./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:39:34,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:39:34,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:39:34,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:39:34,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:39:34,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:39:34,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:39:34,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:39:34,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:39:34,770 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:39:34,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:39:34,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:39:34,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:39:34,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:39:34,776 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:39:34,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:39:34,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:39:34,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:39:34,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:39:34,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:39:34,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:39:34,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:39:34,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:39:34,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:39:34,778 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:39:34,779 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:39:34,779 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:39:34,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:39:34,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:39:34,779 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:39:34,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:39:34,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:39:34,780 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:39:34,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:39:34,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:34,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:39:34,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:39:34,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:39:34,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:39:34,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:39:34,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:39:34,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:39:34,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:39:34,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:39:34,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2024-11-23 01:39:35,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:39:35,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:39:35,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:39:35,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:39:35,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:39:35,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longer.i [2024-11-23 01:39:36,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:39:36,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:39:36,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2024-11-23 01:39:36,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e09728a5/da69701ebcf0402b91084aa7269b3a39/FLAGe7b2375f3 [2024-11-23 01:39:36,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e09728a5/da69701ebcf0402b91084aa7269b3a39 [2024-11-23 01:39:36,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:39:36,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:39:36,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:36,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:39:36,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:39:36,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:36" (1/1) ... [2024-11-23 01:39:36,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219d05b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:36, skipping insertion in model container [2024-11-23 01:39:36,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:36" (1/1) ... [2024-11-23 01:39:36,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:39:37,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:37,391 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:39:37,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:37,549 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:39:37,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37 WrapperNode [2024-11-23 01:39:37,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:37,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:37,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:39:37,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:39:37,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,689 INFO L138 Inliner]: procedures = 274, calls = 859, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1064 [2024-11-23 01:39:37,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:37,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:39:37,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:39:37,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:39:37,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,760 INFO L175 MemorySlicer]: Split 844 memory accesses to 4 slices as follows [434, 2, 5, 403]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [403, 2, 5, 400]. The 16 writes are split as follows [14, 0, 0, 2]. [2024-11-23 01:39:37,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:39:37,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:39:37,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:39:37,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:39:37,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (1/1) ... [2024-11-23 01:39:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:37,876 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) [2024-11-23 01:39:37,878 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 [2024-11-23 01:39:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-23 01:39:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-23 01:39:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-23 01:39:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-23 01:39:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:39:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:39:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:39:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:39:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:39:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:39:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:39:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:39:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:39:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:39:37,931 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:39:38,102 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:39:38,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:39:39,302 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:39:39,302 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:39:46,560 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:39:46,561 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 01:39:46,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:46 BoogieIcfgContainer [2024-11-23 01:39:46,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:39:46,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:39:46,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:39:46,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:39:46,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:36" (1/3) ... [2024-11-23 01:39:46,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6252052f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:46, skipping insertion in model container [2024-11-23 01:39:46,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:37" (2/3) ... [2024-11-23 01:39:46,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6252052f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:46, skipping insertion in model container [2024-11-23 01:39:46,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:46" (3/3) ... [2024-11-23 01:39:46,571 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2024-11-23 01:39:46,589 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:39:46,590 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-23 01:39:46,590 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:39:46,712 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:39:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-11-23 01:39:46,844 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-11-23 01:39:46,844 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:39:46,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-23 01:39:46,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-11-23 01:39:46,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-11-23 01:39:46,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:39:46,873 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;@2b11fa8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:39:46,874 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-23 01:39:47,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:39:47,091 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:39:47,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:39:47,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:47,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:39:47,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:47,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:47,098 INFO L85 PathProgramCache]: Analyzing trace with hash -445045891, now seen corresponding path program 1 times [2024-11-23 01:39:47,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:47,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810693952] [2024-11-23 01:39:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810693952] [2024-11-23 01:39:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810693952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:48,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:48,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581180577] [2024-11-23 01:39:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:48,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:48,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:39:48,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-23 01:39:48,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:48,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:39:48,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:49,710 INFO L124 PetriNetUnfolderBase]: 1233/2525 cut-off events. [2024-11-23 01:39:49,711 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-23 01:39:49,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2525 events. 1233/2525 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15719 event pairs, 205 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 4434. Up to 1608 conditions per place. [2024-11-23 01:39:49,739 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-11-23 01:39:49,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 391 flow [2024-11-23 01:39:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-23 01:39:49,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295180722891566 [2024-11-23 01:39:49,754 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 4 states and 209 transitions. [2024-11-23 01:39:49,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 391 flow [2024-11-23 01:39:49,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:39:49,762 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 202 flow [2024-11-23 01:39:49,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-11-23 01:39:49,768 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-23 01:39:49,768 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 202 flow [2024-11-23 01:39:49,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-23 01:39:49,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:49,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:49,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:39:49,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:49,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash -911518375, now seen corresponding path program 1 times [2024-11-23 01:39:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210917961] [2024-11-23 01:39:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:50,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210917961] [2024-11-23 01:39:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210917961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760704924] [2024-11-23 01:39:50,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:50,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:50,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:50,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:50,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:39:50,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-23 01:39:50,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:50,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:39:50,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:51,890 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-11-23 01:39:51,890 INFO L125 PetriNetUnfolderBase]: For 452/455 co-relation queries the response was YES. [2024-11-23 01:39:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2581 events. 1242/2581 cut-off events. For 452/455 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16541 event pairs, 264 based on Foata normal form. 38/2287 useless extension candidates. Maximal degree in co-relation 4354. Up to 1757 conditions per place. [2024-11-23 01:39:51,909 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-11-23 01:39:51,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 456 flow [2024-11-23 01:39:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:39:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:39:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-23 01:39:51,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-23 01:39:51,913 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 202 flow. Second operand 5 states and 249 transitions. [2024-11-23 01:39:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 456 flow [2024-11-23 01:39:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:51,920 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 219 flow [2024-11-23 01:39:51,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-23 01:39:51,922 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-23 01:39:51,923 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 219 flow [2024-11-23 01:39:51,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-23 01:39:51,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:51,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:51,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:39:51,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:51,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 204245500, now seen corresponding path program 1 times [2024-11-23 01:39:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759353542] [2024-11-23 01:39:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759353542] [2024-11-23 01:39:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759353542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095269554] [2024-11-23 01:39:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:52,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:39:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:39:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:39:52,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:39:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-23 01:39:52,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:52,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:39:52,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:53,869 INFO L124 PetriNetUnfolderBase]: 1322/2691 cut-off events. [2024-11-23 01:39:53,869 INFO L125 PetriNetUnfolderBase]: For 528/544 co-relation queries the response was YES. [2024-11-23 01:39:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 2691 events. 1322/2691 cut-off events. For 528/544 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17156 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4657. Up to 1803 conditions per place. [2024-11-23 01:39:53,890 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-11-23 01:39:53,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 585 flow [2024-11-23 01:39:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:39:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:39:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-23 01:39:53,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-11-23 01:39:53,893 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 219 flow. Second operand 7 states and 340 transitions. [2024-11-23 01:39:53,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 585 flow [2024-11-23 01:39:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 01:39:53,901 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 274 flow [2024-11-23 01:39:53,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-23 01:39:53,903 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-23 01:39:53,903 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 274 flow [2024-11-23 01:39:53,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-23 01:39:53,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:53,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:53,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:39:53,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:53,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2083930802, now seen corresponding path program 1 times [2024-11-23 01:39:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033570997] [2024-11-23 01:39:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033570997] [2024-11-23 01:39:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033570997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666324556] [2024-11-23 01:39:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:39:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:39:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:39:54,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-23 01:39:54,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:54,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:54,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-23 01:39:54,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:54,848 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-11-23 01:39:54,848 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2024-11-23 01:39:54,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 2371 events. 1023/2371 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13928 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4332. Up to 884 conditions per place. [2024-11-23 01:39:54,867 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-23 01:39:54,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 370 flow [2024-11-23 01:39:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:39:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:39:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-11-23 01:39:54,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-11-23 01:39:54,869 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 274 flow. Second operand 3 states and 175 transitions. [2024-11-23 01:39:54,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 370 flow [2024-11-23 01:39:54,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-23 01:39:54,874 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 167 flow [2024-11-23 01:39:54,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-23 01:39:54,877 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-11-23 01:39:54,877 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 167 flow [2024-11-23 01:39:54,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:54,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:54,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:54,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:39:54,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:54,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1202786229, now seen corresponding path program 1 times [2024-11-23 01:39:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986932287] [2024-11-23 01:39:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986932287] [2024-11-23 01:39:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986932287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588462471] [2024-11-23 01:39:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:55,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:55,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-23 01:39:55,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-23 01:39:55,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:55,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-23 01:39:55,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:55,930 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-23 01:39:55,931 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-23 01:39:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27021 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-11-23 01:39:55,962 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-11-23 01:39:55,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 550 flow [2024-11-23 01:39:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-23 01:39:55,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-11-23 01:39:55,964 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-11-23 01:39:55,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 550 flow [2024-11-23 01:39:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:55,969 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 188 flow [2024-11-23 01:39:55,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-23 01:39:55,970 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-11-23 01:39:55,972 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 188 flow [2024-11-23 01:39:55,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-23 01:39:55,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:55,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:55,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:39:55,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:55,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1230628010, now seen corresponding path program 1 times [2024-11-23 01:39:55,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:55,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821050852] [2024-11-23 01:39:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:55,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:56,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:56,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821050852] [2024-11-23 01:39:56,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821050852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:56,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:39:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800437921] [2024-11-23 01:39:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:56,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:39:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:39:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:39:56,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-23 01:39:56,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-11-23 01:39:56,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:56,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-23 01:39:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:57,743 INFO L124 PetriNetUnfolderBase]: 1715/3860 cut-off events. [2024-11-23 01:39:57,744 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-11-23 01:39:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 3860 events. 1715/3860 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25067 event pairs, 279 based on Foata normal form. 0/3418 useless extension candidates. Maximal degree in co-relation 7356. Up to 2409 conditions per place. [2024-11-23 01:39:57,778 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 74 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-11-23 01:39:57,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 464 flow [2024-11-23 01:39:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:39:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:39:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-11-23 01:39:57,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-11-23 01:39:57,781 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 188 flow. Second operand 5 states and 251 transitions. [2024-11-23 01:39:57,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 464 flow [2024-11-23 01:39:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:57,784 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 194 flow [2024-11-23 01:39:57,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-11-23 01:39:57,786 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-23 01:39:57,787 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 194 flow [2024-11-23 01:39:57,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-11-23 01:39:57,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:57,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:57,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:39:57,788 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:57,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1503049579, now seen corresponding path program 1 times [2024-11-23 01:39:57,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:57,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141249248] [2024-11-23 01:39:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141249248] [2024-11-23 01:39:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141249248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310940629] [2024-11-23 01:39:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:58,031 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) [2024-11-23 01:39:58,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:39:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:58,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:39:58,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:58,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:39:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310940629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:58,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:39:58,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:39:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554982989] [2024-11-23 01:39:58,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:58,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:39:58,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:39:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:39:58,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-23 01:39:58,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-23 01:39:58,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:58,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-23 01:39:58,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:59,679 INFO L124 PetriNetUnfolderBase]: 1685/3664 cut-off events. [2024-11-23 01:39:59,680 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-23 01:39:59,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3664 events. 1685/3664 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23199 event pairs, 96 based on Foata normal form. 70/3382 useless extension candidates. Maximal degree in co-relation 7241. Up to 1080 conditions per place. [2024-11-23 01:39:59,707 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 162 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2024-11-23 01:39:59,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 820 flow [2024-11-23 01:39:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:39:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:39:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 367 transitions. [2024-11-23 01:39:59,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7369477911646586 [2024-11-23 01:39:59,710 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 194 flow. Second operand 6 states and 367 transitions. [2024-11-23 01:39:59,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 820 flow [2024-11-23 01:39:59,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 195 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:39:59,718 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 190 flow [2024-11-23 01:39:59,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-23 01:39:59,719 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-23 01:39:59,719 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 190 flow [2024-11-23 01:39:59,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-23 01:39:59,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:59,720 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] [2024-11-23 01:39:59,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:39:59,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:59,922 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:39:59,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 6552044, now seen corresponding path program 1 times [2024-11-23 01:39:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833741620] [2024-11-23 01:39:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:02,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:02,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833741620] [2024-11-23 01:40:02,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833741620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:02,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:02,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 01:40:02,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887020781] [2024-11-23 01:40:02,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:02,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:40:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:40:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:02,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-23 01:40:02,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-23 01:40:02,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-23 01:40:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:04,025 INFO L124 PetriNetUnfolderBase]: 2309/4784 cut-off events. [2024-11-23 01:40:04,025 INFO L125 PetriNetUnfolderBase]: For 2033/2109 co-relation queries the response was YES. [2024-11-23 01:40:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 4784 events. 2309/4784 cut-off events. For 2033/2109 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 30991 event pairs, 444 based on Foata normal form. 22/4274 useless extension candidates. Maximal degree in co-relation 9927. Up to 2448 conditions per place. [2024-11-23 01:40:04,068 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-23 01:40:04,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 167 transitions, 845 flow [2024-11-23 01:40:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:40:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:40:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-23 01:40:04,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2024-11-23 01:40:04,074 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 190 flow. Second operand 9 states and 378 transitions. [2024-11-23 01:40:04,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 167 transitions, 845 flow [2024-11-23 01:40:04,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 167 transitions, 805 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:04,087 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 222 flow [2024-11-23 01:40:04,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-23 01:40:04,089 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-11-23 01:40:04,090 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 222 flow [2024-11-23 01:40:04,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-23 01:40:04,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:04,091 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:04,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:40:04,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:04,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -650100888, now seen corresponding path program 1 times [2024-11-23 01:40:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178176837] [2024-11-23 01:40:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:40:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178176837] [2024-11-23 01:40:04,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178176837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:04,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:04,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975876767] [2024-11-23 01:40:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:04,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:04,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:04,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-23 01:40:04,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-23 01:40:04,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:04,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-23 01:40:04,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:05,244 INFO L124 PetriNetUnfolderBase]: 1995/4229 cut-off events. [2024-11-23 01:40:05,245 INFO L125 PetriNetUnfolderBase]: For 1301/1355 co-relation queries the response was YES. [2024-11-23 01:40:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 4229 events. 1995/4229 cut-off events. For 1301/1355 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27459 event pairs, 349 based on Foata normal form. 83/3998 useless extension candidates. Maximal degree in co-relation 8835. Up to 1995 conditions per place. [2024-11-23 01:40:05,271 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 98 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-23 01:40:05,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 612 flow [2024-11-23 01:40:05,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-23 01:40:05,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-11-23 01:40:05,273 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 222 flow. Second operand 4 states and 232 transitions. [2024-11-23 01:40:05,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 612 flow [2024-11-23 01:40:05,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 586 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:05,282 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 222 flow [2024-11-23 01:40:05,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-11-23 01:40:05,284 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2024-11-23 01:40:05,284 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 222 flow [2024-11-23 01:40:05,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-23 01:40:05,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:05,285 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] [2024-11-23 01:40:05,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:40:05,285 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:05,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 203115749, now seen corresponding path program 1 times [2024-11-23 01:40:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:05,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243185276] [2024-11-23 01:40:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:07,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243185276] [2024-11-23 01:40:07,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243185276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:07,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 01:40:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594921966] [2024-11-23 01:40:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:07,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:40:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:07,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:40:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:08,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-23 01:40:08,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-23 01:40:08,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:08,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-23 01:40:08,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:09,356 INFO L124 PetriNetUnfolderBase]: 2223/4634 cut-off events. [2024-11-23 01:40:09,356 INFO L125 PetriNetUnfolderBase]: For 2783/2783 co-relation queries the response was YES. [2024-11-23 01:40:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 4634 events. 2223/4634 cut-off events. For 2783/2783 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30242 event pairs, 444 based on Foata normal form. 22/4239 useless extension candidates. Maximal degree in co-relation 10207. Up to 2448 conditions per place. [2024-11-23 01:40:09,381 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 129 selfloop transitions, 8 changer transitions 2/164 dead transitions. [2024-11-23 01:40:09,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 164 transitions, 889 flow [2024-11-23 01:40:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:40:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:40:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-11-23 01:40:09,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-11-23 01:40:09,385 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 222 flow. Second operand 9 states and 375 transitions. [2024-11-23 01:40:09,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 164 transitions, 889 flow [2024-11-23 01:40:09,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 164 transitions, 829 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:09,390 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 223 flow [2024-11-23 01:40:09,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-11-23 01:40:09,393 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-11-23 01:40:09,393 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 223 flow [2024-11-23 01:40:09,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-23 01:40:09,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:09,393 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] [2024-11-23 01:40:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:40:09,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:09,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2001591535, now seen corresponding path program 1 times [2024-11-23 01:40:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004677563] [2024-11-23 01:40:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004677563] [2024-11-23 01:40:09,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004677563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:09,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:09,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:09,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785933433] [2024-11-23 01:40:09,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:09,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:09,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:09,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:40:09,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-23 01:40:09,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:09,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:40:09,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:10,539 INFO L124 PetriNetUnfolderBase]: 2829/5800 cut-off events. [2024-11-23 01:40:10,539 INFO L125 PetriNetUnfolderBase]: For 2554/2564 co-relation queries the response was YES. [2024-11-23 01:40:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12686 conditions, 5800 events. 2829/5800 cut-off events. For 2554/2564 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39829 event pairs, 1541 based on Foata normal form. 144/5553 useless extension candidates. Maximal degree in co-relation 12676. Up to 3623 conditions per place. [2024-11-23 01:40:10,570 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 92 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-23 01:40:10,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 570 flow [2024-11-23 01:40:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-23 01:40:10,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6596385542168675 [2024-11-23 01:40:10,572 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 223 flow. Second operand 4 states and 219 transitions. [2024-11-23 01:40:10,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 570 flow [2024-11-23 01:40:10,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 120 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 01:40:10,578 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 239 flow [2024-11-23 01:40:10,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-11-23 01:40:10,578 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-23 01:40:10,578 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 239 flow [2024-11-23 01:40:10,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-23 01:40:10,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:10,579 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] [2024-11-23 01:40:10,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:40:10,579 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:10,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1920782890, now seen corresponding path program 1 times [2024-11-23 01:40:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754135747] [2024-11-23 01:40:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754135747] [2024-11-23 01:40:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754135747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 01:40:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138763132] [2024-11-23 01:40:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:12,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:40:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:40:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:12,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:40:12,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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) [2024-11-23 01:40:12,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:12,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:40:12,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:13,191 INFO L124 PetriNetUnfolderBase]: 2804/5877 cut-off events. [2024-11-23 01:40:13,192 INFO L125 PetriNetUnfolderBase]: For 2557/2623 co-relation queries the response was YES. [2024-11-23 01:40:13,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13362 conditions, 5877 events. 2804/5877 cut-off events. For 2557/2623 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41010 event pairs, 518 based on Foata normal form. 44/5588 useless extension candidates. Maximal degree in co-relation 13349. Up to 2804 conditions per place. [2024-11-23 01:40:13,223 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 130 selfloop transitions, 13 changer transitions 2/172 dead transitions. [2024-11-23 01:40:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 172 transitions, 898 flow [2024-11-23 01:40:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:40:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:40:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 414 transitions. [2024-11-23 01:40:13,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-11-23 01:40:13,226 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 239 flow. Second operand 9 states and 414 transitions. [2024-11-23 01:40:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 172 transitions, 898 flow [2024-11-23 01:40:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:13,234 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 305 flow [2024-11-23 01:40:13,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-11-23 01:40:13,236 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-11-23 01:40:13,236 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 305 flow [2024-11-23 01:40:13,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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) [2024-11-23 01:40:13,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:13,237 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] [2024-11-23 01:40:13,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:40:13,238 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:13,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 979950757, now seen corresponding path program 1 times [2024-11-23 01:40:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:13,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722793495] [2024-11-23 01:40:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722793495] [2024-11-23 01:40:13,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722793495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415465063] [2024-11-23 01:40:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:13,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:13,443 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) [2024-11-23 01:40:13,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:40:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:13,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:40:13,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:13,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:40:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415465063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:40:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-23 01:40:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37286750] [2024-11-23 01:40:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:40:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:40:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:40:13,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-23 01:40:13,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-23 01:40:13,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:13,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-23 01:40:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:14,557 INFO L124 PetriNetUnfolderBase]: 3093/6084 cut-off events. [2024-11-23 01:40:14,557 INFO L125 PetriNetUnfolderBase]: For 3572/3606 co-relation queries the response was YES. [2024-11-23 01:40:14,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15236 conditions, 6084 events. 3093/6084 cut-off events. For 3572/3606 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 40465 event pairs, 680 based on Foata normal form. 150/5979 useless extension candidates. Maximal degree in co-relation 15221. Up to 3349 conditions per place. [2024-11-23 01:40:14,598 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 80 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-11-23 01:40:14,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 577 flow [2024-11-23 01:40:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-23 01:40:14,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843373493975904 [2024-11-23 01:40:14,599 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 305 flow. Second operand 4 states and 194 transitions. [2024-11-23 01:40:14,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 577 flow [2024-11-23 01:40:14,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 565 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:14,608 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 295 flow [2024-11-23 01:40:14,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-11-23 01:40:14,609 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-11-23 01:40:14,609 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 295 flow [2024-11-23 01:40:14,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-23 01:40:14,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:14,610 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:14,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:40:14,810 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,SelfDestructingSolverStorable12 [2024-11-23 01:40:14,810 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:14,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash 313704786, now seen corresponding path program 1 times [2024-11-23 01:40:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332520694] [2024-11-23 01:40:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:40:14,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:14,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332520694] [2024-11-23 01:40:14,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332520694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:14,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:14,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:14,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711969937] [2024-11-23 01:40:14,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:14,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:14,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:14,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:14,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-23 01:40:14,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-23 01:40:14,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:14,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-23 01:40:14,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:15,917 INFO L124 PetriNetUnfolderBase]: 2751/5632 cut-off events. [2024-11-23 01:40:15,917 INFO L125 PetriNetUnfolderBase]: For 3845/3865 co-relation queries the response was YES. [2024-11-23 01:40:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14102 conditions, 5632 events. 2751/5632 cut-off events. For 3845/3865 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 37917 event pairs, 724 based on Foata normal form. 150/5633 useless extension candidates. Maximal degree in co-relation 14086. Up to 2840 conditions per place. [2024-11-23 01:40:15,949 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 84 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-23 01:40:15,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 114 transitions, 599 flow [2024-11-23 01:40:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-23 01:40:15,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993975903614458 [2024-11-23 01:40:15,952 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 295 flow. Second operand 4 states and 199 transitions. [2024-11-23 01:40:15,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 114 transitions, 599 flow [2024-11-23 01:40:15,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 114 transitions, 589 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:40:15,965 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 297 flow [2024-11-23 01:40:15,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-11-23 01:40:15,966 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2024-11-23 01:40:15,966 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 297 flow [2024-11-23 01:40:15,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-23 01:40:15,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:15,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:15,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 01:40:15,967 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash -199779054, now seen corresponding path program 1 times [2024-11-23 01:40:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447019051] [2024-11-23 01:40:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447019051] [2024-11-23 01:40:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447019051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:16,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:16,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140702368] [2024-11-23 01:40:16,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:16,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:40:16,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:40:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:40:16,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-23 01:40:16,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-23 01:40:16,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:16,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-23 01:40:16,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:16,657 INFO L124 PetriNetUnfolderBase]: 1748/3956 cut-off events. [2024-11-23 01:40:16,657 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2024-11-23 01:40:16,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 3956 events. 1748/3956 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25783 event pairs, 514 based on Foata normal form. 170/4045 useless extension candidates. Maximal degree in co-relation 10250. Up to 1956 conditions per place. [2024-11-23 01:40:16,676 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 63 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-11-23 01:40:16,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 508 flow [2024-11-23 01:40:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:40:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:40:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-23 01:40:16,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-11-23 01:40:16,677 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 297 flow. Second operand 3 states and 165 transitions. [2024-11-23 01:40:16,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 508 flow [2024-11-23 01:40:16,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 489 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 01:40:16,687 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 285 flow [2024-11-23 01:40:16,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-11-23 01:40:16,688 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2024-11-23 01:40:16,688 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 285 flow [2024-11-23 01:40:16,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-23 01:40:16,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:16,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:16,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 01:40:16,689 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:16,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1511113568, now seen corresponding path program 1 times [2024-11-23 01:40:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231235472] [2024-11-23 01:40:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:16,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:17,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231235472] [2024-11-23 01:40:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231235472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:17,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 01:40:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532353858] [2024-11-23 01:40:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:17,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:40:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:40:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:40:17,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-11-23 01:40:17,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 29.8) internal successors, (298), 10 states have internal predecessors, (298), 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) [2024-11-23 01:40:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-11-23 01:40:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:19,416 INFO L124 PetriNetUnfolderBase]: 2803/5773 cut-off events. [2024-11-23 01:40:19,416 INFO L125 PetriNetUnfolderBase]: For 4773/4773 co-relation queries the response was YES. [2024-11-23 01:40:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15601 conditions, 5773 events. 2803/5773 cut-off events. For 4773/4773 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 39014 event pairs, 615 based on Foata normal form. 30/5631 useless extension candidates. Maximal degree in co-relation 15584. Up to 1939 conditions per place. [2024-11-23 01:40:19,440 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 155 selfloop transitions, 27 changer transitions 1/202 dead transitions. [2024-11-23 01:40:19,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 202 transitions, 1209 flow [2024-11-23 01:40:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:40:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:40:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 524 transitions. [2024-11-23 01:40:19,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2024-11-23 01:40:19,442 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 285 flow. Second operand 14 states and 524 transitions. [2024-11-23 01:40:19,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 202 transitions, 1209 flow [2024-11-23 01:40:19,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 202 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:19,454 INFO L231 Difference]: Finished difference. Result has 114 places, 89 transitions, 425 flow [2024-11-23 01:40:19,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=425, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2024-11-23 01:40:19,455 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-11-23 01:40:19,455 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 425 flow [2024-11-23 01:40:19,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.8) internal successors, (298), 10 states have internal predecessors, (298), 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) [2024-11-23 01:40:19,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:19,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:19,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 01:40:19,455 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:19,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:19,456 INFO L85 PathProgramCache]: Analyzing trace with hash 480376247, now seen corresponding path program 1 times [2024-11-23 01:40:19,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:19,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601366110] [2024-11-23 01:40:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:19,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601366110] [2024-11-23 01:40:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601366110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:20,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:40:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742749288] [2024-11-23 01:40:20,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:20,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:40:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:40:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:20,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:40:20,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 425 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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) [2024-11-23 01:40:20,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:20,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:40:20,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:21,832 INFO L124 PetriNetUnfolderBase]: 2321/5009 cut-off events. [2024-11-23 01:40:21,832 INFO L125 PetriNetUnfolderBase]: For 5549/5559 co-relation queries the response was YES. [2024-11-23 01:40:21,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14216 conditions, 5009 events. 2321/5009 cut-off events. For 5549/5559 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 33120 event pairs, 475 based on Foata normal form. 36/4919 useless extension candidates. Maximal degree in co-relation 14191. Up to 2679 conditions per place. [2024-11-23 01:40:21,849 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 116 selfloop transitions, 9 changer transitions 2/154 dead transitions. [2024-11-23 01:40:21,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 965 flow [2024-11-23 01:40:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:40:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:40:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 356 transitions. [2024-11-23 01:40:21,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536144578313253 [2024-11-23 01:40:21,851 INFO L175 Difference]: Start difference. First operand has 114 places, 89 transitions, 425 flow. Second operand 8 states and 356 transitions. [2024-11-23 01:40:21,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 965 flow [2024-11-23 01:40:21,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 154 transitions, 953 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:21,863 INFO L231 Difference]: Finished difference. Result has 120 places, 88 transitions, 424 flow [2024-11-23 01:40:21,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=120, PETRI_TRANSITIONS=88} [2024-11-23 01:40:21,864 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-11-23 01:40:21,864 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 88 transitions, 424 flow [2024-11-23 01:40:21,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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) [2024-11-23 01:40:21,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:21,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:21,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 01:40:21,865 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:21,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 868327764, now seen corresponding path program 1 times [2024-11-23 01:40:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387108953] [2024-11-23 01:40:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387108953] [2024-11-23 01:40:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387108953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 01:40:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043206536] [2024-11-23 01:40:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:23,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 01:40:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 01:40:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-23 01:40:23,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2024-11-23 01:40:23,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 88 transitions, 424 flow. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 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) [2024-11-23 01:40:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:23,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2024-11-23 01:40:23,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:25,690 INFO L124 PetriNetUnfolderBase]: 2759/5847 cut-off events. [2024-11-23 01:40:25,690 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-11-23 01:40:25,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16670 conditions, 5847 events. 2759/5847 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 38952 event pairs, 305 based on Foata normal form. 26/5763 useless extension candidates. Maximal degree in co-relation 16644. Up to 2571 conditions per place. [2024-11-23 01:40:25,722 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 172 selfloop transitions, 13 changer transitions 2/209 dead transitions. [2024-11-23 01:40:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 209 transitions, 1337 flow [2024-11-23 01:40:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 01:40:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 01:40:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 487 transitions. [2024-11-23 01:40:25,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45134383688600554 [2024-11-23 01:40:25,724 INFO L175 Difference]: Start difference. First operand has 120 places, 88 transitions, 424 flow. Second operand 13 states and 487 transitions. [2024-11-23 01:40:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 209 transitions, 1337 flow [2024-11-23 01:40:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 209 transitions, 1313 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-23 01:40:25,742 INFO L231 Difference]: Finished difference. Result has 129 places, 93 transitions, 477 flow [2024-11-23 01:40:25,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=477, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2024-11-23 01:40:25,742 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-11-23 01:40:25,743 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 477 flow [2024-11-23 01:40:25,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 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) [2024-11-23 01:40:25,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:25,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:25,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 01:40:25,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:25,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1036781495, now seen corresponding path program 1 times [2024-11-23 01:40:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132129868] [2024-11-23 01:40:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132129868] [2024-11-23 01:40:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132129868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:26,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 01:40:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516106161] [2024-11-23 01:40:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:26,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:40:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:26,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:40:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:40:26,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-23 01:40:26,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-11-23 01:40:26,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:26,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-23 01:40:26,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:27,232 INFO L124 PetriNetUnfolderBase]: 2535/5535 cut-off events. [2024-11-23 01:40:27,232 INFO L125 PetriNetUnfolderBase]: For 7315/7315 co-relation queries the response was YES. [2024-11-23 01:40:27,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 5535 events. 2535/5535 cut-off events. For 7315/7315 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 37868 event pairs, 1561 based on Foata normal form. 62/5501 useless extension candidates. Maximal degree in co-relation 15971. Up to 3066 conditions per place. [2024-11-23 01:40:27,260 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 62 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-11-23 01:40:27,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 107 transitions, 700 flow [2024-11-23 01:40:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:40:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:40:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-23 01:40:27,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2024-11-23 01:40:27,261 INFO L175 Difference]: Start difference. First operand has 129 places, 93 transitions, 477 flow. Second operand 5 states and 225 transitions. [2024-11-23 01:40:27,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 107 transitions, 700 flow [2024-11-23 01:40:27,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 107 transitions, 674 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-23 01:40:27,278 INFO L231 Difference]: Finished difference. Result has 122 places, 91 transitions, 478 flow [2024-11-23 01:40:27,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=122, PETRI_TRANSITIONS=91} [2024-11-23 01:40:27,279 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2024-11-23 01:40:27,279 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 91 transitions, 478 flow [2024-11-23 01:40:27,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-11-23 01:40:27,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:27,280 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, 1, 1, 1] [2024-11-23 01:40:27,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 01:40:27,280 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:27,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash -859910024, now seen corresponding path program 1 times [2024-11-23 01:40:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460349218] [2024-11-23 01:40:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:27,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460349218] [2024-11-23 01:40:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460349218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:27,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:27,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380464661] [2024-11-23 01:40:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:27,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:40:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:40:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:40:27,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-23 01:40:27,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 91 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:27,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:27,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-23 01:40:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:28,024 INFO L124 PetriNetUnfolderBase]: 2115/4725 cut-off events. [2024-11-23 01:40:28,025 INFO L125 PetriNetUnfolderBase]: For 6462/6472 co-relation queries the response was YES. [2024-11-23 01:40:28,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13415 conditions, 4725 events. 2115/4725 cut-off events. For 6462/6472 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 30504 event pairs, 1246 based on Foata normal form. 42/4675 useless extension candidates. Maximal degree in co-relation 13386. Up to 2301 conditions per place. [2024-11-23 01:40:28,052 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 77 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-23 01:40:28,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 107 transitions, 696 flow [2024-11-23 01:40:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:40:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:40:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-23 01:40:28,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-11-23 01:40:28,054 INFO L175 Difference]: Start difference. First operand has 122 places, 91 transitions, 478 flow. Second operand 3 states and 165 transitions. [2024-11-23 01:40:28,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 107 transitions, 696 flow [2024-11-23 01:40:28,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 107 transitions, 661 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:28,066 INFO L231 Difference]: Finished difference. Result has 120 places, 88 transitions, 429 flow [2024-11-23 01:40:28,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=120, PETRI_TRANSITIONS=88} [2024-11-23 01:40:28,066 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-11-23 01:40:28,066 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 88 transitions, 429 flow [2024-11-23 01:40:28,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:28,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:28,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:28,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 01:40:28,067 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:28,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash -233210274, now seen corresponding path program 1 times [2024-11-23 01:40:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432629122] [2024-11-23 01:40:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432629122] [2024-11-23 01:40:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432629122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:40:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533941139] [2024-11-23 01:40:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:30,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:40:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:40:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:40:30,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-23 01:40:30,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 88 transitions, 429 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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) [2024-11-23 01:40:30,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:30,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-23 01:40:30,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:31,354 INFO L124 PetriNetUnfolderBase]: 2491/5312 cut-off events. [2024-11-23 01:40:31,354 INFO L125 PetriNetUnfolderBase]: For 5930/5932 co-relation queries the response was YES. [2024-11-23 01:40:31,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15068 conditions, 5312 events. 2491/5312 cut-off events. For 5930/5932 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 32593 event pairs, 295 based on Foata normal form. 0/5236 useless extension candidates. Maximal degree in co-relation 15038. Up to 1138 conditions per place. [2024-11-23 01:40:31,382 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 168 selfloop transitions, 16 changer transitions 12/221 dead transitions. [2024-11-23 01:40:31,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 221 transitions, 1411 flow [2024-11-23 01:40:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:40:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:40:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 619 transitions. [2024-11-23 01:40:31,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5327022375215146 [2024-11-23 01:40:31,384 INFO L175 Difference]: Start difference. First operand has 120 places, 88 transitions, 429 flow. Second operand 14 states and 619 transitions. [2024-11-23 01:40:31,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 221 transitions, 1411 flow [2024-11-23 01:40:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 221 transitions, 1399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:40:31,397 INFO L231 Difference]: Finished difference. Result has 135 places, 97 transitions, 523 flow [2024-11-23 01:40:31,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=523, PETRI_PLACES=135, PETRI_TRANSITIONS=97} [2024-11-23 01:40:31,398 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 58 predicate places. [2024-11-23 01:40:31,398 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 97 transitions, 523 flow [2024-11-23 01:40:31,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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) [2024-11-23 01:40:31,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:31,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:31,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 01:40:31,398 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:31,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1645292758, now seen corresponding path program 1 times [2024-11-23 01:40:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598451094] [2024-11-23 01:40:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598451094] [2024-11-23 01:40:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598451094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:33,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:40:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273702211] [2024-11-23 01:40:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:33,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:40:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:40:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:40:33,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-23 01:40:33,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 97 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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) [2024-11-23 01:40:33,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:33,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-23 01:40:33,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:34,469 INFO L124 PetriNetUnfolderBase]: 2444/5197 cut-off events. [2024-11-23 01:40:34,469 INFO L125 PetriNetUnfolderBase]: For 6733/6743 co-relation queries the response was YES. [2024-11-23 01:40:34,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15168 conditions, 5197 events. 2444/5197 cut-off events. For 6733/6743 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31930 event pairs, 493 based on Foata normal form. 26/5164 useless extension candidates. Maximal degree in co-relation 15135. Up to 1996 conditions per place. [2024-11-23 01:40:34,494 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 147 selfloop transitions, 13 changer transitions 16/201 dead transitions. [2024-11-23 01:40:34,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 201 transitions, 1335 flow [2024-11-23 01:40:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 01:40:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 01:40:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 497 transitions. [2024-11-23 01:40:34,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49899598393574296 [2024-11-23 01:40:34,496 INFO L175 Difference]: Start difference. First operand has 135 places, 97 transitions, 523 flow. Second operand 12 states and 497 transitions. [2024-11-23 01:40:34,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 201 transitions, 1335 flow [2024-11-23 01:40:34,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 201 transitions, 1321 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-23 01:40:34,514 INFO L231 Difference]: Finished difference. Result has 141 places, 97 transitions, 539 flow [2024-11-23 01:40:34,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=539, PETRI_PLACES=141, PETRI_TRANSITIONS=97} [2024-11-23 01:40:34,515 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-11-23 01:40:34,515 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 97 transitions, 539 flow [2024-11-23 01:40:34,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 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) [2024-11-23 01:40:34,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:34,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:34,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 01:40:34,516 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1922606262, now seen corresponding path program 1 times [2024-11-23 01:40:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639102870] [2024-11-23 01:40:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639102870] [2024-11-23 01:40:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639102870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894144731] [2024-11-23 01:40:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:36,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:36,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:36,595 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) [2024-11-23 01:40:36,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:40:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:36,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 01:40:36,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:36,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2024-11-23 01:40:37,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-23 01:40:37,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-23 01:40:37,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-23 01:40:37,363 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-23 01:40:37,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-23 01:40:37,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-23 01:40:37,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-23 01:40:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:37,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894144731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:38,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 28 [2024-11-23 01:40:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734084000] [2024-11-23 01:40:38,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:38,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 01:40:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 01:40:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2024-11-23 01:40:38,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-23 01:40:38,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 97 transitions, 539 flow. Second operand has 29 states, 29 states have (on average 35.241379310344826) internal successors, (1022), 29 states have internal predecessors, (1022), 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) [2024-11-23 01:40:38,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:38,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-23 01:40:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:40,097 INFO L124 PetriNetUnfolderBase]: 2093/4527 cut-off events. [2024-11-23 01:40:40,098 INFO L125 PetriNetUnfolderBase]: For 6078/6088 co-relation queries the response was YES. [2024-11-23 01:40:40,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 4527 events. 2093/4527 cut-off events. For 6078/6088 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 26026 event pairs, 437 based on Foata normal form. 26/4500 useless extension candidates. Maximal degree in co-relation 13317. Up to 1479 conditions per place. [2024-11-23 01:40:40,133 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 153 selfloop transitions, 16 changer transitions 18/214 dead transitions. [2024-11-23 01:40:40,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 214 transitions, 1419 flow [2024-11-23 01:40:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:40:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:40:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 596 transitions. [2024-11-23 01:40:40,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5129087779690189 [2024-11-23 01:40:40,136 INFO L175 Difference]: Start difference. First operand has 141 places, 97 transitions, 539 flow. Second operand 14 states and 596 transitions. [2024-11-23 01:40:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 214 transitions, 1419 flow [2024-11-23 01:40:40,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 214 transitions, 1393 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-23 01:40:40,155 INFO L231 Difference]: Finished difference. Result has 142 places, 94 transitions, 521 flow [2024-11-23 01:40:40,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=521, PETRI_PLACES=142, PETRI_TRANSITIONS=94} [2024-11-23 01:40:40,156 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 65 predicate places. [2024-11-23 01:40:40,156 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 94 transitions, 521 flow [2024-11-23 01:40:40,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 35.241379310344826) internal successors, (1022), 29 states have internal predecessors, (1022), 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) [2024-11-23 01:40:40,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:40,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:40,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:40:40,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:40,358 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-23 01:40:40,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -310053203, now seen corresponding path program 1 times [2024-11-23 01:40:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:40,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045386411] [2024-11-23 01:40:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:40,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:43,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:43,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045386411] [2024-11-23 01:40:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045386411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950409635] [2024-11-23 01:40:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:43,390 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) [2024-11-23 01:40:43,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:40:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:43,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-23 01:40:43,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:43,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2024-11-23 01:40:43,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 01:40:43,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 01:40:43,896 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:43,923 INFO L349 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2024-11-23 01:40:43,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 59