./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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-more-array-sum-alt.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 cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:08,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:08,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:08,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:08,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:08,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:08,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:08,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:08,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:08,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:08,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:08,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:08,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:08,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:08,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:08,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:08,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:08,726 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:08,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:08,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:08,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:08,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:08,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:08,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:08,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:08,730 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:08,730 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:08,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:08,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:08,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:08,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:08,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:08,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:08,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:08,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:08,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:08,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:08,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:08,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:08,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:08,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:08,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:08,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:08,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:08,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 [2024-11-19 14:07:08,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:09,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:09,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:09,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:09,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:09,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-19 14:07:10,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:10,637 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:10,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-19 14:07:10,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5280262f5/3a5b7933607c43d38c336c085c73b10d/FLAG8e7ceecc6 [2024-11-19 14:07:10,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5280262f5/3a5b7933607c43d38c336c085c73b10d [2024-11-19 14:07:10,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:10,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:10,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:10,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:10,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:10,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:10,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3e67fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10, skipping insertion in model container [2024-11-19 14:07:10,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:10,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:10,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:10,932 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:10,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:10,975 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:10,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10 WrapperNode [2024-11-19 14:07:10,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:10,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:10,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:10,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:10,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:10,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,039 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 236 [2024-11-19 14:07:11,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:11,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:11,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:11,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:11,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,102 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-11-19 14:07:11,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:11,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:11,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:11,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:11,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (1/1) ... [2024-11-19 14:07:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:11,171 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) [2024-11-19 14:07:11,174 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 [2024-11-19 14:07:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:11,236 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:11,370 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:11,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:11,817 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:11,817 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:12,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:12,091 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:07:12,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:12 BoogieIcfgContainer [2024-11-19 14:07:12,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:12,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:12,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:12,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:12,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:10" (1/3) ... [2024-11-19 14:07:12,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:12, skipping insertion in model container [2024-11-19 14:07:12,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:10" (2/3) ... [2024-11-19 14:07:12,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:12, skipping insertion in model container [2024-11-19 14:07:12,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:12" (3/3) ... [2024-11-19 14:07:12,104 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-11-19 14:07:12,121 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:12,121 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-19 14:07:12,121 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:12,213 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:07:12,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 219 flow [2024-11-19 14:07:12,295 INFO L124 PetriNetUnfolderBase]: 10/96 cut-off events. [2024-11-19 14:07:12,295 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:07:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 10/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-11-19 14:07:12,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 219 flow [2024-11-19 14:07:12,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 203 flow [2024-11-19 14:07:12,313 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:12,319 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;@7d367ec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:12,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-19 14:07:12,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:12,322 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:07:12,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:12,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:12,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:07:12,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:12,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 726712, now seen corresponding path program 1 times [2024-11-19 14:07:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617961757] [2024-11-19 14:07:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617961757] [2024-11-19 14:07:12,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617961757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:12,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:12,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886121074] [2024-11-19 14:07:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:12,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:12,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:12,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-19 14:07:12,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:12,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:12,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-19 14:07:12,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:13,953 INFO L124 PetriNetUnfolderBase]: 5173/10302 cut-off events. [2024-11-19 14:07:13,953 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-19 14:07:13,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17443 conditions, 10302 events. 5173/10302 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88946 event pairs, 3548 based on Foata normal form. 1/8373 useless extension candidates. Maximal degree in co-relation 16640. Up to 6885 conditions per place. [2024-11-19 14:07:14,046 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 42 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-19 14:07:14,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 97 transitions, 301 flow [2024-11-19 14:07:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-19 14:07:14,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 14:07:14,061 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 203 flow. Second operand 4 states and 264 transitions. [2024-11-19 14:07:14,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 97 transitions, 301 flow [2024-11-19 14:07:14,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 292 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:14,075 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 223 flow [2024-11-19 14:07:14,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2024-11-19 14:07:14,082 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-11-19 14:07:14,082 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 223 flow [2024-11-19 14:07:14,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:14,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:14,083 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:07:14,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:14,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 175398176, now seen corresponding path program 1 times [2024-11-19 14:07:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506895003] [2024-11-19 14:07:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:14,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:14,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506895003] [2024-11-19 14:07:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506895003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:14,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928587311] [2024-11-19 14:07:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:14,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:14,245 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) [2024-11-19 14:07:14,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:14,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:14,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:14,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928587311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:14,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:07:14,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388279563] [2024-11-19 14:07:14,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:14,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:14,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-19 14:07:14,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 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) [2024-11-19 14:07:14,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:14,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-19 14:07:14,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:15,522 INFO L124 PetriNetUnfolderBase]: 5173/10301 cut-off events. [2024-11-19 14:07:15,522 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-19 14:07:15,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17354 conditions, 10301 events. 5173/10301 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88826 event pairs, 3548 based on Foata normal form. 1/8373 useless extension candidates. Maximal degree in co-relation 17327. Up to 6880 conditions per place. [2024-11-19 14:07:15,694 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 38 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2024-11-19 14:07:15,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 309 flow [2024-11-19 14:07:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-11-19 14:07:15,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.622895622895623 [2024-11-19 14:07:15,698 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 223 flow. Second operand 6 states and 370 transitions. [2024-11-19 14:07:15,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 309 flow [2024-11-19 14:07:15,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:15,701 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 230 flow [2024-11-19 14:07:15,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2024-11-19 14:07:15,702 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-11-19 14:07:15,703 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 230 flow [2024-11-19 14:07:15,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 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) [2024-11-19 14:07:15,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:15,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:15,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:15,907 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 [2024-11-19 14:07:15,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:15,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1327580804, now seen corresponding path program 1 times [2024-11-19 14:07:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759709159] [2024-11-19 14:07:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759709159] [2024-11-19 14:07:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759709159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:15,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950805390] [2024-11-19 14:07:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:15,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:16,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-19 14:07:16,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:16,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:16,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-19 14:07:16,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:17,511 INFO L124 PetriNetUnfolderBase]: 9897/17785 cut-off events. [2024-11-19 14:07:17,511 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 14:07:17,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31319 conditions, 17785 events. 9897/17785 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 152354 event pairs, 3200 based on Foata normal form. 444/15049 useless extension candidates. Maximal degree in co-relation 31289. Up to 6292 conditions per place. [2024-11-19 14:07:17,662 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 98 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-19 14:07:17,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 149 transitions, 548 flow [2024-11-19 14:07:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-19 14:07:17,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2024-11-19 14:07:17,665 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 230 flow. Second operand 4 states and 303 transitions. [2024-11-19 14:07:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 149 transitions, 548 flow [2024-11-19 14:07:17,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 149 transitions, 526 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:17,668 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 242 flow [2024-11-19 14:07:17,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-11-19 14:07:17,669 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-11-19 14:07:17,670 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 242 flow [2024-11-19 14:07:17,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:17,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:17,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:07:17,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:07:17,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:17,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1142376923, now seen corresponding path program 1 times [2024-11-19 14:07:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004255569] [2024-11-19 14:07:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:17,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004255569] [2024-11-19 14:07:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004255569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722319354] [2024-11-19 14:07:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:17,783 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) [2024-11-19 14:07:17,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:17,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:17,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722319354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:17,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:17,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:07:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866846279] [2024-11-19 14:07:17,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:17,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:17,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 99 [2024-11-19 14:07:17,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 242 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:17,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:17,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 99 [2024-11-19 14:07:17,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:19,263 INFO L124 PetriNetUnfolderBase]: 6435/13259 cut-off events. [2024-11-19 14:07:19,263 INFO L125 PetriNetUnfolderBase]: For 2353/2695 co-relation queries the response was YES. [2024-11-19 14:07:19,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23951 conditions, 13259 events. 6435/13259 cut-off events. For 2353/2695 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 122911 event pairs, 4508 based on Foata normal form. 176/11097 useless extension candidates. Maximal degree in co-relation 23899. Up to 8590 conditions per place. [2024-11-19 14:07:19,357 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 43 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2024-11-19 14:07:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 384 flow [2024-11-19 14:07:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2024-11-19 14:07:19,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603030303030303 [2024-11-19 14:07:19,361 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 242 flow. Second operand 10 states and 597 transitions. [2024-11-19 14:07:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 384 flow [2024-11-19 14:07:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:19,383 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 316 flow [2024-11-19 14:07:19,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-11-19 14:07:19,384 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 15 predicate places. [2024-11-19 14:07:19,385 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 316 flow [2024-11-19 14:07:19,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:19,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:19,586 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 [2024-11-19 14:07:19,587 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:19,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1794667246, now seen corresponding path program 1 times [2024-11-19 14:07:19,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594071124] [2024-11-19 14:07:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:19,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594071124] [2024-11-19 14:07:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594071124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:19,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:19,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804175908] [2024-11-19 14:07:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:19,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:19,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-19 14:07:19,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:19,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-19 14:07:19,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:21,127 INFO L124 PetriNetUnfolderBase]: 8113/16817 cut-off events. [2024-11-19 14:07:21,127 INFO L125 PetriNetUnfolderBase]: For 2945/3287 co-relation queries the response was YES. [2024-11-19 14:07:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29955 conditions, 16817 events. 8113/16817 cut-off events. For 2945/3287 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 160005 event pairs, 5203 based on Foata normal form. 365/14404 useless extension candidates. Maximal degree in co-relation 29918. Up to 8594 conditions per place. [2024-11-19 14:07:21,291 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 105 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-19 14:07:21,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 655 flow [2024-11-19 14:07:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2024-11-19 14:07:21,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2024-11-19 14:07:21,294 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 316 flow. Second operand 5 states and 380 transitions. [2024-11-19 14:07:21,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 655 flow [2024-11-19 14:07:21,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 644 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:21,318 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 330 flow [2024-11-19 14:07:21,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-11-19 14:07:21,320 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2024-11-19 14:07:21,320 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 330 flow [2024-11-19 14:07:21,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:21,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:21,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:21,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:07:21,323 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:21,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 105412798, now seen corresponding path program 1 times [2024-11-19 14:07:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801946729] [2024-11-19 14:07:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801946729] [2024-11-19 14:07:21,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801946729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:21,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118596800] [2024-11-19 14:07:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:21,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:21,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:21,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-19 14:07:21,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:21,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:21,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-19 14:07:21,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:23,431 INFO L124 PetriNetUnfolderBase]: 14662/27058 cut-off events. [2024-11-19 14:07:23,432 INFO L125 PetriNetUnfolderBase]: For 8184/8733 co-relation queries the response was YES. [2024-11-19 14:07:23,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53160 conditions, 27058 events. 14662/27058 cut-off events. For 8184/8733 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 249213 event pairs, 5356 based on Foata normal form. 948/23486 useless extension candidates. Maximal degree in co-relation 53121. Up to 9929 conditions per place. [2024-11-19 14:07:23,571 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 115 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2024-11-19 14:07:23,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 754 flow [2024-11-19 14:07:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-11-19 14:07:23,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2024-11-19 14:07:23,576 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 330 flow. Second operand 4 states and 299 transitions. [2024-11-19 14:07:23,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 754 flow [2024-11-19 14:07:23,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 749 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:23,593 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 359 flow [2024-11-19 14:07:23,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-11-19 14:07:23,593 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2024-11-19 14:07:23,594 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 359 flow [2024-11-19 14:07:23,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:23,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:07:23,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1027169743, now seen corresponding path program 1 times [2024-11-19 14:07:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873658520] [2024-11-19 14:07:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:23,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:23,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873658520] [2024-11-19 14:07:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873658520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:23,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:23,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375174229] [2024-11-19 14:07:23,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:23,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:23,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:23,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-19 14:07:23,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:23,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-19 14:07:23,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:25,191 INFO L124 PetriNetUnfolderBase]: 8319/17552 cut-off events. [2024-11-19 14:07:25,191 INFO L125 PetriNetUnfolderBase]: For 7204/7995 co-relation queries the response was YES. [2024-11-19 14:07:25,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34605 conditions, 17552 events. 8319/17552 cut-off events. For 7204/7995 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 172114 event pairs, 5846 based on Foata normal form. 484/15327 useless extension candidates. Maximal degree in co-relation 34564. Up to 10564 conditions per place. [2024-11-19 14:07:25,275 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 88 selfloop transitions, 5 changer transitions 2/147 dead transitions. [2024-11-19 14:07:25,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 147 transitions, 638 flow [2024-11-19 14:07:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2024-11-19 14:07:25,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-19 14:07:25,277 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 359 flow. Second operand 5 states and 363 transitions. [2024-11-19 14:07:25,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 147 transitions, 638 flow [2024-11-19 14:07:25,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 147 transitions, 638 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:25,315 INFO L231 Difference]: Finished difference. Result has 122 places, 113 transitions, 384 flow [2024-11-19 14:07:25,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2024-11-19 14:07:25,316 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 28 predicate places. [2024-11-19 14:07:25,316 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 384 flow [2024-11-19 14:07:25,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:25,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:25,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:07:25,317 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:25,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -923662422, now seen corresponding path program 1 times [2024-11-19 14:07:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328605801] [2024-11-19 14:07:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:25,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328605801] [2024-11-19 14:07:25,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328605801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:25,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352333431] [2024-11-19 14:07:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:25,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:25,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:25,599 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) [2024-11-19 14:07:25,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:07:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:25,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 14:07:25,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:25,723 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 [2024-11-19 14:07:25,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 14:07:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:25,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:25,873 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 [2024-11-19 14:07:25,879 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 [2024-11-19 14:07:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352333431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:25,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:07:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812088235] [2024-11-19 14:07:25,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:25,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:25,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 99 [2024-11-19 14:07:25,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:25,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 99 [2024-11-19 14:07:25,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:29,436 INFO L124 PetriNetUnfolderBase]: 19350/38800 cut-off events. [2024-11-19 14:07:29,436 INFO L125 PetriNetUnfolderBase]: For 18586/19775 co-relation queries the response was YES. [2024-11-19 14:07:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80591 conditions, 38800 events. 19350/38800 cut-off events. For 18586/19775 co-relation queries the response was YES. Maximal size of possible extension queue 1430. Compared 392275 event pairs, 6167 based on Foata normal form. 721/34924 useless extension candidates. Maximal degree in co-relation 80547. Up to 9012 conditions per place. [2024-11-19 14:07:29,805 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 183 selfloop transitions, 19 changer transitions 1/253 dead transitions. [2024-11-19 14:07:29,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 253 transitions, 1210 flow [2024-11-19 14:07:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2024-11-19 14:07:29,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202020202020202 [2024-11-19 14:07:29,808 INFO L175 Difference]: Start difference. First operand has 122 places, 113 transitions, 384 flow. Second operand 10 states and 713 transitions. [2024-11-19 14:07:29,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 253 transitions, 1210 flow [2024-11-19 14:07:29,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 253 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:29,867 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 492 flow [2024-11-19 14:07:29,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=492, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2024-11-19 14:07:29,868 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-19 14:07:29,868 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 492 flow [2024-11-19 14:07:29,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:29,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:29,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:29,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:07:30,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:30,070 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:30,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1422887261, now seen corresponding path program 1 times [2024-11-19 14:07:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630112836] [2024-11-19 14:07:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630112836] [2024-11-19 14:07:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630112836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681725034] [2024-11-19 14:07:30,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:30,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:30,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-19 14:07:30,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 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) [2024-11-19 14:07:30,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:30,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-19 14:07:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:34,846 INFO L124 PetriNetUnfolderBase]: 28389/53259 cut-off events. [2024-11-19 14:07:34,846 INFO L125 PetriNetUnfolderBase]: For 54977/58267 co-relation queries the response was YES. [2024-11-19 14:07:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125132 conditions, 53259 events. 28389/53259 cut-off events. For 54977/58267 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 531160 event pairs, 11169 based on Foata normal form. 2415/49002 useless extension candidates. Maximal degree in co-relation 125084. Up to 20656 conditions per place. [2024-11-19 14:07:35,409 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 149 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-11-19 14:07:35,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 1222 flow [2024-11-19 14:07:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-11-19 14:07:35,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-19 14:07:35,411 INFO L175 Difference]: Start difference. First operand has 132 places, 122 transitions, 492 flow. Second operand 4 states and 297 transitions. [2024-11-19 14:07:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 1222 flow [2024-11-19 14:07:35,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1179 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:35,600 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 503 flow [2024-11-19 14:07:35,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-11-19 14:07:35,601 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-19 14:07:35,601 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 503 flow [2024-11-19 14:07:35,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 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) [2024-11-19 14:07:35,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:35,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:35,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:07:35,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:35,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1431205008, now seen corresponding path program 1 times [2024-11-19 14:07:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713505219] [2024-11-19 14:07:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:35,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713505219] [2024-11-19 14:07:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713505219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122767668] [2024-11-19 14:07:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:35,812 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) [2024-11-19 14:07:35,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:07:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:07:35,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:35,907 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 [2024-11-19 14:07:35,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 14:07:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:35,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:36,037 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 [2024-11-19 14:07:36,042 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 [2024-11-19 14:07:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122767668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:36,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:07:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538654915] [2024-11-19 14:07:36,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:36,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:36,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-11-19 14:07:36,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:36,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:36,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-11-19 14:07:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:41,335 INFO L124 PetriNetUnfolderBase]: 28322/52303 cut-off events. [2024-11-19 14:07:41,335 INFO L125 PetriNetUnfolderBase]: For 46441/49359 co-relation queries the response was YES. [2024-11-19 14:07:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126265 conditions, 52303 events. 28322/52303 cut-off events. For 46441/49359 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 512648 event pairs, 9159 based on Foata normal form. 1904/49734 useless extension candidates. Maximal degree in co-relation 126216. Up to 14249 conditions per place. [2024-11-19 14:07:41,948 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 199 selfloop transitions, 19 changer transitions 1/266 dead transitions. [2024-11-19 14:07:41,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 1437 flow [2024-11-19 14:07:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 693 transitions. [2024-11-19 14:07:41,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-19 14:07:41,952 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 503 flow. Second operand 10 states and 693 transitions. [2024-11-19 14:07:41,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 1437 flow [2024-11-19 14:07:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 266 transitions, 1437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:42,256 INFO L231 Difference]: Finished difference. Result has 143 places, 126 transitions, 567 flow [2024-11-19 14:07:42,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=567, PETRI_PLACES=143, PETRI_TRANSITIONS=126} [2024-11-19 14:07:42,257 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 49 predicate places. [2024-11-19 14:07:42,257 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 126 transitions, 567 flow [2024-11-19 14:07:42,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:42,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:42,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:42,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:42,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:42,459 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:42,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1159832973, now seen corresponding path program 1 times [2024-11-19 14:07:42,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:42,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126844242] [2024-11-19 14:07:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126844242] [2024-11-19 14:07:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126844242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:42,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:42,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:07:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616173496] [2024-11-19 14:07:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:42,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:42,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 99 [2024-11-19 14:07:42,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 126 transitions, 567 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:42,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 99 [2024-11-19 14:07:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:46,310 INFO L124 PetriNetUnfolderBase]: 19815/41855 cut-off events. [2024-11-19 14:07:46,310 INFO L125 PetriNetUnfolderBase]: For 52028/53891 co-relation queries the response was YES. [2024-11-19 14:07:46,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 41855 events. 19815/41855 cut-off events. For 52028/53891 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 452932 event pairs, 14513 based on Foata normal form. 1140/38732 useless extension candidates. Maximal degree in co-relation 103246. Up to 25927 conditions per place. [2024-11-19 14:07:46,825 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 64 selfloop transitions, 2 changer transitions 22/143 dead transitions. [2024-11-19 14:07:46,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 799 flow [2024-11-19 14:07:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 346 transitions. [2024-11-19 14:07:46,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989898989898989 [2024-11-19 14:07:46,827 INFO L175 Difference]: Start difference. First operand has 143 places, 126 transitions, 567 flow. Second operand 5 states and 346 transitions. [2024-11-19 14:07:46,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 799 flow [2024-11-19 14:07:47,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 773 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:47,140 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 523 flow [2024-11-19 14:07:47,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-11-19 14:07:47,140 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 48 predicate places. [2024-11-19 14:07:47,140 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 523 flow [2024-11-19 14:07:47,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:47,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:47,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:47,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:07:47,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:47,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1417683085, now seen corresponding path program 1 times [2024-11-19 14:07:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151688563] [2024-11-19 14:07:47,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:47,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:47,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151688563] [2024-11-19 14:07:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151688563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:47,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131094564] [2024-11-19 14:07:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:47,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:47,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2024-11-19 14:07:47,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:47,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:47,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2024-11-19 14:07:47,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:51,714 INFO L124 PetriNetUnfolderBase]: 25993/48578 cut-off events. [2024-11-19 14:07:51,714 INFO L125 PetriNetUnfolderBase]: For 56758/59021 co-relation queries the response was YES. [2024-11-19 14:07:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122370 conditions, 48578 events. 25993/48578 cut-off events. For 56758/59021 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 481270 event pairs, 9754 based on Foata normal form. 1863/46141 useless extension candidates. Maximal degree in co-relation 122332. Up to 17665 conditions per place. [2024-11-19 14:07:52,363 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 123 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2024-11-19 14:07:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 178 transitions, 988 flow [2024-11-19 14:07:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-11-19 14:07:52,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-11-19 14:07:52,365 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 523 flow. Second operand 4 states and 300 transitions. [2024-11-19 14:07:52,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 178 transitions, 988 flow [2024-11-19 14:07:52,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 178 transitions, 939 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-11-19 14:07:52,723 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 497 flow [2024-11-19 14:07:52,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-19 14:07:52,724 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 37 predicate places. [2024-11-19 14:07:52,724 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 497 flow [2024-11-19 14:07:52,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:52,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:52,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:52,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:07:52,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:07:52,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1417682060, now seen corresponding path program 1 times [2024-11-19 14:07:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:52,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101790944] [2024-11-19 14:07:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101790944] [2024-11-19 14:07:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101790944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:52,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351297282] [2024-11-19 14:07:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:52,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:07:52,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2024-11-19 14:07:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 497 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2024-11-19 14:07:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand