./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:57:42,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:57:42,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:57:42,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:57:42,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:57:42,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:57:42,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:57:42,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:57:42,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:57:42,923 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:57:42,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:57:42,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:57:42,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:57:42,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:57:42,924 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:57:42,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:57:42,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:57:42,925 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:57:42,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:57:42,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:57:42,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:57:42,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:57:42,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:57:42,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:57:42,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:57:42,930 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:57:42,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:57:42,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:57:42,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:57:42,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:57:42,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:57:42,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:57:42,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:57:42,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:57:42,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:42,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:57:42,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:57:42,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:57:42,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:57:42,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:57:42,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:57:42,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:57:42,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:57:42,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:57:42,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-11-17 07:57:43,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:57:43,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:57:43,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:57:43,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:57:43,134 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:57:43,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-17 07:57:44,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:57:44,438 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:57:44,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-17 07:57:44,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c9f621f/4096b6e374d24fa6a242a4ce5405299a/FLAG658b6a7ea [2024-11-17 07:57:44,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c9f621f/4096b6e374d24fa6a242a4ce5405299a [2024-11-17 07:57:44,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:57:44,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:57:44,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:44,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:57:44,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:57:44,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7ead73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44, skipping insertion in model container [2024-11-17 07:57:44,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:57:44,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:44,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:57:44,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:44,698 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:57:44,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44 WrapperNode [2024-11-17 07:57:44,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:44,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:44,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:57:44,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:57:44,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,727 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 212 [2024-11-17 07:57:44,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:44,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:57:44,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:57:44,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:57:44,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,748 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-17 07:57:44,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,754 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:57:44,766 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:57:44,766 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:57:44,766 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:57:44,767 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (1/1) ... [2024-11-17 07:57:44,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:44,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:57:44,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:57:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:57:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:57:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:57:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:57:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:57:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:57:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:57:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:57:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:57:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:57:44,828 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:57:44,904 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:57:44,906 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:57:45,168 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:57:45,169 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:57:45,369 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:57:45,370 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:57:45,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:45 BoogieIcfgContainer [2024-11-17 07:57:45,370 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:57:45,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:57:45,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:57:45,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:57:45,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:57:44" (1/3) ... [2024-11-17 07:57:45,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4438d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:45, skipping insertion in model container [2024-11-17 07:57:45,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:44" (2/3) ... [2024-11-17 07:57:45,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4438d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:45, skipping insertion in model container [2024-11-17 07:57:45,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:45" (3/3) ... [2024-11-17 07:57:45,379 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-11-17 07:57:45,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:57:45,393 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-17 07:57:45,393 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:57:45,451 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:57:45,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 138 flow [2024-11-17 07:57:45,528 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2024-11-17 07:57:45,529 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:57:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 60 events. 8/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 147 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-11-17 07:57:45,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 138 flow [2024-11-17 07:57:45,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 58 transitions, 125 flow [2024-11-17 07:57:45,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:57:45,552 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;@7649450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:57:45,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-17 07:57:45,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:57:45,559 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:57:45,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:57:45,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:45,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:57:45,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:45,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash 18316736, now seen corresponding path program 1 times [2024-11-17 07:57:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940853853] [2024-11-17 07:57:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940853853] [2024-11-17 07:57:45,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940853853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:45,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:45,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922422268] [2024-11-17 07:57:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:45,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:45,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-17 07:57:45,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:45,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:45,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-17 07:57:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:46,033 INFO L124 PetriNetUnfolderBase]: 215/527 cut-off events. [2024-11-17 07:57:46,033 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 07:57:46,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 527 events. 215/527 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2926 event pairs, 128 based on Foata normal form. 57/409 useless extension candidates. Maximal degree in co-relation 803. Up to 338 conditions per place. [2024-11-17 07:57:46,037 INFO L140 encePairwiseOnDemand]: 43/62 looper letters, 27 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-17 07:57:46,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 189 flow [2024-11-17 07:57:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-17 07:57:46,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-11-17 07:57:46,051 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 125 flow. Second operand 4 states and 144 transitions. [2024-11-17 07:57:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 189 flow [2024-11-17 07:57:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:46,057 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 164 flow [2024-11-17 07:57:46,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-17 07:57:46,063 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-11-17 07:57:46,063 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 164 flow [2024-11-17 07:57:46,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:46,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:46,064 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:57:46,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:57:46,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:46,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1969838450, now seen corresponding path program 1 times [2024-11-17 07:57:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681414153] [2024-11-17 07:57:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681414153] [2024-11-17 07:57:46,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681414153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134593898] [2024-11-17 07:57:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:46,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:46,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:57:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:46,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134593898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:57:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390489757] [2024-11-17 07:57:46,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:46,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:46,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:46,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:57:46,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-17 07:57:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 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) [2024-11-17 07:57:46,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:46,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-17 07:57:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:46,479 INFO L124 PetriNetUnfolderBase]: 215/525 cut-off events. [2024-11-17 07:57:46,479 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-17 07:57:46,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 525 events. 215/525 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2950 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 853. Up to 328 conditions per place. [2024-11-17 07:57:46,483 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 20 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2024-11-17 07:57:46,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 220 flow [2024-11-17 07:57:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-17 07:57:46,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-17 07:57:46,486 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 164 flow. Second operand 6 states and 178 transitions. [2024-11-17 07:57:46,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 220 flow [2024-11-17 07:57:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:46,488 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2024-11-17 07:57:46,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-17 07:57:46,489 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-11-17 07:57:46,490 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2024-11-17 07:57:46,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 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) [2024-11-17 07:57:46,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:46,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:57:46,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:57:46,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:46,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash -935449289, now seen corresponding path program 1 times [2024-11-17 07:57:46,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696422830] [2024-11-17 07:57:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696422830] [2024-11-17 07:57:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696422830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530201867] [2024-11-17 07:57:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:46,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:46,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:57:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:46,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530201867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:46,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:57:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566014591] [2024-11-17 07:57:46,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:46,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:46,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-17 07:57:46,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:46,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:46,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-17 07:57:46,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:47,087 INFO L124 PetriNetUnfolderBase]: 221/561 cut-off events. [2024-11-17 07:57:47,087 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-17 07:57:47,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 561 events. 221/561 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3265 event pairs, 128 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 855. Up to 339 conditions per place. [2024-11-17 07:57:47,090 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 25 selfloop transitions, 25 changer transitions 0/72 dead transitions. [2024-11-17 07:57:47,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 394 flow [2024-11-17 07:57:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-17 07:57:47,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-11-17 07:57:47,092 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 10 states and 296 transitions. [2024-11-17 07:57:47,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 394 flow [2024-11-17 07:57:47,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 336 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:47,095 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 320 flow [2024-11-17 07:57:47,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=320, PETRI_PLACES=66, PETRI_TRANSITIONS=72} [2024-11-17 07:57:47,096 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-11-17 07:57:47,096 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 320 flow [2024-11-17 07:57:47,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:47,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:57:47,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-17 07:57:47,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1912405375, now seen corresponding path program 1 times [2024-11-17 07:57:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25500847] [2024-11-17 07:57:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25500847] [2024-11-17 07:57:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25500847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:47,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:47,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:47,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682104020] [2024-11-17 07:57:47,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:47,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:47,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:47,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-17 07:57:47,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:47,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-17 07:57:47,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:47,487 INFO L124 PetriNetUnfolderBase]: 238/615 cut-off events. [2024-11-17 07:57:47,487 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-17 07:57:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 615 events. 238/615 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3553 event pairs, 146 based on Foata normal form. 12/439 useless extension candidates. Maximal degree in co-relation 1062. Up to 359 conditions per place. [2024-11-17 07:57:47,491 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 50 selfloop transitions, 8 changer transitions 2/82 dead transitions. [2024-11-17 07:57:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 464 flow [2024-11-17 07:57:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-17 07:57:47,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580645161290323 [2024-11-17 07:57:47,493 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 320 flow. Second operand 5 states and 173 transitions. [2024-11-17 07:57:47,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 464 flow [2024-11-17 07:57:47,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 440 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:47,498 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 332 flow [2024-11-17 07:57:47,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-11-17 07:57:47,499 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-11-17 07:57:47,499 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 332 flow [2024-11-17 07:57:47,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:47,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:57:47,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:47,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1259647998, now seen corresponding path program 1 times [2024-11-17 07:57:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554853987] [2024-11-17 07:57:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:47,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554853987] [2024-11-17 07:57:47,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554853987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:47,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:47,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:47,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372080549] [2024-11-17 07:57:47,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:47,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:47,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:47,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-17 07:57:47,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:47,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-17 07:57:47,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:47,680 INFO L124 PetriNetUnfolderBase]: 269/753 cut-off events. [2024-11-17 07:57:47,680 INFO L125 PetriNetUnfolderBase]: For 247/259 co-relation queries the response was YES. [2024-11-17 07:57:47,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 753 events. 269/753 cut-off events. For 247/259 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4653 event pairs, 174 based on Foata normal form. 12/548 useless extension candidates. Maximal degree in co-relation 1416. Up to 405 conditions per place. [2024-11-17 07:57:47,683 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 69 selfloop transitions, 4 changer transitions 5/100 dead transitions. [2024-11-17 07:57:47,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 624 flow [2024-11-17 07:57:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-11-17 07:57:47,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2024-11-17 07:57:47,684 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 332 flow. Second operand 5 states and 177 transitions. [2024-11-17 07:57:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 624 flow [2024-11-17 07:57:47,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 100 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:47,686 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 350 flow [2024-11-17 07:57:47,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2024-11-17 07:57:47,687 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-17 07:57:47,687 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 350 flow [2024-11-17 07:57:47,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,687 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:47,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:57:47,688 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:47,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1511750168, now seen corresponding path program 1 times [2024-11-17 07:57:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114765083] [2024-11-17 07:57:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114765083] [2024-11-17 07:57:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114765083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399435549] [2024-11-17 07:57:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:47,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:47,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:47,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:57:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:47,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:47,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399435549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:47,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-17 07:57:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560932303] [2024-11-17 07:57:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:57:47,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:57:47,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:47,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:57:47,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:47,932 INFO L124 PetriNetUnfolderBase]: 204/635 cut-off events. [2024-11-17 07:57:47,932 INFO L125 PetriNetUnfolderBase]: For 299/327 co-relation queries the response was YES. [2024-11-17 07:57:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 635 events. 204/635 cut-off events. For 299/327 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3841 event pairs, 132 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 1215. Up to 382 conditions per place. [2024-11-17 07:57:47,934 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 45 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2024-11-17 07:57:47,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 434 flow [2024-11-17 07:57:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-17 07:57:47,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-11-17 07:57:47,935 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 350 flow. Second operand 3 states and 108 transitions. [2024-11-17 07:57:47,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 434 flow [2024-11-17 07:57:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 422 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:47,937 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 332 flow [2024-11-17 07:57:47,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-11-17 07:57:47,938 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-17 07:57:47,938 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 332 flow [2024-11-17 07:57:47,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:47,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:47,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:57:48,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:48,140 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:48,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 933251920, now seen corresponding path program 1 times [2024-11-17 07:57:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:48,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051472415] [2024-11-17 07:57:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:48,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:48,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051472415] [2024-11-17 07:57:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051472415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948022393] [2024-11-17 07:57:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:48,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:48,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:48,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:57:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:48,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:48,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:48,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948022393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:48,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:48,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 07:57:48,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666121451] [2024-11-17 07:57:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:48,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:57:48,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:57:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:48,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:57:48,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:48,411 INFO L124 PetriNetUnfolderBase]: 150/523 cut-off events. [2024-11-17 07:57:48,411 INFO L125 PetriNetUnfolderBase]: For 270/282 co-relation queries the response was YES. [2024-11-17 07:57:48,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 523 events. 150/523 cut-off events. For 270/282 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3051 event pairs, 96 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1048. Up to 298 conditions per place. [2024-11-17 07:57:48,413 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 42 selfloop transitions, 1 changer transitions 2/70 dead transitions. [2024-11-17 07:57:48,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 412 flow [2024-11-17 07:57:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-17 07:57:48,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-11-17 07:57:48,414 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 332 flow. Second operand 3 states and 106 transitions. [2024-11-17 07:57:48,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 412 flow [2024-11-17 07:57:48,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:48,415 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 313 flow [2024-11-17 07:57:48,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-17 07:57:48,416 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-11-17 07:57:48,416 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 313 flow [2024-11-17 07:57:48,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:48,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:48,416 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:57:48,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:57:48,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:48,620 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:48,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1048529421, now seen corresponding path program 2 times [2024-11-17 07:57:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700543489] [2024-11-17 07:57:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:48,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700543489] [2024-11-17 07:57:48,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700543489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594691230] [2024-11-17 07:57:48,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:48,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:48,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:48,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:48,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:57:48,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:48,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:48,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:48,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:48,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594691230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:48,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:57:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989420932] [2024-11-17 07:57:48,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:57:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:57:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:57:48,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-17 07:57:48,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 313 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:48,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-17 07:57:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:49,153 INFO L124 PetriNetUnfolderBase]: 132/458 cut-off events. [2024-11-17 07:57:49,153 INFO L125 PetriNetUnfolderBase]: For 319/331 co-relation queries the response was YES. [2024-11-17 07:57:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 458 events. 132/458 cut-off events. For 319/331 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2496 event pairs, 75 based on Foata normal form. 4/386 useless extension candidates. Maximal degree in co-relation 949. Up to 219 conditions per place. [2024-11-17 07:57:49,155 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 24 selfloop transitions, 37 changer transitions 0/81 dead transitions. [2024-11-17 07:57:49,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 81 transitions, 497 flow [2024-11-17 07:57:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:57:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:57:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 592 transitions. [2024-11-17 07:57:49,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-11-17 07:57:49,158 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 313 flow. Second operand 24 states and 592 transitions. [2024-11-17 07:57:49,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 81 transitions, 497 flow [2024-11-17 07:57:49,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 81 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:49,161 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 452 flow [2024-11-17 07:57:49,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=452, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-11-17 07:57:49,162 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-11-17 07:57:49,163 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 452 flow [2024-11-17 07:57:49,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:49,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:49,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:49,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:49,364 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:49,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1707414105, now seen corresponding path program 1 times [2024-11-17 07:57:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:49,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828334443] [2024-11-17 07:57:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:49,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828334443] [2024-11-17 07:57:49,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828334443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:49,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:49,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282328852] [2024-11-17 07:57:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:49,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:49,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:57:49,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:57:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:49,477 INFO L124 PetriNetUnfolderBase]: 122/435 cut-off events. [2024-11-17 07:57:49,478 INFO L125 PetriNetUnfolderBase]: For 485/489 co-relation queries the response was YES. [2024-11-17 07:57:49,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 435 events. 122/435 cut-off events. For 485/489 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2283 event pairs, 40 based on Foata normal form. 6/373 useless extension candidates. Maximal degree in co-relation 967. Up to 124 conditions per place. [2024-11-17 07:57:49,479 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 52 selfloop transitions, 2 changer transitions 1/83 dead transitions. [2024-11-17 07:57:49,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 579 flow [2024-11-17 07:57:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-17 07:57:49,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-11-17 07:57:49,480 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 452 flow. Second operand 3 states and 111 transitions. [2024-11-17 07:57:49,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 579 flow [2024-11-17 07:57:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 493 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-17 07:57:49,483 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 380 flow [2024-11-17 07:57:49,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-11-17 07:57:49,484 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-11-17 07:57:49,484 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 380 flow [2024-11-17 07:57:49,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:49,484 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:49,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:57:49,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:49,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1809107017, now seen corresponding path program 1 times [2024-11-17 07:57:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:49,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973193228] [2024-11-17 07:57:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:49,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973193228] [2024-11-17 07:57:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973193228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241486538] [2024-11-17 07:57:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:49,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:49,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:57:49,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:49,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:57:49,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:49,582 INFO L124 PetriNetUnfolderBase]: 104/371 cut-off events. [2024-11-17 07:57:49,582 INFO L125 PetriNetUnfolderBase]: For 332/340 co-relation queries the response was YES. [2024-11-17 07:57:49,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 371 events. 104/371 cut-off events. For 332/340 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1723 event pairs, 42 based on Foata normal form. 5/323 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2024-11-17 07:57:49,583 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 53 selfloop transitions, 2 changer transitions 3/86 dead transitions. [2024-11-17 07:57:49,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 522 flow [2024-11-17 07:57:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-17 07:57:49,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2024-11-17 07:57:49,584 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 380 flow. Second operand 3 states and 113 transitions. [2024-11-17 07:57:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 522 flow [2024-11-17 07:57:49,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 515 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:49,586 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 388 flow [2024-11-17 07:57:49,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-17 07:57:49,587 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-11-17 07:57:49,587 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 388 flow [2024-11-17 07:57:49,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:49,587 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-17 07:57:49,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:57:49,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:49,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1691181257, now seen corresponding path program 1 times [2024-11-17 07:57:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:49,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522941939] [2024-11-17 07:57:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522941939] [2024-11-17 07:57:49,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522941939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827521595] [2024-11-17 07:57:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:49,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:49,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:57:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:49,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 07:57:49,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:49,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:50,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827521595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:50,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-17 07:57:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321325009] [2024-11-17 07:57:50,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:50,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:57:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:57:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:57:50,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-17 07:57:50,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 388 flow. Second operand has 28 states, 28 states have (on average 25.071428571428573) internal successors, (702), 28 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:50,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:50,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-17 07:57:50,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:50,440 INFO L124 PetriNetUnfolderBase]: 125/505 cut-off events. [2024-11-17 07:57:50,440 INFO L125 PetriNetUnfolderBase]: For 972/976 co-relation queries the response was YES. [2024-11-17 07:57:50,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 505 events. 125/505 cut-off events. For 972/976 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2355 event pairs, 72 based on Foata normal form. 14/461 useless extension candidates. Maximal degree in co-relation 1247. Up to 206 conditions per place. [2024-11-17 07:57:50,442 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 22 selfloop transitions, 72 changer transitions 0/121 dead transitions. [2024-11-17 07:57:50,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 877 flow [2024-11-17 07:57:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 07:57:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 07:57:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 723 transitions. [2024-11-17 07:57:50,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4485111662531017 [2024-11-17 07:57:50,444 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 388 flow. Second operand 26 states and 723 transitions. [2024-11-17 07:57:50,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 877 flow [2024-11-17 07:57:50,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 121 transitions, 869 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:50,452 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 877 flow [2024-11-17 07:57:50,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=877, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-11-17 07:57:50,453 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-11-17 07:57:50,453 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 877 flow [2024-11-17 07:57:50,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 25.071428571428573) internal successors, (702), 28 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:50,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:50,454 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:50,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:50,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:50,658 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:50,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -338406958, now seen corresponding path program 1 times [2024-11-17 07:57:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158255036] [2024-11-17 07:57:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:50,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158255036] [2024-11-17 07:57:51,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158255036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:51,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893196370] [2024-11-17 07:57:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:51,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:51,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:57:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:51,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 07:57:51,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:51,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:51,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 07:57:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:51,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:51,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:57:51,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:57:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893196370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:51,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-17 07:57:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64942450] [2024-11-17 07:57:51,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:51,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 07:57:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 07:57:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-17 07:57:51,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-17 07:57:51,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 877 flow. Second operand has 25 states, 25 states have (on average 19.8) internal successors, (495), 25 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:51,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:51,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-17 07:57:51,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:53,257 INFO L124 PetriNetUnfolderBase]: 494/1291 cut-off events. [2024-11-17 07:57:53,257 INFO L125 PetriNetUnfolderBase]: For 1448/1460 co-relation queries the response was YES. [2024-11-17 07:57:53,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1291 events. 494/1291 cut-off events. For 1448/1460 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7919 event pairs, 107 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3065. Up to 246 conditions per place. [2024-11-17 07:57:53,263 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 122 selfloop transitions, 86 changer transitions 7/231 dead transitions. [2024-11-17 07:57:53,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 1624 flow [2024-11-17 07:57:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 07:57:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 07:57:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 562 transitions. [2024-11-17 07:57:53,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.394109396914446 [2024-11-17 07:57:53,265 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 877 flow. Second operand 23 states and 562 transitions. [2024-11-17 07:57:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 1624 flow [2024-11-17 07:57:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 231 transitions, 1434 flow, removed 54 selfloop flow, removed 13 redundant places. [2024-11-17 07:57:53,271 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 945 flow [2024-11-17 07:57:53,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=945, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-11-17 07:57:53,271 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-11-17 07:57:53,272 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 945 flow [2024-11-17 07:57:53,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 19.8) internal successors, (495), 25 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:53,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:53,272 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:53,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:53,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:53,477 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:53,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1390279277, now seen corresponding path program 1 times [2024-11-17 07:57:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471536706] [2024-11-17 07:57:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471536706] [2024-11-17 07:57:53,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471536706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:53,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622769780] [2024-11-17 07:57:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:53,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:53,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:53,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:53,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:57:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:53,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 07:57:53,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:54,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-17 07:57:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:54,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:54,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622769780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:54,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:54,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-17 07:57:54,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534825389] [2024-11-17 07:57:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:54,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:57:54,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-17 07:57:54,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 945 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:54,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:54,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-17 07:57:54,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:54,282 INFO L124 PetriNetUnfolderBase]: 720/1834 cut-off events. [2024-11-17 07:57:54,282 INFO L125 PetriNetUnfolderBase]: For 2233/2249 co-relation queries the response was YES. [2024-11-17 07:57:54,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 1834 events. 720/1834 cut-off events. For 2233/2249 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12290 event pairs, 104 based on Foata normal form. 30/1644 useless extension candidates. Maximal degree in co-relation 4613. Up to 502 conditions per place. [2024-11-17 07:57:54,290 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 155 selfloop transitions, 7 changer transitions 5/198 dead transitions. [2024-11-17 07:57:54,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 198 transitions, 1563 flow [2024-11-17 07:57:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:57:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:57:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-17 07:57:54,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2024-11-17 07:57:54,291 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 945 flow. Second operand 7 states and 236 transitions. [2024-11-17 07:57:54,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 198 transitions, 1563 flow [2024-11-17 07:57:54,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 198 transitions, 1523 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:54,298 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 964 flow [2024-11-17 07:57:54,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-11-17 07:57:54,298 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-11-17 07:57:54,298 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 964 flow [2024-11-17 07:57:54,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:54,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:54,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:54,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:54,499 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,SelfDestructingSolverStorable12 [2024-11-17 07:57:54,499 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:57:54,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1901203856, now seen corresponding path program 1 times [2024-11-17 07:57:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990219072] [2024-11-17 07:57:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990219072] [2024-11-17 07:57:54,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990219072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429763713] [2024-11-17 07:57:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:54,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:54,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:57:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:54,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 07:57:54,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:54,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 07:57:54,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:55,066 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:57:55,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 07:57:55,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 07:57:55,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 07:57:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:55,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:55,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:55,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-17 07:57:55,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:55,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2024-11-17 07:57:55,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:55,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2024-11-17 07:57:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:55,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429763713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:55,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:55,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-11-17 07:57:55,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127759558] [2024-11-17 07:57:55,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:55,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:57:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:57:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=619, Unknown=1, NotChecked=0, Total=756 [2024-11-17 07:57:56,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2024-11-17 07:57:56,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 964 flow. Second operand has 28 states, 28 states have (on average 13.357142857142858) internal successors, (374), 28 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:56,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:56,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2024-11-17 07:57:56,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:00,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:58:01,804 INFO L124 PetriNetUnfolderBase]: 2754/5497 cut-off events. [2024-11-17 07:58:01,805 INFO L125 PetriNetUnfolderBase]: For 5579/5581 co-relation queries the response was YES. [2024-11-17 07:58:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15191 conditions, 5497 events. 2754/5497 cut-off events. For 5579/5581 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 39120 event pairs, 670 based on Foata normal form. 56/4966 useless extension candidates. Maximal degree in co-relation 15151. Up to 2164 conditions per place. [2024-11-17 07:58:01,834 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 257 selfloop transitions, 108 changer transitions 19/396 dead transitions. [2024-11-17 07:58:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 396 transitions, 2961 flow [2024-11-17 07:58:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-17 07:58:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-17 07:58:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 531 transitions. [2024-11-17 07:58:01,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2953281423804227 [2024-11-17 07:58:01,838 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 964 flow. Second operand 29 states and 531 transitions. [2024-11-17 07:58:01,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 396 transitions, 2961 flow [2024-11-17 07:58:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 396 transitions, 2957 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:01,857 INFO L231 Difference]: Finished difference. Result has 178 places, 219 transitions, 2000 flow [2024-11-17 07:58:01,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2000, PETRI_PLACES=178, PETRI_TRANSITIONS=219} [2024-11-17 07:58:01,859 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2024-11-17 07:58:01,859 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 219 transitions, 2000 flow [2024-11-17 07:58:01,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.357142857142858) internal successors, (374), 28 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:01,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:01,860 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:01,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:58:02,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 07:58:02,064 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:02,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -321487194, now seen corresponding path program 1 times [2024-11-17 07:58:02,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:02,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252353765] [2024-11-17 07:58:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:02,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:02,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:02,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252353765] [2024-11-17 07:58:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252353765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:02,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155401257] [2024-11-17 07:58:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:02,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:02,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:58:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:02,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 07:58:02,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:02,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-17 07:58:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:58:02,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155401257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-17 07:58:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312119657] [2024-11-17 07:58:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:02,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:58:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:58:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:58:02,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-17 07:58:02,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 219 transitions, 2000 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:02,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:02,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-17 07:58:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:03,068 INFO L124 PetriNetUnfolderBase]: 1606/3929 cut-off events. [2024-11-17 07:58:03,068 INFO L125 PetriNetUnfolderBase]: For 12194/12330 co-relation queries the response was YES. [2024-11-17 07:58:03,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12954 conditions, 3929 events. 1606/3929 cut-off events. For 12194/12330 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31279 event pairs, 181 based on Foata normal form. 120/3739 useless extension candidates. Maximal degree in co-relation 12900. Up to 1372 conditions per place. [2024-11-17 07:58:03,102 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 216 selfloop transitions, 36 changer transitions 4/290 dead transitions. [2024-11-17 07:58:03,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 290 transitions, 2993 flow [2024-11-17 07:58:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:58:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:58:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-17 07:58:03,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460829493087558 [2024-11-17 07:58:03,103 INFO L175 Difference]: Start difference. First operand has 178 places, 219 transitions, 2000 flow. Second operand 7 states and 237 transitions. [2024-11-17 07:58:03,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 290 transitions, 2993 flow [2024-11-17 07:58:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 290 transitions, 2941 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-17 07:58:03,138 INFO L231 Difference]: Finished difference. Result has 181 places, 227 transitions, 2185 flow [2024-11-17 07:58:03,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2185, PETRI_PLACES=181, PETRI_TRANSITIONS=227} [2024-11-17 07:58:03,138 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 124 predicate places. [2024-11-17 07:58:03,138 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 227 transitions, 2185 flow [2024-11-17 07:58:03,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:03,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:03,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:03,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:03,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:58:03,344 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:03,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1744976493, now seen corresponding path program 1 times [2024-11-17 07:58:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:03,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21392634] [2024-11-17 07:58:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:03,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21392634] [2024-11-17 07:58:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21392634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108200562] [2024-11-17 07:58:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:03,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:03,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:58:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:03,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:58:03,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:03,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:03,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108200562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:03,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 07:58:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897749062] [2024-11-17 07:58:03,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:03,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:58:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:58:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:58:03,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-17 07:58:03,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 227 transitions, 2185 flow. Second operand has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:03,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:03,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-17 07:58:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:04,252 INFO L124 PetriNetUnfolderBase]: 862/2663 cut-off events. [2024-11-17 07:58:04,252 INFO L125 PetriNetUnfolderBase]: For 11718/11789 co-relation queries the response was YES. [2024-11-17 07:58:04,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 2663 events. 862/2663 cut-off events. For 11718/11789 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21598 event pairs, 500 based on Foata normal form. 48/2418 useless extension candidates. Maximal degree in co-relation 9458. Up to 1097 conditions per place. [2024-11-17 07:58:04,270 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 112 selfloop transitions, 95 changer transitions 3/243 dead transitions. [2024-11-17 07:58:04,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 243 transitions, 2649 flow [2024-11-17 07:58:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:58:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:58:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-11-17 07:58:04,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-17 07:58:04,271 INFO L175 Difference]: Start difference. First operand has 181 places, 227 transitions, 2185 flow. Second operand 9 states and 248 transitions. [2024-11-17 07:58:04,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 243 transitions, 2649 flow [2024-11-17 07:58:04,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 243 transitions, 2623 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:04,305 INFO L231 Difference]: Finished difference. Result has 187 places, 218 transitions, 2262 flow [2024-11-17 07:58:04,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2262, PETRI_PLACES=187, PETRI_TRANSITIONS=218} [2024-11-17 07:58:04,305 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 130 predicate places. [2024-11-17 07:58:04,305 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 218 transitions, 2262 flow [2024-11-17 07:58:04,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:04,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:04,306 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:04,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:04,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 07:58:04,506 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:04,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1918230244, now seen corresponding path program 2 times [2024-11-17 07:58:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447622003] [2024-11-17 07:58:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447622003] [2024-11-17 07:58:05,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447622003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324937661] [2024-11-17 07:58:05,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:05,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:05,787 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:05,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:58:05,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:58:05,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:05,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:58:05,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:05,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-17 07:58:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:58:06,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324937661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20 [2024-11-17 07:58:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428736483] [2024-11-17 07:58:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:06,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:58:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:58:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:58:06,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-17 07:58:06,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 218 transitions, 2262 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:06,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:06,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-17 07:58:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:06,477 INFO L124 PetriNetUnfolderBase]: 1394/3561 cut-off events. [2024-11-17 07:58:06,477 INFO L125 PetriNetUnfolderBase]: For 13344/13478 co-relation queries the response was YES. [2024-11-17 07:58:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12393 conditions, 3561 events. 1394/3561 cut-off events. For 13344/13478 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27724 event pairs, 153 based on Foata normal form. 105/3337 useless extension candidates. Maximal degree in co-relation 12335. Up to 817 conditions per place. [2024-11-17 07:58:06,502 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 211 selfloop transitions, 35 changer transitions 4/284 dead transitions. [2024-11-17 07:58:06,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 284 transitions, 3197 flow [2024-11-17 07:58:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:58:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:58:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2024-11-17 07:58:06,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506912442396313 [2024-11-17 07:58:06,504 INFO L175 Difference]: Start difference. First operand has 187 places, 218 transitions, 2262 flow. Second operand 7 states and 239 transitions. [2024-11-17 07:58:06,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 284 transitions, 3197 flow [2024-11-17 07:58:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 284 transitions, 2983 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-11-17 07:58:06,539 INFO L231 Difference]: Finished difference. Result has 185 places, 219 transitions, 2168 flow [2024-11-17 07:58:06,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2168, PETRI_PLACES=185, PETRI_TRANSITIONS=219} [2024-11-17 07:58:06,539 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 128 predicate places. [2024-11-17 07:58:06,540 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 219 transitions, 2168 flow [2024-11-17 07:58:06,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:06,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:06,540 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:06,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:58:06,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 07:58:06,740 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:06,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash 337161941, now seen corresponding path program 1 times [2024-11-17 07:58:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917231931] [2024-11-17 07:58:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917231931] [2024-11-17 07:58:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917231931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6023503] [2024-11-17 07:58:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:06,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:06,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:58:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:06,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:58:06,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:07,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:07,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6023503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:07,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:07,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-17 07:58:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278611099] [2024-11-17 07:58:07,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:07,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:58:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:58:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:58:07,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-17 07:58:07,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 219 transitions, 2168 flow. Second operand has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:07,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:07,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-17 07:58:07,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:07,662 INFO L124 PetriNetUnfolderBase]: 947/2918 cut-off events. [2024-11-17 07:58:07,662 INFO L125 PetriNetUnfolderBase]: For 12492/12588 co-relation queries the response was YES. [2024-11-17 07:58:07,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 2918 events. 947/2918 cut-off events. For 12492/12588 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23489 event pairs, 611 based on Foata normal form. 65/2652 useless extension candidates. Maximal degree in co-relation 10209. Up to 1105 conditions per place. [2024-11-17 07:58:07,677 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 169 selfloop transitions, 60 changer transitions 41/302 dead transitions. [2024-11-17 07:58:07,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 302 transitions, 3374 flow [2024-11-17 07:58:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:58:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:58:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-11-17 07:58:07,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-17 07:58:07,679 INFO L175 Difference]: Start difference. First operand has 185 places, 219 transitions, 2168 flow. Second operand 11 states and 310 transitions. [2024-11-17 07:58:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 302 transitions, 3374 flow [2024-11-17 07:58:07,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 302 transitions, 3346 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:07,706 INFO L231 Difference]: Finished difference. Result has 194 places, 214 transitions, 2206 flow [2024-11-17 07:58:07,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2206, PETRI_PLACES=194, PETRI_TRANSITIONS=214} [2024-11-17 07:58:07,707 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 137 predicate places. [2024-11-17 07:58:07,707 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 214 transitions, 2206 flow [2024-11-17 07:58:07,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:07,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:07,707 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:07,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:07,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:58:07,908 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:07,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1041348843, now seen corresponding path program 2 times [2024-11-17 07:58:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060278285] [2024-11-17 07:58:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:07,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060278285] [2024-11-17 07:58:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060278285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461167798] [2024-11-17 07:58:08,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:08,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:58:08,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:58:08,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:08,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:58:08,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:08,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-17 07:58:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:58:08,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:08,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461167798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:08,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:08,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 14 [2024-11-17 07:58:08,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546360458] [2024-11-17 07:58:08,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:08,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:58:08,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:08,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:58:08,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:58:08,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-17 07:58:08,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 214 transitions, 2206 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:08,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:08,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-17 07:58:08,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:09,183 INFO L124 PetriNetUnfolderBase]: 1087/2859 cut-off events. [2024-11-17 07:58:09,183 INFO L125 PetriNetUnfolderBase]: For 13442/13502 co-relation queries the response was YES. [2024-11-17 07:58:09,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 2859 events. 1087/2859 cut-off events. For 13442/13502 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21558 event pairs, 132 based on Foata normal form. 69/2670 useless extension candidates. Maximal degree in co-relation 10177. Up to 978 conditions per place. [2024-11-17 07:58:09,202 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 219 selfloop transitions, 18 changer transitions 5/275 dead transitions. [2024-11-17 07:58:09,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 275 transitions, 3260 flow [2024-11-17 07:58:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:58:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:58:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-11-17 07:58:09,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-11-17 07:58:09,204 INFO L175 Difference]: Start difference. First operand has 194 places, 214 transitions, 2206 flow. Second operand 7 states and 231 transitions. [2024-11-17 07:58:09,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 275 transitions, 3260 flow [2024-11-17 07:58:09,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 275 transitions, 3192 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-17 07:58:09,232 INFO L231 Difference]: Finished difference. Result has 191 places, 213 transitions, 2196 flow [2024-11-17 07:58:09,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2196, PETRI_PLACES=191, PETRI_TRANSITIONS=213} [2024-11-17 07:58:09,233 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 134 predicate places. [2024-11-17 07:58:09,233 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 213 transitions, 2196 flow [2024-11-17 07:58:09,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:09,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:09,233 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:09,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 07:58:09,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:09,435 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:09,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2028865936, now seen corresponding path program 2 times [2024-11-17 07:58:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:09,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820468695] [2024-11-17 07:58:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:09,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820468695] [2024-11-17 07:58:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820468695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946067273] [2024-11-17 07:58:09,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:09,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:09,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:09,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:09,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 07:58:09,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:58:09,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:09,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:58:09,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:09,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946067273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:09,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:09,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-17 07:58:09,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247146934] [2024-11-17 07:58:09,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:09,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:58:09,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:58:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:58:09,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-17 07:58:09,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 213 transitions, 2196 flow. Second operand has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:09,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:09,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-17 07:58:09,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:10,403 INFO L124 PetriNetUnfolderBase]: 767/2347 cut-off events. [2024-11-17 07:58:10,403 INFO L125 PetriNetUnfolderBase]: For 10006/10082 co-relation queries the response was YES. [2024-11-17 07:58:10,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 2347 events. 767/2347 cut-off events. For 10006/10082 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17710 event pairs, 337 based on Foata normal form. 42/2125 useless extension candidates. Maximal degree in co-relation 8335. Up to 874 conditions per place. [2024-11-17 07:58:10,417 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 96 selfloop transitions, 61 changer transitions 58/243 dead transitions. [2024-11-17 07:58:10,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 243 transitions, 2737 flow [2024-11-17 07:58:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 07:58:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 07:58:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 332 transitions. [2024-11-17 07:58:10,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-11-17 07:58:10,418 INFO L175 Difference]: Start difference. First operand has 191 places, 213 transitions, 2196 flow. Second operand 12 states and 332 transitions. [2024-11-17 07:58:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 243 transitions, 2737 flow [2024-11-17 07:58:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 243 transitions, 2712 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-17 07:58:10,438 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 1914 flow [2024-11-17 07:58:10,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1914, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-11-17 07:58:10,439 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 138 predicate places. [2024-11-17 07:58:10,439 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 1914 flow [2024-11-17 07:58:10,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:10,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:10,440 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:10,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 07:58:10,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:10,643 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:10,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 734116155, now seen corresponding path program 2 times [2024-11-17 07:58:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793829328] [2024-11-17 07:58:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793829328] [2024-11-17 07:58:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793829328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300075294] [2024-11-17 07:58:10,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:10,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:10,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 07:58:10,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:58:10,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:10,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:58:10,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-17 07:58:10,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300075294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:10,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:10,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-17 07:58:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333848363] [2024-11-17 07:58:10,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:10,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:10,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:10,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:58:10,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:58:10,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 1914 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:10,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:10,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:58:10,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:11,089 INFO L124 PetriNetUnfolderBase]: 625/1928 cut-off events. [2024-11-17 07:58:11,089 INFO L125 PetriNetUnfolderBase]: For 7842/7921 co-relation queries the response was YES. [2024-11-17 07:58:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 1928 events. 625/1928 cut-off events. For 7842/7921 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13344 event pairs, 220 based on Foata normal form. 62/1824 useless extension candidates. Maximal degree in co-relation 6714. Up to 600 conditions per place. [2024-11-17 07:58:11,097 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 155 selfloop transitions, 10 changer transitions 13/211 dead transitions. [2024-11-17 07:58:11,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 2488 flow [2024-11-17 07:58:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-17 07:58:11,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209677419354839 [2024-11-17 07:58:11,098 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 1914 flow. Second operand 4 states and 154 transitions. [2024-11-17 07:58:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 2488 flow [2024-11-17 07:58:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 211 transitions, 2312 flow, removed 14 selfloop flow, removed 17 redundant places. [2024-11-17 07:58:11,116 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 1752 flow [2024-11-17 07:58:11,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1752, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-11-17 07:58:11,116 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 116 predicate places. [2024-11-17 07:58:11,116 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 1752 flow [2024-11-17 07:58:11,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:11,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:11,117 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:11,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 07:58:11,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:11,317 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:11,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 697079838, now seen corresponding path program 3 times [2024-11-17 07:58:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493675148] [2024-11-17 07:58:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:58:11,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493675148] [2024-11-17 07:58:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493675148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:11,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:58:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267780755] [2024-11-17 07:58:11,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:11,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:58:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:58:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:58:11,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-17 07:58:11,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 1752 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:11,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:11,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-17 07:58:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:11,587 INFO L124 PetriNetUnfolderBase]: 575/1912 cut-off events. [2024-11-17 07:58:11,588 INFO L125 PetriNetUnfolderBase]: For 7352/7432 co-relation queries the response was YES. [2024-11-17 07:58:11,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 1912 events. 575/1912 cut-off events. For 7352/7432 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13447 event pairs, 196 based on Foata normal form. 49/1788 useless extension candidates. Maximal degree in co-relation 6283. Up to 552 conditions per place. [2024-11-17 07:58:11,597 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 167 selfloop transitions, 7 changer transitions 0/207 dead transitions. [2024-11-17 07:58:11,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 207 transitions, 2406 flow [2024-11-17 07:58:11,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-17 07:58:11,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-17 07:58:11,598 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 1752 flow. Second operand 4 states and 152 transitions. [2024-11-17 07:58:11,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 207 transitions, 2406 flow [2024-11-17 07:58:11,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 207 transitions, 2366 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:11,609 INFO L231 Difference]: Finished difference. Result has 168 places, 175 transitions, 1792 flow [2024-11-17 07:58:11,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1792, PETRI_PLACES=168, PETRI_TRANSITIONS=175} [2024-11-17 07:58:11,609 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 111 predicate places. [2024-11-17 07:58:11,610 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 175 transitions, 1792 flow [2024-11-17 07:58:11,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:11,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:11,610 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:11,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 07:58:11,610 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:11,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 694055457, now seen corresponding path program 1 times [2024-11-17 07:58:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548552269] [2024-11-17 07:58:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548552269] [2024-11-17 07:58:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548552269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132999500] [2024-11-17 07:58:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:12,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:12,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 07:58:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:12,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:58:12,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:12,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 07:58:12,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:58:12,512 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:58:12,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 07:58:12,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-17 07:58:12,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-17 07:58:13,014 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:58:13,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-17 07:58:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:13,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:13,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:58:13,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-17 07:58:13,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:58:13,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2024-11-17 07:58:13,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2024-11-17 07:58:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132999500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:14,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-17 07:58:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004383909] [2024-11-17 07:58:14,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:14,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-17 07:58:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-17 07:58:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1309, Unknown=1, NotChecked=0, Total=1482 [2024-11-17 07:58:14,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-17 07:58:14,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 175 transitions, 1792 flow. Second operand has 39 states, 39 states have (on average 16.641025641025642) internal successors, (649), 39 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:14,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:14,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-17 07:58:14,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:17,544 INFO L124 PetriNetUnfolderBase]: 2965/6882 cut-off events. [2024-11-17 07:58:17,545 INFO L125 PetriNetUnfolderBase]: For 24475/24687 co-relation queries the response was YES. [2024-11-17 07:58:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23889 conditions, 6882 events. 2965/6882 cut-off events. For 24475/24687 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 55592 event pairs, 587 based on Foata normal form. 211/6535 useless extension candidates. Maximal degree in co-relation 23837. Up to 1291 conditions per place. [2024-11-17 07:58:17,585 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 277 selfloop transitions, 246 changer transitions 33/571 dead transitions. [2024-11-17 07:58:17,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 571 transitions, 6312 flow [2024-11-17 07:58:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-17 07:58:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-17 07:58:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 900 transitions. [2024-11-17 07:58:17,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3155680224403927 [2024-11-17 07:58:17,587 INFO L175 Difference]: Start difference. First operand has 168 places, 175 transitions, 1792 flow. Second operand 46 states and 900 transitions. [2024-11-17 07:58:17,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 571 transitions, 6312 flow [2024-11-17 07:58:17,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 571 transitions, 6264 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-17 07:58:17,612 INFO L231 Difference]: Finished difference. Result has 222 places, 325 transitions, 3958 flow [2024-11-17 07:58:17,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3958, PETRI_PLACES=222, PETRI_TRANSITIONS=325} [2024-11-17 07:58:17,612 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 165 predicate places. [2024-11-17 07:58:17,612 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 325 transitions, 3958 flow [2024-11-17 07:58:17,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 16.641025641025642) internal successors, (649), 39 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:17,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:17,613 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:17,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:17,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:17,813 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:17,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1444078038, now seen corresponding path program 1 times [2024-11-17 07:58:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:17,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614861828] [2024-11-17 07:58:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:18,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:18,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614861828] [2024-11-17 07:58:18,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614861828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:18,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129297786] [2024-11-17 07:58:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:18,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:18,357 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:18,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 07:58:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:18,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 07:58:18,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:18,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:58:19,007 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:58:19,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-17 07:58:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:19,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:19,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-17 07:58:19,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2024-11-17 07:58:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129297786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:19,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2024-11-17 07:58:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360723614] [2024-11-17 07:58:19,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:19,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-17 07:58:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-17 07:58:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 07:58:19,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-17 07:58:19,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 325 transitions, 3958 flow. Second operand has 41 states, 41 states have (on average 19.975609756097562) internal successors, (819), 41 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:19,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:19,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-17 07:58:19,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:23,995 INFO L124 PetriNetUnfolderBase]: 5489/13079 cut-off events. [2024-11-17 07:58:23,995 INFO L125 PetriNetUnfolderBase]: For 56079/56545 co-relation queries the response was YES. [2024-11-17 07:58:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50479 conditions, 13079 events. 5489/13079 cut-off events. For 56079/56545 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 123141 event pairs, 673 based on Foata normal form. 453/12708 useless extension candidates. Maximal degree in co-relation 50416. Up to 1980 conditions per place. [2024-11-17 07:58:24,079 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 453 selfloop transitions, 249 changer transitions 22/753 dead transitions. [2024-11-17 07:58:24,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 753 transitions, 9620 flow [2024-11-17 07:58:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-17 07:58:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-17 07:58:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 963 transitions. [2024-11-17 07:58:24,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3788355625491739 [2024-11-17 07:58:24,081 INFO L175 Difference]: Start difference. First operand has 222 places, 325 transitions, 3958 flow. Second operand 41 states and 963 transitions. [2024-11-17 07:58:24,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 753 transitions, 9620 flow [2024-11-17 07:58:24,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 753 transitions, 9024 flow, removed 286 selfloop flow, removed 10 redundant places. [2024-11-17 07:58:24,151 INFO L231 Difference]: Finished difference. Result has 266 places, 362 transitions, 4723 flow [2024-11-17 07:58:24,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4723, PETRI_PLACES=266, PETRI_TRANSITIONS=362} [2024-11-17 07:58:24,151 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 209 predicate places. [2024-11-17 07:58:24,151 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 362 transitions, 4723 flow [2024-11-17 07:58:24,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 19.975609756097562) internal successors, (819), 41 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:24,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:24,152 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:24,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-17 07:58:24,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:24,352 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1174565504, now seen corresponding path program 1 times [2024-11-17 07:58:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593642276] [2024-11-17 07:58:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:24,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593642276] [2024-11-17 07:58:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593642276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:24,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698739968] [2024-11-17 07:58:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:24,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:24,971 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:24,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 07:58:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:25,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 07:58:25,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:25,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-17 07:58:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 07:58:25,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:25,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:58:25,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-17 07:58:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:58:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698739968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:25,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 19 [2024-11-17 07:58:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194942438] [2024-11-17 07:58:25,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 07:58:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 07:58:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:58:25,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-17 07:58:25,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 362 transitions, 4723 flow. Second operand has 21 states, 21 states have (on average 18.80952380952381) internal successors, (395), 21 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:25,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:25,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-17 07:58:25,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:30,585 INFO L124 PetriNetUnfolderBase]: 11774/25961 cut-off events. [2024-11-17 07:58:30,585 INFO L125 PetriNetUnfolderBase]: For 142055/142746 co-relation queries the response was YES. [2024-11-17 07:58:30,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105692 conditions, 25961 events. 11774/25961 cut-off events. For 142055/142746 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 248457 event pairs, 1696 based on Foata normal form. 809/25397 useless extension candidates. Maximal degree in co-relation 105614. Up to 4489 conditions per place. [2024-11-17 07:58:30,794 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 768 selfloop transitions, 222 changer transitions 25/1048 dead transitions. [2024-11-17 07:58:30,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1048 transitions, 13784 flow [2024-11-17 07:58:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-17 07:58:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-17 07:58:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1164 transitions. [2024-11-17 07:58:30,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37548387096774194 [2024-11-17 07:58:30,796 INFO L175 Difference]: Start difference. First operand has 266 places, 362 transitions, 4723 flow. Second operand 50 states and 1164 transitions. [2024-11-17 07:58:30,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1048 transitions, 13784 flow [2024-11-17 07:58:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 1048 transitions, 12519 flow, removed 322 selfloop flow, removed 18 redundant places. [2024-11-17 07:58:31,278 INFO L231 Difference]: Finished difference. Result has 322 places, 522 transitions, 6496 flow [2024-11-17 07:58:31,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6496, PETRI_PLACES=322, PETRI_TRANSITIONS=522} [2024-11-17 07:58:31,279 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 265 predicate places. [2024-11-17 07:58:31,279 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 522 transitions, 6496 flow [2024-11-17 07:58:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.80952380952381) internal successors, (395), 21 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:31,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:31,279 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:31,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:31,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:31,480 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-17 07:58:31,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1528288022, now seen corresponding path program 2 times [2024-11-17 07:58:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:31,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583838078] [2024-11-17 07:58:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:32,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583838078] [2024-11-17 07:58:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583838078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866681451] [2024-11-17 07:58:32,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:32,062 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:32,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 07:58:32,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:58:32,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:32,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-17 07:58:32,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:33,167 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-17 07:58:33,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 35 [2024-11-17 07:58:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:33,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:33,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:58:33,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 109 [2024-11-17 07:58:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:58:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866681451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:34,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 17] total 47 [2024-11-17 07:58:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791862444] [2024-11-17 07:58:34,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:34,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-17 07:58:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-17 07:58:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2024-11-17 07:58:35,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-17 07:58:35,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 522 transitions, 6496 flow. Second operand has 49 states, 49 states have (on average 14.89795918367347) internal successors, (730), 49 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:35,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:35,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-17 07:58:35,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:48,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-17 07:58:53,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-17 07:59:09,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:59:14,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]