./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/reorder_2.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/reorder_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:39:49,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:39:49,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:39:49,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:39:49,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:39:49,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:39:49,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:39:49,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:39:49,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:39:49,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:39:49,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:39:49,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:39:49,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:39:49,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:39:49,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:39:49,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:39:49,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:39:49,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:39:49,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:39:49,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:39:49,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:39:49,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:39:49,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:39:49,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:39:49,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:39:49,651 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:39:49,651 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:39:49,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:39:49,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:39:49,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:39:49,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:39:49,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:39:49,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:39:49,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:39:49,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:49,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:39:49,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:39:49,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:39:49,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:39:49,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:39:49,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:39:49,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:39:49,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:39:49,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:39:49,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-11-23 01:39:49,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:39:49,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:39:49,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:39:49,870 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:39:49,871 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:39:49,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2.i [2024-11-23 01:39:51,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:39:51,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:39:51,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2024-11-23 01:39:51,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc4ef50e/fff9f3bd2c9b491e8ba2890230d29c33/FLAGa26fa445d [2024-11-23 01:39:51,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fc4ef50e/fff9f3bd2c9b491e8ba2890230d29c33 [2024-11-23 01:39:51,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:39:51,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:39:51,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:51,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:39:51,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:39:51,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b7cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51, skipping insertion in model container [2024-11-23 01:39:51,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:51,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:39:51,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:51,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:39:51,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:51,986 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:39:51,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51 WrapperNode [2024-11-23 01:39:51,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:51,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:51,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:39:51,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:39:51,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,035 INFO L138 Inliner]: procedures = 372, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2024-11-23 01:39:52,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:52,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:39:52,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:39:52,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:39:52,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,063 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-23 01:39:52,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:39:52,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:39:52,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:39:52,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:39:52,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (1/1) ... [2024-11-23 01:39:52,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:52,110 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 01:39:52,114 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 01:39:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 01:39:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 01:39:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-23 01:39:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:39:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-23 01:39:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:39:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:39:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:39:52,155 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 01:39:52,348 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:39:52,350 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:39:52,529 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:39:52,529 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:39:52,690 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:39:52,690 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:39:52,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:52 BoogieIcfgContainer [2024-11-23 01:39:52,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:39:52,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:39:52,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:39:52,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:39:52,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:51" (1/3) ... [2024-11-23 01:39:52,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f801ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:52, skipping insertion in model container [2024-11-23 01:39:52,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:51" (2/3) ... [2024-11-23 01:39:52,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f801ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:52, skipping insertion in model container [2024-11-23 01:39:52,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:52" (3/3) ... [2024-11-23 01:39:52,700 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-11-23 01:39:52,715 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:39:52,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-23 01:39:52,715 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:39:52,756 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 01:39:52,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 110 flow [2024-11-23 01:39:52,814 INFO L124 PetriNetUnfolderBase]: 8/100 cut-off events. [2024-11-23 01:39:52,815 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 01:39:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 100 events. 8/100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 364 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2024-11-23 01:39:52,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 110 flow [2024-11-23 01:39:52,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 108 flow [2024-11-23 01:39:52,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:39:52,833 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;@7f8cdc76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:39:52,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-23 01:39:52,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:39:52,841 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:39:52,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:39:52,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:52,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:39:52,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:52,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash 396467415, now seen corresponding path program 1 times [2024-11-23 01:39:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712933575] [2024-11-23 01:39:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:53,137 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 01:39:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712933575] [2024-11-23 01:39:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712933575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:53,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:53,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233786264] [2024-11-23 01:39:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:53,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:53,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:53,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-11-23 01:39:53,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 01:39:53,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:53,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-11-23 01:39:53,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:53,423 INFO L124 PetriNetUnfolderBase]: 73/269 cut-off events. [2024-11-23 01:39:53,424 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-23 01:39:53,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 269 events. 73/269 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1511 event pairs, 41 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 279. Up to 126 conditions per place. [2024-11-23 01:39:53,427 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 31 selfloop transitions, 9 changer transitions 2/60 dead transitions. [2024-11-23 01:39:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 236 flow [2024-11-23 01:39:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-23 01:39:53,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-23 01:39:53,438 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 108 flow. Second operand 4 states and 116 transitions. [2024-11-23 01:39:53,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 236 flow [2024-11-23 01:39:53,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:39:53,443 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 142 flow [2024-11-23 01:39:53,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-23 01:39:53,447 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-23 01:39:53,448 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 142 flow [2024-11-23 01:39:53,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 01:39:53,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:53,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:39:53,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:39:53,449 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:53,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -595005080, now seen corresponding path program 1 times [2024-11-23 01:39:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955553566] [2024-11-23 01:39:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:53,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:53,572 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 01:39:53,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:53,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955553566] [2024-11-23 01:39:53,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955553566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758363183] [2024-11-23 01:39:53,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:53,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:53,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:53,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-11-23 01:39:53,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:39:53,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:53,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-11-23 01:39:53,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:53,712 INFO L124 PetriNetUnfolderBase]: 71/252 cut-off events. [2024-11-23 01:39:53,712 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-23 01:39:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 252 events. 71/252 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1371 event pairs, 21 based on Foata normal form. 12/251 useless extension candidates. Maximal degree in co-relation 305. Up to 118 conditions per place. [2024-11-23 01:39:53,714 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 32 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-11-23 01:39:53,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 260 flow [2024-11-23 01:39:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-23 01:39:53,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-23 01:39:53,716 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 142 flow. Second operand 4 states and 115 transitions. [2024-11-23 01:39:53,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 260 flow [2024-11-23 01:39:53,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:53,720 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 154 flow [2024-11-23 01:39:53,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-23 01:39:53,720 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-23 01:39:53,721 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 154 flow [2024-11-23 01:39:53,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:39:53,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:53,722 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:53,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:39:53,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:53,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1085745, now seen corresponding path program 1 times [2024-11-23 01:39:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:53,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288327100] [2024-11-23 01:39:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:53,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:39:53,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:39:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:39:53,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:39:53,792 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:39:53,793 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-23 01:39:53,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-23 01:39:53,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-23 01:39:53,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-23 01:39:53,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-23 01:39:53,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-23 01:39:53,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-23 01:39:53,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-23 01:39:53,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-23 01:39:53,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-23 01:39:53,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:39:53,800 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-23 01:39:53,802 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:39:53,806 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 01:39:53,831 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-23 01:39:53,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 162 flow [2024-11-23 01:39:53,864 INFO L124 PetriNetUnfolderBase]: 57/387 cut-off events. [2024-11-23 01:39:53,866 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-23 01:39:53,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 387 events. 57/387 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2228 event pairs, 2 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 237. Up to 32 conditions per place. [2024-11-23 01:39:53,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 59 transitions, 162 flow [2024-11-23 01:39:53,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 160 flow [2024-11-23 01:39:53,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:39:53,871 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;@7f8cdc76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:39:53,872 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-23 01:39:53,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:39:53,874 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:39:53,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:39:53,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:53,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:39:53,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:53,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash 450871449, now seen corresponding path program 1 times [2024-11-23 01:39:53,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:53,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073232797] [2024-11-23 01:39:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:53,923 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 01:39:53,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073232797] [2024-11-23 01:39:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073232797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:53,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961142546] [2024-11-23 01:39:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:53,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:53,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:53,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:53,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 01:39:53,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:53,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:53,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:54,313 INFO L124 PetriNetUnfolderBase]: 1575/3507 cut-off events. [2024-11-23 01:39:54,314 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-11-23 01:39:54,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 3507 events. 1575/3507 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 29604 event pairs, 669 based on Foata normal form. 2/3058 useless extension candidates. Maximal degree in co-relation 2329. Up to 1361 conditions per place. [2024-11-23 01:39:54,333 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 53 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-11-23 01:39:54,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 364 flow [2024-11-23 01:39:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-23 01:39:54,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-11-23 01:39:54,340 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 160 flow. Second operand 4 states and 160 transitions. [2024-11-23 01:39:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 364 flow [2024-11-23 01:39:54,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:39:54,343 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 232 flow [2024-11-23 01:39:54,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-11-23 01:39:54,347 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-11-23 01:39:54,347 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 232 flow [2024-11-23 01:39:54,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 01:39:54,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:54,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:39:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:39:54,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:54,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1091259600, now seen corresponding path program 1 times [2024-11-23 01:39:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63576425] [2024-11-23 01:39:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:54,395 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 01:39:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63576425] [2024-11-23 01:39:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63576425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142989155] [2024-11-23 01:39:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:54,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:54,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:54,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 01:39:54,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:54,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:54,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:54,860 INFO L124 PetriNetUnfolderBase]: 1663/3567 cut-off events. [2024-11-23 01:39:54,860 INFO L125 PetriNetUnfolderBase]: For 912/912 co-relation queries the response was YES. [2024-11-23 01:39:54,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 3567 events. 1663/3567 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29856 event pairs, 697 based on Foata normal form. 28/3342 useless extension candidates. Maximal degree in co-relation 2629. Up to 1497 conditions per place. [2024-11-23 01:39:54,877 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 55 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-23 01:39:54,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 428 flow [2024-11-23 01:39:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-23 01:39:54,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-23 01:39:54,879 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 232 flow. Second operand 4 states and 162 transitions. [2024-11-23 01:39:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 428 flow [2024-11-23 01:39:54,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:39:54,882 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 268 flow [2024-11-23 01:39:54,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-23 01:39:54,883 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-11-23 01:39:54,883 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 268 flow [2024-11-23 01:39:54,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 01:39:54,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:54,884 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:54,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:39:54,884 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:54,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1717876919, now seen corresponding path program 1 times [2024-11-23 01:39:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909555318] [2024-11-23 01:39:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909555318] [2024-11-23 01:39:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909555318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812902730] [2024-11-23 01:39:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:54,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:54,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:54,962 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 01:39:54,964 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 01:39:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:55,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:39:55,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:55,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:39:55,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812902730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:55,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:39:55,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:39:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152693147] [2024-11-23 01:39:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:55,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:39:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:39:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:39:55,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 01:39:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:55,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:55,493 INFO L124 PetriNetUnfolderBase]: 1571/3470 cut-off events. [2024-11-23 01:39:55,493 INFO L125 PetriNetUnfolderBase]: For 1496/1496 co-relation queries the response was YES. [2024-11-23 01:39:55,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 3470 events. 1571/3470 cut-off events. For 1496/1496 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29204 event pairs, 329 based on Foata normal form. 4/3239 useless extension candidates. Maximal degree in co-relation 2751. Up to 1332 conditions per place. [2024-11-23 01:39:55,513 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 54 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-11-23 01:39:55,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 464 flow [2024-11-23 01:39:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:39:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:39:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-23 01:39:55,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-23 01:39:55,515 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 268 flow. Second operand 6 states and 210 transitions. [2024-11-23 01:39:55,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 464 flow [2024-11-23 01:39:55,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:55,522 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 278 flow [2024-11-23 01:39:55,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-11-23 01:39:55,524 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2024-11-23 01:39:55,525 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 278 flow [2024-11-23 01:39:55,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 01:39:55,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:55,525 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:55,536 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 01:39:55,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 01:39:55,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:55,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -634919061, now seen corresponding path program 1 times [2024-11-23 01:39:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962101236] [2024-11-23 01:39:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:55,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:55,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962101236] [2024-11-23 01:39:55,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962101236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:55,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018844328] [2024-11-23 01:39:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:55,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:55,811 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 01:39:55,816 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 01:39:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:55,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:39:55,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:55,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:39:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018844328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:39:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:39:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981724996] [2024-11-23 01:39:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:55,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:39:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:39:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:39:55,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:55,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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 01:39:55,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:55,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:56,309 INFO L124 PetriNetUnfolderBase]: 1615/3473 cut-off events. [2024-11-23 01:39:56,310 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-11-23 01:39:56,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 3473 events. 1615/3473 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28986 event pairs, 481 based on Foata normal form. 28/3276 useless extension candidates. Maximal degree in co-relation 2805. Up to 1304 conditions per place. [2024-11-23 01:39:56,329 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 60 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-23 01:39:56,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 498 flow [2024-11-23 01:39:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:39:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:39:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-11-23 01:39:56,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6101694915254238 [2024-11-23 01:39:56,331 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 278 flow. Second operand 6 states and 216 transitions. [2024-11-23 01:39:56,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 498 flow [2024-11-23 01:39:56,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 478 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 01:39:56,336 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 276 flow [2024-11-23 01:39:56,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-23 01:39:56,336 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-11-23 01:39:56,337 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 276 flow [2024-11-23 01:39:56,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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 01:39:56,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:56,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:39:56,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:39:56,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 01:39:56,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:56,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1714576488, now seen corresponding path program 1 times [2024-11-23 01:39:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:56,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803048786] [2024-11-23 01:39:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:56,609 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 01:39:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:56,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803048786] [2024-11-23 01:39:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803048786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389860309] [2024-11-23 01:39:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:56,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:56,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:56,615 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 01:39:56,621 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 01:39:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:56,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:39:56,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:56,719 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 01:39:56,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:56,766 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 01:39:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389860309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:56,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:39:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414279653] [2024-11-23 01:39:56,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:56,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:39:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:39:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:39:56,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:56,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 12 states have internal predecessors, (311), 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 01:39:56,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:56,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:56,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:57,246 INFO L124 PetriNetUnfolderBase]: 1567/3432 cut-off events. [2024-11-23 01:39:57,246 INFO L125 PetriNetUnfolderBase]: For 2265/2265 co-relation queries the response was YES. [2024-11-23 01:39:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7862 conditions, 3432 events. 1567/3432 cut-off events. For 2265/2265 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28455 event pairs, 320 based on Foata normal form. 4/3209 useless extension candidates. Maximal degree in co-relation 2790. Up to 1332 conditions per place. [2024-11-23 01:39:57,294 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 56 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-11-23 01:39:57,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 494 flow [2024-11-23 01:39:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:39:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:39:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-23 01:39:57,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5738498789346247 [2024-11-23 01:39:57,295 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 276 flow. Second operand 7 states and 237 transitions. [2024-11-23 01:39:57,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 494 flow [2024-11-23 01:39:57,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 466 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-23 01:39:57,302 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 278 flow [2024-11-23 01:39:57,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-11-23 01:39:57,303 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 16 predicate places. [2024-11-23 01:39:57,304 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 278 flow [2024-11-23 01:39:57,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 12 states have internal predecessors, (311), 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 01:39:57,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:57,304 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:57,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 01:39:57,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:57,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:57,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1792346030, now seen corresponding path program 1 times [2024-11-23 01:39:57,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355676862] [2024-11-23 01:39:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:57,580 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 01:39:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:57,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355676862] [2024-11-23 01:39:57,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355676862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:57,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957071412] [2024-11-23 01:39:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:57,586 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 01:39:57,600 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 01:39:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:57,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:39:57,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:57,693 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 01:39:57,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:57,731 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 01:39:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957071412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:57,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:57,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:39:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212385508] [2024-11-23 01:39:57,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:57,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:39:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:39:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:39:57,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-23 01:39:57,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 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 01:39:57,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:57,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-23 01:39:57,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:58,016 INFO L124 PetriNetUnfolderBase]: 1567/3400 cut-off events. [2024-11-23 01:39:58,017 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-11-23 01:39:58,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 3400 events. 1567/3400 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28282 event pairs, 295 based on Foata normal form. 28/3231 useless extension candidates. Maximal degree in co-relation 2755. Up to 1304 conditions per place. [2024-11-23 01:39:58,032 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 64 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-11-23 01:39:58,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 530 flow [2024-11-23 01:39:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:39:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:39:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-11-23 01:39:58,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-23 01:39:58,034 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 278 flow. Second operand 7 states and 245 transitions. [2024-11-23 01:39:58,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 530 flow [2024-11-23 01:39:58,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 502 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 01:39:58,037 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-11-23 01:39:58,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-23 01:39:58,038 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-11-23 01:39:58,038 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-11-23 01:39:58,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 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 01:39:58,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:58,039 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-23 01:39:58,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:39:58,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:58,240 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:58,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1559451297, now seen corresponding path program 1 times [2024-11-23 01:39:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:58,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424934405] [2024-11-23 01:39:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:39:58,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:39:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:39:58,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:39:58,274 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:39:58,274 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-23 01:39:58,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-23 01:39:58,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-23 01:39:58,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:39:58,281 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:58,282 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:39:58,284 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-23 01:39:58,303 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-23 01:39:58,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 218 flow [2024-11-23 01:39:58,369 INFO L124 PetriNetUnfolderBase]: 336/1466 cut-off events. [2024-11-23 01:39:58,369 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-11-23 01:39:58,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1466 events. 336/1466 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10430 event pairs, 52 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2024-11-23 01:39:58,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 73 transitions, 218 flow [2024-11-23 01:39:58,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 216 flow [2024-11-23 01:39:58,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:39:58,375 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;@7f8cdc76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:39:58,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-23 01:39:58,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:39:58,377 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:39:58,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:39:58,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:58,377 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:39:58,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:39:58,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 518635753, now seen corresponding path program 1 times [2024-11-23 01:39:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055124291] [2024-11-23 01:39:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:58,405 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 01:39:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:58,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055124291] [2024-11-23 01:39:58,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055124291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:58,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524530801] [2024-11-23 01:39:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:58,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:58,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:39:58,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:58,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:58,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:39:58,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:01,150 INFO L124 PetriNetUnfolderBase]: 21857/38845 cut-off events. [2024-11-23 01:40:01,151 INFO L125 PetriNetUnfolderBase]: For 5110/5110 co-relation queries the response was YES. [2024-11-23 01:40:01,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75258 conditions, 38845 events. 21857/38845 cut-off events. For 5110/5110 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 375982 event pairs, 9852 based on Foata normal form. 2/35204 useless extension candidates. Maximal degree in co-relation 22487. Up to 17821 conditions per place. [2024-11-23 01:40:01,395 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 67 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-11-23 01:40:01,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 472 flow [2024-11-23 01:40:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-23 01:40:01,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678082191780822 [2024-11-23 01:40:01,398 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 4 states and 198 transitions. [2024-11-23 01:40:01,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 472 flow [2024-11-23 01:40:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:40:01,403 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 288 flow [2024-11-23 01:40:01,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-23 01:40:01,404 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-23 01:40:01,406 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 288 flow [2024-11-23 01:40:01,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:01,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:01,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:40:01,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:40:01,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:01,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1103274632, now seen corresponding path program 1 times [2024-11-23 01:40:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616271646] [2024-11-23 01:40:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:01,449 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 01:40:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:01,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616271646] [2024-11-23 01:40:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616271646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:01,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519268977] [2024-11-23 01:40:01,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:01,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:01,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:01,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:01,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:01,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:01,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:05,183 INFO L124 PetriNetUnfolderBase]: 22713/39641 cut-off events. [2024-11-23 01:40:05,183 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-11-23 01:40:05,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82764 conditions, 39641 events. 22713/39641 cut-off events. For 9742/9742 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 380013 event pairs, 10081 based on Foata normal form. 60/37256 useless extension candidates. Maximal degree in co-relation 25155. Up to 19013 conditions per place. [2024-11-23 01:40:05,424 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 70 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-23 01:40:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 540 flow [2024-11-23 01:40:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-23 01:40:05,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6883561643835616 [2024-11-23 01:40:05,425 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 288 flow. Second operand 4 states and 201 transitions. [2024-11-23 01:40:05,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 540 flow [2024-11-23 01:40:05,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:40:05,430 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 324 flow [2024-11-23 01:40:05,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-23 01:40:05,431 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-23 01:40:05,431 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 324 flow [2024-11-23 01:40:05,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:05,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:05,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:05,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:40:05,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:05,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 408877385, now seen corresponding path program 1 times [2024-11-23 01:40:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615267992] [2024-11-23 01:40:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615267992] [2024-11-23 01:40:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615267992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337423500] [2024-11-23 01:40:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:05,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:05,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:05,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:40:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:05,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:40:05,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:05,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:40:05,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337423500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:05,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:40:05,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:40:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852941524] [2024-11-23 01:40:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:05,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:40:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:40:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:05,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:05,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 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 01:40:05,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:05,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:08,848 INFO L124 PetriNetUnfolderBase]: 21841/38750 cut-off events. [2024-11-23 01:40:08,848 INFO L125 PetriNetUnfolderBase]: For 14584/14584 co-relation queries the response was YES. [2024-11-23 01:40:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84450 conditions, 38750 events. 21841/38750 cut-off events. For 14584/14584 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 374225 event pairs, 4787 based on Foata normal form. 12/36471 useless extension candidates. Maximal degree in co-relation 25699. Up to 17653 conditions per place. [2024-11-23 01:40:09,142 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 70 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-11-23 01:40:09,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 580 flow [2024-11-23 01:40:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:40:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:40:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2024-11-23 01:40:09,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2024-11-23 01:40:09,144 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 324 flow. Second operand 6 states and 262 transitions. [2024-11-23 01:40:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 580 flow [2024-11-23 01:40:09,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:09,155 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 334 flow [2024-11-23 01:40:09,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-11-23 01:40:09,155 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-23 01:40:09,155 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 334 flow [2024-11-23 01:40:09,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 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 01:40:09,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:09,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:40:09,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:40:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 01:40:09,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:09,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -209702433, now seen corresponding path program 1 times [2024-11-23 01:40:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658524148] [2024-11-23 01:40:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:09,427 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 01:40:09,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658524148] [2024-11-23 01:40:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658524148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602189797] [2024-11-23 01:40:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:09,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:09,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:40:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:09,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:40:09,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:09,518 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 01:40:09,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:09,547 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 01:40:09,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602189797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:09,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:09,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:40:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021589332] [2024-11-23 01:40:09,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:09,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:40:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:40:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:40:09,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:09,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 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 01:40:09,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:09,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:09,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:13,002 INFO L124 PetriNetUnfolderBase]: 21825/38719 cut-off events. [2024-11-23 01:40:13,002 INFO L125 PetriNetUnfolderBase]: For 19249/19249 co-relation queries the response was YES. [2024-11-23 01:40:13,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85295 conditions, 38719 events. 21825/38719 cut-off events. For 19249/19249 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 376082 event pairs, 6283 based on Foata normal form. 12/36464 useless extension candidates. Maximal degree in co-relation 25993. Up to 17653 conditions per place. [2024-11-23 01:40:13,451 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 78 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-11-23 01:40:13,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 664 flow [2024-11-23 01:40:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:40:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:40:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2024-11-23 01:40:13,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-23 01:40:13,455 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 334 flow. Second operand 9 states and 365 transitions. [2024-11-23 01:40:13,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 664 flow [2024-11-23 01:40:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 632 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-23 01:40:13,468 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 360 flow [2024-11-23 01:40:13,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-23 01:40:13,469 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2024-11-23 01:40:13,469 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 360 flow [2024-11-23 01:40:13,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 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 01:40:13,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:13,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:13,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:40:13,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:13,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:13,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1014496338, now seen corresponding path program 1 times [2024-11-23 01:40:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788426107] [2024-11-23 01:40:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788426107] [2024-11-23 01:40:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788426107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360719132] [2024-11-23 01:40:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:13,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:13,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:13,734 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:13,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:40:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:13,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:40:13,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:13,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:40:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360719132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:13,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:40:13,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:40:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013019490] [2024-11-23 01:40:13,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:13,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:40:13,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:40:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:13,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:13,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 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 01:40:13,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:13,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:13,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:17,035 INFO L124 PetriNetUnfolderBase]: 22269/38888 cut-off events. [2024-11-23 01:40:17,036 INFO L125 PetriNetUnfolderBase]: For 19584/19584 co-relation queries the response was YES. [2024-11-23 01:40:17,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85905 conditions, 38888 events. 22269/38888 cut-off events. For 19584/19584 co-relation queries the response was YES. Maximal size of possible extension queue 1877. Compared 369567 event pairs, 4422 based on Foata normal form. 180/36803 useless extension candidates. Maximal degree in co-relation 26208. Up to 15201 conditions per place. [2024-11-23 01:40:17,278 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 81 selfloop transitions, 13 changer transitions 0/122 dead transitions. [2024-11-23 01:40:17,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 660 flow [2024-11-23 01:40:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:40:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:40:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2024-11-23 01:40:17,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2024-11-23 01:40:17,280 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 360 flow. Second operand 6 states and 271 transitions. [2024-11-23 01:40:17,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 660 flow [2024-11-23 01:40:17,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 630 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:17,300 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 352 flow [2024-11-23 01:40:17,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-23 01:40:17,301 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-23 01:40:17,301 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 352 flow [2024-11-23 01:40:17,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 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 01:40:17,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:17,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:17,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 01:40:17,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:17,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:17,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1384615918, now seen corresponding path program 1 times [2024-11-23 01:40:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717457671] [2024-11-23 01:40:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:17,566 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 01:40:17,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717457671] [2024-11-23 01:40:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717457671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114551977] [2024-11-23 01:40:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:17,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:17,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:17,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:40:17,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:40:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:17,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:40:17,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:17,676 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 01:40:17,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:17,713 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 01:40:17,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114551977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:17,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:40:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120324762] [2024-11-23 01:40:17,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:17,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:40:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:40:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:40:17,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:17,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 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 01:40:17,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:17,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:17,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:20,852 INFO L124 PetriNetUnfolderBase]: 21825/38264 cut-off events. [2024-11-23 01:40:20,852 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-11-23 01:40:20,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84841 conditions, 38264 events. 21825/38264 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 364552 event pairs, 4212 based on Foata normal form. 180/36359 useless extension candidates. Maximal degree in co-relation 25817. Up to 15201 conditions per place. [2024-11-23 01:40:21,060 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 98 selfloop transitions, 17 changer transitions 0/143 dead transitions. [2024-11-23 01:40:21,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 762 flow [2024-11-23 01:40:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:40:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:40:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 383 transitions. [2024-11-23 01:40:21,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829528158295282 [2024-11-23 01:40:21,062 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 352 flow. Second operand 9 states and 383 transitions. [2024-11-23 01:40:21,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 762 flow [2024-11-23 01:40:21,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 726 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-23 01:40:21,075 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 378 flow [2024-11-23 01:40:21,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=378, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-11-23 01:40:21,076 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-23 01:40:21,076 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 378 flow [2024-11-23 01:40:21,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 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 01:40:21,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:21,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:21,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:40:21,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 01:40:21,281 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:21,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1345305222, now seen corresponding path program 1 times [2024-11-23 01:40:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150485237] [2024-11-23 01:40:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:40:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150485237] [2024-11-23 01:40:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150485237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:21,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042946843] [2024-11-23 01:40:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:21,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:21,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:21,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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 01:40:21,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:21,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:21,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:24,561 INFO L124 PetriNetUnfolderBase]: 23397/39019 cut-off events. [2024-11-23 01:40:24,561 INFO L125 PetriNetUnfolderBase]: For 19473/19473 co-relation queries the response was YES. [2024-11-23 01:40:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88083 conditions, 39019 events. 23397/39019 cut-off events. For 19473/19473 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 355658 event pairs, 10958 based on Foata normal form. 922/38595 useless extension candidates. Maximal degree in co-relation 26408. Up to 20283 conditions per place. [2024-11-23 01:40:24,799 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 76 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-11-23 01:40:24,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 652 flow [2024-11-23 01:40:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-23 01:40:24,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2024-11-23 01:40:24,800 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 378 flow. Second operand 4 states and 203 transitions. [2024-11-23 01:40:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 652 flow [2024-11-23 01:40:24,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 618 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:24,815 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 392 flow [2024-11-23 01:40:24,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-11-23 01:40:24,815 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-23 01:40:24,816 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 392 flow [2024-11-23 01:40:24,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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 01:40:24,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:24,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:24,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 01:40:24,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:24,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1246143617, now seen corresponding path program 1 times [2024-11-23 01:40:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:24,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268800616] [2024-11-23 01:40:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:24,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:40:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268800616] [2024-11-23 01:40:24,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268800616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:24,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:24,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66602059] [2024-11-23 01:40:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:24,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:24,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:24,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:24,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-23 01:40:24,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 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 01:40:24,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:24,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-23 01:40:24,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:28,191 INFO L124 PetriNetUnfolderBase]: 23397/37689 cut-off events. [2024-11-23 01:40:28,192 INFO L125 PetriNetUnfolderBase]: For 21317/21317 co-relation queries the response was YES. [2024-11-23 01:40:28,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89864 conditions, 37689 events. 23397/37689 cut-off events. For 21317/21317 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 328855 event pairs, 11672 based on Foata normal form. 1330/38811 useless extension candidates. Maximal degree in co-relation 45203. Up to 20283 conditions per place. [2024-11-23 01:40:28,376 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 76 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-11-23 01:40:28,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 664 flow [2024-11-23 01:40:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-23 01:40:28,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2024-11-23 01:40:28,378 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 392 flow. Second operand 4 states and 203 transitions. [2024-11-23 01:40:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 664 flow [2024-11-23 01:40:28,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:28,418 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 428 flow [2024-11-23 01:40:28,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-11-23 01:40:28,419 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2024-11-23 01:40:28,419 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 428 flow [2024-11-23 01:40:28,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 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 01:40:28,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:28,419 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-23 01:40:28,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 01:40:28,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:28,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1549216016, now seen corresponding path program 1 times [2024-11-23 01:40:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:28,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551296451] [2024-11-23 01:40:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:40:28,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:40:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:40:28,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:40:28,449 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:40:28,449 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-23 01:40:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-23 01:40:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-23 01:40:28,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-23 01:40:28,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-23 01:40:28,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 01:40:28,450 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:28,451 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:40:28,451 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-23 01:40:28,475 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-11-23 01:40:28,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 278 flow [2024-11-23 01:40:28,871 INFO L124 PetriNetUnfolderBase]: 1817/5929 cut-off events. [2024-11-23 01:40:28,872 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-11-23 01:40:28,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8070 conditions, 5929 events. 1817/5929 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 51261 event pairs, 540 based on Foata normal form. 0/4319 useless extension candidates. Maximal degree in co-relation 3890. Up to 1024 conditions per place. [2024-11-23 01:40:28,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 278 flow [2024-11-23 01:40:28,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 86 transitions, 276 flow [2024-11-23 01:40:28,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:40:28,903 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;@7f8cdc76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:40:28,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-23 01:40:28,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:40:28,905 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-23 01:40:28,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:40:28,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:28,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:40:28,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-23 01:40:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash 599760327, now seen corresponding path program 1 times [2024-11-23 01:40:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310217267] [2024-11-23 01:40:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:28,938 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 01:40:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310217267] [2024-11-23 01:40:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310217267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:40:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764047185] [2024-11-23 01:40:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:28,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:28,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2024-11-23 01:40:28,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 01:40:28,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:28,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2024-11-23 01:40:28,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand