./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:24:52,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:24:53,067 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:24:53,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:24:53,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:24:53,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:24:53,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:24:53,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:24:53,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:24:53,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:24:53,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:24:53,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:24:53,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:24:53,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:24:53,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:24:53,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:24:53,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:24:53,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:24:53,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:24:53,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:24:53,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:24:53,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:24:53,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:24:53,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:24:53,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:24:53,134 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:24:53,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:24:53,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:24:53,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:24:53,135 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:24:53,136 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:24:53,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:24:53,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:24:53,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:24:53,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:24:53,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:24:53,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:24:53,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:24:53,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:24:53,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:24:53,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:24:53,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:24:53,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:24:53,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:24:53,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-11-10 22:24:53,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:24:53,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:24:53,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:24:53,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:24:53,422 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:24:53,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-10 22:24:54,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:24:55,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:24:55,106 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-10 22:24:55,113 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb6fa8df/edaeda0b21244efc88a1d65824205e55/FLAG027fca837 [2024-11-10 22:24:55,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb6fa8df/edaeda0b21244efc88a1d65824205e55 [2024-11-10 22:24:55,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:24:55,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:24:55,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:24:55,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:24:55,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:24:55,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18aa55bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55, skipping insertion in model container [2024-11-10 22:24:55,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:24:55,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:24:55,408 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:24:55,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:24:55,448 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:24:55,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55 WrapperNode [2024-11-10 22:24:55,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:24:55,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:24:55,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:24:55,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:24:55,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,490 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2024-11-10 22:24:55,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:24:55,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:24:55,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:24:55,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:24:55,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,528 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 22:24:55,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:24:55,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:24:55,543 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:24:55,543 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:24:55,544 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (1/1) ... [2024-11-10 22:24:55,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:24:55,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:55,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:24:55,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:24:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:24:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:24:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:24:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:24:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:24:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:24:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:24:55,641 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:24:55,760 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:24:55,763 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:24:56,098 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:24:56,099 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:24:56,443 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:24:56,448 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:24:56,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:56 BoogieIcfgContainer [2024-11-10 22:24:56,449 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:24:56,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:24:56,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:24:56,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:24:56,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:24:55" (1/3) ... [2024-11-10 22:24:56,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5283f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:56, skipping insertion in model container [2024-11-10 22:24:56,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:55" (2/3) ... [2024-11-10 22:24:56,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab5283f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:56, skipping insertion in model container [2024-11-10 22:24:56,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:56" (3/3) ... [2024-11-10 22:24:56,467 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-11-10 22:24:56,508 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:24:56,510 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-10 22:24:56,510 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:24:56,600 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:24:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 124 flow [2024-11-10 22:24:56,672 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2024-11-10 22:24:56,672 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:24:56,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 6/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 154 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-10 22:24:56,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 124 flow [2024-11-10 22:24:56,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 111 flow [2024-11-10 22:24:56,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:24:56,698 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;@64d3cefe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:24:56,698 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-10 22:24:56,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:24:56,702 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:24:56,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:24:56,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:56,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:24:56,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:56,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 16018401, now seen corresponding path program 1 times [2024-11-10 22:24:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840128453] [2024-11-10 22:24:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840128453] [2024-11-10 22:24:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840128453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:57,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:57,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41406723] [2024-11-10 22:24:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:57,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:57,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:57,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 22:24:57,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:57,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 22:24:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:57,333 INFO L124 PetriNetUnfolderBase]: 219/447 cut-off events. [2024-11-10 22:24:57,333 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 22:24:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 447 events. 219/447 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 2708 event pairs, 182 based on Foata normal form. 38/293 useless extension candidates. Maximal degree in co-relation 783. Up to 377 conditions per place. [2024-11-10 22:24:57,339 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 26 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-10 22:24:57,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 163 flow [2024-11-10 22:24:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-10 22:24:57,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-10 22:24:57,354 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 111 flow. Second operand 4 states and 116 transitions. [2024-11-10 22:24:57,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 163 flow [2024-11-10 22:24:57,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:24:57,362 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 121 flow [2024-11-10 22:24:57,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-11-10 22:24:57,369 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-10 22:24:57,370 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 121 flow [2024-11-10 22:24:57,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:57,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:24:57,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:24:57,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:57,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1475590335, now seen corresponding path program 1 times [2024-11-10 22:24:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694360935] [2024-11-10 22:24:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:57,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694360935] [2024-11-10 22:24:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694360935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:57,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342106639] [2024-11-10 22:24:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:57,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:57,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:57,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:57,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:24:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:57,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:57,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:57,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342106639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:57,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:24:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675085171] [2024-11-10 22:24:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:24:57,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 22:24:57,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:57,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 22:24:57,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:57,919 INFO L124 PetriNetUnfolderBase]: 219/446 cut-off events. [2024-11-10 22:24:57,919 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 22:24:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 446 events. 219/446 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 2722 event pairs, 182 based on Foata normal form. 1/255 useless extension candidates. Maximal degree in co-relation 827. Up to 372 conditions per place. [2024-11-10 22:24:57,927 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 22 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-11-10 22:24:57,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 175 flow [2024-11-10 22:24:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-10 22:24:57,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-10 22:24:57,932 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 121 flow. Second operand 6 states and 144 transitions. [2024-11-10 22:24:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 175 flow [2024-11-10 22:24:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:57,936 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 128 flow [2024-11-10 22:24:57,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-10 22:24:57,937 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-10 22:24:57,939 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 128 flow [2024-11-10 22:24:57,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:57,940 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:24:57,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:24:58,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:58,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:58,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1501339443, now seen corresponding path program 1 times [2024-11-10 22:24:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408225013] [2024-11-10 22:24:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408225013] [2024-11-10 22:24:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408225013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827673176] [2024-11-10 22:24:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:58,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:58,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:58,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:24:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:58,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:58,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:58,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827673176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:58,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:58,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:24:58,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020058804] [2024-11-10 22:24:58,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:58,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:58,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 22:24:58,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 128 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:58,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:58,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 22:24:58,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:58,644 INFO L124 PetriNetUnfolderBase]: 222/464 cut-off events. [2024-11-10 22:24:58,644 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-10 22:24:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 464 events. 222/464 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 2891 event pairs, 182 based on Foata normal form. 3/276 useless extension candidates. Maximal degree in co-relation 828. Up to 379 conditions per place. [2024-11-10 22:24:58,648 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 25 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-11-10 22:24:58,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 258 flow [2024-11-10 22:24:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-11-10 22:24:58,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-11-10 22:24:58,651 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 128 flow. Second operand 10 states and 231 transitions. [2024-11-10 22:24:58,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 258 flow [2024-11-10 22:24:58,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 228 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:24:58,654 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 196 flow [2024-11-10 22:24:58,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-10 22:24:58,655 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-10 22:24:58,655 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 196 flow [2024-11-10 22:24:58,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:58,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:58,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:58,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:58,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:24:58,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:58,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1887456112, now seen corresponding path program 1 times [2024-11-10 22:24:58,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786058958] [2024-11-10 22:24:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:58,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786058958] [2024-11-10 22:24:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786058958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:58,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:58,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:24:58,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377815496] [2024-11-10 22:24:58,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:58,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:24:58,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:24:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:24:59,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 22:24:59,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:59,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:59,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 22:24:59,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:59,221 INFO L124 PetriNetUnfolderBase]: 316/708 cut-off events. [2024-11-10 22:24:59,222 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-10 22:24:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 708 events. 316/708 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4385 event pairs, 226 based on Foata normal form. 18/476 useless extension candidates. Maximal degree in co-relation 1306. Up to 431 conditions per place. [2024-11-10 22:24:59,226 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 58 selfloop transitions, 6 changer transitions 2/82 dead transitions. [2024-11-10 22:24:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 388 flow [2024-11-10 22:24:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-11-10 22:24:59,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-11-10 22:24:59,228 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 196 flow. Second operand 6 states and 172 transitions. [2024-11-10 22:24:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 388 flow [2024-11-10 22:24:59,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 377 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:59,232 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 219 flow [2024-11-10 22:24:59,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-10 22:24:59,233 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-11-10 22:24:59,233 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 219 flow [2024-11-10 22:24:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:59,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:59,233 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:59,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:24:59,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:59,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2100657168, now seen corresponding path program 1 times [2024-11-10 22:24:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720725758] [2024-11-10 22:24:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720725758] [2024-11-10 22:24:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720725758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:24:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849897707] [2024-11-10 22:24:59,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:59,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:24:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:59,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:24:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:24:59,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-10 22:24:59,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:59,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:59,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-10 22:24:59,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:59,492 INFO L124 PetriNetUnfolderBase]: 268/595 cut-off events. [2024-11-10 22:24:59,493 INFO L125 PetriNetUnfolderBase]: For 149/167 co-relation queries the response was YES. [2024-11-10 22:24:59,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 595 events. 268/595 cut-off events. For 149/167 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3643 event pairs, 219 based on Foata normal form. 7/422 useless extension candidates. Maximal degree in co-relation 1185. Up to 429 conditions per place. [2024-11-10 22:24:59,497 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 36 selfloop transitions, 2 changer transitions 15/69 dead transitions. [2024-11-10 22:24:59,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 360 flow [2024-11-10 22:24:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-10 22:24:59,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-11-10 22:24:59,499 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 219 flow. Second operand 6 states and 159 transitions. [2024-11-10 22:24:59,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 360 flow [2024-11-10 22:24:59,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:59,501 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 203 flow [2024-11-10 22:24:59,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-10 22:24:59,502 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-10 22:24:59,503 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 203 flow [2024-11-10 22:24:59,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:59,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:59,503 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:24:59,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:24:59,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -352075153, now seen corresponding path program 1 times [2024-11-10 22:24:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:59,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652596814] [2024-11-10 22:24:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652596814] [2024-11-10 22:24:59,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652596814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649121766] [2024-11-10 22:24:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:59,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:59,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:59,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:24:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:59,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:24:59,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:59,867 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 15 treesize of output 1 [2024-11-10 22:24:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:59,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:00,023 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 16 treesize of output 14 [2024-11-10 22:25:00,029 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 22 treesize of output 20 [2024-11-10 22:25:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649121766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:00,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:00,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:25:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783786314] [2024-11-10 22:25:00,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:00,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:25:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:25:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:25:00,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:00,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:00,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:00,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:00,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:00,380 INFO L124 PetriNetUnfolderBase]: 369/866 cut-off events. [2024-11-10 22:25:00,380 INFO L125 PetriNetUnfolderBase]: For 166/197 co-relation queries the response was YES. [2024-11-10 22:25:00,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 866 events. 369/866 cut-off events. For 166/197 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5659 event pairs, 86 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 1670. Up to 220 conditions per place. [2024-11-10 22:25:00,386 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 49 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-11-10 22:25:00,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 401 flow [2024-11-10 22:25:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:25:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:25:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-11-10 22:25:00,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-10 22:25:00,387 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 203 flow. Second operand 8 states and 224 transitions. [2024-11-10 22:25:00,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 401 flow [2024-11-10 22:25:00,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 373 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-10 22:25:00,393 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 254 flow [2024-11-10 22:25:00,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-11-10 22:25:00,393 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-11-10 22:25:00,393 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 254 flow [2024-11-10 22:25:00,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:00,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:00,394 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:00,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:25:00,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:00,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:00,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash -352075152, now seen corresponding path program 1 times [2024-11-10 22:25:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476444723] [2024-11-10 22:25:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476444723] [2024-11-10 22:25:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476444723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013155462] [2024-11-10 22:25:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:00,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:00,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:00,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:25:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:00,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 22:25:00,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:00,959 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 15 treesize of output 1 [2024-11-10 22:25:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:01,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:01,051 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 14 treesize of output 12 [2024-11-10 22:25:01,055 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 18 treesize of output 16 [2024-11-10 22:25:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013155462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:01,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:01,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 22:25:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624584019] [2024-11-10 22:25:01,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:25:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:25:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:25:01,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:01,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:01,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:01,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:01,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:01,377 INFO L124 PetriNetUnfolderBase]: 343/822 cut-off events. [2024-11-10 22:25:01,377 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-11-10 22:25:01,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 822 events. 343/822 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5387 event pairs, 86 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1803. Up to 215 conditions per place. [2024-11-10 22:25:01,382 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 48 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-11-10 22:25:01,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 424 flow [2024-11-10 22:25:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:25:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:25:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-11-10 22:25:01,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068181818181818 [2024-11-10 22:25:01,384 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 254 flow. Second operand 8 states and 223 transitions. [2024-11-10 22:25:01,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 424 flow [2024-11-10 22:25:01,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 414 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:25:01,387 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 270 flow [2024-11-10 22:25:01,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-11-10 22:25:01,388 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-10 22:25:01,388 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 270 flow [2024-11-10 22:25:01,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:01,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:01,389 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:01,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:25:01,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:01,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:01,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -352075150, now seen corresponding path program 1 times [2024-11-10 22:25:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:01,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739308470] [2024-11-10 22:25:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739308470] [2024-11-10 22:25:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739308470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:25:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281213684] [2024-11-10 22:25:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:01,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:01,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:01,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 270 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) [2024-11-10 22:25:01,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:01,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:01,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:01,864 INFO L124 PetriNetUnfolderBase]: 375/890 cut-off events. [2024-11-10 22:25:01,865 INFO L125 PetriNetUnfolderBase]: For 789/789 co-relation queries the response was YES. [2024-11-10 22:25:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 890 events. 375/890 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5834 event pairs, 104 based on Foata normal form. 0/635 useless extension candidates. Maximal degree in co-relation 2122. Up to 542 conditions per place. [2024-11-10 22:25:01,871 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 50 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-10 22:25:01,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 417 flow [2024-11-10 22:25:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-10 22:25:01,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-11-10 22:25:01,873 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 270 flow. Second operand 3 states and 104 transitions. [2024-11-10 22:25:01,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 417 flow [2024-11-10 22:25:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 402 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:01,876 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 284 flow [2024-11-10 22:25:01,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-11-10 22:25:01,880 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-10 22:25:01,880 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 284 flow [2024-11-10 22:25:01,880 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) [2024-11-10 22:25:01,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:01,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:01,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:25:01,881 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 958215510, now seen corresponding path program 1 times [2024-11-10 22:25:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373830053] [2024-11-10 22:25:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373830053] [2024-11-10 22:25:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373830053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:01,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:01,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201536624] [2024-11-10 22:25:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:01,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:01,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:01,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:01,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:01,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:01,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:02,183 INFO L124 PetriNetUnfolderBase]: 479/986 cut-off events. [2024-11-10 22:25:02,183 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2024-11-10 22:25:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 986 events. 479/986 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6464 event pairs, 225 based on Foata normal form. 36/740 useless extension candidates. Maximal degree in co-relation 2555. Up to 582 conditions per place. [2024-11-10 22:25:02,189 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 66 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2024-11-10 22:25:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 491 flow [2024-11-10 22:25:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-10 22:25:02,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-10 22:25:02,191 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 284 flow. Second operand 4 states and 130 transitions. [2024-11-10 22:25:02,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 491 flow [2024-11-10 22:25:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 85 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:02,195 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 302 flow [2024-11-10 22:25:02,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-11-10 22:25:02,196 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-10 22:25:02,196 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 302 flow [2024-11-10 22:25:02,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:02,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:02,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:02,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:25:02,197 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:02,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 133011826, now seen corresponding path program 1 times [2024-11-10 22:25:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347711723] [2024-11-10 22:25:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:02,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:02,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:02,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347711723] [2024-11-10 22:25:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347711723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101345053] [2024-11-10 22:25:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:02,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:02,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:02,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:25:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:02,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:25:02,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:02,509 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 15 treesize of output 1 [2024-11-10 22:25:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:02,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:02,634 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 14 treesize of output 12 [2024-11-10 22:25:02,638 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 18 treesize of output 16 [2024-11-10 22:25:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:02,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101345053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:02,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:02,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:25:02,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43298651] [2024-11-10 22:25:02,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:02,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:25:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:25:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:25:02,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:02,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:02,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:02,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:02,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:02,999 INFO L124 PetriNetUnfolderBase]: 521/1186 cut-off events. [2024-11-10 22:25:02,999 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-11-10 22:25:03,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 1186 events. 521/1186 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8188 event pairs, 127 based on Foata normal form. 0/850 useless extension candidates. Maximal degree in co-relation 3148. Up to 335 conditions per place. [2024-11-10 22:25:03,006 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 65 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-11-10 22:25:03,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 678 flow [2024-11-10 22:25:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:25:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:25:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-11-10 22:25:03,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-11-10 22:25:03,008 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 302 flow. Second operand 8 states and 222 transitions. [2024-11-10 22:25:03,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 678 flow [2024-11-10 22:25:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:03,011 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 371 flow [2024-11-10 22:25:03,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-11-10 22:25:03,011 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-10 22:25:03,012 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 371 flow [2024-11-10 22:25:03,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:03,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:03,012 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:03,216 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,SelfDestructingSolverStorable9 [2024-11-10 22:25:03,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:03,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 133011827, now seen corresponding path program 1 times [2024-11-10 22:25:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371308418] [2024-11-10 22:25:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371308418] [2024-11-10 22:25:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371308418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113338255] [2024-11-10 22:25:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:03,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:03,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:03,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:25:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:03,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:25:03,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:03,491 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 15 treesize of output 1 [2024-11-10 22:25:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:03,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:03,610 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 16 treesize of output 14 [2024-11-10 22:25:03,613 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 22 treesize of output 20 [2024-11-10 22:25:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113338255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:03,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:03,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 22:25:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167708135] [2024-11-10 22:25:03,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:03,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:25:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:25:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:25:03,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:03,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 371 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:03,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:03,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:03,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:03,956 INFO L124 PetriNetUnfolderBase]: 486/1163 cut-off events. [2024-11-10 22:25:03,956 INFO L125 PetriNetUnfolderBase]: For 1435/1435 co-relation queries the response was YES. [2024-11-10 22:25:03,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1163 events. 486/1163 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8029 event pairs, 127 based on Foata normal form. 24/903 useless extension candidates. Maximal degree in co-relation 3406. Up to 335 conditions per place. [2024-11-10 22:25:03,965 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 64 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-11-10 22:25:03,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 711 flow [2024-11-10 22:25:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:25:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:25:03,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-11-10 22:25:03,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5022727272727273 [2024-11-10 22:25:03,967 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 371 flow. Second operand 8 states and 221 transitions. [2024-11-10 22:25:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 711 flow [2024-11-10 22:25:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 701 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:25:03,971 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 387 flow [2024-11-10 22:25:03,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=84, PETRI_TRANSITIONS=67} [2024-11-10 22:25:03,972 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-10 22:25:03,972 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 387 flow [2024-11-10 22:25:03,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:03,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:03,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:03,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:25:04,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:04,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:04,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1024632359, now seen corresponding path program 1 times [2024-11-10 22:25:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624162442] [2024-11-10 22:25:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:04,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624162442] [2024-11-10 22:25:04,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624162442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:04,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:04,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:04,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491468340] [2024-11-10 22:25:04,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:04,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:04,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:04,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:04,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:04,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:04,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 67 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:04,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:04,501 INFO L124 PetriNetUnfolderBase]: 642/1249 cut-off events. [2024-11-10 22:25:04,502 INFO L125 PetriNetUnfolderBase]: For 2085/2085 co-relation queries the response was YES. [2024-11-10 22:25:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4250 conditions, 1249 events. 642/1249 cut-off events. For 2085/2085 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8206 event pairs, 330 based on Foata normal form. 50/993 useless extension candidates. Maximal degree in co-relation 4206. Up to 795 conditions per place. [2024-11-10 22:25:04,512 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 79 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-11-10 22:25:04,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 741 flow [2024-11-10 22:25:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-10 22:25:04,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-10 22:25:04,513 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 387 flow. Second operand 4 states and 128 transitions. [2024-11-10 22:25:04,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 741 flow [2024-11-10 22:25:04,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 728 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:04,518 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 395 flow [2024-11-10 22:25:04,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-11-10 22:25:04,519 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-10 22:25:04,519 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 395 flow [2024-11-10 22:25:04,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:04,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:04,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:25:04,520 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:04,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash 184459774, now seen corresponding path program 1 times [2024-11-10 22:25:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443660641] [2024-11-10 22:25:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443660641] [2024-11-10 22:25:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443660641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:04,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338560514] [2024-11-10 22:25:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:04,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:04,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:04,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:04,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:04,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:04,755 INFO L124 PetriNetUnfolderBase]: 367/860 cut-off events. [2024-11-10 22:25:04,755 INFO L125 PetriNetUnfolderBase]: For 1767/1767 co-relation queries the response was YES. [2024-11-10 22:25:04,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 860 events. 367/860 cut-off events. For 1767/1767 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5333 event pairs, 274 based on Foata normal form. 0/722 useless extension candidates. Maximal degree in co-relation 2858. Up to 611 conditions per place. [2024-11-10 22:25:04,762 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 43 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2024-11-10 22:25:04,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 64 transitions, 455 flow [2024-11-10 22:25:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-10 22:25:04,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-10 22:25:04,763 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 395 flow. Second operand 3 states and 88 transitions. [2024-11-10 22:25:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 64 transitions, 455 flow [2024-11-10 22:25:04,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 64 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:04,767 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 363 flow [2024-11-10 22:25:04,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-11-10 22:25:04,768 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-11-10 22:25:04,768 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 363 flow [2024-11-10 22:25:04,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:04,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:04,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:25:04,769 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:04,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:04,769 INFO L85 PathProgramCache]: Analyzing trace with hash 184459775, now seen corresponding path program 1 times [2024-11-10 22:25:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:04,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992637090] [2024-11-10 22:25:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992637090] [2024-11-10 22:25:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992637090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:04,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290028879] [2024-11-10 22:25:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:04,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:04,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-10 22:25:04,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:04,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-10 22:25:04,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:04,930 INFO L124 PetriNetUnfolderBase]: 266/669 cut-off events. [2024-11-10 22:25:04,931 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-11-10 22:25:04,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 669 events. 266/669 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3891 event pairs, 187 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 2088. Up to 444 conditions per place. [2024-11-10 22:25:04,936 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 39 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-11-10 22:25:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 60 transitions, 415 flow [2024-11-10 22:25:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-10 22:25:04,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-11-10 22:25:04,938 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 363 flow. Second operand 3 states and 86 transitions. [2024-11-10 22:25:04,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 60 transitions, 415 flow [2024-11-10 22:25:04,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 60 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:04,941 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 336 flow [2024-11-10 22:25:04,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=79, 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=336, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-11-10 22:25:04,942 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-10 22:25:04,942 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 336 flow [2024-11-10 22:25:04,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:04,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:04,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:25:04,943 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:04,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1394224617, now seen corresponding path program 1 times [2024-11-10 22:25:04,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:04,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152204502] [2024-11-10 22:25:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152204502] [2024-11-10 22:25:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152204502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993230744] [2024-11-10 22:25:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:05,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:05,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:05,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:05,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:25:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:05,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:05,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:05,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993230744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:05,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-10 22:25:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66730904] [2024-11-10 22:25:05,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:05,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:25:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:25:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:25:05,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:05,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 336 flow. Second operand has 20 states, 20 states have (on average 14.6) internal successors, (292), 20 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:05,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:05,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:05,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:06,019 INFO L124 PetriNetUnfolderBase]: 765/1593 cut-off events. [2024-11-10 22:25:06,020 INFO L125 PetriNetUnfolderBase]: For 2852/2856 co-relation queries the response was YES. [2024-11-10 22:25:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 1593 events. 765/1593 cut-off events. For 2852/2856 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10119 event pairs, 384 based on Foata normal form. 0/1473 useless extension candidates. Maximal degree in co-relation 5076. Up to 719 conditions per place. [2024-11-10 22:25:06,033 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 103 selfloop transitions, 21 changer transitions 12/148 dead transitions. [2024-11-10 22:25:06,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 148 transitions, 1094 flow [2024-11-10 22:25:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 22:25:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 22:25:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 269 transitions. [2024-11-10 22:25:06,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37622377622377623 [2024-11-10 22:25:06,035 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 336 flow. Second operand 13 states and 269 transitions. [2024-11-10 22:25:06,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 148 transitions, 1094 flow [2024-11-10 22:25:06,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 148 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:06,041 INFO L231 Difference]: Finished difference. Result has 97 places, 68 transitions, 445 flow [2024-11-10 22:25:06,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=445, PETRI_PLACES=97, PETRI_TRANSITIONS=68} [2024-11-10 22:25:06,041 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2024-11-10 22:25:06,042 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 68 transitions, 445 flow [2024-11-10 22:25:06,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.6) internal successors, (292), 20 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:06,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:06,042 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:25:06,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:06,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:06,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:06,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1262565517, now seen corresponding path program 2 times [2024-11-10 22:25:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083796340] [2024-11-10 22:25:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:06,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083796340] [2024-11-10 22:25:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083796340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45771405] [2024-11-10 22:25:06,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:06,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:06,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:06,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:25:06,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:06,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:06,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:06,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:06,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45771405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:06,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:25:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115186286] [2024-11-10 22:25:06,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:06,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:25:06,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:25:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:06,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:06,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 68 transitions, 445 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:06,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:06,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:06,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:06,870 INFO L124 PetriNetUnfolderBase]: 426/1116 cut-off events. [2024-11-10 22:25:06,871 INFO L125 PetriNetUnfolderBase]: For 3050/3080 co-relation queries the response was YES. [2024-11-10 22:25:06,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 1116 events. 426/1116 cut-off events. For 3050/3080 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7311 event pairs, 302 based on Foata normal form. 17/1063 useless extension candidates. Maximal degree in co-relation 3720. Up to 708 conditions per place. [2024-11-10 22:25:06,880 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 34 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-11-10 22:25:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 73 transitions, 586 flow [2024-11-10 22:25:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 294 transitions. [2024-11-10 22:25:06,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-10 22:25:06,883 INFO L175 Difference]: Start difference. First operand has 97 places, 68 transitions, 445 flow. Second operand 14 states and 294 transitions. [2024-11-10 22:25:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 73 transitions, 586 flow [2024-11-10 22:25:06,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 73 transitions, 556 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-10 22:25:06,888 INFO L231 Difference]: Finished difference. Result has 102 places, 70 transitions, 470 flow [2024-11-10 22:25:06,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=470, PETRI_PLACES=102, PETRI_TRANSITIONS=70} [2024-11-10 22:25:06,889 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-11-10 22:25:06,890 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 70 transitions, 470 flow [2024-11-10 22:25:06,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:06,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:06,890 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:06,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:07,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:25:07,091 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:07,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2004274539, now seen corresponding path program 1 times [2024-11-10 22:25:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:07,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617104332] [2024-11-10 22:25:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:07,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:07,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617104332] [2024-11-10 22:25:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617104332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928240453] [2024-11-10 22:25:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:07,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:07,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:07,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:07,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:25:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:07,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:07,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:07,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928240453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:07,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-10 22:25:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516907087] [2024-11-10 22:25:07,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:07,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:25:07,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:25:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:25:07,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:07,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 70 transitions, 470 flow. Second operand has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:07,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:07,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:07,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:08,058 INFO L124 PetriNetUnfolderBase]: 655/1247 cut-off events. [2024-11-10 22:25:08,058 INFO L125 PetriNetUnfolderBase]: For 3440/3474 co-relation queries the response was YES. [2024-11-10 22:25:08,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 1247 events. 655/1247 cut-off events. For 3440/3474 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7240 event pairs, 356 based on Foata normal form. 17/1195 useless extension candidates. Maximal degree in co-relation 4472. Up to 712 conditions per place. [2024-11-10 22:25:08,064 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 43 selfloop transitions, 15 changer transitions 58/128 dead transitions. [2024-11-10 22:25:08,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 128 transitions, 1064 flow [2024-11-10 22:25:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 22:25:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 22:25:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2024-11-10 22:25:08,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-11-10 22:25:08,066 INFO L175 Difference]: Start difference. First operand has 102 places, 70 transitions, 470 flow. Second operand 13 states and 253 transitions. [2024-11-10 22:25:08,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 128 transitions, 1064 flow [2024-11-10 22:25:08,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 128 transitions, 998 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-10 22:25:08,070 INFO L231 Difference]: Finished difference. Result has 106 places, 61 transitions, 365 flow [2024-11-10 22:25:08,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=365, PETRI_PLACES=106, PETRI_TRANSITIONS=61} [2024-11-10 22:25:08,071 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-11-10 22:25:08,071 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 61 transitions, 365 flow [2024-11-10 22:25:08,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:08,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:08,071 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:08,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:08,272 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,SelfDestructingSolverStorable16 [2024-11-10 22:25:08,272 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:08,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 681036107, now seen corresponding path program 2 times [2024-11-10 22:25:08,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:08,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510514919] [2024-11-10 22:25:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:08,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510514919] [2024-11-10 22:25:08,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510514919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428998426] [2024-11-10 22:25:08,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:08,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:08,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:08,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:25:08,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:25:08,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:08,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:25:08,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:08,735 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 19 treesize of output 1 [2024-11-10 22:25:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:08,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:08,941 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 16 treesize of output 14 [2024-11-10 22:25:08,944 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 20 treesize of output 16 [2024-11-10 22:25:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428998426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:08,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:25:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726281935] [2024-11-10 22:25:08,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:08,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:25:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:25:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:25:09,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:09,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 61 transitions, 365 flow. Second operand has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:09,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:09,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:09,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:09,796 INFO L124 PetriNetUnfolderBase]: 564/1199 cut-off events. [2024-11-10 22:25:09,797 INFO L125 PetriNetUnfolderBase]: For 3035/3035 co-relation queries the response was YES. [2024-11-10 22:25:09,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1199 events. 564/1199 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6936 event pairs, 86 based on Foata normal form. 18/1165 useless extension candidates. Maximal degree in co-relation 4201. Up to 276 conditions per place. [2024-11-10 22:25:09,811 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 105 selfloop transitions, 20 changer transitions 0/140 dead transitions. [2024-11-10 22:25:09,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 140 transitions, 1113 flow [2024-11-10 22:25:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 318 transitions. [2024-11-10 22:25:09,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.412987012987013 [2024-11-10 22:25:09,813 INFO L175 Difference]: Start difference. First operand has 106 places, 61 transitions, 365 flow. Second operand 14 states and 318 transitions. [2024-11-10 22:25:09,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 140 transitions, 1113 flow [2024-11-10 22:25:09,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 999 flow, removed 20 selfloop flow, removed 17 redundant places. [2024-11-10 22:25:09,821 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 387 flow [2024-11-10 22:25:09,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=387, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2024-11-10 22:25:09,821 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-10 22:25:09,821 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 387 flow [2024-11-10 22:25:09,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:09,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:09,822 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:09,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:25:10,026 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,SelfDestructingSolverStorable17 [2024-11-10 22:25:10,027 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:10,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash 681036106, now seen corresponding path program 1 times [2024-11-10 22:25:10,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:10,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925672467] [2024-11-10 22:25:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:10,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925672467] [2024-11-10 22:25:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925672467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120951737] [2024-11-10 22:25:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:10,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:10,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:10,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:25:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:10,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:25:10,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:10,465 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 19 treesize of output 1 [2024-11-10 22:25:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:10,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:10,666 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 18 treesize of output 16 [2024-11-10 22:25:10,669 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 24 treesize of output 20 [2024-11-10 22:25:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120951737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:10,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:25:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921301270] [2024-11-10 22:25:10,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:10,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:25:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:25:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:25:10,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:10,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 387 flow. Second operand has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:10,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:10,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:10,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:11,289 INFO L124 PetriNetUnfolderBase]: 536/1167 cut-off events. [2024-11-10 22:25:11,289 INFO L125 PetriNetUnfolderBase]: For 3444/3444 co-relation queries the response was YES. [2024-11-10 22:25:11,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 1167 events. 536/1167 cut-off events. For 3444/3444 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6702 event pairs, 65 based on Foata normal form. 18/1115 useless extension candidates. Maximal degree in co-relation 3998. Up to 262 conditions per place. [2024-11-10 22:25:11,298 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 104 selfloop transitions, 20 changer transitions 0/139 dead transitions. [2024-11-10 22:25:11,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 1051 flow [2024-11-10 22:25:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 317 transitions. [2024-11-10 22:25:11,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4116883116883117 [2024-11-10 22:25:11,300 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 387 flow. Second operand 14 states and 317 transitions. [2024-11-10 22:25:11,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 1051 flow [2024-11-10 22:25:11,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1014 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-10 22:25:11,306 INFO L231 Difference]: Finished difference. Result has 96 places, 64 transitions, 382 flow [2024-11-10 22:25:11,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=382, PETRI_PLACES=96, PETRI_TRANSITIONS=64} [2024-11-10 22:25:11,307 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-11-10 22:25:11,307 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 64 transitions, 382 flow [2024-11-10 22:25:11,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.434782608695652) internal successors, (401), 23 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:11,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:11,307 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:11,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:25:11,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:11,512 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:11,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1640690033, now seen corresponding path program 1 times [2024-11-10 22:25:11,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:11,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604698974] [2024-11-10 22:25:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:11,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604698974] [2024-11-10 22:25:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604698974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813636431] [2024-11-10 22:25:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:11,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:11,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:25:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:11,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:11,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:11,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813636431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:11,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:25:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449543993] [2024-11-10 22:25:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:11,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:11,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:11,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 64 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:11,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:11,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:11,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:12,007 INFO L124 PetriNetUnfolderBase]: 480/1096 cut-off events. [2024-11-10 22:25:12,007 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2024-11-10 22:25:12,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 1096 events. 480/1096 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6433 event pairs, 50 based on Foata normal form. 36/1054 useless extension candidates. Maximal degree in co-relation 3719. Up to 294 conditions per place. [2024-11-10 22:25:12,016 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 88 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2024-11-10 22:25:12,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 112 transitions, 852 flow [2024-11-10 22:25:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-11-10 22:25:12,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-11-10 22:25:12,018 INFO L175 Difference]: Start difference. First operand has 96 places, 64 transitions, 382 flow. Second operand 6 states and 172 transitions. [2024-11-10 22:25:12,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 112 transitions, 852 flow [2024-11-10 22:25:12,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 824 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 22:25:12,024 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 368 flow [2024-11-10 22:25:12,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-11-10 22:25:12,025 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-10 22:25:12,025 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 368 flow [2024-11-10 22:25:12,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:12,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:12,025 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:12,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:25:12,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:12,226 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:12,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -470083507, now seen corresponding path program 2 times [2024-11-10 22:25:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680976048] [2024-11-10 22:25:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680976048] [2024-11-10 22:25:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680976048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011251939] [2024-11-10 22:25:12,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:12,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:12,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:12,497 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:12,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:25:12,581 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:25:12,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:12,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:25:12,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:12,623 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 19 treesize of output 1 [2024-11-10 22:25:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:12,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:12,836 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 16 treesize of output 14 [2024-11-10 22:25:12,840 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 20 treesize of output 16 [2024-11-10 22:25:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011251939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:12,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:12,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:25:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969655374] [2024-11-10 22:25:12,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:12,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:25:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:12,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:25:12,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:25:13,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:13,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 368 flow. Second operand has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:13,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:13,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:13,632 INFO L124 PetriNetUnfolderBase]: 711/1428 cut-off events. [2024-11-10 22:25:13,633 INFO L125 PetriNetUnfolderBase]: For 5579/5579 co-relation queries the response was YES. [2024-11-10 22:25:13,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1428 events. 711/1428 cut-off events. For 5579/5579 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8289 event pairs, 121 based on Foata normal form. 21/1355 useless extension candidates. Maximal degree in co-relation 5422. Up to 336 conditions per place. [2024-11-10 22:25:13,642 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 120 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2024-11-10 22:25:13,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 154 transitions, 1423 flow [2024-11-10 22:25:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 312 transitions. [2024-11-10 22:25:13,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4051948051948052 [2024-11-10 22:25:13,644 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 368 flow. Second operand 14 states and 312 transitions. [2024-11-10 22:25:13,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 154 transitions, 1423 flow [2024-11-10 22:25:13,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1285 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-10 22:25:13,651 INFO L231 Difference]: Finished difference. Result has 98 places, 67 transitions, 431 flow [2024-11-10 22:25:13,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=431, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2024-11-10 22:25:13,651 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-11-10 22:25:13,652 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 431 flow [2024-11-10 22:25:13,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:13,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:13,652 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:13,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 22:25:13,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 22:25:13,857 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:13,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -470083506, now seen corresponding path program 1 times [2024-11-10 22:25:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886971] [2024-11-10 22:25:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886971] [2024-11-10 22:25:14,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028571930] [2024-11-10 22:25:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:14,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:14,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:14,132 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:14,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:25:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:14,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:25:14,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:14,266 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 19 treesize of output 1 [2024-11-10 22:25:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:14,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:14,465 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 18 treesize of output 16 [2024-11-10 22:25:14,469 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 24 treesize of output 20 [2024-11-10 22:25:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028571930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:14,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:25:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073170218] [2024-11-10 22:25:14,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:14,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:25:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:25:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:25:14,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:14,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 431 flow. Second operand has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:14,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:14,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:14,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:15,203 INFO L124 PetriNetUnfolderBase]: 676/1342 cut-off events. [2024-11-10 22:25:15,203 INFO L125 PetriNetUnfolderBase]: For 5294/5294 co-relation queries the response was YES. [2024-11-10 22:25:15,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 1342 events. 676/1342 cut-off events. For 5294/5294 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7640 event pairs, 121 based on Foata normal form. 21/1239 useless extension candidates. Maximal degree in co-relation 5130. Up to 332 conditions per place. [2024-11-10 22:25:15,212 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 119 selfloop transitions, 20 changer transitions 0/153 dead transitions. [2024-11-10 22:25:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 153 transitions, 1338 flow [2024-11-10 22:25:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 311 transitions. [2024-11-10 22:25:15,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4038961038961039 [2024-11-10 22:25:15,214 INFO L175 Difference]: Start difference. First operand has 98 places, 67 transitions, 431 flow. Second operand 14 states and 311 transitions. [2024-11-10 22:25:15,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 153 transitions, 1338 flow [2024-11-10 22:25:15,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 153 transitions, 1303 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-10 22:25:15,222 INFO L231 Difference]: Finished difference. Result has 102 places, 66 transitions, 429 flow [2024-11-10 22:25:15,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=429, PETRI_PLACES=102, PETRI_TRANSITIONS=66} [2024-11-10 22:25:15,223 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-11-10 22:25:15,223 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 66 transitions, 429 flow [2024-11-10 22:25:15,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:15,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:15,224 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:15,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 22:25:15,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:15,428 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:15,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:15,428 INFO L85 PathProgramCache]: Analyzing trace with hash -678216046, now seen corresponding path program 1 times [2024-11-10 22:25:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:15,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895020144] [2024-11-10 22:25:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:15,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895020144] [2024-11-10 22:25:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895020144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504977047] [2024-11-10 22:25:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:15,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:15,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:25:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:15,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:15,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:15,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:15,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504977047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:15,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:15,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:25:15,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640435729] [2024-11-10 22:25:15,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:15,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:15,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:15,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:15,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:15,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 66 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:15,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:15,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:15,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:16,109 INFO L124 PetriNetUnfolderBase]: 979/2123 cut-off events. [2024-11-10 22:25:16,109 INFO L125 PetriNetUnfolderBase]: For 9150/9150 co-relation queries the response was YES. [2024-11-10 22:25:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7957 conditions, 2123 events. 979/2123 cut-off events. For 9150/9150 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12983 event pairs, 185 based on Foata normal form. 66/1998 useless extension candidates. Maximal degree in co-relation 7935. Up to 613 conditions per place. [2024-11-10 22:25:16,122 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 172 selfloop transitions, 13 changer transitions 0/200 dead transitions. [2024-11-10 22:25:16,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 200 transitions, 1907 flow [2024-11-10 22:25:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-10 22:25:16,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5418181818181819 [2024-11-10 22:25:16,123 INFO L175 Difference]: Start difference. First operand has 102 places, 66 transitions, 429 flow. Second operand 10 states and 298 transitions. [2024-11-10 22:25:16,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 200 transitions, 1907 flow [2024-11-10 22:25:16,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 200 transitions, 1797 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 22:25:16,134 INFO L231 Difference]: Finished difference. Result has 103 places, 73 transitions, 491 flow [2024-11-10 22:25:16,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=491, PETRI_PLACES=103, PETRI_TRANSITIONS=73} [2024-11-10 22:25:16,135 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2024-11-10 22:25:16,135 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 73 transitions, 491 flow [2024-11-10 22:25:16,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:16,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:16,135 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:16,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 22:25:16,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:16,337 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:16,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash -778662412, now seen corresponding path program 1 times [2024-11-10 22:25:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669907061] [2024-11-10 22:25:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669907061] [2024-11-10 22:25:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669907061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540509804] [2024-11-10 22:25:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:16,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:16,397 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:16,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:25:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:16,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:16,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:16,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540509804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:16,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:25:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437676099] [2024-11-10 22:25:16,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:16,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:16,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:16,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 73 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:16,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:16,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:16,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:16,886 INFO L124 PetriNetUnfolderBase]: 1078/2192 cut-off events. [2024-11-10 22:25:16,886 INFO L125 PetriNetUnfolderBase]: For 9650/9679 co-relation queries the response was YES. [2024-11-10 22:25:16,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8549 conditions, 2192 events. 1078/2192 cut-off events. For 9650/9679 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13731 event pairs, 115 based on Foata normal form. 74/2105 useless extension candidates. Maximal degree in co-relation 8525. Up to 637 conditions per place. [2024-11-10 22:25:16,898 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 119 selfloop transitions, 9 changer transitions 0/145 dead transitions. [2024-11-10 22:25:16,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 145 transitions, 1401 flow [2024-11-10 22:25:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-10 22:25:16,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-10 22:25:16,900 INFO L175 Difference]: Start difference. First operand has 103 places, 73 transitions, 491 flow. Second operand 6 states and 168 transitions. [2024-11-10 22:25:16,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 145 transitions, 1401 flow [2024-11-10 22:25:16,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 145 transitions, 1369 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:16,909 INFO L231 Difference]: Finished difference. Result has 104 places, 72 transitions, 497 flow [2024-11-10 22:25:16,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=104, PETRI_TRANSITIONS=72} [2024-11-10 22:25:16,909 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-11-10 22:25:16,909 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 72 transitions, 497 flow [2024-11-10 22:25:16,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:16,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:16,910 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:16,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 22:25:17,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 22:25:17,111 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:17,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1631269505, now seen corresponding path program 1 times [2024-11-10 22:25:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:17,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130780824] [2024-11-10 22:25:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:17,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130780824] [2024-11-10 22:25:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130780824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115623084] [2024-11-10 22:25:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:17,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:17,191 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:17,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 22:25:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:17,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:17,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:17,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:25:17,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115623084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:17,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:25:17,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256902016] [2024-11-10 22:25:17,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:17,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:17,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:17,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:17,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-11-10 22:25:17,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 72 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:17,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-11-10 22:25:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:17,918 INFO L124 PetriNetUnfolderBase]: 1719/3459 cut-off events. [2024-11-10 22:25:17,918 INFO L125 PetriNetUnfolderBase]: For 17301/17348 co-relation queries the response was YES. [2024-11-10 22:25:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14113 conditions, 3459 events. 1719/3459 cut-off events. For 17301/17348 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 22856 event pairs, 421 based on Foata normal form. 111/3332 useless extension candidates. Maximal degree in co-relation 14088. Up to 1064 conditions per place. [2024-11-10 22:25:17,946 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 200 selfloop transitions, 13 changer transitions 0/230 dead transitions. [2024-11-10 22:25:17,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 230 transitions, 2301 flow [2024-11-10 22:25:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-11-10 22:25:17,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-10 22:25:17,948 INFO L175 Difference]: Start difference. First operand has 104 places, 72 transitions, 497 flow. Second operand 10 states and 290 transitions. [2024-11-10 22:25:17,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 230 transitions, 2301 flow [2024-11-10 22:25:17,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 230 transitions, 2257 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-10 22:25:17,963 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 563 flow [2024-11-10 22:25:17,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2024-11-10 22:25:17,963 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 58 predicate places. [2024-11-10 22:25:17,963 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 563 flow [2024-11-10 22:25:17,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:17,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:17,964 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:17,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:18,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:18,168 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:18,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1207540604, now seen corresponding path program 3 times [2024-11-10 22:25:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620378136] [2024-11-10 22:25:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620378136] [2024-11-10 22:25:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620378136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961507181] [2024-11-10 22:25:18,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:25:18,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:18,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:18,367 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:18,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 22:25:18,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 22:25:18,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:18,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 22:25:18,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:18,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:25:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:19,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:19,475 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 18 treesize of output 16 [2024-11-10 22:25:19,481 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 22 treesize of output 16 [2024-11-10 22:25:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961507181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:19,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 37 [2024-11-10 22:25:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467916503] [2024-11-10 22:25:19,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:19,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 22:25:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 22:25:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 22:25:20,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:20,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 563 flow. Second operand has 38 states, 38 states have (on average 14.473684210526315) internal successors, (550), 38 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:20,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:20,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:20,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:23,209 INFO L124 PetriNetUnfolderBase]: 5505/10453 cut-off events. [2024-11-10 22:25:23,209 INFO L125 PetriNetUnfolderBase]: For 48488/48590 co-relation queries the response was YES. [2024-11-10 22:25:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41834 conditions, 10453 events. 5505/10453 cut-off events. For 48488/48590 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 78721 event pairs, 1009 based on Foata normal form. 118/9833 useless extension candidates. Maximal degree in co-relation 41807. Up to 1757 conditions per place. [2024-11-10 22:25:23,278 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 390 selfloop transitions, 68 changer transitions 60/532 dead transitions. [2024-11-10 22:25:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 532 transitions, 5523 flow [2024-11-10 22:25:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 22:25:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-10 22:25:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 680 transitions. [2024-11-10 22:25:23,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-10 22:25:23,280 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 563 flow. Second operand 32 states and 680 transitions. [2024-11-10 22:25:23,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 532 transitions, 5523 flow [2024-11-10 22:25:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 532 transitions, 5389 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:23,328 INFO L231 Difference]: Finished difference. Result has 143 places, 121 transitions, 1062 flow [2024-11-10 22:25:23,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1062, PETRI_PLACES=143, PETRI_TRANSITIONS=121} [2024-11-10 22:25:23,330 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-11-10 22:25:23,330 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 121 transitions, 1062 flow [2024-11-10 22:25:23,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 14.473684210526315) internal successors, (550), 38 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:23,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:23,331 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:23,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 22:25:23,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:23,535 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:23,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -404587514, now seen corresponding path program 3 times [2024-11-10 22:25:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:23,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590345025] [2024-11-10 22:25:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590345025] [2024-11-10 22:25:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590345025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925777369] [2024-11-10 22:25:23,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:25:23,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:23,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:23,706 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:23,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 22:25:23,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 22:25:23,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:23,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 22:25:23,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:24,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925777369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:24,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-10 22:25:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479103457] [2024-11-10 22:25:24,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:24,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-10 22:25:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-10 22:25:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-11-10 22:25:24,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:24,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 121 transitions, 1062 flow. Second operand has 30 states, 30 states have (on average 14.6) internal successors, (438), 30 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:24,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:24,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:24,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:25,973 INFO L124 PetriNetUnfolderBase]: 4746/8506 cut-off events. [2024-11-10 22:25:25,974 INFO L125 PetriNetUnfolderBase]: For 60831/61631 co-relation queries the response was YES. [2024-11-10 22:25:26,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39230 conditions, 8506 events. 4746/8506 cut-off events. For 60831/61631 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 60063 event pairs, 2816 based on Foata normal form. 540/8589 useless extension candidates. Maximal degree in co-relation 39196. Up to 5858 conditions per place. [2024-11-10 22:25:26,042 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 87 selfloop transitions, 18 changer transitions 120/248 dead transitions. [2024-11-10 22:25:26,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 248 transitions, 2704 flow [2024-11-10 22:25:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:25:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:25:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 343 transitions. [2024-11-10 22:25:26,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3464646464646465 [2024-11-10 22:25:26,047 INFO L175 Difference]: Start difference. First operand has 143 places, 121 transitions, 1062 flow. Second operand 18 states and 343 transitions. [2024-11-10 22:25:26,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 248 transitions, 2704 flow [2024-11-10 22:25:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 248 transitions, 2623 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-10 22:25:26,092 INFO L231 Difference]: Finished difference. Result has 158 places, 104 transitions, 927 flow [2024-11-10 22:25:26,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=927, PETRI_PLACES=158, PETRI_TRANSITIONS=104} [2024-11-10 22:25:26,093 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-11-10 22:25:26,093 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 104 transitions, 927 flow [2024-11-10 22:25:26,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.6) internal successors, (438), 30 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:26,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:26,093 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:26,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 22:25:26,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:26,294 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:26,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 218803557, now seen corresponding path program 2 times [2024-11-10 22:25:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482603957] [2024-11-10 22:25:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482603957] [2024-11-10 22:25:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482603957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672122109] [2024-11-10 22:25:26,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:26,665 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:26,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 22:25:26,767 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:25:26,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:26,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 22:25:26,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:26,853 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 19 treesize of output 1 [2024-11-10 22:25:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:27,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:27,230 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 18 treesize of output 16 [2024-11-10 22:25:27,233 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 24 treesize of output 20 [2024-11-10 22:25:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:27,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672122109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:27,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:27,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-10 22:25:27,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091581418] [2024-11-10 22:25:27,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:27,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 22:25:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 22:25:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 22:25:27,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:27,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 104 transitions, 927 flow. Second operand has 33 states, 33 states have (on average 17.393939393939394) internal successors, (574), 33 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:27,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:27,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:29,283 INFO L124 PetriNetUnfolderBase]: 3124/6575 cut-off events. [2024-11-10 22:25:29,283 INFO L125 PetriNetUnfolderBase]: For 44280/44411 co-relation queries the response was YES. [2024-11-10 22:25:29,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30345 conditions, 6575 events. 3124/6575 cut-off events. For 44280/44411 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 49589 event pairs, 588 based on Foata normal form. 142/6682 useless extension candidates. Maximal degree in co-relation 30306. Up to 1653 conditions per place. [2024-11-10 22:25:29,335 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 215 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-11-10 22:25:29,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 278 transitions, 3089 flow [2024-11-10 22:25:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:25:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:25:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 428 transitions. [2024-11-10 22:25:29,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40956937799043064 [2024-11-10 22:25:29,337 INFO L175 Difference]: Start difference. First operand has 158 places, 104 transitions, 927 flow. Second operand 19 states and 428 transitions. [2024-11-10 22:25:29,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 278 transitions, 3089 flow [2024-11-10 22:25:29,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 278 transitions, 2875 flow, removed 37 selfloop flow, removed 17 redundant places. [2024-11-10 22:25:29,404 INFO L231 Difference]: Finished difference. Result has 141 places, 107 transitions, 1005 flow [2024-11-10 22:25:29,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1005, PETRI_PLACES=141, PETRI_TRANSITIONS=107} [2024-11-10 22:25:29,405 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-11-10 22:25:29,405 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 107 transitions, 1005 flow [2024-11-10 22:25:29,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 17.393939393939394) internal successors, (574), 33 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:29,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:29,406 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:29,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:29,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-10 22:25:29,607 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:29,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 217584744, now seen corresponding path program 4 times [2024-11-10 22:25:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094533905] [2024-11-10 22:25:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094533905] [2024-11-10 22:25:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094533905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472493539] [2024-11-10 22:25:30,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:25:30,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:30,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:30,054 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:30,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 22:25:30,147 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:25:30,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:30,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 22:25:30,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:30,210 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 19 treesize of output 1 [2024-11-10 22:25:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:30,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:30,576 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 16 treesize of output 14 [2024-11-10 22:25:30,579 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 20 treesize of output 16 [2024-11-10 22:25:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:30,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472493539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:30,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-10 22:25:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395487729] [2024-11-10 22:25:30,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:30,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 22:25:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 22:25:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 22:25:30,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:30,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 107 transitions, 1005 flow. Second operand has 33 states, 33 states have (on average 17.575757575757574) internal successors, (580), 33 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:30,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:30,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:30,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:32,459 INFO L124 PetriNetUnfolderBase]: 2911/6052 cut-off events. [2024-11-10 22:25:32,459 INFO L125 PetriNetUnfolderBase]: For 55945/56357 co-relation queries the response was YES. [2024-11-10 22:25:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28648 conditions, 6052 events. 2911/6052 cut-off events. For 55945/56357 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43947 event pairs, 522 based on Foata normal form. 339/6071 useless extension candidates. Maximal degree in co-relation 28615. Up to 1485 conditions per place. [2024-11-10 22:25:32,505 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 380 selfloop transitions, 26 changer transitions 0/433 dead transitions. [2024-11-10 22:25:32,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 433 transitions, 6153 flow [2024-11-10 22:25:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:25:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:25:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 419 transitions. [2024-11-10 22:25:32,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40095693779904307 [2024-11-10 22:25:32,508 INFO L175 Difference]: Start difference. First operand has 141 places, 107 transitions, 1005 flow. Second operand 19 states and 419 transitions. [2024-11-10 22:25:32,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 433 transitions, 6153 flow [2024-11-10 22:25:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 433 transitions, 5131 flow, removed 12 selfloop flow, removed 18 redundant places. [2024-11-10 22:25:32,559 INFO L231 Difference]: Finished difference. Result has 143 places, 109 transitions, 954 flow [2024-11-10 22:25:32,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=954, PETRI_PLACES=143, PETRI_TRANSITIONS=109} [2024-11-10 22:25:32,560 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-11-10 22:25:32,560 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 109 transitions, 954 flow [2024-11-10 22:25:32,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 17.575757575757574) internal successors, (580), 33 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:32,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:32,561 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:32,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-10 22:25:32,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 22:25:32,761 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:32,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash 217584745, now seen corresponding path program 2 times [2024-11-10 22:25:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911559149] [2024-11-10 22:25:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:33,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911559149] [2024-11-10 22:25:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911559149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101348765] [2024-11-10 22:25:33,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:33,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:33,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:33,147 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:33,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 22:25:33,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:25:33,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:33,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 22:25:33,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:33,279 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 15 treesize of output 1 [2024-11-10 22:25:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:33,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:33,565 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 18 treesize of output 16 [2024-11-10 22:25:33,568 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 24 treesize of output 20 [2024-11-10 22:25:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101348765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:33,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-10 22:25:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172362663] [2024-11-10 22:25:33,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:33,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 22:25:33,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 22:25:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-10 22:25:33,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:33,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 109 transitions, 954 flow. Second operand has 29 states, 29 states have (on average 17.482758620689655) internal successors, (507), 29 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:33,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:33,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:33,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:35,197 INFO L124 PetriNetUnfolderBase]: 2800/5787 cut-off events. [2024-11-10 22:25:35,197 INFO L125 PetriNetUnfolderBase]: For 43619/44007 co-relation queries the response was YES. [2024-11-10 22:25:35,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26836 conditions, 5787 events. 2800/5787 cut-off events. For 43619/44007 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 41470 event pairs, 522 based on Foata normal form. 323/5700 useless extension candidates. Maximal degree in co-relation 26802. Up to 1485 conditions per place. [2024-11-10 22:25:35,239 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 379 selfloop transitions, 26 changer transitions 0/432 dead transitions. [2024-11-10 22:25:35,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 432 transitions, 5194 flow [2024-11-10 22:25:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:25:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:25:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 418 transitions. [2024-11-10 22:25:35,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-10 22:25:35,241 INFO L175 Difference]: Start difference. First operand has 143 places, 109 transitions, 954 flow. Second operand 19 states and 418 transitions. [2024-11-10 22:25:35,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 432 transitions, 5194 flow [2024-11-10 22:25:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 432 transitions, 5112 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-11-10 22:25:35,281 INFO L231 Difference]: Finished difference. Result has 143 places, 108 transitions, 916 flow [2024-11-10 22:25:35,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=916, PETRI_PLACES=143, PETRI_TRANSITIONS=108} [2024-11-10 22:25:35,281 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-11-10 22:25:35,281 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 108 transitions, 916 flow [2024-11-10 22:25:35,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.482758620689655) internal successors, (507), 29 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:35,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:35,282 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:35,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:35,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:35,483 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:35,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1125889352, now seen corresponding path program 4 times [2024-11-10 22:25:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:35,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918759832] [2024-11-10 22:25:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918759832] [2024-11-10 22:25:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918759832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575309524] [2024-11-10 22:25:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:25:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:35,948 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:35,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 22:25:36,064 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:25:36,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:36,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-10 22:25:36,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:36,158 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 19 treesize of output 1 [2024-11-10 22:25:36,228 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-10 22:25:36,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:25:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:36,967 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 21 [2024-11-10 22:25:36,971 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 46 treesize of output 42 [2024-11-10 22:25:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:37,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575309524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:37,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-10 22:25:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520853363] [2024-11-10 22:25:37,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:37,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-10 22:25:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-10 22:25:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 22:25:37,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:37,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 108 transitions, 916 flow. Second operand has 39 states, 39 states have (on average 17.333333333333332) internal successors, (676), 39 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:37,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:37,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:37,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:39,102 INFO L124 PetriNetUnfolderBase]: 2772/5691 cut-off events. [2024-11-10 22:25:39,102 INFO L125 PetriNetUnfolderBase]: For 36785/36991 co-relation queries the response was YES. [2024-11-10 22:25:39,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26191 conditions, 5691 events. 2772/5691 cut-off events. For 36785/36991 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 40287 event pairs, 330 based on Foata normal form. 184/5663 useless extension candidates. Maximal degree in co-relation 26158. Up to 1309 conditions per place. [2024-11-10 22:25:39,139 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 217 selfloop transitions, 48 changer transitions 0/287 dead transitions. [2024-11-10 22:25:39,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 287 transitions, 3128 flow [2024-11-10 22:25:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 22:25:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 22:25:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 443 transitions. [2024-11-10 22:25:39,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027272727272727 [2024-11-10 22:25:39,140 INFO L175 Difference]: Start difference. First operand has 143 places, 108 transitions, 916 flow. Second operand 20 states and 443 transitions. [2024-11-10 22:25:39,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 287 transitions, 3128 flow [2024-11-10 22:25:39,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 287 transitions, 2891 flow, removed 12 selfloop flow, removed 17 redundant places. [2024-11-10 22:25:39,177 INFO L231 Difference]: Finished difference. Result has 145 places, 107 transitions, 954 flow [2024-11-10 22:25:39,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=954, PETRI_PLACES=145, PETRI_TRANSITIONS=107} [2024-11-10 22:25:39,178 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2024-11-10 22:25:39,178 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 107 transitions, 954 flow [2024-11-10 22:25:39,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 17.333333333333332) internal successors, (676), 39 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:39,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:39,179 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:39,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-10 22:25:39,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,379 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:39,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1610184610, now seen corresponding path program 3 times [2024-11-10 22:25:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893488865] [2024-11-10 22:25:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893488865] [2024-11-10 22:25:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893488865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766747758] [2024-11-10 22:25:39,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:25:39,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:39,619 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:39,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 22:25:39,735 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 22:25:39,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:39,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 22:25:39,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:40,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766747758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:40,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:40,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-10 22:25:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395333299] [2024-11-10 22:25:40,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:40,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-10 22:25:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-10 22:25:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-11-10 22:25:40,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:40,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 107 transitions, 954 flow. Second operand has 40 states, 40 states have (on average 14.5) internal successors, (580), 40 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:40,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:40,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:40,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:41,687 INFO L124 PetriNetUnfolderBase]: 3230/6048 cut-off events. [2024-11-10 22:25:41,687 INFO L125 PetriNetUnfolderBase]: For 32123/32197 co-relation queries the response was YES. [2024-11-10 22:25:41,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27389 conditions, 6048 events. 3230/6048 cut-off events. For 32123/32197 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 41193 event pairs, 1359 based on Foata normal form. 34/5846 useless extension candidates. Maximal degree in co-relation 27357. Up to 2693 conditions per place. [2024-11-10 22:25:41,728 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 240 selfloop transitions, 34 changer transitions 60/348 dead transitions. [2024-11-10 22:25:41,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 348 transitions, 3577 flow [2024-11-10 22:25:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:25:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:25:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 467 transitions. [2024-11-10 22:25:41,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3691699604743083 [2024-11-10 22:25:41,729 INFO L175 Difference]: Start difference. First operand has 145 places, 107 transitions, 954 flow. Second operand 23 states and 467 transitions. [2024-11-10 22:25:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 348 transitions, 3577 flow [2024-11-10 22:25:41,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 348 transitions, 3497 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-11-10 22:25:41,765 INFO L231 Difference]: Finished difference. Result has 151 places, 101 transitions, 870 flow [2024-11-10 22:25:41,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=870, PETRI_PLACES=151, PETRI_TRANSITIONS=101} [2024-11-10 22:25:41,766 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-11-10 22:25:41,766 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 101 transitions, 870 flow [2024-11-10 22:25:41,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 14.5) internal successors, (580), 40 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:41,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:41,767 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:41,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-10 22:25:41,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:41,967 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:41,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1703233566, now seen corresponding path program 3 times [2024-11-10 22:25:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21616572] [2024-11-10 22:25:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21616572] [2024-11-10 22:25:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21616572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122902228] [2024-11-10 22:25:42,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:25:42,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:42,209 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:42,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 22:25:42,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 22:25:42,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:42,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 22:25:42,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:42,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122902228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:42,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-10 22:25:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791260670] [2024-11-10 22:25:42,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:42,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-10 22:25:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-10 22:25:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-11-10 22:25:43,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:25:43,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 101 transitions, 870 flow. Second operand has 40 states, 40 states have (on average 14.55) internal successors, (582), 40 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:43,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:43,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:25:43,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:44,076 INFO L124 PetriNetUnfolderBase]: 2696/4725 cut-off events. [2024-11-10 22:25:44,077 INFO L125 PetriNetUnfolderBase]: For 30163/30416 co-relation queries the response was YES. [2024-11-10 22:25:44,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22592 conditions, 4725 events. 2696/4725 cut-off events. For 30163/30416 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 29789 event pairs, 1301 based on Foata normal form. 64/4517 useless extension candidates. Maximal degree in co-relation 22559. Up to 2673 conditions per place. [2024-11-10 22:25:44,100 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 61 selfloop transitions, 18 changer transitions 186/279 dead transitions. [2024-11-10 22:25:44,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 279 transitions, 3152 flow [2024-11-10 22:25:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:25:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:25:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 434 transitions. [2024-11-10 22:25:44,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3430830039525692 [2024-11-10 22:25:44,101 INFO L175 Difference]: Start difference. First operand has 151 places, 101 transitions, 870 flow. Second operand 23 states and 434 transitions. [2024-11-10 22:25:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 279 transitions, 3152 flow [2024-11-10 22:25:44,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 279 transitions, 2946 flow, removed 24 selfloop flow, removed 15 redundant places. [2024-11-10 22:25:44,121 INFO L231 Difference]: Finished difference. Result has 166 places, 79 transitions, 648 flow [2024-11-10 22:25:44,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=648, PETRI_PLACES=166, PETRI_TRANSITIONS=79} [2024-11-10 22:25:44,121 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 114 predicate places. [2024-11-10 22:25:44,121 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 79 transitions, 648 flow [2024-11-10 22:25:44,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 14.55) internal successors, (582), 40 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:44,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:44,122 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:44,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:44,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-10 22:25:44,322 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:44,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:44,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1144430272, now seen corresponding path program 4 times [2024-11-10 22:25:44,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:44,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112545497] [2024-11-10 22:25:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112545497] [2024-11-10 22:25:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112545497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627019239] [2024-11-10 22:25:44,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:25:44,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:44,836 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:44,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 22:25:44,945 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:25:44,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:44,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 22:25:44,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:45,054 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 19 treesize of output 1 [2024-11-10 22:25:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:45,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:45,571 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 18 treesize of output 16 [2024-11-10 22:25:45,573 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 24 treesize of output 20 [2024-11-10 22:25:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627019239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:45,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-10 22:25:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488070437] [2024-11-10 22:25:45,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:45,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 22:25:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 22:25:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 22:25:46,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:46,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 79 transitions, 648 flow. Second operand has 43 states, 43 states have (on average 17.372093023255815) internal successors, (747), 43 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:46,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:46,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:46,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:47,852 INFO L124 PetriNetUnfolderBase]: 1387/2958 cut-off events. [2024-11-10 22:25:47,852 INFO L125 PetriNetUnfolderBase]: For 17155/17181 co-relation queries the response was YES. [2024-11-10 22:25:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13374 conditions, 2958 events. 1387/2958 cut-off events. For 17155/17181 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 18393 event pairs, 158 based on Foata normal form. 34/2896 useless extension candidates. Maximal degree in co-relation 13341. Up to 563 conditions per place. [2024-11-10 22:25:47,871 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 274 selfloop transitions, 30 changer transitions 0/321 dead transitions. [2024-11-10 22:25:47,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 321 transitions, 3496 flow [2024-11-10 22:25:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:25:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:25:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 541 transitions. [2024-11-10 22:25:47,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40984848484848485 [2024-11-10 22:25:47,873 INFO L175 Difference]: Start difference. First operand has 166 places, 79 transitions, 648 flow. Second operand 24 states and 541 transitions. [2024-11-10 22:25:47,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 321 transitions, 3496 flow [2024-11-10 22:25:47,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 321 transitions, 3178 flow, removed 62 selfloop flow, removed 23 redundant places. [2024-11-10 22:25:47,891 INFO L231 Difference]: Finished difference. Result has 139 places, 81 transitions, 646 flow [2024-11-10 22:25:47,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=646, PETRI_PLACES=139, PETRI_TRANSITIONS=81} [2024-11-10 22:25:47,892 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-10 22:25:47,892 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 81 transitions, 646 flow [2024-11-10 22:25:47,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 17.372093023255815) internal successors, (747), 43 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:47,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:47,893 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:47,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:48,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 22:25:48,093 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:48,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1144430273, now seen corresponding path program 5 times [2024-11-10 22:25:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155331537] [2024-11-10 22:25:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:48,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155331537] [2024-11-10 22:25:48,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155331537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277195868] [2024-11-10 22:25:48,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:25:48,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:48,531 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:48,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 22:25:48,639 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 22:25:48,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:48,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 22:25:48,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:48,746 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 19 treesize of output 1 [2024-11-10 22:25:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:48,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:49,254 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 16 treesize of output 14 [2024-11-10 22:25:49,256 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 20 treesize of output 16 [2024-11-10 22:25:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:49,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277195868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:49,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:49,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-10 22:25:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115659595] [2024-11-10 22:25:49,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:49,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 22:25:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 22:25:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 22:25:49,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:49,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 81 transitions, 646 flow. Second operand has 43 states, 43 states have (on average 17.372093023255815) internal successors, (747), 43 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:49,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:49,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:49,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:51,569 INFO L124 PetriNetUnfolderBase]: 1329/2848 cut-off events. [2024-11-10 22:25:51,569 INFO L125 PetriNetUnfolderBase]: For 16844/16870 co-relation queries the response was YES. [2024-11-10 22:25:51,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 2848 events. 1329/2848 cut-off events. For 16844/16870 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17676 event pairs, 158 based on Foata normal form. 34/2749 useless extension candidates. Maximal degree in co-relation 12301. Up to 563 conditions per place. [2024-11-10 22:25:51,586 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 273 selfloop transitions, 30 changer transitions 0/320 dead transitions. [2024-11-10 22:25:51,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 320 transitions, 3245 flow [2024-11-10 22:25:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:25:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:25:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 540 transitions. [2024-11-10 22:25:51,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-10 22:25:51,587 INFO L175 Difference]: Start difference. First operand has 139 places, 81 transitions, 646 flow. Second operand 24 states and 540 transitions. [2024-11-10 22:25:51,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 320 transitions, 3245 flow [2024-11-10 22:25:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 320 transitions, 3155 flow, removed 2 selfloop flow, removed 23 redundant places. [2024-11-10 22:25:51,604 INFO L231 Difference]: Finished difference. Result has 139 places, 80 transitions, 605 flow [2024-11-10 22:25:51,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=605, PETRI_PLACES=139, PETRI_TRANSITIONS=80} [2024-11-10 22:25:51,604 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-10 22:25:51,604 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 80 transitions, 605 flow [2024-11-10 22:25:51,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 17.372093023255815) internal successors, (747), 43 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:51,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:51,605 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:51,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-10 22:25:51,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-10 22:25:51,805 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -218186300, now seen corresponding path program 4 times [2024-11-10 22:25:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768463978] [2024-11-10 22:25:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:52,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768463978] [2024-11-10 22:25:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768463978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375281214] [2024-11-10 22:25:52,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:25:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:52,319 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:52,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 22:25:52,464 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:25:52,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:52,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 22:25:52,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:52,613 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 19 treesize of output 1 [2024-11-10 22:25:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:52,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:53,140 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 18 treesize of output 16 [2024-11-10 22:25:53,143 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 24 treesize of output 20 [2024-11-10 22:25:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375281214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:53,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-10 22:25:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160276115] [2024-11-10 22:25:53,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:53,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 22:25:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 22:25:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 22:25:53,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:53,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 80 transitions, 605 flow. Second operand has 43 states, 43 states have (on average 17.511627906976745) internal successors, (753), 43 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:53,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:53,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:53,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:55,558 INFO L124 PetriNetUnfolderBase]: 1236/2485 cut-off events. [2024-11-10 22:25:55,558 INFO L125 PetriNetUnfolderBase]: For 13271/13312 co-relation queries the response was YES. [2024-11-10 22:25:55,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11012 conditions, 2485 events. 1236/2485 cut-off events. For 13271/13312 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14887 event pairs, 169 based on Foata normal form. 29/2287 useless extension candidates. Maximal degree in co-relation 10988. Up to 520 conditions per place. [2024-11-10 22:25:55,573 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 275 selfloop transitions, 30 changer transitions 0/322 dead transitions. [2024-11-10 22:25:55,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 322 transitions, 3635 flow [2024-11-10 22:25:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:25:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:25:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 529 transitions. [2024-11-10 22:25:55,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40075757575757576 [2024-11-10 22:25:55,575 INFO L175 Difference]: Start difference. First operand has 139 places, 80 transitions, 605 flow. Second operand 24 states and 529 transitions. [2024-11-10 22:25:55,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 322 transitions, 3635 flow [2024-11-10 22:25:55,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 322 transitions, 3282 flow, removed 13 selfloop flow, removed 22 redundant places. [2024-11-10 22:25:55,587 INFO L231 Difference]: Finished difference. Result has 142 places, 82 transitions, 652 flow [2024-11-10 22:25:55,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=652, PETRI_PLACES=142, PETRI_TRANSITIONS=82} [2024-11-10 22:25:55,587 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-11-10 22:25:55,588 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 82 transitions, 652 flow [2024-11-10 22:25:55,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 17.511627906976745) internal successors, (753), 43 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:55,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:55,588 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:55,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:55,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:55,789 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:55,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash -218186301, now seen corresponding path program 5 times [2024-11-10 22:25:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:55,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497549342] [2024-11-10 22:25:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:55,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:56,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497549342] [2024-11-10 22:25:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497549342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496361778] [2024-11-10 22:25:56,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:25:56,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:56,277 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 22:25:56,395 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 22:25:56,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:56,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-10 22:25:56,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:56,437 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 15 treesize of output 1 [2024-11-10 22:25:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:56,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:56,818 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 16 treesize of output 14 [2024-11-10 22:25:56,821 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 20 treesize of output 16 [2024-11-10 22:25:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496361778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:56,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-10 22:25:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821120926] [2024-11-10 22:25:56,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:56,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-10 22:25:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-10 22:25:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 22:25:57,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:25:57,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 82 transitions, 652 flow. Second operand has 39 states, 39 states have (on average 17.435897435897434) internal successors, (680), 39 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:57,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:57,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:25:57,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:58,936 INFO L124 PetriNetUnfolderBase]: 1185/2447 cut-off events. [2024-11-10 22:25:58,937 INFO L125 PetriNetUnfolderBase]: For 14045/14084 co-relation queries the response was YES. [2024-11-10 22:25:58,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10873 conditions, 2447 events. 1185/2447 cut-off events. For 14045/14084 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14682 event pairs, 169 based on Foata normal form. 29/2291 useless extension candidates. Maximal degree in co-relation 10848. Up to 520 conditions per place. [2024-11-10 22:25:58,950 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 274 selfloop transitions, 30 changer transitions 0/321 dead transitions. [2024-11-10 22:25:58,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 321 transitions, 3348 flow [2024-11-10 22:25:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:25:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:25:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 528 transitions. [2024-11-10 22:25:58,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-10 22:25:58,951 INFO L175 Difference]: Start difference. First operand has 142 places, 82 transitions, 652 flow. Second operand 24 states and 528 transitions. [2024-11-10 22:25:58,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 321 transitions, 3348 flow [2024-11-10 22:25:58,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 321 transitions, 3256 flow, removed 3 selfloop flow, removed 23 redundant places. [2024-11-10 22:25:58,965 INFO L231 Difference]: Finished difference. Result has 142 places, 81 transitions, 608 flow [2024-11-10 22:25:58,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=608, PETRI_PLACES=142, PETRI_TRANSITIONS=81} [2024-11-10 22:25:58,965 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-11-10 22:25:58,965 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 81 transitions, 608 flow [2024-11-10 22:25:58,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 17.435897435897434) internal successors, (680), 39 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:58,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:58,966 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:58,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-10 22:25:59,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-10 22:25:59,167 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:25:59,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 378587514, now seen corresponding path program 6 times [2024-11-10 22:25:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981020436] [2024-11-10 22:25:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981020436] [2024-11-10 22:25:59,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981020436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664532157] [2024-11-10 22:25:59,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 22:25:59,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:59,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:59,475 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:59,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-10 22:25:59,594 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-10 22:25:59,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:59,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:25:59,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:59,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664532157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:00,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:00,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-10 22:26:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545123716] [2024-11-10 22:26:00,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:00,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-10 22:26:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-10 22:26:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 22:26:00,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:26:00,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 81 transitions, 608 flow. Second operand has 50 states, 50 states have (on average 14.48) internal successors, (724), 50 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:00,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:00,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:26:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:02,318 INFO L124 PetriNetUnfolderBase]: 3081/5636 cut-off events. [2024-11-10 22:26:02,318 INFO L125 PetriNetUnfolderBase]: For 25533/25617 co-relation queries the response was YES. [2024-11-10 22:26:02,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24627 conditions, 5636 events. 3081/5636 cut-off events. For 25533/25617 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 37142 event pairs, 1110 based on Foata normal form. 30/5431 useless extension candidates. Maximal degree in co-relation 24603. Up to 2236 conditions per place. [2024-11-10 22:26:02,345 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 303 selfloop transitions, 38 changer transitions 75/430 dead transitions. [2024-11-10 22:26:02,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 430 transitions, 4583 flow [2024-11-10 22:26:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:26:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:26:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 567 transitions. [2024-11-10 22:26:02,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36818181818181817 [2024-11-10 22:26:02,347 INFO L175 Difference]: Start difference. First operand has 142 places, 81 transitions, 608 flow. Second operand 28 states and 567 transitions. [2024-11-10 22:26:02,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 430 transitions, 4583 flow [2024-11-10 22:26:02,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 430 transitions, 4149 flow, removed 16 selfloop flow, removed 22 redundant places. [2024-11-10 22:26:02,375 INFO L231 Difference]: Finished difference. Result has 158 places, 101 transitions, 836 flow [2024-11-10 22:26:02,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=836, PETRI_PLACES=158, PETRI_TRANSITIONS=101} [2024-11-10 22:26:02,375 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-11-10 22:26:02,375 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 101 transitions, 836 flow [2024-11-10 22:26:02,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 14.48) internal successors, (724), 50 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:02,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:02,376 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:02,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-10 22:26:02,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-10 22:26:02,576 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:26:02,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash 787853564, now seen corresponding path program 6 times [2024-11-10 22:26:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:02,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195942756] [2024-11-10 22:26:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:02,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:02,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195942756] [2024-11-10 22:26:02,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195942756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069512017] [2024-11-10 22:26:02,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 22:26:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:02,917 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:02,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-10 22:26:03,072 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-10 22:26:03,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:26:03,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:26:03,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:03,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069512017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:03,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:03,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-10 22:26:03,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423744396] [2024-11-10 22:26:03,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:03,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-10 22:26:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-10 22:26:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 22:26:04,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-11-10 22:26:04,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 101 transitions, 836 flow. Second operand has 50 states, 50 states have (on average 14.52) internal successors, (726), 50 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:04,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:04,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-11-10 22:26:04,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:05,360 INFO L124 PetriNetUnfolderBase]: 2770/4844 cut-off events. [2024-11-10 22:26:05,360 INFO L125 PetriNetUnfolderBase]: For 24485/24779 co-relation queries the response was YES. [2024-11-10 22:26:05,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22417 conditions, 4844 events. 2770/4844 cut-off events. For 24485/24779 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 30361 event pairs, 1073 based on Foata normal form. 188/4741 useless extension candidates. Maximal degree in co-relation 22383. Up to 2216 conditions per place. [2024-11-10 22:26:05,382 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 63 selfloop transitions, 18 changer transitions 274/369 dead transitions. [2024-11-10 22:26:05,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 369 transitions, 4150 flow [2024-11-10 22:26:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:26:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:26:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 525 transitions. [2024-11-10 22:26:05,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-11-10 22:26:05,384 INFO L175 Difference]: Start difference. First operand has 158 places, 101 transitions, 836 flow. Second operand 28 states and 525 transitions. [2024-11-10 22:26:05,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 369 transitions, 4150 flow [2024-11-10 22:26:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 369 transitions, 4048 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-11-10 22:26:05,405 INFO L231 Difference]: Finished difference. Result has 186 places, 80 transitions, 640 flow [2024-11-10 22:26:05,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=640, PETRI_PLACES=186, PETRI_TRANSITIONS=80} [2024-11-10 22:26:05,406 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 134 predicate places. [2024-11-10 22:26:05,406 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 80 transitions, 640 flow [2024-11-10 22:26:05,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 14.52) internal successors, (726), 50 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:05,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:05,407 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:05,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-10 22:26:05,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-10 22:26:05,610 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:26:05,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash -441856676, now seen corresponding path program 7 times [2024-11-10 22:26:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701788019] [2024-11-10 22:26:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:05,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701788019] [2024-11-10 22:26:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701788019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434411890] [2024-11-10 22:26:06,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 22:26:06,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:06,262 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:06,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-10 22:26:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:06,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 22:26:06,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:06,582 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 19 treesize of output 1 [2024-11-10 22:26:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:06,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:07,245 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 16 treesize of output 14 [2024-11-10 22:26:07,247 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 20 treesize of output 16 [2024-11-10 22:26:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:07,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434411890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:07,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:07,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-10 22:26:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58582537] [2024-11-10 22:26:07,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:07,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-10 22:26:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-10 22:26:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2594, Unknown=0, NotChecked=0, Total=2756 [2024-11-10 22:26:08,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-10 22:26:08,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 80 transitions, 640 flow. Second operand has 53 states, 53 states have (on average 17.358490566037737) internal successors, (920), 53 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:08,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:08,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-10 22:26:08,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:10,796 INFO L124 PetriNetUnfolderBase]: 1480/3087 cut-off events. [2024-11-10 22:26:10,796 INFO L125 PetriNetUnfolderBase]: For 15975/16011 co-relation queries the response was YES. [2024-11-10 22:26:10,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14043 conditions, 3087 events. 1480/3087 cut-off events. For 15975/16011 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 18971 event pairs, 107 based on Foata normal form. 30/3042 useless extension candidates. Maximal degree in co-relation 13998. Up to 532 conditions per place. [2024-11-10 22:26:10,817 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 349 selfloop transitions, 35 changer transitions 0/401 dead transitions. [2024-11-10 22:26:10,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 401 transitions, 4318 flow [2024-11-10 22:26:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 22:26:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 22:26:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 655 transitions. [2024-11-10 22:26:10,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4106583072100313 [2024-11-10 22:26:10,819 INFO L175 Difference]: Start difference. First operand has 186 places, 80 transitions, 640 flow. Second operand 29 states and 655 transitions. [2024-11-10 22:26:10,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 401 transitions, 4318 flow [2024-11-10 22:26:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 401 transitions, 3922 flow, removed 95 selfloop flow, removed 35 redundant places. [2024-11-10 22:26:10,855 INFO L231 Difference]: Finished difference. Result has 151 places, 84 transitions, 680 flow [2024-11-10 22:26:10,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=680, PETRI_PLACES=151, PETRI_TRANSITIONS=84} [2024-11-10 22:26:10,855 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-11-10 22:26:10,855 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 84 transitions, 680 flow [2024-11-10 22:26:10,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 17.358490566037737) internal successors, (920), 53 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:10,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:10,856 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:10,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-10 22:26:11,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-10 22:26:11,057 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-10 22:26:11,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash -441856677, now seen corresponding path program 5 times [2024-11-10 22:26:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680977037] [2024-11-10 22:26:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680977037] [2024-11-10 22:26:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680977037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371029009] [2024-11-10 22:26:11,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:26:11,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:11,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:11,596 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:11,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-10 22:26:11,729 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-10 22:26:11,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:26:11,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 22:26:11,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:11,897 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 19 treesize of output 1 [2024-11-10 22:26:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:12,324 INFO L311 TraceCheckSpWp]: Computing backward predicates...