./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/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-wip.fs.cvc5-61a6796-m [2024-10-15 00:05:51,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:05:51,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:05:51,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:05:51,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:05:51,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:05:51,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:05:51,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:05:51,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:05:51,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:05:51,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:05:51,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:05:51,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:05:51,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:05:51,677 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:05:51,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:05:51,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:05:51,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:05:51,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:05:51,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:05:51,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:05:51,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:05:51,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:05:51,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:05:51,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:05:51,683 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:05:51,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:05:51,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:05:51,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:05:51,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:05:51,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:05:51,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:05:51,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:05:51,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:05:51,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:05:51,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:05:51,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:05:51,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:05:51,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:05:51,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:05:51,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:05:51,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:05:51,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:05:51,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:05:51,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-10-15 00:05:52,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:05:52,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:05:52,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:05:52,038 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:05:52,040 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:05:52,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-10-15 00:05:53,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:05:53,959 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:05:53,960 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-10-15 00:05:53,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a0d7f6a/b22e5cdefe384d28b18cc3e52a10327e/FLAG2e1009973 [2024-10-15 00:05:53,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a0d7f6a/b22e5cdefe384d28b18cc3e52a10327e [2024-10-15 00:05:53,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:05:53,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:05:53,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:05:53,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:05:54,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:05:54,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:53" (1/1) ... [2024-10-15 00:05:54,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d175297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54, skipping insertion in model container [2024-10-15 00:05:54,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:53" (1/1) ... [2024-10-15 00:05:54,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:05:54,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:05:54,286 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:05:54,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:05:54,349 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:05:54,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54 WrapperNode [2024-10-15 00:05:54,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:05:54,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:05:54,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:05:54,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:05:54,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,406 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 216 [2024-10-15 00:05:54,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:05:54,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:05:54,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:05:54,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:05:54,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,454 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]. [2024-10-15 00:05:54,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:05:54,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:05:54,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:05:54,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:05:54,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (1/1) ... [2024-10-15 00:05:54,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:05:54,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:54,523 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) [2024-10-15 00:05:54,526 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 [2024-10-15 00:05:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:05:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:05:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:05:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:05:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:05:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:05:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:05:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:05:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:05:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:05:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:05:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:05:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:05:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:05:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:05:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:05:54,576 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:05:54,686 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:05:54,688 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:05:55,043 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:05:55,043 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:05:55,446 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:05:55,446 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:05:55,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:55 BoogieIcfgContainer [2024-10-15 00:05:55,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:05:55,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:05:55,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:05:55,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:05:55,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:05:53" (1/3) ... [2024-10-15 00:05:55,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ead566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:55, skipping insertion in model container [2024-10-15 00:05:55,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:54" (2/3) ... [2024-10-15 00:05:55,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ead566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:55, skipping insertion in model container [2024-10-15 00:05:55,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:55" (3/3) ... [2024-10-15 00:05:55,463 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-10-15 00:05:55,483 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:05:55,483 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-15 00:05:55,483 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:05:55,538 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:05:55,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2024-10-15 00:05:55,599 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-10-15 00:05:55,600 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:05:55,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-15 00:05:55,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2024-10-15 00:05:55,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2024-10-15 00:05:55,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:05:55,624 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;@59bf9d7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:05:55,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-15 00:05:55,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:05:55,628 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:05:55,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:05:55,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:55,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:05:55,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:55,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash 668136, now seen corresponding path program 1 times [2024-10-15 00:05:55,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109119653] [2024-10-15 00:05:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:55,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:55,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109119653] [2024-10-15 00:05:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109119653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:55,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687891045] [2024-10-15 00:05:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:55,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:55,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:55,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:05:55,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-15 00:05:55,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:05:55,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:56,170 INFO L124 PetriNetUnfolderBase]: 213/466 cut-off events. [2024-10-15 00:05:56,171 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-15 00:05:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 466 events. 213/466 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2436 event pairs, 128 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 755. Up to 327 conditions per place. [2024-10-15 00:05:56,182 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-10-15 00:05:56,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 141 flow [2024-10-15 00:05:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-15 00:05:56,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-15 00:05:56,203 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 96 transitions. [2024-10-15 00:05:56,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 141 flow [2024-10-15 00:05:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:05:56,211 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2024-10-15 00:05:56,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-10-15 00:05:56,220 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-10-15 00:05:56,220 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2024-10-15 00:05:56,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-15 00:05:56,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:56,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-15 00:05:56,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:05:56,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:56,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 20712876, now seen corresponding path program 1 times [2024-10-15 00:05:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:56,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734770649] [2024-10-15 00:05:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:56,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734770649] [2024-10-15 00:05:56,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734770649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:56,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:56,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123465149] [2024-10-15 00:05:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:56,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:56,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:05:56,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-15 00:05:56,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:56,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:05:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:56,527 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2024-10-15 00:05:56,527 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-15 00:05:56,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 474 events. 215/474 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2465 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 795. Up to 336 conditions per place. [2024-10-15 00:05:56,532 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-10-15 00:05:56,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 182 flow [2024-10-15 00:05:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-15 00:05:56,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-10-15 00:05:56,534 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 4 states and 98 transitions. [2024-10-15 00:05:56,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 182 flow [2024-10-15 00:05:56,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:05:56,536 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2024-10-15 00:05:56,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-15 00:05:56,537 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-10-15 00:05:56,538 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2024-10-15 00:05:56,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-15 00:05:56,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:56,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:56,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:05:56,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:56,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1428888319, now seen corresponding path program 1 times [2024-10-15 00:05:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:56,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534947213] [2024-10-15 00:05:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534947213] [2024-10-15 00:05:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534947213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:05:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186182482] [2024-10-15 00:05:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:56,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:56,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:05:56,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:56,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:56,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:05:56,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:56,807 INFO L124 PetriNetUnfolderBase]: 232/522 cut-off events. [2024-10-15 00:05:56,808 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-15 00:05:56,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 522 events. 232/522 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2749 event pairs, 146 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 807. Up to 335 conditions per place. [2024-10-15 00:05:56,825 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-10-15 00:05:56,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 240 flow [2024-10-15 00:05:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-15 00:05:56,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-15 00:05:56,827 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-10-15 00:05:56,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 240 flow [2024-10-15 00:05:56,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:05:56,833 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 157 flow [2024-10-15 00:05:56,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-15 00:05:56,835 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-10-15 00:05:56,835 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 157 flow [2024-10-15 00:05:56,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:56,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:56,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:05:56,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:05:56,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:56,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338175, now seen corresponding path program 1 times [2024-10-15 00:05:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085284792] [2024-10-15 00:05:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:56,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085284792] [2024-10-15 00:05:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085284792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734292331] [2024-10-15 00:05:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:56,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:56,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:56,965 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) [2024-10-15 00:05:56,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:05:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:57,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:05:57,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:57,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734292331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:57,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:57,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:05:57,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080731546] [2024-10-15 00:05:57,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:57,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:05:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:05:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:05:57,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:05:57,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 157 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-15 00:05:57,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:57,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:05:57,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:57,455 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2024-10-15 00:05:57,456 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-15 00:05:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 546 events. 238/546 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2967 event pairs, 146 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 928. Up to 381 conditions per place. [2024-10-15 00:05:57,460 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-10-15 00:05:57,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 341 flow [2024-10-15 00:05:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:05:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:05:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-10-15 00:05:57,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.432 [2024-10-15 00:05:57,466 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 157 flow. Second operand 10 states and 216 transitions. [2024-10-15 00:05:57,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 341 flow [2024-10-15 00:05:57,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:57,471 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 319 flow [2024-10-15 00:05:57,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-15 00:05:57,473 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-10-15 00:05:57,474 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 319 flow [2024-10-15 00:05:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-15 00:05:57,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:57,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:57,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:57,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:57,680 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:57,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008352, now seen corresponding path program 1 times [2024-10-15 00:05:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463986422] [2024-10-15 00:05:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463986422] [2024-10-15 00:05:57,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463986422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:57,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:57,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115404553] [2024-10-15 00:05:57,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:57,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:57,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:05:57,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:57,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:57,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:05:57,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:57,977 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2024-10-15 00:05:57,978 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-15 00:05:57,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 651 events. 269/651 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3676 event pairs, 174 based on Foata normal form. 14/527 useless extension candidates. Maximal degree in co-relation 1314. Up to 396 conditions per place. [2024-10-15 00:05:57,983 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 65 selfloop transitions, 3 changer transitions 4/88 dead transitions. [2024-10-15 00:05:57,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 595 flow [2024-10-15 00:05:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-10-15 00:05:57,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-10-15 00:05:57,985 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 319 flow. Second operand 4 states and 123 transitions. [2024-10-15 00:05:57,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 595 flow [2024-10-15 00:05:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 501 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-15 00:05:57,991 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 270 flow [2024-10-15 00:05:57,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-15 00:05:57,992 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-10-15 00:05:57,992 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 270 flow [2024-10-15 00:05:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:57,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:57,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:57,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:05:57,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:57,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 147329721, now seen corresponding path program 1 times [2024-10-15 00:05:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865487023] [2024-10-15 00:05:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865487023] [2024-10-15 00:05:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865487023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263013320] [2024-10-15 00:05:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:58,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:58,134 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) [2024-10-15 00:05:58,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:05:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:58,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:05:58,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:58,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:05:58,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263013320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:58,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:05:58,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-15 00:05:58,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190432190] [2024-10-15 00:05:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:58,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:58,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:05:58,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:05:58,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-15 00:05:58,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:58,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:05:58,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:58,334 INFO L124 PetriNetUnfolderBase]: 204/539 cut-off events. [2024-10-15 00:05:58,335 INFO L125 PetriNetUnfolderBase]: For 132/140 co-relation queries the response was YES. [2024-10-15 00:05:58,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 539 events. 204/539 cut-off events. For 132/140 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2994 event pairs, 132 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 1092. Up to 382 conditions per place. [2024-10-15 00:05:58,339 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 45 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-10-15 00:05:58,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 354 flow [2024-10-15 00:05:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-15 00:05:58,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-15 00:05:58,340 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 270 flow. Second operand 3 states and 84 transitions. [2024-10-15 00:05:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 354 flow [2024-10-15 00:05:58,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:58,344 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 252 flow [2024-10-15 00:05:58,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2024-10-15 00:05:58,345 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-10-15 00:05:58,345 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 252 flow [2024-10-15 00:05:58,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-10-15 00:05:58,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:58,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:58,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:05:58,549 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,SelfDestructingSolverStorable5 [2024-10-15 00:05:58,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:58,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1655825365, now seen corresponding path program 1 times [2024-10-15 00:05:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093112079] [2024-10-15 00:05:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093112079] [2024-10-15 00:05:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093112079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563199561] [2024-10-15 00:05:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:58,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:58,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:58,684 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) [2024-10-15 00:05:58,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:05:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:58,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:05:58,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:58,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:05:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563199561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:05:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:05:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758601060] [2024-10-15 00:05:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:58,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:05:58,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:05:58,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-15 00:05:58,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:58,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:05:58,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:58,908 INFO L124 PetriNetUnfolderBase]: 150/435 cut-off events. [2024-10-15 00:05:58,909 INFO L125 PetriNetUnfolderBase]: For 113/116 co-relation queries the response was YES. [2024-10-15 00:05:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 435 events. 150/435 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2312 event pairs, 96 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 912. Up to 298 conditions per place. [2024-10-15 00:05:58,912 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 1 changer transitions 1/60 dead transitions. [2024-10-15 00:05:58,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 332 flow [2024-10-15 00:05:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-15 00:05:58,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-10-15 00:05:58,914 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 252 flow. Second operand 3 states and 82 transitions. [2024-10-15 00:05:58,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 332 flow [2024-10-15 00:05:58,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:58,917 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 238 flow [2024-10-15 00:05:58,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-10-15 00:05:58,919 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-10-15 00:05:58,920 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 238 flow [2024-10-15 00:05:58,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-15 00:05:58,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:58,920 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:05:58,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:59,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:59,128 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:05:59,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash 731807084, now seen corresponding path program 2 times [2024-10-15 00:05:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:59,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832043920] [2024-10-15 00:05:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:59,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:59,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832043920] [2024-10-15 00:05:59,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832043920] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25026035] [2024-10-15 00:05:59,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:05:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:59,273 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) [2024-10-15 00:05:59,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:05:59,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:05:59,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:05:59,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:05:59,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:59,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:59,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25026035] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:59,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:59,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:05:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556374730] [2024-10-15 00:05:59,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:59,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:05:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:05:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:05:59,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:05:59,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:59,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:59,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:05:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:59,809 INFO L124 PetriNetUnfolderBase]: 132/378 cut-off events. [2024-10-15 00:05:59,809 INFO L125 PetriNetUnfolderBase]: For 158/161 co-relation queries the response was YES. [2024-10-15 00:05:59,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 378 events. 132/378 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1889 event pairs, 75 based on Foata normal form. 4/349 useless extension candidates. Maximal degree in co-relation 800. Up to 217 conditions per place. [2024-10-15 00:05:59,812 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 17 selfloop transitions, 33 changer transitions 0/64 dead transitions. [2024-10-15 00:05:59,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 357 flow [2024-10-15 00:05:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:05:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:05:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 437 transitions. [2024-10-15 00:05:59,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3641666666666667 [2024-10-15 00:05:59,816 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 238 flow. Second operand 24 states and 437 transitions. [2024-10-15 00:05:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 357 flow [2024-10-15 00:05:59,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 64 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:59,820 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 335 flow [2024-10-15 00:05:59,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=335, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-10-15 00:05:59,821 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2024-10-15 00:05:59,823 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 335 flow [2024-10-15 00:05:59,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:59,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:59,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:59,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:06:00,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:00,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:00,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -756417951, now seen corresponding path program 1 times [2024-10-15 00:06:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:00,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486164116] [2024-10-15 00:06:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:06:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486164116] [2024-10-15 00:06:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486164116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:06:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:06:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45447890] [2024-10-15 00:06:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:00,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:06:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:06:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:06:00,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:06:00,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-15 00:06:00,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:00,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:06:00,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:00,167 INFO L124 PetriNetUnfolderBase]: 122/345 cut-off events. [2024-10-15 00:06:00,167 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-15 00:06:00,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 345 events. 122/345 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1620 event pairs, 40 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 810. Up to 124 conditions per place. [2024-10-15 00:06:00,169 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 52 selfloop transitions, 2 changer transitions 1/70 dead transitions. [2024-10-15 00:06:00,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 462 flow [2024-10-15 00:06:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:06:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:06:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-15 00:06:00,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-10-15 00:06:00,171 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 335 flow. Second operand 3 states and 87 transitions. [2024-10-15 00:06:00,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 462 flow [2024-10-15 00:06:00,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 365 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-15 00:06:00,175 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 252 flow [2024-10-15 00:06:00,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-10-15 00:06:00,177 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-10-15 00:06:00,177 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 252 flow [2024-10-15 00:06:00,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-15 00:06:00,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:00,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:00,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:06:00,178 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:00,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2063574928, now seen corresponding path program 1 times [2024-10-15 00:06:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:00,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269624294] [2024-10-15 00:06:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:00,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:06:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269624294] [2024-10-15 00:06:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269624294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:00,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:06:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:06:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296601563] [2024-10-15 00:06:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:00,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:06:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:06:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:06:00,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:06:00,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-15 00:06:00,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:00,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:06:00,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:00,322 INFO L124 PetriNetUnfolderBase]: 104/305 cut-off events. [2024-10-15 00:06:00,323 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-15 00:06:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 305 events. 104/305 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1293 event pairs, 42 based on Foata normal form. 5/292 useless extension candidates. Maximal degree in co-relation 708. Up to 117 conditions per place. [2024-10-15 00:06:00,325 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 53 selfloop transitions, 2 changer transitions 3/73 dead transitions. [2024-10-15 00:06:00,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 394 flow [2024-10-15 00:06:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:06:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:06:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-15 00:06:00,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-10-15 00:06:00,326 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 252 flow. Second operand 3 states and 89 transitions. [2024-10-15 00:06:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 394 flow [2024-10-15 00:06:00,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 387 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-15 00:06:00,329 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 260 flow [2024-10-15 00:06:00,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-15 00:06:00,330 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-10-15 00:06:00,330 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 260 flow [2024-10-15 00:06:00,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-15 00:06:00,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:00,330 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:06:00,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:06:00,331 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:00,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1733778148, now seen corresponding path program 1 times [2024-10-15 00:06:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70544427] [2024-10-15 00:06:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70544427] [2024-10-15 00:06:00,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70544427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546498902] [2024-10-15 00:06:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:00,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:00,537 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) [2024-10-15 00:06:00,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:06:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:00,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:06:00,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:00,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546498902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:00,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:00,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:06:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347197887] [2024-10-15 00:06:00,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:00,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:06:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:06:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:06:00,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:06:00,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 260 flow. Second operand has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-10-15 00:06:00,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:00,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:06:00,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:01,366 INFO L124 PetriNetUnfolderBase]: 125/393 cut-off events. [2024-10-15 00:06:01,367 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2024-10-15 00:06:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 393 events. 125/393 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1675 event pairs, 72 based on Foata normal form. 14/374 useless extension candidates. Maximal degree in co-relation 994. Up to 206 conditions per place. [2024-10-15 00:06:01,369 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 22 selfloop transitions, 72 changer transitions 0/108 dead transitions. [2024-10-15 00:06:01,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 658 flow [2024-10-15 00:06:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:06:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:06:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-10-15 00:06:01,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39615384615384613 [2024-10-15 00:06:01,372 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 260 flow. Second operand 26 states and 515 transitions. [2024-10-15 00:06:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 658 flow [2024-10-15 00:06:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 650 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:06:01,376 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 658 flow [2024-10-15 00:06:01,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-10-15 00:06:01,377 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-10-15 00:06:01,377 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 658 flow [2024-10-15 00:06:01,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 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) [2024-10-15 00:06:01,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:01,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:01,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:06:01,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 00:06:01,579 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:01,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash -755873469, now seen corresponding path program 1 times [2024-10-15 00:06:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:01,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667811290] [2024-10-15 00:06:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667811290] [2024-10-15 00:06:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667811290] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891459058] [2024-10-15 00:06:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:02,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:02,025 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) [2024-10-15 00:06:02,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:06:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:02,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:06:02,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:02,220 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 [2024-10-15 00:06:02,576 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:06:02,577 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 [2024-10-15 00:06:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:02,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:02,817 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 [2024-10-15 00:06:02,824 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 [2024-10-15 00:06:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:02,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891459058] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:02,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-15 00:06:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39121342] [2024-10-15 00:06:02,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:02,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 00:06:02,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 00:06:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-10-15 00:06:03,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-15 00:06:03,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 658 flow. Second operand has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-10-15 00:06:03,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:03,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-15 00:06:03,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:04,345 INFO L124 PetriNetUnfolderBase]: 377/874 cut-off events. [2024-10-15 00:06:04,345 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-15 00:06:04,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 874 events. 377/874 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4567 event pairs, 63 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 2209. Up to 134 conditions per place. [2024-10-15 00:06:04,353 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 103 selfloop transitions, 81 changer transitions 11/205 dead transitions. [2024-10-15 00:06:04,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 1330 flow [2024-10-15 00:06:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 00:06:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-15 00:06:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 372 transitions. [2024-10-15 00:06:04,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372 [2024-10-15 00:06:04,357 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 658 flow. Second operand 20 states and 372 transitions. [2024-10-15 00:06:04,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 1330 flow [2024-10-15 00:06:04,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1145 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-15 00:06:04,367 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 682 flow [2024-10-15 00:06:04,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-10-15 00:06:04,370 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2024-10-15 00:06:04,371 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 682 flow [2024-10-15 00:06:04,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.791666666666666) internal successors, (331), 24 states have internal predecessors, (331), 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) [2024-10-15 00:06:04,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:04,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:04,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:06:04,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:04,573 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:04,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1551120531, now seen corresponding path program 1 times [2024-10-15 00:06:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499649708] [2024-10-15 00:06:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499649708] [2024-10-15 00:06:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499649708] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760708844] [2024-10-15 00:06:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:05,288 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) [2024-10-15 00:06:05,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:06:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:05,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:06:05,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:05,459 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 [2024-10-15 00:06:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:06:05,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:06:05,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760708844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:05,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:06:05,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-10-15 00:06:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926333668] [2024-10-15 00:06:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:05,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:06:05,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:05,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:06:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:06:05,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-15 00:06:05,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:05,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:05,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-15 00:06:05,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:05,799 INFO L124 PetriNetUnfolderBase]: 495/1129 cut-off events. [2024-10-15 00:06:05,800 INFO L125 PetriNetUnfolderBase]: For 951/975 co-relation queries the response was YES. [2024-10-15 00:06:05,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1129 events. 495/1129 cut-off events. For 951/975 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6188 event pairs, 84 based on Foata normal form. 16/1096 useless extension candidates. Maximal degree in co-relation 2991. Up to 320 conditions per place. [2024-10-15 00:06:05,809 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 143 selfloop transitions, 7 changer transitions 5/172 dead transitions. [2024-10-15 00:06:05,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1211 flow [2024-10-15 00:06:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:06:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:06:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-10-15 00:06:05,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-15 00:06:05,811 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 682 flow. Second operand 7 states and 180 transitions. [2024-10-15 00:06:05,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1211 flow [2024-10-15 00:06:05,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 172 transitions, 1182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-15 00:06:05,820 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 703 flow [2024-10-15 00:06:05,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2024-10-15 00:06:05,822 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 67 predicate places. [2024-10-15 00:06:05,822 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 703 flow [2024-10-15 00:06:05,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:05,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:05,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:05,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:06:06,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:06,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:06,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1957671331, now seen corresponding path program 1 times [2024-10-15 00:06:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065831458] [2024-10-15 00:06:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065831458] [2024-10-15 00:06:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065831458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379047253] [2024-10-15 00:06:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:06,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:06,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:06,448 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) [2024-10-15 00:06:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:06:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:06,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 00:06:06,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:06,584 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 [2024-10-15 00:06:06,621 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 [2024-10-15 00:06:06,703 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:06:06,704 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 [2024-10-15 00:06:06,744 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 [2024-10-15 00:06:06,876 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 [2024-10-15 00:06:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:06,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:07,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:07,493 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 [2024-10-15 00:06:07,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:07,520 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 [2024-10-15 00:06:07,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:07,541 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 [2024-10-15 00:06:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379047253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:07,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-10-15 00:06:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460865446] [2024-10-15 00:06:07,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:07,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-15 00:06:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-15 00:06:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=513, Unknown=1, NotChecked=0, Total=600 [2024-10-15 00:06:08,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-10-15 00:06:08,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 703 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-10-15 00:06:08,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:08,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-10-15 00:06:08,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:11,849 INFO L124 PetriNetUnfolderBase]: 2741/5152 cut-off events. [2024-10-15 00:06:11,850 INFO L125 PetriNetUnfolderBase]: For 3966/4064 co-relation queries the response was YES. [2024-10-15 00:06:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14450 conditions, 5152 events. 2741/5152 cut-off events. For 3966/4064 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 32873 event pairs, 371 based on Foata normal form. 154/4786 useless extension candidates. Maximal degree in co-relation 14418. Up to 1178 conditions per place. [2024-10-15 00:06:11,898 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 399 selfloop transitions, 161 changer transitions 35/603 dead transitions. [2024-10-15 00:06:11,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 603 transitions, 3948 flow [2024-10-15 00:06:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-15 00:06:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-15 00:06:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 694 transitions. [2024-10-15 00:06:11,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3017391304347826 [2024-10-15 00:06:11,905 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 703 flow. Second operand 46 states and 694 transitions. [2024-10-15 00:06:11,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 603 transitions, 3948 flow [2024-10-15 00:06:11,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 603 transitions, 3944 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:06:11,942 INFO L231 Difference]: Finished difference. Result has 185 places, 260 transitions, 2219 flow [2024-10-15 00:06:11,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2219, PETRI_PLACES=185, PETRI_TRANSITIONS=260} [2024-10-15 00:06:11,945 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-10-15 00:06:11,945 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 260 transitions, 2219 flow [2024-10-15 00:06:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2024-10-15 00:06:11,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:11,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:11,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:06:12,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 00:06:12,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:12,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash -138230339, now seen corresponding path program 1 times [2024-10-15 00:06:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304410852] [2024-10-15 00:06:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304410852] [2024-10-15 00:06:12,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304410852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219377665] [2024-10-15 00:06:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:12,529 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) [2024-10-15 00:06:12,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:06:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:12,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:06:12,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:12,687 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-15 00:06:12,823 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 [2024-10-15 00:06:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:12,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:13,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-10-15 00:06:13,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:13,170 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 46 treesize of output 42 [2024-10-15 00:06:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219377665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:13,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-15 00:06:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419867114] [2024-10-15 00:06:13,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:13,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 00:06:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 00:06:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-15 00:06:13,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-10-15 00:06:13,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 260 transitions, 2219 flow. Second operand has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:13,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:13,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-10-15 00:06:13,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:16,480 INFO L124 PetriNetUnfolderBase]: 3226/6873 cut-off events. [2024-10-15 00:06:16,481 INFO L125 PetriNetUnfolderBase]: For 48967/49245 co-relation queries the response was YES. [2024-10-15 00:06:16,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28428 conditions, 6873 events. 3226/6873 cut-off events. For 48967/49245 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55308 event pairs, 241 based on Foata normal form. 361/7169 useless extension candidates. Maximal degree in co-relation 28370. Up to 1227 conditions per place. [2024-10-15 00:06:16,587 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 333 selfloop transitions, 272 changer transitions 8/641 dead transitions. [2024-10-15 00:06:16,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 641 transitions, 6387 flow [2024-10-15 00:06:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-15 00:06:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-15 00:06:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 723 transitions. [2024-10-15 00:06:16,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38052631578947366 [2024-10-15 00:06:16,590 INFO L175 Difference]: Start difference. First operand has 185 places, 260 transitions, 2219 flow. Second operand 38 states and 723 transitions. [2024-10-15 00:06:16,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 641 transitions, 6387 flow [2024-10-15 00:06:16,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 641 transitions, 6126 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-10-15 00:06:16,730 INFO L231 Difference]: Finished difference. Result has 228 places, 457 transitions, 4790 flow [2024-10-15 00:06:16,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4790, PETRI_PLACES=228, PETRI_TRANSITIONS=457} [2024-10-15 00:06:16,731 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 179 predicate places. [2024-10-15 00:06:16,732 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 457 transitions, 4790 flow [2024-10-15 00:06:16,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:16,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:16,732 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:16,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 00:06:16,933 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,SelfDestructingSolverStorable14 [2024-10-15 00:06:16,933 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:16,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1515227615, now seen corresponding path program 2 times [2024-10-15 00:06:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319856522] [2024-10-15 00:06:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319856522] [2024-10-15 00:06:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319856522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443923118] [2024-10-15 00:06:18,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:06:18,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:18,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:18,809 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) [2024-10-15 00:06:18,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:06:18,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:06:18,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:06:18,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 00:06:18,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:19,057 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 [2024-10-15 00:06:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-15 00:06:19,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:06:19,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443923118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:06:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 18 [2024-10-15 00:06:19,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072966172] [2024-10-15 00:06:19,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:19,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:06:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:06:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:06:19,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-15 00:06:19,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 457 transitions, 4790 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:19,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:19,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-15 00:06:19,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:21,155 INFO L124 PetriNetUnfolderBase]: 3474/7473 cut-off events. [2024-10-15 00:06:21,155 INFO L125 PetriNetUnfolderBase]: For 79070/79454 co-relation queries the response was YES. [2024-10-15 00:06:21,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36343 conditions, 7473 events. 3474/7473 cut-off events. For 79070/79454 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61804 event pairs, 529 based on Foata normal form. 243/7663 useless extension candidates. Maximal degree in co-relation 36274. Up to 2431 conditions per place. [2024-10-15 00:06:21,242 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 425 selfloop transitions, 100 changer transitions 4/558 dead transitions. [2024-10-15 00:06:21,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 558 transitions, 6820 flow [2024-10-15 00:06:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:06:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:06:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-10-15 00:06:21,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-10-15 00:06:21,243 INFO L175 Difference]: Start difference. First operand has 228 places, 457 transitions, 4790 flow. Second operand 7 states and 183 transitions. [2024-10-15 00:06:21,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 558 transitions, 6820 flow [2024-10-15 00:06:21,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 558 transitions, 6319 flow, removed 186 selfloop flow, removed 11 redundant places. [2024-10-15 00:06:21,571 INFO L231 Difference]: Finished difference. Result has 221 places, 449 transitions, 4573 flow [2024-10-15 00:06:21,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4573, PETRI_PLACES=221, PETRI_TRANSITIONS=449} [2024-10-15 00:06:21,572 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2024-10-15 00:06:21,572 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 449 transitions, 4573 flow [2024-10-15 00:06:21,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:21,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:21,573 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:21,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 00:06:21,773 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,SelfDestructingSolverStorable15 [2024-10-15 00:06:21,774 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:21,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2046179802, now seen corresponding path program 1 times [2024-10-15 00:06:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030121904] [2024-10-15 00:06:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:21,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030121904] [2024-10-15 00:06:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030121904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:21,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132778597] [2024-10-15 00:06:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:21,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:21,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:21,947 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) [2024-10-15 00:06:21,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:06:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:22,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:06:22,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:22,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:22,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132778597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:22,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:22,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-15 00:06:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842557921] [2024-10-15 00:06:22,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:22,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:06:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:06:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:06:22,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:06:22,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 449 transitions, 4573 flow. Second operand has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:22,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:22,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:06:22,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:23,656 INFO L124 PetriNetUnfolderBase]: 1986/4847 cut-off events. [2024-10-15 00:06:23,657 INFO L125 PetriNetUnfolderBase]: For 57573/57989 co-relation queries the response was YES. [2024-10-15 00:06:23,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22973 conditions, 4847 events. 1986/4847 cut-off events. For 57573/57989 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 40375 event pairs, 837 based on Foata normal form. 231/4999 useless extension candidates. Maximal degree in co-relation 22906. Up to 2022 conditions per place. [2024-10-15 00:06:23,716 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 336 selfloop transitions, 64 changer transitions 3/443 dead transitions. [2024-10-15 00:06:23,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 443 transitions, 5232 flow [2024-10-15 00:06:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 00:06:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-15 00:06:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-10-15 00:06:23,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-10-15 00:06:23,718 INFO L175 Difference]: Start difference. First operand has 221 places, 449 transitions, 4573 flow. Second operand 12 states and 249 transitions. [2024-10-15 00:06:23,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 443 transitions, 5232 flow [2024-10-15 00:06:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 443 transitions, 5087 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-10-15 00:06:23,907 INFO L231 Difference]: Finished difference. Result has 220 places, 375 transitions, 3819 flow [2024-10-15 00:06:23,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=220, PETRI_TRANSITIONS=375} [2024-10-15 00:06:23,908 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-15 00:06:23,909 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 375 transitions, 3819 flow [2024-10-15 00:06:23,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:23,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:23,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:23,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:06:24,110 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,SelfDestructingSolverStorable16 [2024-10-15 00:06:24,111 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:24,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash -369533526, now seen corresponding path program 2 times [2024-10-15 00:06:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095732248] [2024-10-15 00:06:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:25,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095732248] [2024-10-15 00:06:25,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095732248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39077221] [2024-10-15 00:06:25,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:06:25,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:25,082 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) [2024-10-15 00:06:25,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:06:25,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:06:25,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:06:25,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:06:25,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:25,280 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 [2024-10-15 00:06:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 00:06:25,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:06:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39077221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:06:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-10-15 00:06:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554178640] [2024-10-15 00:06:25,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:25,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:06:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:06:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:06:25,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-15 00:06:25,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 375 transitions, 3819 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:25,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:25,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-15 00:06:25,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:26,579 INFO L124 PetriNetUnfolderBase]: 2405/5352 cut-off events. [2024-10-15 00:06:26,579 INFO L125 PetriNetUnfolderBase]: For 54031/54177 co-relation queries the response was YES. [2024-10-15 00:06:26,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24970 conditions, 5352 events. 2405/5352 cut-off events. For 54031/54177 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42303 event pairs, 305 based on Foata normal form. 122/5414 useless extension candidates. Maximal degree in co-relation 24904. Up to 2696 conditions per place. [2024-10-15 00:06:26,657 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 348 selfloop transitions, 64 changer transitions 5/443 dead transitions. [2024-10-15 00:06:26,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 443 transitions, 5658 flow [2024-10-15 00:06:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:06:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:06:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-15 00:06:26,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-15 00:06:26,660 INFO L175 Difference]: Start difference. First operand has 220 places, 375 transitions, 3819 flow. Second operand 7 states and 175 transitions. [2024-10-15 00:06:26,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 443 transitions, 5658 flow [2024-10-15 00:06:26,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 443 transitions, 5517 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-10-15 00:06:26,875 INFO L231 Difference]: Finished difference. Result has 216 places, 374 transitions, 3856 flow [2024-10-15 00:06:26,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3856, PETRI_PLACES=216, PETRI_TRANSITIONS=374} [2024-10-15 00:06:26,876 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 167 predicate places. [2024-10-15 00:06:26,876 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 374 transitions, 3856 flow [2024-10-15 00:06:26,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2024-10-15 00:06:26,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:26,877 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:26,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-15 00:06:27,081 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,SelfDestructingSolverStorable17 [2024-10-15 00:06:27,082 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:27,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2067056519, now seen corresponding path program 1 times [2024-10-15 00:06:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232320955] [2024-10-15 00:06:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:27,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:27,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232320955] [2024-10-15 00:06:27,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232320955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:27,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252831878] [2024-10-15 00:06:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:27,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:27,240 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) [2024-10-15 00:06:27,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 00:06:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:27,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:06:27,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:27,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252831878] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:27,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:27,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-15 00:06:27,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801706483] [2024-10-15 00:06:27,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:27,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:06:27,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:06:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:06:27,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:06:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 374 transitions, 3856 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:06:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:28,468 INFO L124 PetriNetUnfolderBase]: 1585/4044 cut-off events. [2024-10-15 00:06:28,469 INFO L125 PetriNetUnfolderBase]: For 38562/38803 co-relation queries the response was YES. [2024-10-15 00:06:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18740 conditions, 4044 events. 1585/4044 cut-off events. For 38562/38803 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 32760 event pairs, 748 based on Foata normal form. 118/4094 useless extension candidates. Maximal degree in co-relation 18676. Up to 1923 conditions per place. [2024-10-15 00:06:28,592 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 209 selfloop transitions, 99 changer transitions 24/371 dead transitions. [2024-10-15 00:06:28,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 371 transitions, 4476 flow [2024-10-15 00:06:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:06:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:06:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-10-15 00:06:28,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-10-15 00:06:28,594 INFO L175 Difference]: Start difference. First operand has 216 places, 374 transitions, 3856 flow. Second operand 8 states and 175 transitions. [2024-10-15 00:06:28,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 371 transitions, 4476 flow [2024-10-15 00:06:28,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 371 transitions, 4376 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-10-15 00:06:28,702 INFO L231 Difference]: Finished difference. Result has 220 places, 327 transitions, 3520 flow [2024-10-15 00:06:28,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3520, PETRI_PLACES=220, PETRI_TRANSITIONS=327} [2024-10-15 00:06:28,703 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-15 00:06:28,703 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 327 transitions, 3520 flow [2024-10-15 00:06:28,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:28,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:28,704 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] [2024-10-15 00:06:28,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-15 00:06:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:28,905 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash 442907941, now seen corresponding path program 2 times [2024-10-15 00:06:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748901437] [2024-10-15 00:06:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:29,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748901437] [2024-10-15 00:06:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748901437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875945933] [2024-10-15 00:06:29,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:06:29,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:29,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:29,076 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) [2024-10-15 00:06:29,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 00:06:29,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:06:29,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:06:29,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:06:29,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:29,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875945933] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:29,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-10-15 00:06:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877013451] [2024-10-15 00:06:29,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:29,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 00:06:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 00:06:29,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-10-15 00:06:29,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:06:29,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 327 transitions, 3520 flow. Second operand has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:29,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:29,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:06:29,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:30,520 INFO L124 PetriNetUnfolderBase]: 1298/3285 cut-off events. [2024-10-15 00:06:30,520 INFO L125 PetriNetUnfolderBase]: For 29347/29545 co-relation queries the response was YES. [2024-10-15 00:06:30,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 3285 events. 1298/3285 cut-off events. For 29347/29545 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25192 event pairs, 321 based on Foata normal form. 76/3311 useless extension candidates. Maximal degree in co-relation 15189. Up to 1709 conditions per place. [2024-10-15 00:06:30,559 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 156 selfloop transitions, 99 changer transitions 55/343 dead transitions. [2024-10-15 00:06:30,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 343 transitions, 4152 flow [2024-10-15 00:06:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:06:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-15 00:06:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-10-15 00:06:30,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43272727272727274 [2024-10-15 00:06:30,561 INFO L175 Difference]: Start difference. First operand has 220 places, 327 transitions, 3520 flow. Second operand 11 states and 238 transitions. [2024-10-15 00:06:30,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 343 transitions, 4152 flow [2024-10-15 00:06:30,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 343 transitions, 3918 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-15 00:06:30,649 INFO L231 Difference]: Finished difference. Result has 220 places, 283 transitions, 3036 flow [2024-10-15 00:06:30,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=220, PETRI_TRANSITIONS=283} [2024-10-15 00:06:30,651 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-10-15 00:06:30,651 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 283 transitions, 3036 flow [2024-10-15 00:06:30,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.285714285714285) internal successors, (384), 21 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:06:30,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:30,651 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:30,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-15 00:06:30,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:30,852 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:30,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash 755845743, now seen corresponding path program 2 times [2024-10-15 00:06:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:30,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307807786] [2024-10-15 00:06:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307807786] [2024-10-15 00:06:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307807786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488782891] [2024-10-15 00:06:31,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:06:31,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:31,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:31,018 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) [2024-10-15 00:06:31,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 00:06:31,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:06:31,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:06:31,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:06:31,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:31,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:06:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488782891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:06:31,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:06:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-15 00:06:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420877619] [2024-10-15 00:06:31,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:06:31,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:06:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:06:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:06:31,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-15 00:06:31,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 283 transitions, 3036 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-10-15 00:06:31,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:31,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-15 00:06:31,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:31,986 INFO L124 PetriNetUnfolderBase]: 944/2321 cut-off events. [2024-10-15 00:06:31,986 INFO L125 PetriNetUnfolderBase]: For 24682/24968 co-relation queries the response was YES. [2024-10-15 00:06:32,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2321 events. 944/2321 cut-off events. For 24682/24968 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15824 event pairs, 244 based on Foata normal form. 64/2347 useless extension candidates. Maximal degree in co-relation 11086. Up to 1056 conditions per place. [2024-10-15 00:06:32,010 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 119 selfloop transitions, 64 changer transitions 78/285 dead transitions. [2024-10-15 00:06:32,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 285 transitions, 3425 flow [2024-10-15 00:06:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 00:06:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-15 00:06:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 275 transitions. [2024-10-15 00:06:32,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-10-15 00:06:32,015 INFO L175 Difference]: Start difference. First operand has 220 places, 283 transitions, 3036 flow. Second operand 13 states and 275 transitions. [2024-10-15 00:06:32,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 285 transitions, 3425 flow [2024-10-15 00:06:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 285 transitions, 3116 flow, removed 49 selfloop flow, removed 17 redundant places. [2024-10-15 00:06:32,071 INFO L231 Difference]: Finished difference. Result has 192 places, 203 transitions, 2046 flow [2024-10-15 00:06:32,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=192, PETRI_TRANSITIONS=203} [2024-10-15 00:06:32,072 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 143 predicate places. [2024-10-15 00:06:32,072 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 203 transitions, 2046 flow [2024-10-15 00:06:32,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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) [2024-10-15 00:06:32,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:32,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:32,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-15 00:06:32,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:32,273 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:32,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1694712449, now seen corresponding path program 1 times [2024-10-15 00:06:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708298013] [2024-10-15 00:06:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 00:06:32,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:32,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708298013] [2024-10-15 00:06:32,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708298013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:32,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:06:32,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:06:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943563859] [2024-10-15 00:06:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:32,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:06:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:06:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:06:32,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:06:32,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 203 transitions, 2046 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-15 00:06:32,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:32,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:06:32,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:32,659 INFO L124 PetriNetUnfolderBase]: 778/1898 cut-off events. [2024-10-15 00:06:32,660 INFO L125 PetriNetUnfolderBase]: For 12283/12600 co-relation queries the response was YES. [2024-10-15 00:06:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 1898 events. 778/1898 cut-off events. For 12283/12600 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12057 event pairs, 248 based on Foata normal form. 72/1912 useless extension candidates. Maximal degree in co-relation 8275. Up to 597 conditions per place. [2024-10-15 00:06:32,678 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 203 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2024-10-15 00:06:32,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2785 flow [2024-10-15 00:06:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:06:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:06:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-15 00:06:32,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-15 00:06:32,681 INFO L175 Difference]: Start difference. First operand has 192 places, 203 transitions, 2046 flow. Second operand 4 states and 120 transitions. [2024-10-15 00:06:32,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2785 flow [2024-10-15 00:06:32,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 240 transitions, 2579 flow, removed 39 selfloop flow, removed 18 redundant places. [2024-10-15 00:06:32,704 INFO L231 Difference]: Finished difference. Result has 164 places, 201 transitions, 1909 flow [2024-10-15 00:06:32,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=164, PETRI_TRANSITIONS=201} [2024-10-15 00:06:32,705 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 115 predicate places. [2024-10-15 00:06:32,706 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 201 transitions, 1909 flow [2024-10-15 00:06:32,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-15 00:06:32,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:32,706 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:06:32,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-15 00:06:32,706 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:32,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 744012687, now seen corresponding path program 3 times [2024-10-15 00:06:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101897200] [2024-10-15 00:06:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 00:06:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101897200] [2024-10-15 00:06:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101897200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:06:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:06:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:06:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727103800] [2024-10-15 00:06:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:06:32,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:06:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:06:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:06:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:06:32,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-15 00:06:32,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2024-10-15 00:06:32,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:06:32,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-15 00:06:32,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:06:33,171 INFO L124 PetriNetUnfolderBase]: 939/2402 cut-off events. [2024-10-15 00:06:33,171 INFO L125 PetriNetUnfolderBase]: For 11463/11841 co-relation queries the response was YES. [2024-10-15 00:06:33,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 2402 events. 939/2402 cut-off events. For 11463/11841 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17223 event pairs, 335 based on Foata normal form. 89/2406 useless extension candidates. Maximal degree in co-relation 9635. Up to 778 conditions per place. [2024-10-15 00:06:33,208 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 200 selfloop transitions, 22 changer transitions 0/246 dead transitions. [2024-10-15 00:06:33,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 2771 flow [2024-10-15 00:06:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:06:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:06:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-10-15 00:06:33,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-10-15 00:06:33,210 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 1909 flow. Second operand 4 states and 122 transitions. [2024-10-15 00:06:33,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 2771 flow [2024-10-15 00:06:33,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 246 transitions, 2747 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-15 00:06:33,259 INFO L231 Difference]: Finished difference. Result has 168 places, 206 transitions, 2027 flow [2024-10-15 00:06:33,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=168, PETRI_TRANSITIONS=206} [2024-10-15 00:06:33,262 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 119 predicate places. [2024-10-15 00:06:33,263 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 206 transitions, 2027 flow [2024-10-15 00:06:33,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2024-10-15 00:06:33,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:06:33,263 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-15 00:06:33,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-15 00:06:33,264 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-10-15 00:06:33,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:06:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash -583904322, now seen corresponding path program 1 times [2024-10-15 00:06:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:06:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536732167] [2024-10-15 00:06:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:06:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:06:34,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:06:34,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536732167] [2024-10-15 00:06:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536732167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:06:34,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891138861] [2024-10-15 00:06:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:06:34,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:06:34,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:06:34,056 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) [2024-10-15 00:06:34,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 00:06:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:06:34,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-15 00:06:34,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:06:34,178 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 [2024-10-15 00:06:34,308 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 [2024-10-15 00:06:34,381 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:06:34,382 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 [2024-10-15 00:06:34,443 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 23 treesize of output 1 [2024-10-15 00:06:34,628 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-10-15 00:06:34,628 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 1 case distinctions, treesize of input 37 treesize of output 21 [2024-10-15 00:06:36,447 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:06:36,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2024-10-15 00:06:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:06:36,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:06:50,915 INFO L349 Elim1Store]: treesize reduction 35, result has 63.2 percent of original size [2024-10-15 00:06:50,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3081 treesize of output 2860 [2024-10-15 00:06:51,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:51,001 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 989 treesize of output 961 [2024-10-15 00:06:51,915 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 265 treesize of output 247 [2024-10-15 00:06:51,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:06:51,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 239 treesize of output 182 [2024-10-15 00:06:53,141 INFO L349 Elim1Store]: treesize reduction 5, result has 93.6 percent of original size [2024-10-15 00:06:53,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1707 treesize of output 1430 [2024-10-15 00:07:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:07:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891138861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:07:03,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:07:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 54 [2024-10-15 00:07:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263307129] [2024-10-15 00:07:03,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:07:03,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-15 00:07:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:07:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-15 00:07:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2764, Unknown=2, NotChecked=0, Total=3080 [2024-10-15 00:07:07,431 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]