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 136 flow [2024-11-17 07:34:11,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-17 07:34:11,370 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-17 07:34:11,372 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 136 flow [2024-11-17 07:34:11,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:11,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:11,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:11,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:34:11,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:11,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1775680470, now seen corresponding path program 1 times [2024-11-17 07:34:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570185627] [2024-11-17 07:34:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:11,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:11,720 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 07:34:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570185627] [2024-11-17 07:34:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570185627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:11,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009217949] [2024-11-17 07:34:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:11,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:11,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:11,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:11,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 07:34:11,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:11,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:11,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:12,157 INFO L124 PetriNetUnfolderBase]: 1246/2595 cut-off events. [2024-11-17 07:34:12,157 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-17 07:34:12,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 2595 events. 1246/2595 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 15887 event pairs, 671 based on Foata normal form. 74/2467 useless extension candidates. Maximal degree in co-relation 4454. Up to 1411 conditions per place. [2024-11-17 07:34:12,176 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 72 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-17 07:34:12,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 409 flow [2024-11-17 07:34:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 07:34:12,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6712962962962963 [2024-11-17 07:34:12,180 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 136 flow. Second operand 4 states and 145 transitions. [2024-11-17 07:34:12,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 92 transitions, 409 flow [2024-11-17 07:34:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:34:12,185 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 160 flow [2024-11-17 07:34:12,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-17 07:34:12,186 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-17 07:34:12,187 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 160 flow [2024-11-17 07:34:12,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 07:34:12,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:12,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:12,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:34:12,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:12,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1136290374, now seen corresponding path program 1 times [2024-11-17 07:34:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:12,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938722245] [2024-11-17 07:34:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:12,674 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 07:34:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938722245] [2024-11-17 07:34:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938722245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:12,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076980206] [2024-11-17 07:34:12,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:12,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:12,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:12,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:12,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:12,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:12,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:12,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:12,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:13,114 INFO L124 PetriNetUnfolderBase]: 1798/3724 cut-off events. [2024-11-17 07:34:13,114 INFO L125 PetriNetUnfolderBase]: For 1001/1015 co-relation queries the response was YES. [2024-11-17 07:34:13,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 3724 events. 1798/3724 cut-off events. For 1001/1015 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25163 event pairs, 903 based on Foata normal form. 82/3667 useless extension candidates. Maximal degree in co-relation 7378. Up to 2115 conditions per place. [2024-11-17 07:34:13,140 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 73 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-11-17 07:34:13,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 445 flow [2024-11-17 07:34:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-17 07:34:13,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-11-17 07:34:13,143 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 160 flow. Second operand 4 states and 146 transitions. [2024-11-17 07:34:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 445 flow [2024-11-17 07:34:13,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:13,153 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 182 flow [2024-11-17 07:34:13,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-17 07:34:13,154 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-11-17 07:34:13,155 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 182 flow [2024-11-17 07:34:13,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:13,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:13,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:13,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:34:13,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:13,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1002922152, now seen corresponding path program 1 times [2024-11-17 07:34:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726515140] [2024-11-17 07:34:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:13,483 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 07:34:13,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726515140] [2024-11-17 07:34:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726515140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870217307] [2024-11-17 07:34:13,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:13,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:13,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:13,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:13,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-11-17 07:34:13,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:34:13,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:13,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-11-17 07:34:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:13,756 INFO L124 PetriNetUnfolderBase]: 898/2079 cut-off events. [2024-11-17 07:34:13,756 INFO L125 PetriNetUnfolderBase]: For 901/1009 co-relation queries the response was YES. [2024-11-17 07:34:13,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 2079 events. 898/2079 cut-off events. For 901/1009 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 13105 event pairs, 285 based on Foata normal form. 76/2080 useless extension candidates. Maximal degree in co-relation 3685. Up to 946 conditions per place. [2024-11-17 07:34:13,772 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 46 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-17 07:34:13,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 338 flow [2024-11-17 07:34:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-17 07:34:13,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:34:13,775 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 182 flow. Second operand 3 states and 108 transitions. [2024-11-17 07:34:13,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 338 flow [2024-11-17 07:34:13,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:13,783 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 181 flow [2024-11-17 07:34:13,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-17 07:34:13,784 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2024-11-17 07:34:13,784 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 181 flow [2024-11-17 07:34:13,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:34:13,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:13,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:13,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:34:13,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:13,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 529930815, now seen corresponding path program 1 times [2024-11-17 07:34:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309130837] [2024-11-17 07:34:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,076 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 07:34:14,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309130837] [2024-11-17 07:34:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309130837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:14,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621096737] [2024-11-17 07:34:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:14,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:14,080 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 07:34:14,081 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 07:34:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:34:14,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:14,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621096737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:14,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:34:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644591881] [2024-11-17 07:34:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:14,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:14,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:34:14,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:14,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 07:34:14,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:14,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:14,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:14,967 INFO L124 PetriNetUnfolderBase]: 931/2095 cut-off events. [2024-11-17 07:34:14,967 INFO L125 PetriNetUnfolderBase]: For 935/1041 co-relation queries the response was YES. [2024-11-17 07:34:14,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 2095 events. 931/2095 cut-off events. For 935/1041 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12773 event pairs, 189 based on Foata normal form. 70/2107 useless extension candidates. Maximal degree in co-relation 2696. Up to 735 conditions per place. [2024-11-17 07:34:14,982 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 87 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2024-11-17 07:34:14,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 583 flow [2024-11-17 07:34:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:34:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:34:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-11-17 07:34:14,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-17 07:34:14,984 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 181 flow. Second operand 7 states and 216 transitions. [2024-11-17 07:34:14,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 583 flow [2024-11-17 07:34:14,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:14,988 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 237 flow [2024-11-17 07:34:14,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-11-17 07:34:14,989 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2024-11-17 07:34:14,989 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 237 flow [2024-11-17 07:34:14,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 07:34:14,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:14,990 INFO L204 CegarLoopForPetriNet]: trace histogram [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 07:34:15,011 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 07:34:15,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:15,194 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:15,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 506214219, now seen corresponding path program 1 times [2024-11-17 07:34:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453602356] [2024-11-17 07:34:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:15,348 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 07:34:15,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:15,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453602356] [2024-11-17 07:34:15,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453602356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:15,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:15,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631486037] [2024-11-17 07:34:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:15,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:15,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:15,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:15,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 07:34:15,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:15,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:15,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:15,709 INFO L124 PetriNetUnfolderBase]: 1173/2763 cut-off events. [2024-11-17 07:34:15,709 INFO L125 PetriNetUnfolderBase]: For 2005/2127 co-relation queries the response was YES. [2024-11-17 07:34:15,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 2763 events. 1173/2763 cut-off events. For 2005/2127 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18727 event pairs, 646 based on Foata normal form. 26/2769 useless extension candidates. Maximal degree in co-relation 5300. Up to 1363 conditions per place. [2024-11-17 07:34:15,730 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 63 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-17 07:34:15,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 496 flow [2024-11-17 07:34:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-17 07:34:15,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-11-17 07:34:15,732 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 237 flow. Second operand 4 states and 131 transitions. [2024-11-17 07:34:15,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 496 flow [2024-11-17 07:34:15,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 488 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:15,739 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 279 flow [2024-11-17 07:34:15,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-17 07:34:15,739 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 22 predicate places. [2024-11-17 07:34:15,740 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 279 flow [2024-11-17 07:34:15,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 07:34:15,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:15,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:15,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:34:15,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:15,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -752011956, now seen corresponding path program 1 times [2024-11-17 07:34:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040571071] [2024-11-17 07:34:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:15,981 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 07:34:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040571071] [2024-11-17 07:34:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040571071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178805547] [2024-11-17 07:34:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:15,983 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 07:34:15,985 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 07:34:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:16,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:34:16,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:16,341 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 07:34:16,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:16,417 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 07:34:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178805547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:16,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:34:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739768736] [2024-11-17 07:34:16,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:16,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:34:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:34:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:34:16,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:16,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 279 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:16,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:16,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:16,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:17,639 INFO L124 PetriNetUnfolderBase]: 2547/5825 cut-off events. [2024-11-17 07:34:17,639 INFO L125 PetriNetUnfolderBase]: For 6888/7322 co-relation queries the response was YES. [2024-11-17 07:34:17,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14946 conditions, 5825 events. 2547/5825 cut-off events. For 6888/7322 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 41129 event pairs, 407 based on Foata normal form. 151/5964 useless extension candidates. Maximal degree in co-relation 7953. Up to 1167 conditions per place. [2024-11-17 07:34:17,689 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 191 selfloop transitions, 33 changer transitions 0/240 dead transitions. [2024-11-17 07:34:17,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 240 transitions, 1490 flow [2024-11-17 07:34:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:34:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:34:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 490 transitions. [2024-11-17 07:34:17,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-11-17 07:34:17,692 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 279 flow. Second operand 16 states and 490 transitions. [2024-11-17 07:34:17,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 240 transitions, 1490 flow [2024-11-17 07:34:17,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 240 transitions, 1478 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:17,708 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 606 flow [2024-11-17 07:34:17,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=606, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-17 07:34:17,710 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2024-11-17 07:34:17,711 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 606 flow [2024-11-17 07:34:17,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:17,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:17,712 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:17,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:17,915 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 07:34:17,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:17,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1973122818, now seen corresponding path program 1 times [2024-11-17 07:34:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:17,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455387428] [2024-11-17 07:34:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455387428] [2024-11-17 07:34:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455387428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752865089] [2024-11-17 07:34:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:18,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:18,220 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 07:34:18,221 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 07:34:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:18,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:18,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:18,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752865089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:34:18,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910166640] [2024-11-17 07:34:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:18,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:34:18,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:34:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:34:18,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 07:34:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 07:34:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 07:34:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:19,724 INFO L124 PetriNetUnfolderBase]: 3551/7475 cut-off events. [2024-11-17 07:34:19,725 INFO L125 PetriNetUnfolderBase]: For 11010/11212 co-relation queries the response was YES. [2024-11-17 07:34:19,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20224 conditions, 7475 events. 3551/7475 cut-off events. For 11010/11212 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 52285 event pairs, 798 based on Foata normal form. 204/7467 useless extension candidates. Maximal degree in co-relation 17033. Up to 3434 conditions per place. [2024-11-17 07:34:19,779 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 126 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2024-11-17 07:34:19,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 1389 flow [2024-11-17 07:34:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-17 07:34:19,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-17 07:34:19,780 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 606 flow. Second operand 4 states and 129 transitions. [2024-11-17 07:34:19,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 1389 flow [2024-11-17 07:34:19,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1317 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:19,800 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 572 flow [2024-11-17 07:34:19,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-17 07:34:19,800 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-11-17 07:34:19,800 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 572 flow [2024-11-17 07:34:19,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 07:34:19,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:19,801 INFO L204 CegarLoopForPetriNet]: trace histogram [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 07:34:19,822 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 07:34:20,002 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 07:34:20,002 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:20,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash -434953589, now seen corresponding path program 1 times [2024-11-17 07:34:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481752620] [2024-11-17 07:34:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,250 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 07:34:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481752620] [2024-11-17 07:34:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481752620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:20,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:34:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695390720] [2024-11-17 07:34:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:34:20,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:20,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 07:34:20,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,975 INFO L124 PetriNetUnfolderBase]: 2796/6161 cut-off events. [2024-11-17 07:34:20,975 INFO L125 PetriNetUnfolderBase]: For 11134/11495 co-relation queries the response was YES. [2024-11-17 07:34:20,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17431 conditions, 6161 events. 2796/6161 cut-off events. For 11134/11495 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 43064 event pairs, 564 based on Foata normal form. 39/6190 useless extension candidates. Maximal degree in co-relation 14538. Up to 3403 conditions per place. [2024-11-17 07:34:21,026 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 119 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2024-11-17 07:34:21,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 1113 flow [2024-11-17 07:34:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:34:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:34:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-17 07:34:21,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-11-17 07:34:21,028 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 572 flow. Second operand 6 states and 187 transitions. [2024-11-17 07:34:21,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 1113 flow [2024-11-17 07:34:21,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:21,055 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 661 flow [2024-11-17 07:34:21,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-17 07:34:21,056 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2024-11-17 07:34:21,056 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 661 flow [2024-11-17 07:34:21,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 07:34:21,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,058 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:21,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:34:21,058 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:21,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1037263222, now seen corresponding path program 1 times [2024-11-17 07:34:21,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645553341] [2024-11-17 07:34:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:34:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645553341] [2024-11-17 07:34:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645553341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189385552] [2024-11-17 07:34:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:21,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 07:34:21,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 661 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 07:34:21,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:22,047 INFO L124 PetriNetUnfolderBase]: 3393/7448 cut-off events. [2024-11-17 07:34:22,047 INFO L125 PetriNetUnfolderBase]: For 11836/12018 co-relation queries the response was YES. [2024-11-17 07:34:22,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20029 conditions, 7448 events. 3393/7448 cut-off events. For 11836/12018 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 53534 event pairs, 888 based on Foata normal form. 0/7430 useless extension candidates. Maximal degree in co-relation 16932. Up to 2690 conditions per place. [2024-11-17 07:34:22,107 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 144 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2024-11-17 07:34:22,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 176 transitions, 1621 flow [2024-11-17 07:34:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-17 07:34:22,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-17 07:34:22,109 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 661 flow. Second operand 4 states and 129 transitions. [2024-11-17 07:34:22,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 176 transitions, 1621 flow [2024-11-17 07:34:22,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 176 transitions, 1611 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:22,136 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 673 flow [2024-11-17 07:34:22,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-11-17 07:34:22,137 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-17 07:34:22,137 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 673 flow [2024-11-17 07:34:22,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:22,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:22,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:22,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:34:22,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:22,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1735392466, now seen corresponding path program 1 times [2024-11-17 07:34:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80110512] [2024-11-17 07:34:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:22,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80110512] [2024-11-17 07:34:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80110512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368998602] [2024-11-17 07:34:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:22,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:22,398 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 07:34:22,399 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 07:34:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:22,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:22,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:22,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368998602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:22,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:34:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548598454] [2024-11-17 07:34:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:22,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:34:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:22,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:34:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:34:22,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 07:34:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 673 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 07:34:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 07:34:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:23,471 INFO L124 PetriNetUnfolderBase]: 3517/7124 cut-off events. [2024-11-17 07:34:23,472 INFO L125 PetriNetUnfolderBase]: For 15652/15664 co-relation queries the response was YES. [2024-11-17 07:34:23,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21375 conditions, 7124 events. 3517/7124 cut-off events. For 15652/15664 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 48729 event pairs, 1086 based on Foata normal form. 178/7111 useless extension candidates. Maximal degree in co-relation 20451. Up to 4321 conditions per place. [2024-11-17 07:34:23,517 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 97 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-11-17 07:34:23,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 1093 flow [2024-11-17 07:34:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-17 07:34:23,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-17 07:34:23,518 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 673 flow. Second operand 4 states and 125 transitions. [2024-11-17 07:34:23,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 1093 flow [2024-11-17 07:34:23,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 1071 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:23,548 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 671 flow [2024-11-17 07:34:23,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=671, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-11-17 07:34:23,549 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-17 07:34:23,549 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 671 flow [2024-11-17 07:34:23,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 07:34:23,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:23,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:34:23,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:34:23,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:23,750 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:23,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2037406433, now seen corresponding path program 1 times [2024-11-17 07:34:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244204661] [2024-11-17 07:34:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:34:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244204661] [2024-11-17 07:34:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244204661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:23,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:23,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450545129] [2024-11-17 07:34:23,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:23,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:23,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 07:34:23,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 07:34:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 07:34:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:24,654 INFO L124 PetriNetUnfolderBase]: 3274/6799 cut-off events. [2024-11-17 07:34:24,654 INFO L125 PetriNetUnfolderBase]: For 13746/13781 co-relation queries the response was YES. [2024-11-17 07:34:24,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20050 conditions, 6799 events. 3274/6799 cut-off events. For 13746/13781 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 46175 event pairs, 837 based on Foata normal form. 178/6906 useless extension candidates. Maximal degree in co-relation 17127. Up to 2981 conditions per place. [2024-11-17 07:34:24,688 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 108 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-11-17 07:34:24,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1221 flow [2024-11-17 07:34:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-17 07:34:24,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-17 07:34:24,692 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 671 flow. Second operand 4 states and 129 transitions. [2024-11-17 07:34:24,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1221 flow [2024-11-17 07:34:24,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:24,724 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 677 flow [2024-11-17 07:34:24,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-11-17 07:34:24,726 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-17 07:34:24,727 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 677 flow [2024-11-17 07:34:24,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 07:34:24,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:24,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:24,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:34:24,727 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:24,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash -904332623, now seen corresponding path program 1 times [2024-11-17 07:34:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423937781] [2024-11-17 07:34:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423937781] [2024-11-17 07:34:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423937781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:34:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004714630] [2024-11-17 07:34:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:24,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:34:24,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:24,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 677 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 07:34:24,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:24,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:24,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:25,591 INFO L124 PetriNetUnfolderBase]: 2862/6203 cut-off events. [2024-11-17 07:34:25,591 INFO L125 PetriNetUnfolderBase]: For 14383/14383 co-relation queries the response was YES. [2024-11-17 07:34:25,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18591 conditions, 6203 events. 2862/6203 cut-off events. For 14383/14383 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 43606 event pairs, 455 based on Foata normal form. 104/6300 useless extension candidates. Maximal degree in co-relation 15586. Up to 3054 conditions per place. [2024-11-17 07:34:25,634 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 85 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-11-17 07:34:25,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1102 flow [2024-11-17 07:34:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:34:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:34:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-11-17 07:34:25,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-17 07:34:25,636 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 677 flow. Second operand 7 states and 190 transitions. [2024-11-17 07:34:25,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1102 flow [2024-11-17 07:34:25,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 1078 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:25,670 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 760 flow [2024-11-17 07:34:25,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=760, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-11-17 07:34:25,673 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2024-11-17 07:34:25,673 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 760 flow [2024-11-17 07:34:25,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 07:34:25,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:25,674 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:25,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:34:25,675 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:25,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:25,675 INFO L85 PathProgramCache]: Analyzing trace with hash -577520606, now seen corresponding path program 1 times [2024-11-17 07:34:25,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:25,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903789390] [2024-11-17 07:34:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:25,956 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 07:34:25,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:25,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903789390] [2024-11-17 07:34:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903789390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:25,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275572764] [2024-11-17 07:34:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:25,959 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 07:34:25,961 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 07:34:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:26,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:34:26,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:26,372 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 07:34:26,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:26,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275572764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:26,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:26,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-17 07:34:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269241667] [2024-11-17 07:34:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:26,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:34:26,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:26,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 07:34:26,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:26,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:27,003 INFO L124 PetriNetUnfolderBase]: 2819/6180 cut-off events. [2024-11-17 07:34:27,003 INFO L125 PetriNetUnfolderBase]: For 17669/17669 co-relation queries the response was YES. [2024-11-17 07:34:27,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 6180 events. 2819/6180 cut-off events. For 17669/17669 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 43878 event pairs, 651 based on Foata normal form. 114/6285 useless extension candidates. Maximal degree in co-relation 16205. Up to 2849 conditions per place. [2024-11-17 07:34:27,038 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 87 selfloop transitions, 28 changer transitions 8/136 dead transitions. [2024-11-17 07:34:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1238 flow [2024-11-17 07:34:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:34:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:34:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-11-17 07:34:27,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-17 07:34:27,040 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 760 flow. Second operand 7 states and 190 transitions. [2024-11-17 07:34:27,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1238 flow [2024-11-17 07:34:27,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1219 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:27,071 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 884 flow [2024-11-17 07:34:27,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-11-17 07:34:27,071 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2024-11-17 07:34:27,072 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 884 flow [2024-11-17 07:34:27,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 07:34:27,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:27,072 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:27,092 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 07:34:27,272 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,SelfDestructingSolverStorable13 [2024-11-17 07:34:27,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 964764064, now seen corresponding path program 2 times [2024-11-17 07:34:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584130508] [2024-11-17 07:34:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:34:27,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584130508] [2024-11-17 07:34:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584130508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019113102] [2024-11-17 07:34:27,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:27,606 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 07:34:27,607 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 07:34:27,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:27,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:27,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:34:27,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:27,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019113102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:28,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:28,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-17 07:34:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843096552] [2024-11-17 07:34:28,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:28,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:34:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:28,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:34:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:34:28,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 884 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 07:34:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:28,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:28,998 INFO L124 PetriNetUnfolderBase]: 3024/6683 cut-off events. [2024-11-17 07:34:28,998 INFO L125 PetriNetUnfolderBase]: For 24706/24706 co-relation queries the response was YES. [2024-11-17 07:34:29,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21343 conditions, 6683 events. 3024/6683 cut-off events. For 24706/24706 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 46860 event pairs, 483 based on Foata normal form. 68/6734 useless extension candidates. Maximal degree in co-relation 18907. Up to 1421 conditions per place. [2024-11-17 07:34:29,047 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 185 selfloop transitions, 52 changer transitions 0/250 dead transitions. [2024-11-17 07:34:29,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 250 transitions, 2257 flow [2024-11-17 07:34:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:34:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:34:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 419 transitions. [2024-11-17 07:34:29,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172839506172839 [2024-11-17 07:34:29,050 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 884 flow. Second operand 15 states and 419 transitions. [2024-11-17 07:34:29,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 250 transitions, 2257 flow [2024-11-17 07:34:29,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 250 transitions, 2240 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:29,099 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1354 flow [2024-11-17 07:34:29,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1354, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-11-17 07:34:29,100 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-11-17 07:34:29,101 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1354 flow [2024-11-17 07:34:29,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 07:34:29,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:29,101 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-17 07:34:29,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:29,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:34:29,302 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:29,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1790637716, now seen corresponding path program 2 times [2024-11-17 07:34:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653314411] [2024-11-17 07:34:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653314411] [2024-11-17 07:34:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653314411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903663567] [2024-11-17 07:34:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:29,760 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 07:34:29,761 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 07:34:30,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:30,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:30,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 07:34:30,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:30,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:30,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903663567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:30,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:30,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-17 07:34:30,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492576936] [2024-11-17 07:34:30,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:30,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:34:30,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:34:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:34:30,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 07:34:30,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1354 flow. Second operand has 24 states, 24 states have (on average 22.541666666666668) internal successors, (541), 24 states have internal predecessors, (541), 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 07:34:30,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:30,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 07:34:30,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:32,113 INFO L124 PetriNetUnfolderBase]: 5288/11747 cut-off events. [2024-11-17 07:34:32,114 INFO L125 PetriNetUnfolderBase]: For 55756/55756 co-relation queries the response was YES. [2024-11-17 07:34:32,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38708 conditions, 11747 events. 5288/11747 cut-off events. For 55756/55756 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 81837 event pairs, 1005 based on Foata normal form. 234/11966 useless extension candidates. Maximal degree in co-relation 31147. Up to 2603 conditions per place. [2024-11-17 07:34:32,214 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 357 selfloop transitions, 76 changer transitions 0/446 dead transitions. [2024-11-17 07:34:32,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 446 transitions, 4257 flow [2024-11-17 07:34:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:34:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:34:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 769 transitions. [2024-11-17 07:34:32,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933641975308642 [2024-11-17 07:34:32,217 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1354 flow. Second operand 24 states and 769 transitions. [2024-11-17 07:34:32,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 446 transitions, 4257 flow [2024-11-17 07:34:32,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 446 transitions, 4233 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:32,308 INFO L231 Difference]: Finished difference. Result has 146 places, 152 transitions, 2185 flow [2024-11-17 07:34:32,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2185, PETRI_PLACES=146, PETRI_TRANSITIONS=152} [2024-11-17 07:34:32,309 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2024-11-17 07:34:32,309 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 152 transitions, 2185 flow [2024-11-17 07:34:32,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.541666666666668) internal successors, (541), 24 states have internal predecessors, (541), 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 07:34:32,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:32,309 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:32,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:32,510 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:32,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:32,511 INFO L85 PathProgramCache]: Analyzing trace with hash -554536854, now seen corresponding path program 3 times [2024-11-17 07:34:32,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:32,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151553528] [2024-11-17 07:34:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:32,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151553528] [2024-11-17 07:34:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151553528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055938335] [2024-11-17 07:34:33,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:34:33,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:33,095 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 07:34:33,097 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 07:34:33,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-17 07:34:33,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:33,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 07:34:33,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:33,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055938335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:33,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:33,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-17 07:34:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823746622] [2024-11-17 07:34:33,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:33,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:34:33,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:34:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:34:33,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:33,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 152 transitions, 2185 flow. Second operand has 22 states, 22 states have (on average 21.09090909090909) internal successors, (464), 22 states have internal predecessors, (464), 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 07:34:33,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:33,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:33,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:36,662 INFO L124 PetriNetUnfolderBase]: 7243/15870 cut-off events. [2024-11-17 07:34:36,662 INFO L125 PetriNetUnfolderBase]: For 90790/90794 co-relation queries the response was YES. [2024-11-17 07:34:36,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54281 conditions, 15870 events. 7243/15870 cut-off events. For 90790/90794 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 117022 event pairs, 767 based on Foata normal form. 108/15965 useless extension candidates. Maximal degree in co-relation 51381. Up to 2506 conditions per place. [2024-11-17 07:34:36,835 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 307 selfloop transitions, 141 changer transitions 0/461 dead transitions. [2024-11-17 07:34:36,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 461 transitions, 5138 flow [2024-11-17 07:34:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 07:34:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 07:34:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 725 transitions. [2024-11-17 07:34:36,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163817663817664 [2024-11-17 07:34:36,840 INFO L175 Difference]: Start difference. First operand has 146 places, 152 transitions, 2185 flow. Second operand 26 states and 725 transitions. [2024-11-17 07:34:36,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 461 transitions, 5138 flow [2024-11-17 07:34:37,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 461 transitions, 5018 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-17 07:34:37,044 INFO L231 Difference]: Finished difference. Result has 174 places, 208 transitions, 3447 flow [2024-11-17 07:34:37,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3447, PETRI_PLACES=174, PETRI_TRANSITIONS=208} [2024-11-17 07:34:37,044 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 124 predicate places. [2024-11-17 07:34:37,045 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 208 transitions, 3447 flow [2024-11-17 07:34:37,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.09090909090909) internal successors, (464), 22 states have internal predecessors, (464), 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 07:34:37,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:37,045 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:37,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:34:37,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 07:34:37,246 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:37,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:37,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2084353114, now seen corresponding path program 4 times [2024-11-17 07:34:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967961956] [2024-11-17 07:34:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:38,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967961956] [2024-11-17 07:34:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967961956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088693290] [2024-11-17 07:34:38,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:34:38,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:38,052 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 07:34:38,053 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 07:34:38,362 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:34:38,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:38,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 07:34:38,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:38,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:34:38,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088693290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:38,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:38,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-17 07:34:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931626754] [2024-11-17 07:34:38,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:38,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-17 07:34:38,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-17 07:34:38,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-11-17 07:34:38,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 07:34:38,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 208 transitions, 3447 flow. Second operand has 30 states, 30 states have (on average 21.066666666666666) internal successors, (632), 30 states have internal predecessors, (632), 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 07:34:38,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:38,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 07:34:38,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:43,173 INFO L124 PetriNetUnfolderBase]: 10036/21933 cut-off events. [2024-11-17 07:34:43,173 INFO L125 PetriNetUnfolderBase]: For 158050/158054 co-relation queries the response was YES. [2024-11-17 07:34:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77603 conditions, 21933 events. 10036/21933 cut-off events. For 158050/158054 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 169483 event pairs, 971 based on Foata normal form. 218/22132 useless extension candidates. Maximal degree in co-relation 76203. Up to 3481 conditions per place. [2024-11-17 07:34:43,485 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 420 selfloop transitions, 222 changer transitions 0/655 dead transitions. [2024-11-17 07:34:43,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 655 transitions, 7784 flow [2024-11-17 07:34:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-17 07:34:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-17 07:34:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1030 transitions. [2024-11-17 07:34:43,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155155155155156 [2024-11-17 07:34:43,488 INFO L175 Difference]: Start difference. First operand has 174 places, 208 transitions, 3447 flow. Second operand 37 states and 1030 transitions. [2024-11-17 07:34:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 655 transitions, 7784 flow [2024-11-17 07:34:43,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 655 transitions, 7474 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-17 07:34:43,870 INFO L231 Difference]: Finished difference. Result has 212 places, 283 transitions, 5142 flow [2024-11-17 07:34:43,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5142, PETRI_PLACES=212, PETRI_TRANSITIONS=283} [2024-11-17 07:34:43,871 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 162 predicate places. [2024-11-17 07:34:43,871 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 283 transitions, 5142 flow [2024-11-17 07:34:43,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 21.066666666666666) internal successors, (632), 30 states have internal predecessors, (632), 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 07:34:43,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:43,872 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:43,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:44,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:34:44,072 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:44,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1148080950, now seen corresponding path program 5 times [2024-11-17 07:34:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:44,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150898463] [2024-11-17 07:34:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat