./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 8be7027f 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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:45:06,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:45:06,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:45:06,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:45:06,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:45:06,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:45:06,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:45:06,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:45:06,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:45:06,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:45:06,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:45:06,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:45:06,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:45:06,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:45:06,922 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:45:06,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:45:06,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:45:06,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:45:06,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:45:06,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:45:06,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:45:06,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:45:06,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:45:06,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:45:06,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:45:06,929 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:45:06,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:45:06,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:45:06,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:45:06,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:45:06,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:45:06,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:45:06,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:45:06,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:45:06,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:45:06,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:45:06,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:45:06,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:45:06,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:45:06,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:45:06,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:45:06,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:45:06,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:45:06,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:45:06,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-11-12 20:45:07,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:45:07,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:45:07,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:45:07,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:45:07,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:45:07,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-12 20:45:08,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:45:08,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:45:08,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-12 20:45:08,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca505f2c/c2affd3c628146a9a8ee15e87be1dc77/FLAG1d9b2c030 [2024-11-12 20:45:08,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca505f2c/c2affd3c628146a9a8ee15e87be1dc77 [2024-11-12 20:45:08,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:45:08,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:45:08,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:45:08,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:45:08,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:45:08,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:45:08" (1/1) ... [2024-11-12 20:45:08,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aaadaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:08, skipping insertion in model container [2024-11-12 20:45:08,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:45:08" (1/1) ... [2024-11-12 20:45:08,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:45:09,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:45:09,201 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:45:09,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:45:09,240 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:45:09,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09 WrapperNode [2024-11-12 20:45:09,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:45:09,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:45:09,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:45:09,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:45:09,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,282 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 168 [2024-11-12 20:45:09,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:45:09,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:45:09,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:45:09,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:45:09,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,317 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]. [2024-11-12 20:45:09,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:45:09,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:45:09,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:45:09,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:45:09,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (1/1) ... [2024-11-12 20:45:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:45:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:09,372 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) [2024-11-12 20:45:09,379 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 [2024-11-12 20:45:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:45:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:45:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:45:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:45:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:45:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:45:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:45:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:45:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:45:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:45:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:45:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:45:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:45:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:45:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:45:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:45:09,435 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:45:09,582 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:45:09,586 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:45:10,012 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:45:10,012 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:45:10,406 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:45:10,407 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 20:45:10,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:45:10 BoogieIcfgContainer [2024-11-12 20:45:10,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:45:10,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:45:10,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:45:10,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:45:10,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:45:08" (1/3) ... [2024-11-12 20:45:10,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:45:10, skipping insertion in model container [2024-11-12 20:45:10,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:45:09" (2/3) ... [2024-11-12 20:45:10,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:45:10, skipping insertion in model container [2024-11-12 20:45:10,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:45:10" (3/3) ... [2024-11-12 20:45:10,417 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-11-12 20:45:10,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:45:10,435 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-12 20:45:10,435 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:45:10,532 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:45:10,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 106 flow [2024-11-12 20:45:10,614 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2024-11-12 20:45:10,615 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:45:10,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 3/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 132 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-12 20:45:10,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 106 flow [2024-11-12 20:45:10,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 93 flow [2024-11-12 20:45:10,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:45:10,647 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;@558fb67b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:45:10,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-12 20:45:10,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:45:10,652 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:45:10,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:45:10,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:10,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:45:10,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:10,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash 598642, now seen corresponding path program 1 times [2024-11-12 20:45:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322188275] [2024-11-12 20:45:10,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:10,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:10,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322188275] [2024-11-12 20:45:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322188275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:10,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:10,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:45:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817837338] [2024-11-12 20:45:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:10,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:11,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 20:45:11,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-12 20:45:11,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:11,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 20:45:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:11,351 INFO L124 PetriNetUnfolderBase]: 219/470 cut-off events. [2024-11-12 20:45:11,351 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-12 20:45:11,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 470 events. 219/470 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2654 event pairs, 182 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 810. Up to 377 conditions per place. [2024-11-12 20:45:11,361 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 26 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-12 20:45:11,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 151 flow [2024-11-12 20:45:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-12 20:45:11,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-12 20:45:11,380 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 93 flow. Second operand 4 states and 88 transitions. [2024-11-12 20:45:11,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 151 flow [2024-11-12 20:45:11,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:45:11,388 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 109 flow [2024-11-12 20:45:11,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-12 20:45:11,395 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-12 20:45:11,398 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 109 flow [2024-11-12 20:45:11,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-12 20:45:11,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:11,399 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:45:11,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:45:11,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:11,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 654841567, now seen corresponding path program 1 times [2024-11-12 20:45:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578590804] [2024-11-12 20:45:11,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:11,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578590804] [2024-11-12 20:45:11,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578590804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597478919] [2024-11-12 20:45:11,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:11,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:11,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:11,542 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) [2024-11-12 20:45:11,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:45:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:11,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:11,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:11,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:45:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597478919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:45:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:45:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92733193] [2024-11-12 20:45:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:11,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:11,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 20:45:11,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-11-12 20:45:11,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:11,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 20:45:11,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:11,907 INFO L124 PetriNetUnfolderBase]: 219/469 cut-off events. [2024-11-12 20:45:11,907 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-12 20:45:11,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 469 events. 219/469 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2662 event pairs, 182 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 852. Up to 372 conditions per place. [2024-11-12 20:45:11,915 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-12 20:45:11,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 163 flow [2024-11-12 20:45:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-12 20:45:11,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-11-12 20:45:11,918 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 109 flow. Second operand 6 states and 108 transitions. [2024-11-12 20:45:11,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 163 flow [2024-11-12 20:45:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:11,921 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2024-11-12 20:45:11,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-12 20:45:11,922 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2024-11-12 20:45:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2024-11-12 20:45:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-11-12 20:45:11,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:11,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:45:11,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:12,128 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 [2024-11-12 20:45:12,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:12,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 657169346, now seen corresponding path program 1 times [2024-11-12 20:45:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:12,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488654892] [2024-11-12 20:45:12,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488654892] [2024-11-12 20:45:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488654892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:12,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:12,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589385759] [2024-11-12 20:45:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:12,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:12,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 20:45:12,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-12 20:45:12,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:12,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 20:45:12,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:12,493 INFO L124 PetriNetUnfolderBase]: 313/678 cut-off events. [2024-11-12 20:45:12,493 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-12 20:45:12,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 678 events. 313/678 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3922 event pairs, 244 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 958. Up to 418 conditions per place. [2024-11-12 20:45:12,498 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 5 changer transitions 2/66 dead transitions. [2024-11-12 20:45:12,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2024-11-12 20:45:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:45:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:45:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-12 20:45:12,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-11-12 20:45:12,500 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 5 states and 126 transitions. [2024-11-12 20:45:12,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2024-11-12 20:45:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 262 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:12,503 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2024-11-12 20:45:12,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-11-12 20:45:12,503 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-12 20:45:12,504 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2024-11-12 20:45:12,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-12 20:45:12,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:12,504 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:45:12,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:45:12,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:12,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1174747332, now seen corresponding path program 1 times [2024-11-12 20:45:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990783763] [2024-11-12 20:45:12,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990783763] [2024-11-12 20:45:12,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990783763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364246409] [2024-11-12 20:45:12,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:12,611 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) [2024-11-12 20:45:12,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:45:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:12,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:12,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364246409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:12,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:12,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:45:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792758907] [2024-11-12 20:45:12,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:12,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:45:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:45:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:45:12,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 20:45:12,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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) [2024-11-12 20:45:12,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:12,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 20:45:12,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:13,024 INFO L124 PetriNetUnfolderBase]: 290/642 cut-off events. [2024-11-12 20:45:13,024 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-12 20:45:13,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 642 events. 290/642 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3784 event pairs, 244 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 936. Up to 510 conditions per place. [2024-11-12 20:45:13,029 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-12 20:45:13,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 229 flow [2024-11-12 20:45:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-11-12 20:45:13,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2024-11-12 20:45:13,032 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 10 states and 171 transitions. [2024-11-12 20:45:13,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 229 flow [2024-11-12 20:45:13,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:13,035 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 188 flow [2024-11-12 20:45:13,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-12 20:45:13,036 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-12 20:45:13,036 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 188 flow [2024-11-12 20:45:13,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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) [2024-11-12 20:45:13,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:13,037 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:13,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:45:13,241 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,SelfDestructingSolverStorable3 [2024-11-12 20:45:13,242 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:13,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 169449540, now seen corresponding path program 1 times [2024-11-12 20:45:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985413010] [2024-11-12 20:45:13,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:13,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985413010] [2024-11-12 20:45:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985413010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:45:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845653965] [2024-11-12 20:45:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:13,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:45:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:45:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:45:13,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 20:45:13,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:13,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:13,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 20:45:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:13,483 INFO L124 PetriNetUnfolderBase]: 268/551 cut-off events. [2024-11-12 20:45:13,483 INFO L125 PetriNetUnfolderBase]: For 124/142 co-relation queries the response was YES. [2024-11-12 20:45:13,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 551 events. 268/551 cut-off events. For 124/142 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2924 event pairs, 219 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 1131. Up to 425 conditions per place. [2024-11-12 20:45:13,486 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 35 selfloop transitions, 2 changer transitions 14/62 dead transitions. [2024-11-12 20:45:13,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 325 flow [2024-11-12 20:45:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:45:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:45:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-12 20:45:13,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-11-12 20:45:13,488 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 188 flow. Second operand 5 states and 113 transitions. [2024-11-12 20:45:13,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 325 flow [2024-11-12 20:45:13,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:13,490 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 170 flow [2024-11-12 20:45:13,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-11-12 20:45:13,491 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-12 20:45:13,491 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 170 flow [2024-11-12 20:45:13,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:13,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:13,492 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:13,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:45:13,492 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:13,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 646558774, now seen corresponding path program 1 times [2024-11-12 20:45:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785924154] [2024-11-12 20:45:13,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785924154] [2024-11-12 20:45:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785924154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896534063] [2024-11-12 20:45:13,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:13,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:13,820 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) [2024-11-12 20:45:13,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:45:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:13,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 20:45:13,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:13,957 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 [2024-11-12 20:45:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:14,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:14,076 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 [2024-11-12 20:45:14,082 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 [2024-11-12 20:45:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896534063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:14,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-12 20:45:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125434712] [2024-11-12 20:45:14,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:14,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:14,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:14,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 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) [2024-11-12 20:45:14,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:14,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:14,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:14,407 INFO L124 PetriNetUnfolderBase]: 369/831 cut-off events. [2024-11-12 20:45:14,408 INFO L125 PetriNetUnfolderBase]: For 107/140 co-relation queries the response was YES. [2024-11-12 20:45:14,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 831 events. 369/831 cut-off events. For 107/140 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5232 event pairs, 86 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 1632. Up to 220 conditions per place. [2024-11-12 20:45:14,414 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 49 selfloop transitions, 15 changer transitions 0/76 dead transitions. [2024-11-12 20:45:14,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 368 flow [2024-11-12 20:45:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:45:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:45:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-11-12 20:45:14,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-12 20:45:14,416 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 170 flow. Second operand 8 states and 176 transitions. [2024-11-12 20:45:14,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 368 flow [2024-11-12 20:45:14,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 342 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-12 20:45:14,419 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 223 flow [2024-11-12 20:45:14,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-12 20:45:14,420 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-12 20:45:14,420 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 223 flow [2024-11-12 20:45:14,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 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) [2024-11-12 20:45:14,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:14,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:14,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:45:14,625 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 [2024-11-12 20:45:14,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:14,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 646558776, now seen corresponding path program 1 times [2024-11-12 20:45:14,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:14,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044287905] [2024-11-12 20:45:14,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:45:14,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044287905] [2024-11-12 20:45:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044287905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:14,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:45:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405082508] [2024-11-12 20:45:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:14,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:45:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:45:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:45:14,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:14,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-12 20:45:14,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:14,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:14,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:14,888 INFO L124 PetriNetUnfolderBase]: 413/920 cut-off events. [2024-11-12 20:45:14,888 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-11-12 20:45:14,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 920 events. 413/920 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5778 event pairs, 119 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 2074. Up to 579 conditions per place. [2024-11-12 20:45:14,894 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 52 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-11-12 20:45:14,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 374 flow [2024-11-12 20:45:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:45:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:45:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-12 20:45:14,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-11-12 20:45:14,896 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 223 flow. Second operand 3 states and 87 transitions. [2024-11-12 20:45:14,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 374 flow [2024-11-12 20:45:14,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 364 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:14,899 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 240 flow [2024-11-12 20:45:14,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-11-12 20:45:14,900 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-12 20:45:14,900 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 240 flow [2024-11-12 20:45:14,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-12 20:45:14,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:14,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:14,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:45:14,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:14,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 646558773, now seen corresponding path program 1 times [2024-11-12 20:45:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88223341] [2024-11-12 20:45:14,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:15,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:15,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88223341] [2024-11-12 20:45:15,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88223341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:15,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640539810] [2024-11-12 20:45:15,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:15,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:15,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:15,067 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) [2024-11-12 20:45:15,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:45:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:15,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:15,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:15,158 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 15 treesize of output 1 [2024-11-12 20:45:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:15,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:15,254 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 [2024-11-12 20:45:15,258 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 [2024-11-12 20:45:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640539810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:15,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:45:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793890014] [2024-11-12 20:45:15,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:15,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:45:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:45:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:45:15,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:15,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 240 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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) [2024-11-12 20:45:15,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:15,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:15,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:15,600 INFO L124 PetriNetUnfolderBase]: 375/824 cut-off events. [2024-11-12 20:45:15,600 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2024-11-12 20:45:15,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 824 events. 375/824 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5123 event pairs, 99 based on Foata normal form. 26/647 useless extension candidates. Maximal degree in co-relation 2041. Up to 262 conditions per place. [2024-11-12 20:45:15,605 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 51 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-11-12 20:45:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 433 flow [2024-11-12 20:45:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:45:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:45:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-11-12 20:45:15,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-11-12 20:45:15,607 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 240 flow. Second operand 8 states and 175 transitions. [2024-11-12 20:45:15,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 433 flow [2024-11-12 20:45:15,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:15,611 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 263 flow [2024-11-12 20:45:15,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-11-12 20:45:15,613 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-12 20:45:15,613 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 263 flow [2024-11-12 20:45:15,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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) [2024-11-12 20:45:15,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:15,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:15,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:45:15,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:15,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:15,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1427253541, now seen corresponding path program 1 times [2024-11-12 20:45:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582240452] [2024-11-12 20:45:15,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582240452] [2024-11-12 20:45:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582240452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:15,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:15,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853239617] [2024-11-12 20:45:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:15,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:15,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-12 20:45:15,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:15,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:16,167 INFO L124 PetriNetUnfolderBase]: 479/920 cut-off events. [2024-11-12 20:45:16,168 INFO L125 PetriNetUnfolderBase]: For 729/729 co-relation queries the response was YES. [2024-11-12 20:45:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 920 events. 479/920 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5163 event pairs, 186 based on Foata normal form. 36/772 useless extension candidates. Maximal degree in co-relation 2490. Up to 582 conditions per place. [2024-11-12 20:45:16,175 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 66 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-11-12 20:45:16,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 469 flow [2024-11-12 20:45:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-12 20:45:16,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-12 20:45:16,177 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 263 flow. Second operand 4 states and 106 transitions. [2024-11-12 20:45:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 469 flow [2024-11-12 20:45:16,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:16,181 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 271 flow [2024-11-12 20:45:16,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-12 20:45:16,182 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-12 20:45:16,182 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 271 flow [2024-11-12 20:45:16,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-12 20:45:16,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:16,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:16,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:45:16,185 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:16,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1437376521, now seen corresponding path program 1 times [2024-11-12 20:45:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:16,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636808147] [2024-11-12 20:45:16,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:16,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636808147] [2024-11-12 20:45:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636808147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342429544] [2024-11-12 20:45:16,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:16,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:16,421 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) [2024-11-12 20:45:16,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:45:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:16,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:45:16,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:16,519 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 [2024-11-12 20:45:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:16,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:16,634 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 [2024-11-12 20:45:16,638 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 [2024-11-12 20:45:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:16,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342429544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:16,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:16,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:45:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756972797] [2024-11-12 20:45:16,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:16,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:45:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:45:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:45:16,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:16,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-12 20:45:16,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:16,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:16,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:16,978 INFO L124 PetriNetUnfolderBase]: 521/1113 cut-off events. [2024-11-12 20:45:16,978 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-11-12 20:45:16,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 1113 events. 521/1113 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6899 event pairs, 127 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 3069. Up to 335 conditions per place. [2024-11-12 20:45:16,986 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-11-12 20:45:16,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 647 flow [2024-11-12 20:45:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:45:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:45:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-11-12 20:45:16,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-11-12 20:45:16,988 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 271 flow. Second operand 8 states and 174 transitions. [2024-11-12 20:45:16,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 647 flow [2024-11-12 20:45:16,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:16,991 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 340 flow [2024-11-12 20:45:16,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-12 20:45:16,993 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-12 20:45:16,993 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 340 flow [2024-11-12 20:45:16,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 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) [2024-11-12 20:45:16,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:16,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:17,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:17,197 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 [2024-11-12 20:45:17,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:17,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1437376520, now seen corresponding path program 1 times [2024-11-12 20:45:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654634601] [2024-11-12 20:45:17,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654634601] [2024-11-12 20:45:17,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654634601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192708931] [2024-11-12 20:45:17,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:17,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:17,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:17,378 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) [2024-11-12 20:45:17,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:45:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:17,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 20:45:17,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:17,482 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 [2024-11-12 20:45:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:17,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:17,583 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 [2024-11-12 20:45:17,589 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 [2024-11-12 20:45:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192708931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:17,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:17,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-12 20:45:17,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206870477] [2024-11-12 20:45:17,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:17,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:45:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:45:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:45:17,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:17,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 340 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 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) [2024-11-12 20:45:17,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:17,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:17,957 INFO L124 PetriNetUnfolderBase]: 486/1054 cut-off events. [2024-11-12 20:45:17,957 INFO L125 PetriNetUnfolderBase]: For 1259/1259 co-relation queries the response was YES. [2024-11-12 20:45:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 1054 events. 486/1054 cut-off events. For 1259/1259 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6536 event pairs, 127 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 3291. Up to 335 conditions per place. [2024-11-12 20:45:17,966 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 64 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-11-12 20:45:17,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 680 flow [2024-11-12 20:45:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:45:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:45:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-11-12 20:45:17,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-11-12 20:45:17,968 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 340 flow. Second operand 8 states and 173 transitions. [2024-11-12 20:45:17,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 680 flow [2024-11-12 20:45:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:45:17,973 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 356 flow [2024-11-12 20:45:17,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-11-12 20:45:17,973 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-11-12 20:45:17,973 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 356 flow [2024-11-12 20:45:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 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) [2024-11-12 20:45:17,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:17,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:17,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:45:18,178 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 [2024-11-12 20:45:18,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:18,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1660656637, now seen corresponding path program 1 times [2024-11-12 20:45:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026999681] [2024-11-12 20:45:18,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026999681] [2024-11-12 20:45:18,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026999681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:18,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:18,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:45:18,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828450127] [2024-11-12 20:45:18,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:18,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:45:18,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:18,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:45:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:45:18,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:18,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-12 20:45:18,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:18,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:18,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:18,463 INFO L124 PetriNetUnfolderBase]: 642/1176 cut-off events. [2024-11-12 20:45:18,463 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2024-11-12 20:45:18,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 1176 events. 642/1176 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6568 event pairs, 330 based on Foata normal form. 50/1018 useless extension candidates. Maximal degree in co-relation 4127. Up to 795 conditions per place. [2024-11-12 20:45:18,474 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 79 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-11-12 20:45:18,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 710 flow [2024-11-12 20:45:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:45:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:45:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-12 20:45:18,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-11-12 20:45:18,475 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 356 flow. Second operand 4 states and 104 transitions. [2024-11-12 20:45:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 710 flow [2024-11-12 20:45:18,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 697 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:45:18,480 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 364 flow [2024-11-12 20:45:18,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=364, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-11-12 20:45:18,482 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-11-12 20:45:18,483 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 364 flow [2024-11-12 20:45:18,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-12 20:45:18,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:18,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:18,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:45:18,484 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:18,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash 846914317, now seen corresponding path program 1 times [2024-11-12 20:45:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:18,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164380116] [2024-11-12 20:45:18,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164380116] [2024-11-12 20:45:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164380116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:18,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:18,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:45:18,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768235974] [2024-11-12 20:45:18,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:18,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:45:18,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:45:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:45:18,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:18,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-12 20:45:18,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:18,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:18,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:18,692 INFO L124 PetriNetUnfolderBase]: 367/769 cut-off events. [2024-11-12 20:45:18,693 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2024-11-12 20:45:18,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 769 events. 367/769 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4179 event pairs, 274 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 2761. Up to 611 conditions per place. [2024-11-12 20:45:18,699 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 43 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-12 20:45:18,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 424 flow [2024-11-12 20:45:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:45:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:45:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-12 20:45:18,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-12 20:45:18,701 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 364 flow. Second operand 3 states and 70 transitions. [2024-11-12 20:45:18,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 424 flow [2024-11-12 20:45:18,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:45:18,705 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 332 flow [2024-11-12 20:45:18,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-11-12 20:45:18,706 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-12 20:45:18,706 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 332 flow [2024-11-12 20:45:18,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-12 20:45:18,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:18,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:18,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:45:18,707 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:18,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash 846914318, now seen corresponding path program 1 times [2024-11-12 20:45:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229809417] [2024-11-12 20:45:18,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:45:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229809417] [2024-11-12 20:45:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229809417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:45:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:45:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692451011] [2024-11-12 20:45:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:18,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:45:18,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:45:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:45:18,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-12 20:45:18,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-12 20:45:18,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:18,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-12 20:45:18,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:18,886 INFO L124 PetriNetUnfolderBase]: 266/586 cut-off events. [2024-11-12 20:45:18,886 INFO L125 PetriNetUnfolderBase]: For 1210/1210 co-relation queries the response was YES. [2024-11-12 20:45:18,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 586 events. 266/586 cut-off events. For 1210/1210 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2915 event pairs, 187 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1995. Up to 444 conditions per place. [2024-11-12 20:45:18,892 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-12 20:45:18,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 384 flow [2024-11-12 20:45:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:45:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:45:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-12 20:45:18,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-11-12 20:45:18,893 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 332 flow. Second operand 3 states and 68 transitions. [2024-11-12 20:45:18,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 384 flow [2024-11-12 20:45:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:18,896 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 305 flow [2024-11-12 20:45:18,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-12 20:45:18,897 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-12 20:45:18,897 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 305 flow [2024-11-12 20:45:18,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-12 20:45:18,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:18,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:18,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:45:18,898 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:18,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash 866604724, now seen corresponding path program 1 times [2024-11-12 20:45:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:18,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415243246] [2024-11-12 20:45:18,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415243246] [2024-11-12 20:45:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415243246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314038147] [2024-11-12 20:45:19,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:19,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:19,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:19,053 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) [2024-11-12 20:45:19,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:45:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:19,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:45:19,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:19,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:19,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314038147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:19,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-12 20:45:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049338731] [2024-11-12 20:45:19,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:19,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:45:19,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:45:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:45:19,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:19,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 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) [2024-11-12 20:45:19,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:19,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:19,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:19,862 INFO L124 PetriNetUnfolderBase]: 651/1301 cut-off events. [2024-11-12 20:45:19,862 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2024-11-12 20:45:19,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 1301 events. 651/1301 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7222 event pairs, 385 based on Foata normal form. 18/1311 useless extension candidates. Maximal degree in co-relation 4408. Up to 716 conditions per place. [2024-11-12 20:45:19,874 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 16 changer transitions 8/114 dead transitions. [2024-11-12 20:45:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 855 flow [2024-11-12 20:45:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-11-12 20:45:19,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3630434782608696 [2024-11-12 20:45:19,876 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 305 flow. Second operand 10 states and 167 transitions. [2024-11-12 20:45:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 855 flow [2024-11-12 20:45:19,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:45:19,880 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 393 flow [2024-11-12 20:45:19,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-11-12 20:45:19,881 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-12 20:45:19,881 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 393 flow [2024-11-12 20:45:19,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 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) [2024-11-12 20:45:19,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:19,882 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:45:19,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:20,086 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 [2024-11-12 20:45:20,087 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:20,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2138803127, now seen corresponding path program 2 times [2024-11-12 20:45:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756996528] [2024-11-12 20:45:20,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756996528] [2024-11-12 20:45:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756996528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719123622] [2024-11-12 20:45:20,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:20,238 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) [2024-11-12 20:45:20,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:45:20,319 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:20,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:20,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:45:20,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:45:20,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:45:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719123622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:20,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:20,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:45:20,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315650522] [2024-11-12 20:45:20,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:20,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:45:20,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:45:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:45:20,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-12 20:45:20,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 393 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 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) [2024-11-12 20:45:20,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:20,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-12 20:45:20,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:20,685 INFO L124 PetriNetUnfolderBase]: 426/953 cut-off events. [2024-11-12 20:45:20,686 INFO L125 PetriNetUnfolderBase]: For 2818/2845 co-relation queries the response was YES. [2024-11-12 20:45:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 953 events. 426/953 cut-off events. For 2818/2845 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5378 event pairs, 302 based on Foata normal form. 17/941 useless extension candidates. Maximal degree in co-relation 3504. Up to 708 conditions per place. [2024-11-12 20:45:20,695 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 29 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-11-12 20:45:20,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 503 flow [2024-11-12 20:45:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2024-11-12 20:45:20,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34006211180124224 [2024-11-12 20:45:20,697 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 393 flow. Second operand 14 states and 219 transitions. [2024-11-12 20:45:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 503 flow [2024-11-12 20:45:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 61 transitions, 472 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-12 20:45:20,703 INFO L231 Difference]: Finished difference. Result has 89 places, 61 transitions, 414 flow [2024-11-12 20:45:20,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=414, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2024-11-12 20:45:20,703 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-11-12 20:45:20,704 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 414 flow [2024-11-12 20:45:20,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 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) [2024-11-12 20:45:20,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:20,704 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:20,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:45:20,905 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 [2024-11-12 20:45:20,905 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:20,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1105780607, now seen corresponding path program 1 times [2024-11-12 20:45:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333201565] [2024-11-12 20:45:20,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:21,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:21,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333201565] [2024-11-12 20:45:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333201565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:21,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951899705] [2024-11-12 20:45:21,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:21,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:21,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:21,029 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) [2024-11-12 20:45:21,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:45:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:21,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:45:21,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:21,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951899705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:21,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-12 20:45:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643039224] [2024-11-12 20:45:21,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:21,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:45:21,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:45:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:45:21,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:21,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 414 flow. Second operand has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 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) [2024-11-12 20:45:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:21,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:21,786 INFO L124 PetriNetUnfolderBase]: 565/1018 cut-off events. [2024-11-12 20:45:21,787 INFO L125 PetriNetUnfolderBase]: For 2927/2969 co-relation queries the response was YES. [2024-11-12 20:45:21,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 1018 events. 565/1018 cut-off events. For 2927/2969 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4979 event pairs, 356 based on Foata normal form. 24/1035 useless extension candidates. Maximal degree in co-relation 3900. Up to 708 conditions per place. [2024-11-12 20:45:21,793 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 35 selfloop transitions, 12 changer transitions 43/98 dead transitions. [2024-11-12 20:45:21,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 829 flow [2024-11-12 20:45:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-12 20:45:21,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2024-11-12 20:45:21,795 INFO L175 Difference]: Start difference. First operand has 89 places, 61 transitions, 414 flow. Second operand 10 states and 155 transitions. [2024-11-12 20:45:21,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 829 flow [2024-11-12 20:45:21,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 753 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-12 20:45:21,800 INFO L231 Difference]: Finished difference. Result has 89 places, 55 transitions, 312 flow [2024-11-12 20:45:21,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2024-11-12 20:45:21,801 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-11-12 20:45:21,801 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 312 flow [2024-11-12 20:45:21,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 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) [2024-11-12 20:45:21,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:21,802 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:21,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 20:45:22,005 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 [2024-11-12 20:45:22,006 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:22,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -97825753, now seen corresponding path program 2 times [2024-11-12 20:45:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25313855] [2024-11-12 20:45:22,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25313855] [2024-11-12 20:45:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25313855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246674589] [2024-11-12 20:45:22,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:22,302 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) [2024-11-12 20:45:22,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:45:22,391 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:22,391 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:22,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:45:22,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:22,430 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 [2024-11-12 20:45:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:22,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:22,632 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 [2024-11-12 20:45:22,635 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 [2024-11-12 20:45:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:22,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246674589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:22,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:22,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-12 20:45:22,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501801352] [2024-11-12 20:45:22,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:22,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:45:22,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:45:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:45:22,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 312 flow. Second operand has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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) [2024-11-12 20:45:22,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:22,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:22,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:23,334 INFO L124 PetriNetUnfolderBase]: 564/1097 cut-off events. [2024-11-12 20:45:23,334 INFO L125 PetriNetUnfolderBase]: For 2937/2974 co-relation queries the response was YES. [2024-11-12 20:45:23,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 1097 events. 564/1097 cut-off events. For 2937/2974 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5685 event pairs, 86 based on Foata normal form. 18/1110 useless extension candidates. Maximal degree in co-relation 4034. Up to 276 conditions per place. [2024-11-12 20:45:23,344 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 105 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2024-11-12 20:45:23,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 1060 flow [2024-11-12 20:45:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-11-12 20:45:23,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36335403726708076 [2024-11-12 20:45:23,346 INFO L175 Difference]: Start difference. First operand has 89 places, 55 transitions, 312 flow. Second operand 14 states and 234 transitions. [2024-11-12 20:45:23,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 1060 flow [2024-11-12 20:45:23,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 962 flow, removed 37 selfloop flow, removed 13 redundant places. [2024-11-12 20:45:23,352 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 350 flow [2024-11-12 20:45:23,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=350, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2024-11-12 20:45:23,352 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-12 20:45:23,353 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 350 flow [2024-11-12 20:45:23,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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) [2024-11-12 20:45:23,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:23,353 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:23,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:23,557 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 [2024-11-12 20:45:23,558 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:23,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -97825752, now seen corresponding path program 1 times [2024-11-12 20:45:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310898359] [2024-11-12 20:45:23,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:23,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310898359] [2024-11-12 20:45:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310898359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044562034] [2024-11-12 20:45:23,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:23,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:23,814 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) [2024-11-12 20:45:23,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 20:45:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:23,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-12 20:45:23,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:23,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 20:45:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:24,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:24,148 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 [2024-11-12 20:45:24,151 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 [2024-11-12 20:45:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044562034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:24,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-12 20:45:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83186167] [2024-11-12 20:45:24,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:24,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:45:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:45:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:45:24,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:24,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 350 flow. Second operand has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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) [2024-11-12 20:45:24,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:24,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:24,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:24,868 INFO L124 PetriNetUnfolderBase]: 536/1050 cut-off events. [2024-11-12 20:45:24,868 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2024-11-12 20:45:24,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 1050 events. 536/1050 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5341 event pairs, 75 based on Foata normal form. 18/1063 useless extension candidates. Maximal degree in co-relation 3859. Up to 262 conditions per place. [2024-11-12 20:45:24,876 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 104 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-11-12 20:45:24,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 1014 flow [2024-11-12 20:45:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2024-11-12 20:45:24,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2024-11-12 20:45:24,878 INFO L175 Difference]: Start difference. First operand has 83 places, 59 transitions, 350 flow. Second operand 14 states and 233 transitions. [2024-11-12 20:45:24,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 1014 flow [2024-11-12 20:45:24,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 977 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-12 20:45:24,884 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 345 flow [2024-11-12 20:45:24,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=345, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2024-11-12 20:45:24,884 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-11-12 20:45:24,885 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 345 flow [2024-11-12 20:45:24,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 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) [2024-11-12 20:45:24,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:24,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:24,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 20:45:25,089 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 [2024-11-12 20:45:25,090 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:25,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash -210533068, now seen corresponding path program 2 times [2024-11-12 20:45:25,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:25,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776945392] [2024-11-12 20:45:25,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:25,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776945392] [2024-11-12 20:45:25,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776945392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:25,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197124024] [2024-11-12 20:45:25,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:25,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:25,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:25,403 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) [2024-11-12 20:45:25,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:45:25,499 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:25,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:25,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:45:25,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:25,538 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 [2024-11-12 20:45:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:25,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:25,739 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 [2024-11-12 20:45:25,742 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 [2024-11-12 20:45:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197124024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-12 20:45:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976897426] [2024-11-12 20:45:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:25,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:45:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:45:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:45:25,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:25,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 345 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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) [2024-11-12 20:45:25,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:25,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:25,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:26,440 INFO L124 PetriNetUnfolderBase]: 711/1284 cut-off events. [2024-11-12 20:45:26,440 INFO L125 PetriNetUnfolderBase]: For 5150/5150 co-relation queries the response was YES. [2024-11-12 20:45:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 1284 events. 711/1284 cut-off events. For 5150/5150 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6409 event pairs, 121 based on Foata normal form. 21/1294 useless extension candidates. Maximal degree in co-relation 5152. Up to 336 conditions per place. [2024-11-12 20:45:26,453 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 120 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2024-11-12 20:45:26,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 1376 flow [2024-11-12 20:45:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 228 transitions. [2024-11-12 20:45:26,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35403726708074534 [2024-11-12 20:45:26,455 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 345 flow. Second operand 14 states and 228 transitions. [2024-11-12 20:45:26,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 1376 flow [2024-11-12 20:45:26,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 1288 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-12 20:45:26,463 INFO L231 Difference]: Finished difference. Result has 91 places, 62 transitions, 404 flow [2024-11-12 20:45:26,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=404, PETRI_PLACES=91, PETRI_TRANSITIONS=62} [2024-11-12 20:45:26,464 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-12 20:45:26,464 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 62 transitions, 404 flow [2024-11-12 20:45:26,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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) [2024-11-12 20:45:26,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:26,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:26,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:26,665 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 [2024-11-12 20:45:26,665 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:26,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 478755405, now seen corresponding path program 1 times [2024-11-12 20:45:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816331095] [2024-11-12 20:45:26,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816331095] [2024-11-12 20:45:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816331095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357441467] [2024-11-12 20:45:26,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:26,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:26,740 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) [2024-11-12 20:45:26,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 20:45:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:26,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:26,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:26,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:45:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357441467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:45:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:45:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289297742] [2024-11-12 20:45:26,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:26,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:26,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 62 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-12 20:45:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:27,114 INFO L124 PetriNetUnfolderBase]: 661/1290 cut-off events. [2024-11-12 20:45:27,114 INFO L125 PetriNetUnfolderBase]: For 5396/5396 co-relation queries the response was YES. [2024-11-12 20:45:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1290 events. 661/1290 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6800 event pairs, 65 based on Foata normal form. 48/1335 useless extension candidates. Maximal degree in co-relation 5248. Up to 402 conditions per place. [2024-11-12 20:45:27,125 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 108 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2024-11-12 20:45:27,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 126 transitions, 1160 flow [2024-11-12 20:45:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-12 20:45:27,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-11-12 20:45:27,127 INFO L175 Difference]: Start difference. First operand has 91 places, 62 transitions, 404 flow. Second operand 6 states and 136 transitions. [2024-11-12 20:45:27,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 126 transitions, 1160 flow [2024-11-12 20:45:27,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 1060 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-12 20:45:27,134 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 382 flow [2024-11-12 20:45:27,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2024-11-12 20:45:27,135 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-12 20:45:27,135 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 382 flow [2024-11-12 20:45:27,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-12 20:45:27,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:27,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:27,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 20:45:27,339 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 [2024-11-12 20:45:27,340 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:27,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -210533067, now seen corresponding path program 1 times [2024-11-12 20:45:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205428944] [2024-11-12 20:45:27,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205428944] [2024-11-12 20:45:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205428944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68016841] [2024-11-12 20:45:27,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:27,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:27,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:27,603 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) [2024-11-12 20:45:27,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 20:45:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:27,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-12 20:45:27,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:27,733 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 [2024-11-12 20:45:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:27,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:27,920 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 [2024-11-12 20:45:27,923 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 [2024-11-12 20:45:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68016841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:27,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-12 20:45:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104019004] [2024-11-12 20:45:27,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:27,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:45:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:45:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:45:28,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:28,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 382 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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) [2024-11-12 20:45:28,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:28,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:28,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:28,670 INFO L124 PetriNetUnfolderBase]: 676/1237 cut-off events. [2024-11-12 20:45:28,670 INFO L125 PetriNetUnfolderBase]: For 5707/5707 co-relation queries the response was YES. [2024-11-12 20:45:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1237 events. 676/1237 cut-off events. For 5707/5707 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6131 event pairs, 121 based on Foata normal form. 21/1247 useless extension candidates. Maximal degree in co-relation 5250. Up to 332 conditions per place. [2024-11-12 20:45:28,681 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 119 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-11-12 20:45:28,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 147 transitions, 1404 flow [2024-11-12 20:45:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2024-11-12 20:45:28,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35248447204968947 [2024-11-12 20:45:28,683 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 382 flow. Second operand 14 states and 227 transitions. [2024-11-12 20:45:28,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 147 transitions, 1404 flow [2024-11-12 20:45:28,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1266 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-12 20:45:28,693 INFO L231 Difference]: Finished difference. Result has 93 places, 60 transitions, 392 flow [2024-11-12 20:45:28,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=392, PETRI_PLACES=93, PETRI_TRANSITIONS=60} [2024-11-12 20:45:28,694 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-12 20:45:28,694 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 60 transitions, 392 flow [2024-11-12 20:45:28,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 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) [2024-11-12 20:45:28,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:28,694 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:28,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:28,898 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 [2024-11-12 20:45:28,899 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:28,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1956516286, now seen corresponding path program 1 times [2024-11-12 20:45:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:28,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521857579] [2024-11-12 20:45:28,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:28,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:28,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521857579] [2024-11-12 20:45:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521857579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848346533] [2024-11-12 20:45:28,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:28,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:28,980 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) [2024-11-12 20:45:28,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 20:45:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:29,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:29,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:29,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:29,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848346533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:29,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949899958] [2024-11-12 20:45:29,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:45:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:45:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:45:29,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:29,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 60 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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) [2024-11-12 20:45:29,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:29,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:29,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:29,599 INFO L124 PetriNetUnfolderBase]: 979/1920 cut-off events. [2024-11-12 20:45:29,599 INFO L125 PetriNetUnfolderBase]: For 8449/8449 co-relation queries the response was YES. [2024-11-12 20:45:29,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1920 events. 979/1920 cut-off events. For 8449/8449 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10452 event pairs, 216 based on Foata normal form. 66/1976 useless extension candidates. Maximal degree in co-relation 7719. Up to 613 conditions per place. [2024-11-12 20:45:29,619 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 172 selfloop transitions, 13 changer transitions 0/194 dead transitions. [2024-11-12 20:45:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 194 transitions, 1870 flow [2024-11-12 20:45:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-11-12 20:45:29,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-11-12 20:45:29,621 INFO L175 Difference]: Start difference. First operand has 93 places, 60 transitions, 392 flow. Second operand 10 states and 238 transitions. [2024-11-12 20:45:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 194 transitions, 1870 flow [2024-11-12 20:45:29,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 194 transitions, 1760 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-12 20:45:29,632 INFO L231 Difference]: Finished difference. Result has 94 places, 67 transitions, 454 flow [2024-11-12 20:45:29,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=454, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2024-11-12 20:45:29,633 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-11-12 20:45:29,633 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 454 flow [2024-11-12 20:45:29,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 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) [2024-11-12 20:45:29,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:29,634 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:29,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-12 20:45:29,834 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 [2024-11-12 20:45:29,834 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:29,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash -458791430, now seen corresponding path program 1 times [2024-11-12 20:45:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:29,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569971873] [2024-11-12 20:45:29,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:29,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569971873] [2024-11-12 20:45:29,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569971873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871554207] [2024-11-12 20:45:29,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:29,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:29,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:29,901 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) [2024-11-12 20:45:29,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 20:45:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:30,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:30,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:30,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:45:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871554207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:45:30,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:45:30,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:45:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080652523] [2024-11-12 20:45:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:45:30,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:45:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:45:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:45:30,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:30,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-12 20:45:30,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:30,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:30,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:30,356 INFO L124 PetriNetUnfolderBase]: 1078/1944 cut-off events. [2024-11-12 20:45:30,356 INFO L125 PetriNetUnfolderBase]: For 9268/9297 co-relation queries the response was YES. [2024-11-12 20:45:30,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8282 conditions, 1944 events. 1078/1944 cut-off events. For 9268/9297 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10451 event pairs, 115 based on Foata normal form. 74/1997 useless extension candidates. Maximal degree in co-relation 8261. Up to 637 conditions per place. [2024-11-12 20:45:30,374 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 119 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2024-11-12 20:45:30,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1364 flow [2024-11-12 20:45:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:45:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:45:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-12 20:45:30,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-12 20:45:30,375 INFO L175 Difference]: Start difference. First operand has 94 places, 67 transitions, 454 flow. Second operand 6 states and 132 transitions. [2024-11-12 20:45:30,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1364 flow [2024-11-12 20:45:30,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1332 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:45:30,392 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 460 flow [2024-11-12 20:45:30,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=6, PETRI_FLOW=460, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2024-11-12 20:45:30,393 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-11-12 20:45:30,393 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 460 flow [2024-11-12 20:45:30,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-12 20:45:30,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:30,393 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:45:30,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:30,594 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 [2024-11-12 20:45:30,594 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:30,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash -983505405, now seen corresponding path program 2 times [2024-11-12 20:45:30,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:30,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124386273] [2024-11-12 20:45:30,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:30,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124386273] [2024-11-12 20:45:30,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124386273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623132046] [2024-11-12 20:45:30,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:30,773 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) [2024-11-12 20:45:30,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 20:45:30,880 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:30,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:30,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 20:45:30,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:31,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:31,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623132046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:31,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:31,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-12 20:45:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300970308] [2024-11-12 20:45:31,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:31,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-12 20:45:31,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:31,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-12 20:45:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-12 20:45:31,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:31,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 460 flow. Second operand has 30 states, 30 states have (on average 10.5) internal successors, (315), 30 states have internal predecessors, (315), 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) [2024-11-12 20:45:31,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:31,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:32,131 INFO L124 PetriNetUnfolderBase]: 1601/2883 cut-off events. [2024-11-12 20:45:32,131 INFO L125 PetriNetUnfolderBase]: For 13838/13838 co-relation queries the response was YES. [2024-11-12 20:45:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 2883 events. 1601/2883 cut-off events. For 13838/13838 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15903 event pairs, 922 based on Foata normal form. 22/2887 useless extension candidates. Maximal degree in co-relation 12868. Up to 1829 conditions per place. [2024-11-12 20:45:32,155 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 127 selfloop transitions, 21 changer transitions 18/173 dead transitions. [2024-11-12 20:45:32,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 173 transitions, 1685 flow [2024-11-12 20:45:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-11-12 20:45:32,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35093167701863354 [2024-11-12 20:45:32,157 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 460 flow. Second operand 14 states and 226 transitions. [2024-11-12 20:45:32,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 173 transitions, 1685 flow [2024-11-12 20:45:32,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 173 transitions, 1547 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-12 20:45:32,174 INFO L231 Difference]: Finished difference. Result has 108 places, 74 transitions, 586 flow [2024-11-12 20:45:32,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2024-11-12 20:45:32,175 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-12 20:45:32,175 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 586 flow [2024-11-12 20:45:32,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.5) internal successors, (315), 30 states have internal predecessors, (315), 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) [2024-11-12 20:45:32,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:32,176 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:32,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 20:45:32,376 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 [2024-11-12 20:45:32,376 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:32,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1337631808, now seen corresponding path program 1 times [2024-11-12 20:45:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:32,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616249748] [2024-11-12 20:45:32,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:32,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616249748] [2024-11-12 20:45:32,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616249748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009234180] [2024-11-12 20:45:32,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:32,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:32,441 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) [2024-11-12 20:45:32,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 20:45:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:32,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:45:32,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:32,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:45:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009234180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:32,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:32,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:45:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481936867] [2024-11-12 20:45:32,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:32,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:45:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:45:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:45:32,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 20:45:32,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 586 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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) [2024-11-12 20:45:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 20:45:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:33,309 INFO L124 PetriNetUnfolderBase]: 2381/4367 cut-off events. [2024-11-12 20:45:33,310 INFO L125 PetriNetUnfolderBase]: For 24150/24326 co-relation queries the response was YES. [2024-11-12 20:45:33,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18930 conditions, 4367 events. 2381/4367 cut-off events. For 24150/24326 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26577 event pairs, 578 based on Foata normal form. 246/4601 useless extension candidates. Maximal degree in co-relation 18902. Up to 1484 conditions per place. [2024-11-12 20:45:33,342 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 254 selfloop transitions, 13 changer transitions 0/280 dead transitions. [2024-11-12 20:45:33,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 280 transitions, 3254 flow [2024-11-12 20:45:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:45:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:45:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-11-12 20:45:33,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 20:45:33,344 INFO L175 Difference]: Start difference. First operand has 108 places, 74 transitions, 586 flow. Second operand 10 states and 230 transitions. [2024-11-12 20:45:33,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 280 transitions, 3254 flow [2024-11-12 20:45:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 280 transitions, 3193 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-12 20:45:33,361 INFO L231 Difference]: Finished difference. Result has 113 places, 81 transitions, 647 flow [2024-11-12 20:45:33,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=647, PETRI_PLACES=113, PETRI_TRANSITIONS=81} [2024-11-12 20:45:33,362 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-12 20:45:33,362 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 81 transitions, 647 flow [2024-11-12 20:45:33,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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) [2024-11-12 20:45:33,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:33,362 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:33,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 20:45:33,566 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 [2024-11-12 20:45:33,566 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:33,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1268926107, now seen corresponding path program 2 times [2024-11-12 20:45:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339123541] [2024-11-12 20:45:33,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:33,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:33,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339123541] [2024-11-12 20:45:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339123541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596766699] [2024-11-12 20:45:33,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:45:33,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:33,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:33,757 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) [2024-11-12 20:45:33,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 20:45:33,862 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:45:33,862 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:33,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 20:45:33,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:34,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596766699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:34,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-12 20:45:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038514466] [2024-11-12 20:45:34,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:34,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-12 20:45:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-12 20:45:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-12 20:45:34,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:34,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 81 transitions, 647 flow. Second operand has 30 states, 30 states have (on average 10.566666666666666) internal successors, (317), 30 states have internal predecessors, (317), 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) [2024-11-12 20:45:34,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:34,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:34,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:35,316 INFO L124 PetriNetUnfolderBase]: 2343/3930 cut-off events. [2024-11-12 20:45:35,317 INFO L125 PetriNetUnfolderBase]: For 21674/21828 co-relation queries the response was YES. [2024-11-12 20:45:35,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18246 conditions, 3930 events. 2343/3930 cut-off events. For 21674/21828 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21871 event pairs, 1553 based on Foata normal form. 53/3967 useless extension candidates. Maximal degree in co-relation 18216. Up to 3167 conditions per place. [2024-11-12 20:45:35,341 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 50 selfloop transitions, 12 changer transitions 81/153 dead transitions. [2024-11-12 20:45:35,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 153 transitions, 1562 flow [2024-11-12 20:45:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:45:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:45:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-11-12 20:45:35,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3245341614906832 [2024-11-12 20:45:35,343 INFO L175 Difference]: Start difference. First operand has 113 places, 81 transitions, 647 flow. Second operand 14 states and 209 transitions. [2024-11-12 20:45:35,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 153 transitions, 1562 flow [2024-11-12 20:45:35,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 153 transitions, 1546 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:45:35,365 INFO L231 Difference]: Finished difference. Result has 129 places, 72 transitions, 566 flow [2024-11-12 20:45:35,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=566, PETRI_PLACES=129, PETRI_TRANSITIONS=72} [2024-11-12 20:45:35,366 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-11-12 20:45:35,366 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 72 transitions, 566 flow [2024-11-12 20:45:35,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.566666666666666) internal successors, (317), 30 states have internal predecessors, (317), 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) [2024-11-12 20:45:35,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:35,366 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:45:35,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-12 20:45:35,570 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 [2024-11-12 20:45:35,570 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:35,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1910356086, now seen corresponding path program 3 times [2024-11-12 20:45:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508208152] [2024-11-12 20:45:35,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508208152] [2024-11-12 20:45:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508208152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613562688] [2024-11-12 20:45:35,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:45:35,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:35,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:35,942 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) [2024-11-12 20:45:35,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 20:45:36,037 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 20:45:36,037 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:36,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 20:45:36,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:36,072 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 [2024-11-12 20:45:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:36,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:36,316 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 [2024-11-12 20:45:36,318 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 [2024-11-12 20:45:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613562688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:36,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:36,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 20:45:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361342940] [2024-11-12 20:45:36,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:36,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 20:45:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 20:45:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-12 20:45:36,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:36,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 72 transitions, 566 flow. Second operand has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:36,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:36,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:36,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:37,486 INFO L124 PetriNetUnfolderBase]: 1660/3094 cut-off events. [2024-11-12 20:45:37,486 INFO L125 PetriNetUnfolderBase]: For 18092/18135 co-relation queries the response was YES. [2024-11-12 20:45:37,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 3094 events. 1660/3094 cut-off events. For 18092/18135 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17368 event pairs, 247 based on Foata normal form. 38/3121 useless extension candidates. Maximal degree in co-relation 14115. Up to 828 conditions per place. [2024-11-12 20:45:37,550 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 208 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-11-12 20:45:37,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 245 transitions, 2633 flow [2024-11-12 20:45:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 20:45:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 20:45:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 314 transitions. [2024-11-12 20:45:37,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35926773455377575 [2024-11-12 20:45:37,552 INFO L175 Difference]: Start difference. First operand has 129 places, 72 transitions, 566 flow. Second operand 19 states and 314 transitions. [2024-11-12 20:45:37,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 245 transitions, 2633 flow [2024-11-12 20:45:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 245 transitions, 2463 flow, removed 73 selfloop flow, removed 19 redundant places. [2024-11-12 20:45:37,575 INFO L231 Difference]: Finished difference. Result has 118 places, 74 transitions, 592 flow [2024-11-12 20:45:37,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=592, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2024-11-12 20:45:37,575 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-11-12 20:45:37,576 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 592 flow [2024-11-12 20:45:37,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:45:37,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:37,576 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:45:37,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-12 20:45:37,777 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 [2024-11-12 20:45:37,777 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:37,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1910356085, now seen corresponding path program 3 times [2024-11-12 20:45:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551626303] [2024-11-12 20:45:37,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551626303] [2024-11-12 20:45:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551626303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288815306] [2024-11-12 20:45:38,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:45:38,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:38,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:38,133 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) [2024-11-12 20:45:38,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 20:45:38,229 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 20:45:38,229 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:38,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-12 20:45:38,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:38,320 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 [2024-11-12 20:45:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:38,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:39,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-12 20:45:39,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-12 20:45:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:39,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288815306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:39,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:39,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 40 [2024-11-12 20:45:39,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436582745] [2024-11-12 20:45:39,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:39,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 20:45:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 20:45:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 20:45:40,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:40,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 592 flow. Second operand has 42 states, 42 states have (on average 10.428571428571429) internal successors, (438), 42 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) [2024-11-12 20:45:40,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:40,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:44,478 INFO L124 PetriNetUnfolderBase]: 5516/9520 cut-off events. [2024-11-12 20:45:44,478 INFO L125 PetriNetUnfolderBase]: For 55636/55748 co-relation queries the response was YES. [2024-11-12 20:45:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44298 conditions, 9520 events. 5516/9520 cut-off events. For 55636/55748 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 63721 event pairs, 490 based on Foata normal form. 266/9743 useless extension candidates. Maximal degree in co-relation 44270. Up to 1414 conditions per place. [2024-11-12 20:45:44,543 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 657 selfloop transitions, 73 changer transitions 5/745 dead transitions. [2024-11-12 20:45:44,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 745 transitions, 7838 flow [2024-11-12 20:45:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 20:45:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-12 20:45:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 795 transitions. [2024-11-12 20:45:44,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38405797101449274 [2024-11-12 20:45:44,547 INFO L175 Difference]: Start difference. First operand has 118 places, 74 transitions, 592 flow. Second operand 45 states and 795 transitions. [2024-11-12 20:45:44,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 745 transitions, 7838 flow [2024-11-12 20:45:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 745 transitions, 7640 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-11-12 20:45:44,616 INFO L231 Difference]: Finished difference. Result has 150 places, 117 transitions, 1043 flow [2024-11-12 20:45:44,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1043, PETRI_PLACES=150, PETRI_TRANSITIONS=117} [2024-11-12 20:45:44,617 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-11-12 20:45:44,617 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 117 transitions, 1043 flow [2024-11-12 20:45:44,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.428571428571429) internal successors, (438), 42 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) [2024-11-12 20:45:44,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:44,617 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:44,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-12 20:45:44,821 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 [2024-11-12 20:45:44,821 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:44,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 888126232, now seen corresponding path program 3 times [2024-11-12 20:45:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193664953] [2024-11-12 20:45:44,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:44,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:45,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193664953] [2024-11-12 20:45:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193664953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246314106] [2024-11-12 20:45:45,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:45:45,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:45,180 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) [2024-11-12 20:45:45,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-12 20:45:45,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 20:45:45,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:45,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-12 20:45:45,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:45,368 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 [2024-11-12 20:45:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:45,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:46,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-12 20:45:46,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-12 20:45:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:46,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246314106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:46,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:46,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 40 [2024-11-12 20:45:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107621260] [2024-11-12 20:45:46,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:46,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 20:45:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 20:45:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 20:45:47,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:47,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 117 transitions, 1043 flow. Second operand has 42 states, 42 states have (on average 10.571428571428571) internal successors, (444), 42 states have internal predecessors, (444), 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) [2024-11-12 20:45:47,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:47,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:47,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:50,903 INFO L124 PetriNetUnfolderBase]: 4991/8454 cut-off events. [2024-11-12 20:45:50,903 INFO L125 PetriNetUnfolderBase]: For 53360/53902 co-relation queries the response was YES. [2024-11-12 20:45:50,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40975 conditions, 8454 events. 4991/8454 cut-off events. For 53360/53902 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 55822 event pairs, 570 based on Foata normal form. 444/8862 useless extension candidates. Maximal degree in co-relation 40942. Up to 1301 conditions per place. [2024-11-12 20:45:50,974 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 655 selfloop transitions, 73 changer transitions 16/767 dead transitions. [2024-11-12 20:45:50,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 767 transitions, 8911 flow [2024-11-12 20:45:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 20:45:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-12 20:45:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 743 transitions. [2024-11-12 20:45:50,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35893719806763286 [2024-11-12 20:45:50,977 INFO L175 Difference]: Start difference. First operand has 150 places, 117 transitions, 1043 flow. Second operand 45 states and 743 transitions. [2024-11-12 20:45:50,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 767 transitions, 8911 flow [2024-11-12 20:45:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 767 transitions, 8055 flow, removed 178 selfloop flow, removed 18 redundant places. [2024-11-12 20:45:51,024 INFO L231 Difference]: Finished difference. Result has 184 places, 161 transitions, 1518 flow [2024-11-12 20:45:51,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1518, PETRI_PLACES=184, PETRI_TRANSITIONS=161} [2024-11-12 20:45:51,025 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2024-11-12 20:45:51,025 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 161 transitions, 1518 flow [2024-11-12 20:45:51,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.571428571428571) internal successors, (444), 42 states have internal predecessors, (444), 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) [2024-11-12 20:45:51,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:51,025 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:51,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-12 20:45:51,226 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 [2024-11-12 20:45:51,226 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:51,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash 888126231, now seen corresponding path program 3 times [2024-11-12 20:45:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:51,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884575958] [2024-11-12 20:45:51,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:51,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:51,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884575958] [2024-11-12 20:45:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884575958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:51,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78827344] [2024-11-12 20:45:51,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:45:51,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:51,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:51,622 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) [2024-11-12 20:45:51,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-12 20:45:51,727 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 20:45:51,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:51,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 20:45:51,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:51,761 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 [2024-11-12 20:45:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:51,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:52,003 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 [2024-11-12 20:45:52,005 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 [2024-11-12 20:45:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78827344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:52,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 20:45:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430424913] [2024-11-12 20:45:52,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 20:45:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 20:45:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-12 20:45:52,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:45:52,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 161 transitions, 1518 flow. Second operand has 29 states, 29 states have (on average 11.482758620689655) internal successors, (333), 29 states have internal predecessors, (333), 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) [2024-11-12 20:45:52,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:52,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:45:52,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:53,901 INFO L124 PetriNetUnfolderBase]: 4001/7420 cut-off events. [2024-11-12 20:45:53,901 INFO L125 PetriNetUnfolderBase]: For 55294/55703 co-relation queries the response was YES. [2024-11-12 20:45:53,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37955 conditions, 7420 events. 4001/7420 cut-off events. For 55294/55703 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 51558 event pairs, 940 based on Foata normal form. 264/7643 useless extension candidates. Maximal degree in co-relation 37915. Up to 2363 conditions per place. [2024-11-12 20:45:53,954 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 483 selfloop transitions, 55 changer transitions 0/565 dead transitions. [2024-11-12 20:45:53,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 565 transitions, 6428 flow [2024-11-12 20:45:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 20:45:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 20:45:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 304 transitions. [2024-11-12 20:45:53,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2024-11-12 20:45:53,955 INFO L175 Difference]: Start difference. First operand has 184 places, 161 transitions, 1518 flow. Second operand 19 states and 304 transitions. [2024-11-12 20:45:53,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 565 transitions, 6428 flow [2024-11-12 20:45:54,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 565 transitions, 6205 flow, removed 25 selfloop flow, removed 20 redundant places. [2024-11-12 20:45:54,015 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1457 flow [2024-11-12 20:45:54,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1457, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-11-12 20:45:54,016 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2024-11-12 20:45:54,016 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1457 flow [2024-11-12 20:45:54,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.482758620689655) internal successors, (333), 29 states have internal predecessors, (333), 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) [2024-11-12 20:45:54,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:54,017 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-12 20:45:54,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-12 20:45:54,217 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 [2024-11-12 20:45:54,217 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:54,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash 493615733, now seen corresponding path program 4 times [2024-11-12 20:45:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:54,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628583571] [2024-11-12 20:45:54,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628583571] [2024-11-12 20:45:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628583571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533082393] [2024-11-12 20:45:54,451 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:45:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:54,452 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) [2024-11-12 20:45:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-12 20:45:54,550 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 20:45:54,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:54,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 20:45:54,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:54,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533082393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:55,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-12 20:45:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497493405] [2024-11-12 20:45:55,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:55,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-12 20:45:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-12 20:45:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-11-12 20:45:55,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:55,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1457 flow. Second operand has 40 states, 40 states have (on average 10.475) internal successors, (419), 40 states have internal predecessors, (419), 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) [2024-11-12 20:45:55,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:55,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:55,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:56,598 INFO L124 PetriNetUnfolderBase]: 4231/7696 cut-off events. [2024-11-12 20:45:56,599 INFO L125 PetriNetUnfolderBase]: For 51841/52248 co-relation queries the response was YES. [2024-11-12 20:45:56,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38359 conditions, 7696 events. 4231/7696 cut-off events. For 51841/52248 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 51340 event pairs, 2642 based on Foata normal form. 232/7866 useless extension candidates. Maximal degree in co-relation 38318. Up to 5220 conditions per place. [2024-11-12 20:45:56,670 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 212 selfloop transitions, 24 changer transitions 40/299 dead transitions. [2024-11-12 20:45:56,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 299 transitions, 3341 flow [2024-11-12 20:45:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 20:45:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 20:45:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 279 transitions. [2024-11-12 20:45:56,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2024-11-12 20:45:56,672 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1457 flow. Second operand 18 states and 279 transitions. [2024-11-12 20:45:56,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 299 transitions, 3341 flow [2024-11-12 20:45:56,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 299 transitions, 3063 flow, removed 17 selfloop flow, removed 20 redundant places. [2024-11-12 20:45:56,746 INFO L231 Difference]: Finished difference. Result has 181 places, 150 transitions, 1274 flow [2024-11-12 20:45:56,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1274, PETRI_PLACES=181, PETRI_TRANSITIONS=150} [2024-11-12 20:45:56,747 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 135 predicate places. [2024-11-12 20:45:56,747 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 150 transitions, 1274 flow [2024-11-12 20:45:56,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.475) internal successors, (419), 40 states have internal predecessors, (419), 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) [2024-11-12 20:45:56,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:56,748 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:45:56,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:56,948 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 [2024-11-12 20:45:56,949 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:56,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:56,949 INFO L85 PathProgramCache]: Analyzing trace with hash -191448735, now seen corresponding path program 4 times [2024-11-12 20:45:56,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:56,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550165562] [2024-11-12 20:45:56,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:56,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:45:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:45:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550165562] [2024-11-12 20:45:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550165562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:45:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736576106] [2024-11-12 20:45:57,266 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:45:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:45:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:45:57,267 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) [2024-11-12 20:45:57,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-12 20:45:57,377 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 20:45:57,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:45:57,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-12 20:45:57,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:45:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:57,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:45:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:45:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736576106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:45:57,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:45:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-12 20:45:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11017743] [2024-11-12 20:45:57,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:45:57,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-12 20:45:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:45:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-12 20:45:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-11-12 20:45:58,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:45:58,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 150 transitions, 1274 flow. Second operand has 40 states, 40 states have (on average 10.525) internal successors, (421), 40 states have internal predecessors, (421), 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) [2024-11-12 20:45:58,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:45:58,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:45:58,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:45:59,547 INFO L124 PetriNetUnfolderBase]: 3791/6545 cut-off events. [2024-11-12 20:45:59,548 INFO L125 PetriNetUnfolderBase]: For 33775/34138 co-relation queries the response was YES. [2024-11-12 20:45:59,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31199 conditions, 6545 events. 3791/6545 cut-off events. For 33775/34138 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 41360 event pairs, 2523 based on Foata normal form. 126/6638 useless extension candidates. Maximal degree in co-relation 31162. Up to 5220 conditions per place. [2024-11-12 20:45:59,693 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 89 selfloop transitions, 12 changer transitions 127/244 dead transitions. [2024-11-12 20:45:59,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 244 transitions, 2523 flow [2024-11-12 20:45:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 20:45:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 20:45:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 260 transitions. [2024-11-12 20:45:59,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3140096618357488 [2024-11-12 20:45:59,695 INFO L175 Difference]: Start difference. First operand has 181 places, 150 transitions, 1274 flow. Second operand 18 states and 260 transitions. [2024-11-12 20:45:59,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 244 transitions, 2523 flow [2024-11-12 20:45:59,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 244 transitions, 2345 flow, removed 1 selfloop flow, removed 20 redundant places. [2024-11-12 20:45:59,730 INFO L231 Difference]: Finished difference. Result has 178 places, 117 transitions, 950 flow [2024-11-12 20:45:59,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=950, PETRI_PLACES=178, PETRI_TRANSITIONS=117} [2024-11-12 20:45:59,731 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 132 predicate places. [2024-11-12 20:45:59,731 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 117 transitions, 950 flow [2024-11-12 20:45:59,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.525) internal successors, (421), 40 states have internal predecessors, (421), 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) [2024-11-12 20:45:59,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:45:59,731 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-12 20:45:59,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-12 20:45:59,931 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 [2024-11-12 20:45:59,932 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:45:59,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:45:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1270131176, now seen corresponding path program 5 times [2024-11-12 20:45:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:45:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986720465] [2024-11-12 20:45:59,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:45:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:45:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986720465] [2024-11-12 20:46:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986720465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354012226] [2024-11-12 20:46:00,435 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 20:46:00,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:00,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:00,437 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) [2024-11-12 20:46:00,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-12 20:46:00,565 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-12 20:46:00,565 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:00,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 20:46:00,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:00,690 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 [2024-11-12 20:46:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:00,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:01,204 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 [2024-11-12 20:46:01,206 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 [2024-11-12 20:46:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:01,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354012226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:01,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:01,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-12 20:46:01,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769817182] [2024-11-12 20:46:01,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:01,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-12 20:46:01,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:01,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-12 20:46:01,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-12 20:46:01,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:46:01,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 117 transitions, 950 flow. Second operand has 43 states, 43 states have (on average 11.372093023255815) internal successors, (489), 43 states have internal predecessors, (489), 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) [2024-11-12 20:46:01,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:01,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:46:01,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:03,448 INFO L124 PetriNetUnfolderBase]: 2642/5158 cut-off events. [2024-11-12 20:46:03,449 INFO L125 PetriNetUnfolderBase]: For 27158/27354 co-relation queries the response was YES. [2024-11-12 20:46:03,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 5158 events. 2642/5158 cut-off events. For 27158/27354 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 33698 event pairs, 360 based on Foata normal form. 144/5286 useless extension candidates. Maximal degree in co-relation 23727. Up to 1246 conditions per place. [2024-11-12 20:46:03,477 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 460 selfloop transitions, 47 changer transitions 0/525 dead transitions. [2024-11-12 20:46:03,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 525 transitions, 5666 flow [2024-11-12 20:46:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:46:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:46:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 397 transitions. [2024-11-12 20:46:03,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3596014492753623 [2024-11-12 20:46:03,479 INFO L175 Difference]: Start difference. First operand has 178 places, 117 transitions, 950 flow. Second operand 24 states and 397 transitions. [2024-11-12 20:46:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 525 transitions, 5666 flow [2024-11-12 20:46:03,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 525 transitions, 5634 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-12 20:46:03,513 INFO L231 Difference]: Finished difference. Result has 160 places, 120 transitions, 1075 flow [2024-11-12 20:46:03,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1075, PETRI_PLACES=160, PETRI_TRANSITIONS=120} [2024-11-12 20:46:03,514 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 114 predicate places. [2024-11-12 20:46:03,514 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 120 transitions, 1075 flow [2024-11-12 20:46:03,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.372093023255815) internal successors, (489), 43 states have internal predecessors, (489), 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) [2024-11-12 20:46:03,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:03,514 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:03,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-12 20:46:03,715 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 [2024-11-12 20:46:03,715 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:03,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1284417516, now seen corresponding path program 5 times [2024-11-12 20:46:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207221172] [2024-11-12 20:46:03,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:04,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207221172] [2024-11-12 20:46:04,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207221172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069009382] [2024-11-12 20:46:04,159 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 20:46:04,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:04,161 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) [2024-11-12 20:46:04,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-12 20:46:04,271 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-12 20:46:04,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:04,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-12 20:46:04,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:04,300 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 [2024-11-12 20:46:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:04,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:04,691 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 [2024-11-12 20:46:04,695 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 [2024-11-12 20:46:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069009382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:04,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-12 20:46:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488434712] [2024-11-12 20:46:04,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:04,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-12 20:46:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-12 20:46:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-11-12 20:46:05,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:46:05,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 120 transitions, 1075 flow. Second operand has 39 states, 39 states have (on average 11.435897435897436) internal successors, (446), 39 states have internal predecessors, (446), 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) [2024-11-12 20:46:05,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:05,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:46:05,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:06,774 INFO L124 PetriNetUnfolderBase]: 2500/4653 cut-off events. [2024-11-12 20:46:06,774 INFO L125 PetriNetUnfolderBase]: For 34252/34528 co-relation queries the response was YES. [2024-11-12 20:46:06,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 4653 events. 2500/4653 cut-off events. For 34252/34528 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 29303 event pairs, 428 based on Foata normal form. 143/4774 useless extension candidates. Maximal degree in co-relation 23102. Up to 1176 conditions per place. [2024-11-12 20:46:06,810 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 486 selfloop transitions, 47 changer transitions 0/551 dead transitions. [2024-11-12 20:46:06,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 551 transitions, 7040 flow [2024-11-12 20:46:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:46:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:46:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 385 transitions. [2024-11-12 20:46:06,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.348731884057971 [2024-11-12 20:46:06,812 INFO L175 Difference]: Start difference. First operand has 160 places, 120 transitions, 1075 flow. Second operand 24 states and 385 transitions. [2024-11-12 20:46:06,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 551 transitions, 7040 flow [2024-11-12 20:46:06,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 551 transitions, 6059 flow, removed 13 selfloop flow, removed 21 redundant places. [2024-11-12 20:46:06,844 INFO L231 Difference]: Finished difference. Result has 164 places, 123 transitions, 1123 flow [2024-11-12 20:46:06,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1123, PETRI_PLACES=164, PETRI_TRANSITIONS=123} [2024-11-12 20:46:06,844 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 118 predicate places. [2024-11-12 20:46:06,845 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 123 transitions, 1123 flow [2024-11-12 20:46:06,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.435897435897436) internal successors, (446), 39 states have internal predecessors, (446), 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) [2024-11-12 20:46:06,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:06,845 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-12 20:46:06,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-12 20:46:07,045 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 [2024-11-12 20:46:07,046 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:07,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1747837332, now seen corresponding path program 4 times [2024-11-12 20:46:07,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:07,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574918499] [2024-11-12 20:46:07,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:07,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574918499] [2024-11-12 20:46:07,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574918499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:07,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846344486] [2024-11-12 20:46:07,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:46:07,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:07,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:07,719 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) [2024-11-12 20:46:07,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-12 20:46:07,851 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 20:46:07,851 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:07,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-12 20:46:07,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:08,016 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 [2024-11-12 20:46:08,102 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-12 20:46:08,102 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 35 treesize of output 15 [2024-11-12 20:46:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:08,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:08,995 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 25 treesize of output 23 [2024-11-12 20:46:08,999 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 118 treesize of output 110 [2024-11-12 20:46:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:09,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846344486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:09,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 47 [2024-11-12 20:46:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484589029] [2024-11-12 20:46:09,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:09,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-12 20:46:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-12 20:46:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2190, Unknown=0, NotChecked=0, Total=2352 [2024-11-12 20:46:09,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:46:09,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 123 transitions, 1123 flow. Second operand has 49 states, 49 states have (on average 11.326530612244898) internal successors, (555), 49 states have internal predecessors, (555), 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) [2024-11-12 20:46:09,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:09,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:46:09,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:11,731 INFO L124 PetriNetUnfolderBase]: 2444/4779 cut-off events. [2024-11-12 20:46:11,732 INFO L125 PetriNetUnfolderBase]: For 34623/34814 co-relation queries the response was YES. [2024-11-12 20:46:11,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23611 conditions, 4779 events. 2444/4779 cut-off events. For 34623/34814 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 30547 event pairs, 248 based on Foata normal form. 111/4875 useless extension candidates. Maximal degree in co-relation 23577. Up to 1096 conditions per place. [2024-11-12 20:46:11,766 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 508 selfloop transitions, 52 changer transitions 0/578 dead transitions. [2024-11-12 20:46:11,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 578 transitions, 7524 flow [2024-11-12 20:46:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 20:46:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 20:46:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 406 transitions. [2024-11-12 20:46:11,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35304347826086957 [2024-11-12 20:46:11,768 INFO L175 Difference]: Start difference. First operand has 164 places, 123 transitions, 1123 flow. Second operand 25 states and 406 transitions. [2024-11-12 20:46:11,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 578 transitions, 7524 flow [2024-11-12 20:46:11,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 578 transitions, 6481 flow, removed 27 selfloop flow, removed 21 redundant places. [2024-11-12 20:46:11,809 INFO L231 Difference]: Finished difference. Result has 167 places, 122 transitions, 1097 flow [2024-11-12 20:46:11,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1097, PETRI_PLACES=167, PETRI_TRANSITIONS=122} [2024-11-12 20:46:11,810 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 121 predicate places. [2024-11-12 20:46:11,810 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 122 transitions, 1097 flow [2024-11-12 20:46:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 11.326530612244898) internal successors, (555), 49 states have internal predecessors, (555), 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) [2024-11-12 20:46:11,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:11,810 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:11,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-12 20:46:12,011 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 [2024-11-12 20:46:12,011 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:12,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1770301310, now seen corresponding path program 4 times [2024-11-12 20:46:12,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:12,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606620354] [2024-11-12 20:46:12,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:12,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606620354] [2024-11-12 20:46:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606620354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639998569] [2024-11-12 20:46:12,612 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:46:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:12,615 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) [2024-11-12 20:46:12,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-12 20:46:12,732 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 20:46:12,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:12,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-12 20:46:12,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:12,867 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 19 treesize of output 1 [2024-11-12 20:46:12,944 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-12 20:46:12,944 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 35 treesize of output 15 [2024-11-12 20:46:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:13,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:13,618 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 25 treesize of output 23 [2024-11-12 20:46:13,621 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 54 treesize of output 50 [2024-11-12 20:46:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639998569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:13,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 47 [2024-11-12 20:46:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965521749] [2024-11-12 20:46:13,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:13,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-12 20:46:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-12 20:46:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2191, Unknown=0, NotChecked=0, Total=2352 [2024-11-12 20:46:14,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:46:14,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 122 transitions, 1097 flow. Second operand has 49 states, 49 states have (on average 11.448979591836734) internal successors, (561), 49 states have internal predecessors, (561), 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) [2024-11-12 20:46:14,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:14,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:46:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:16,548 INFO L124 PetriNetUnfolderBase]: 2373/4428 cut-off events. [2024-11-12 20:46:16,548 INFO L125 PetriNetUnfolderBase]: For 28500/28729 co-relation queries the response was YES. [2024-11-12 20:46:16,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21893 conditions, 4428 events. 2373/4428 cut-off events. For 28500/28729 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 27659 event pairs, 373 based on Foata normal form. 72/4478 useless extension candidates. Maximal degree in co-relation 21860. Up to 1061 conditions per place. [2024-11-12 20:46:16,581 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 483 selfloop transitions, 52 changer transitions 0/553 dead transitions. [2024-11-12 20:46:16,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 553 transitions, 6846 flow [2024-11-12 20:46:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 20:46:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 20:46:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 394 transitions. [2024-11-12 20:46:16,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3426086956521739 [2024-11-12 20:46:16,583 INFO L175 Difference]: Start difference. First operand has 167 places, 122 transitions, 1097 flow. Second operand 25 states and 394 transitions. [2024-11-12 20:46:16,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 553 transitions, 6846 flow [2024-11-12 20:46:16,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 553 transitions, 6178 flow, removed 26 selfloop flow, removed 23 redundant places. [2024-11-12 20:46:16,613 INFO L231 Difference]: Finished difference. Result has 168 places, 121 transitions, 1096 flow [2024-11-12 20:46:16,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1096, PETRI_PLACES=168, PETRI_TRANSITIONS=121} [2024-11-12 20:46:16,614 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-11-12 20:46:16,614 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 121 transitions, 1096 flow [2024-11-12 20:46:16,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 11.448979591836734) internal successors, (561), 49 states have internal predecessors, (561), 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) [2024-11-12 20:46:16,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:16,615 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-12 20:46:16,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-12 20:46:16,815 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 [2024-11-12 20:46:16,815 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:16,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -70508477, now seen corresponding path program 6 times [2024-11-12 20:46:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874235510] [2024-11-12 20:46:16,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874235510] [2024-11-12 20:46:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874235510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599107596] [2024-11-12 20:46:17,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 20:46:17,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:17,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:17,157 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) [2024-11-12 20:46:17,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-12 20:46:17,292 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-12 20:46:17,292 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:17,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:46:17,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:17,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599107596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:17,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-12 20:46:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557493882] [2024-11-12 20:46:17,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:17,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-12 20:46:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:17,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-12 20:46:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2024-11-12 20:46:18,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:46:18,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 121 transitions, 1096 flow. Second operand has 50 states, 50 states have (on average 10.46) internal successors, (523), 50 states have internal predecessors, (523), 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) [2024-11-12 20:46:18,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:18,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:46:18,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:19,245 INFO L124 PetriNetUnfolderBase]: 2607/4711 cut-off events. [2024-11-12 20:46:19,245 INFO L125 PetriNetUnfolderBase]: For 29194/29411 co-relation queries the response was YES. [2024-11-12 20:46:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23533 conditions, 4711 events. 2607/4711 cut-off events. For 29194/29411 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 28393 event pairs, 1242 based on Foata normal form. 57/4726 useless extension candidates. Maximal degree in co-relation 23501. Up to 2377 conditions per place. [2024-11-12 20:46:19,273 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 215 selfloop transitions, 27 changer transitions 50/308 dead transitions. [2024-11-12 20:46:19,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 308 transitions, 3521 flow [2024-11-12 20:46:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 20:46:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 20:46:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 338 transitions. [2024-11-12 20:46:19,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3339920948616601 [2024-11-12 20:46:19,275 INFO L175 Difference]: Start difference. First operand has 168 places, 121 transitions, 1096 flow. Second operand 22 states and 338 transitions. [2024-11-12 20:46:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 308 transitions, 3521 flow [2024-11-12 20:46:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 308 transitions, 3196 flow, removed 12 selfloop flow, removed 24 redundant places. [2024-11-12 20:46:19,307 INFO L231 Difference]: Finished difference. Result has 166 places, 112 transitions, 963 flow [2024-11-12 20:46:19,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=963, PETRI_PLACES=166, PETRI_TRANSITIONS=112} [2024-11-12 20:46:19,308 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2024-11-12 20:46:19,308 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 112 transitions, 963 flow [2024-11-12 20:46:19,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.46) internal successors, (523), 50 states have internal predecessors, (523), 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) [2024-11-12 20:46:19,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:19,308 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:19,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-12 20:46:19,509 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 [2024-11-12 20:46:19,509 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:19,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1114681988, now seen corresponding path program 6 times [2024-11-12 20:46:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:19,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309197561] [2024-11-12 20:46:19,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309197561] [2024-11-12 20:46:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309197561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698201721] [2024-11-12 20:46:19,804 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 20:46:19,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:19,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:19,807 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) [2024-11-12 20:46:19,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-12 20:46:19,932 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-12 20:46:19,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:19,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:46:19,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:20,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698201721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:20,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:20,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-12 20:46:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564125000] [2024-11-12 20:46:20,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:20,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-12 20:46:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-12 20:46:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2024-11-12 20:46:20,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-12 20:46:20,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 112 transitions, 963 flow. Second operand has 50 states, 50 states have (on average 10.5) internal successors, (525), 50 states have internal predecessors, (525), 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) [2024-11-12 20:46:20,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:20,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-12 20:46:20,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:21,811 INFO L124 PetriNetUnfolderBase]: 2271/3937 cut-off events. [2024-11-12 20:46:21,812 INFO L125 PetriNetUnfolderBase]: For 21263/21467 co-relation queries the response was YES. [2024-11-12 20:46:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19137 conditions, 3937 events. 2271/3937 cut-off events. For 21263/21467 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 22815 event pairs, 1156 based on Foata normal form. 26/3941 useless extension candidates. Maximal degree in co-relation 19106. Up to 2377 conditions per place. [2024-11-12 20:46:21,837 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 52 selfloop transitions, 12 changer transitions 188/262 dead transitions. [2024-11-12 20:46:21,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 262 transitions, 2853 flow [2024-11-12 20:46:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 20:46:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 20:46:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 314 transitions. [2024-11-12 20:46:21,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3102766798418972 [2024-11-12 20:46:21,839 INFO L175 Difference]: Start difference. First operand has 166 places, 112 transitions, 963 flow. Second operand 22 states and 314 transitions. [2024-11-12 20:46:21,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 262 transitions, 2853 flow [2024-11-12 20:46:21,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 262 transitions, 2632 flow, removed 12 selfloop flow, removed 21 redundant places. [2024-11-12 20:46:21,862 INFO L231 Difference]: Finished difference. Result has 166 places, 74 transitions, 581 flow [2024-11-12 20:46:21,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=581, PETRI_PLACES=166, PETRI_TRANSITIONS=74} [2024-11-12 20:46:21,862 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2024-11-12 20:46:21,863 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 74 transitions, 581 flow [2024-11-12 20:46:21,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.5) internal successors, (525), 50 states have internal predecessors, (525), 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) [2024-11-12 20:46:21,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:21,863 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-12 20:46:21,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-12 20:46:22,064 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 [2024-11-12 20:46:22,064 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:22,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -994857802, now seen corresponding path program 7 times [2024-11-12 20:46:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846174977] [2024-11-12 20:46:22,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:22,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846174977] [2024-11-12 20:46:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846174977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279094758] [2024-11-12 20:46:22,653 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 20:46:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:22,654 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) [2024-11-12 20:46:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-12 20:46:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:22,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-12 20:46:22,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:22,935 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 [2024-11-12 20:46:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:23,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:23,570 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 [2024-11-12 20:46:23,572 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 [2024-11-12 20:46:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:23,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279094758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:23,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:23,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-12 20:46:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010030903] [2024-11-12 20:46:23,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:23,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-12 20:46:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-12 20:46:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2594, Unknown=0, NotChecked=0, Total=2756 [2024-11-12 20:46:24,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-12 20:46:24,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 74 transitions, 581 flow. Second operand has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 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) [2024-11-12 20:46:24,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:24,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-12 20:46:24,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:26,603 INFO L124 PetriNetUnfolderBase]: 1544/2979 cut-off events. [2024-11-12 20:46:26,603 INFO L125 PetriNetUnfolderBase]: For 16178/16290 co-relation queries the response was YES. [2024-11-12 20:46:26,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14199 conditions, 2979 events. 1544/2979 cut-off events. For 16178/16290 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16595 event pairs, 171 based on Foata normal form. 32/3003 useless extension candidates. Maximal degree in co-relation 14176. Up to 621 conditions per place. [2024-11-12 20:46:26,620 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 349 selfloop transitions, 35 changer transitions 0/395 dead transitions. [2024-11-12 20:46:26,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 395 transitions, 4307 flow [2024-11-12 20:46:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 20:46:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 20:46:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 481 transitions. [2024-11-12 20:46:26,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3605697151424288 [2024-11-12 20:46:26,622 INFO L175 Difference]: Start difference. First operand has 166 places, 74 transitions, 581 flow. Second operand 29 states and 481 transitions. [2024-11-12 20:46:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 395 transitions, 4307 flow [2024-11-12 20:46:26,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 395 transitions, 3859 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-11-12 20:46:26,639 INFO L231 Difference]: Finished difference. Result has 141 places, 78 transitions, 630 flow [2024-11-12 20:46:26,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=630, PETRI_PLACES=141, PETRI_TRANSITIONS=78} [2024-11-12 20:46:26,639 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2024-11-12 20:46:26,639 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 78 transitions, 630 flow [2024-11-12 20:46:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 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) [2024-11-12 20:46:26,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:26,640 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-12 20:46:26,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-12 20:46:26,840 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 [2024-11-12 20:46:26,841 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-12 20:46:26,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -994857803, now seen corresponding path program 5 times [2024-11-12 20:46:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:26,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079776628] [2024-11-12 20:46:26,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:26,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079776628] [2024-11-12 20:46:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079776628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507356483] [2024-11-12 20:46:27,474 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 20:46:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:27,476 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) [2024-11-12 20:46:27,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-12 20:46:27,610 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-12 20:46:27,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:27,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-12 20:46:27,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:27,642 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 [2024-11-12 20:46:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:27,880 INFO L312 TraceCheckSpWp]: Computing backward predicates...