./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum2.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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:55:40,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:55:40,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:55:40,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:55:40,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:55:40,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:55:40,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:55:40,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:55:40,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:55:40,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:55:40,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:55:40,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:55:40,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:55:40,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:55:40,138 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:55:40,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:55:40,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:55:40,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:55:40,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:55:40,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:55:40,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:55:40,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:55:40,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:55:40,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:55:40,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:55:40,155 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:55:40,155 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:55:40,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:55:40,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:55:40,156 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:55:40,156 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:55:40,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:55:40,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:55:40,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:55:40,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:40,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:55:40,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:55:40,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:55:40,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:55:40,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:55:40,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:55:40,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:55:40,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:55:40,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:55:40,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-17 07:55:40,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:55:40,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:55:40,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:55:40,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:55:40,470 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:55:40,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-17 07:55:41,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:55:42,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:55:42,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-17 07:55:42,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb932c315/ef9633745a6a48519894bb6cd157856a/FLAGb1e20e573 [2024-11-17 07:55:42,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb932c315/ef9633745a6a48519894bb6cd157856a [2024-11-17 07:55:42,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:55:42,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:55:42,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:42,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:55:42,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:55:42,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665b2006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42, skipping insertion in model container [2024-11-17 07:55:42,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:55:42,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:42,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:55:42,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:55:42,783 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:55:42,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42 WrapperNode [2024-11-17 07:55:42,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:55:42,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:42,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:55:42,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:55:42,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,830 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 355 [2024-11-17 07:55:42,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:55:42,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:55:42,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:55:42,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:55:42,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,874 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-17 07:55:42,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:55:42,894 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:55:42,894 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:55:42,894 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:55:42,895 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (1/1) ... [2024-11-17 07:55:42,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:55:42,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:42,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:55:42,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:55:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:55:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:55:42,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:55:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:55:42,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:55:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:55:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:55:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:55:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:55:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:55:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:55:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:55:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:55:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:55:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:55:42,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:55:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:55:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:55:42,997 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:55:43,153 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:55:43,155 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:55:43,790 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:55:43,791 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:55:44,478 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:55:44,479 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:55:44,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:44 BoogieIcfgContainer [2024-11-17 07:55:44,480 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:55:44,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:55:44,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:55:44,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:55:44,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:55:42" (1/3) ... [2024-11-17 07:55:44,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731d2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:44, skipping insertion in model container [2024-11-17 07:55:44,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:42" (2/3) ... [2024-11-17 07:55:44,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731d2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:44, skipping insertion in model container [2024-11-17 07:55:44,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:55:44" (3/3) ... [2024-11-17 07:55:44,492 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-17 07:55:44,511 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:55:44,511 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-11-17 07:55:44,511 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:55:44,765 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:55:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 229 flow [2024-11-17 07:55:44,883 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2024-11-17 07:55:44,883 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:55:44,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 10/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 395 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-11-17 07:55:44,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 104 transitions, 229 flow [2024-11-17 07:55:44,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 213 flow [2024-11-17 07:55:44,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:55:44,918 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;@611c7709, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:55:44,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-17 07:55:44,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:55:44,923 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:55:44,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:55:44,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:44,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:55:44,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:44,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash 35647893, now seen corresponding path program 1 times [2024-11-17 07:55:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524230434] [2024-11-17 07:55:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524230434] [2024-11-17 07:55:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524230434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:45,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091499434] [2024-11-17 07:55:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:45,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:45,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2024-11-17 07:55:45,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:45,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:45,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2024-11-17 07:55:45,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:47,453 INFO L124 PetriNetUnfolderBase]: 5633/9530 cut-off events. [2024-11-17 07:55:47,454 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-11-17 07:55:47,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17837 conditions, 9530 events. 5633/9530 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 79873 event pairs, 4968 based on Foata normal form. 667/5644 useless extension candidates. Maximal degree in co-relation 17054. Up to 7963 conditions per place. [2024-11-17 07:55:47,526 INFO L140 encePairwiseOnDemand]: 73/104 looper letters, 41 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-11-17 07:55:47,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 257 flow [2024-11-17 07:55:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-17 07:55:47,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-17 07:55:47,544 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 213 flow. Second operand 4 states and 192 transitions. [2024-11-17 07:55:47,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 257 flow [2024-11-17 07:55:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 248 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:55:47,559 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 166 flow [2024-11-17 07:55:47,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2024-11-17 07:55:47,568 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -22 predicate places. [2024-11-17 07:55:47,569 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 166 flow [2024-11-17 07:55:47,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:47,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:47,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 07:55:47,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:55:47,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:47,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1105085722, now seen corresponding path program 1 times [2024-11-17 07:55:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649262955] [2024-11-17 07:55:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649262955] [2024-11-17 07:55:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649262955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935524352] [2024-11-17 07:55:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:47,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:47,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2024-11-17 07:55:47,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:47,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:47,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2024-11-17 07:55:47,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:49,462 INFO L124 PetriNetUnfolderBase]: 5635/9542 cut-off events. [2024-11-17 07:55:49,462 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-17 07:55:49,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17743 conditions, 9542 events. 5635/9542 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 79882 event pairs, 4968 based on Foata normal form. 2/4993 useless extension candidates. Maximal degree in co-relation 17687. Up to 7972 conditions per place. [2024-11-17 07:55:49,531 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 46 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-17 07:55:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 294 flow [2024-11-17 07:55:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-11-17 07:55:49,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4206730769230769 [2024-11-17 07:55:49,533 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 166 flow. Second operand 4 states and 175 transitions. [2024-11-17 07:55:49,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 294 flow [2024-11-17 07:55:49,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:55:49,537 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 210 flow [2024-11-17 07:55:49,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-11-17 07:55:49,539 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -19 predicate places. [2024-11-17 07:55:49,539 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 210 flow [2024-11-17 07:55:49,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:49,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:49,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:55:49,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:55:49,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:49,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -224006996, now seen corresponding path program 1 times [2024-11-17 07:55:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424053838] [2024-11-17 07:55:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:49,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424053838] [2024-11-17 07:55:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424053838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422619854] [2024-11-17 07:55:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:49,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:49,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:49,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:55:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:49,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:49,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:49,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422619854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:49,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-17 07:55:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837029075] [2024-11-17 07:55:49,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:49,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:55:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:55:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:55:49,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2024-11-17 07:55:49,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:49,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:49,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2024-11-17 07:55:49,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:51,824 INFO L124 PetriNetUnfolderBase]: 5641/9578 cut-off events. [2024-11-17 07:55:51,825 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-11-17 07:55:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17831 conditions, 9578 events. 5641/9578 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1394. Compared 80434 event pairs, 4968 based on Foata normal form. 0/5025 useless extension candidates. Maximal degree in co-relation 17702. Up to 7975 conditions per place. [2024-11-17 07:55:51,876 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 46 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-11-17 07:55:51,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 430 flow [2024-11-17 07:55:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:55:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:55:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 377 transitions. [2024-11-17 07:55:51,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-11-17 07:55:51,884 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 210 flow. Second operand 10 states and 377 transitions. [2024-11-17 07:55:51,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 98 transitions, 430 flow [2024-11-17 07:55:51,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:55:51,887 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 372 flow [2024-11-17 07:55:51,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-11-17 07:55:51,888 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -7 predicate places. [2024-11-17 07:55:51,889 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 372 flow [2024-11-17 07:55:51,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:51,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:51,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:51,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:55:52,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:52,095 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:52,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -112704909, now seen corresponding path program 1 times [2024-11-17 07:55:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956146511] [2024-11-17 07:55:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:52,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956146511] [2024-11-17 07:55:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956146511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:52,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:52,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:52,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753946115] [2024-11-17 07:55:52,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:52,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:52,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:52,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-17 07:55:52,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:52,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:52,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-17 07:55:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:53,628 INFO L124 PetriNetUnfolderBase]: 5641/9603 cut-off events. [2024-11-17 07:55:53,628 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-11-17 07:55:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 9603 events. 5641/9603 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 80310 event pairs, 4968 based on Foata normal form. 5/5057 useless extension candidates. Maximal degree in co-relation 17851. Up to 7992 conditions per place. [2024-11-17 07:55:53,698 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 72 selfloop transitions, 9 changer transitions 3/111 dead transitions. [2024-11-17 07:55:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 111 transitions, 610 flow [2024-11-17 07:55:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:55:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:55:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2024-11-17 07:55:53,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-11-17 07:55:53,700 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 372 flow. Second operand 5 states and 222 transitions. [2024-11-17 07:55:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 111 transitions, 610 flow [2024-11-17 07:55:53,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 530 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-17 07:55:53,705 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 350 flow [2024-11-17 07:55:53,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-11-17 07:55:53,706 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2024-11-17 07:55:53,706 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 350 flow [2024-11-17 07:55:53,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:53,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:53,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:53,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:55:53,707 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:53,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:53,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891295, now seen corresponding path program 1 times [2024-11-17 07:55:53,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:53,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313953861] [2024-11-17 07:55:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:55:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313953861] [2024-11-17 07:55:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313953861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:53,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:53,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:53,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856800926] [2024-11-17 07:55:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:53,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:53,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:53,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-11-17 07:55:53,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:53,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:53,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-11-17 07:55:53,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:55,797 INFO L124 PetriNetUnfolderBase]: 9324/15966 cut-off events. [2024-11-17 07:55:55,798 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-17 07:55:55,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29541 conditions, 15966 events. 9324/15966 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 141287 event pairs, 3968 based on Foata normal form. 0/8334 useless extension candidates. Maximal degree in co-relation 29450. Up to 6655 conditions per place. [2024-11-17 07:55:55,899 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 100 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-17 07:55:55,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 629 flow [2024-11-17 07:55:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-11-17 07:55:55,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 07:55:55,902 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 350 flow. Second operand 3 states and 182 transitions. [2024-11-17 07:55:55,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 629 flow [2024-11-17 07:55:55,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 133 transitions, 629 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:55:55,911 INFO L231 Difference]: Finished difference. Result has 98 places, 101 transitions, 372 flow [2024-11-17 07:55:55,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=101} [2024-11-17 07:55:55,914 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -1 predicate places. [2024-11-17 07:55:55,915 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 101 transitions, 372 flow [2024-11-17 07:55:55,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:55,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:55,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:55,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:55:55,916 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:55:55,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891288, now seen corresponding path program 1 times [2024-11-17 07:55:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:55,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622610536] [2024-11-17 07:55:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622610536] [2024-11-17 07:55:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622610536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475252775] [2024-11-17 07:55:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:56,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:56,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:55:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:56,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:55:56,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:56,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 07:55:56,722 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 [2024-11-17 07:55:56,775 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:55:56,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 07:55:56,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 07:55:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:56,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:55:57,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:55:57,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-17 07:55:57,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:55:57,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-17 07:55:57,075 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 11 treesize of output 9 [2024-11-17 07:55:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475252775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:55:57,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:55:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-17 07:55:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550886813] [2024-11-17 07:55:57,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:55:57,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:55:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:55:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=191, Unknown=4, NotChecked=0, Total=240 [2024-11-17 07:55:57,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 104 [2024-11-17 07:55:57,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 101 transitions, 372 flow. Second operand has 16 states, 16 states have (on average 31.1875) internal successors, (499), 16 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:57,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:57,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 104 [2024-11-17 07:55:57,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:00,453 INFO L124 PetriNetUnfolderBase]: 12896/20554 cut-off events. [2024-11-17 07:56:00,454 INFO L125 PetriNetUnfolderBase]: For 1329/1329 co-relation queries the response was YES. [2024-11-17 07:56:00,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40974 conditions, 20554 events. 12896/20554 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 167589 event pairs, 5105 based on Foata normal form. 0/11737 useless extension candidates. Maximal degree in co-relation 40878. Up to 10577 conditions per place. [2024-11-17 07:56:00,574 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 125 selfloop transitions, 19 changer transitions 2/170 dead transitions. [2024-11-17 07:56:00,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 170 transitions, 839 flow [2024-11-17 07:56:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:56:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:56:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 442 transitions. [2024-11-17 07:56:00,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-17 07:56:00,580 INFO L175 Difference]: Start difference. First operand has 98 places, 101 transitions, 372 flow. Second operand 11 states and 442 transitions. [2024-11-17 07:56:00,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 170 transitions, 839 flow [2024-11-17 07:56:00,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 833 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:00,597 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 434 flow [2024-11-17 07:56:00,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=434, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-11-17 07:56:00,600 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2024-11-17 07:56:00,600 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 434 flow [2024-11-17 07:56:00,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 31.1875) internal successors, (499), 16 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:00,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:00,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:00,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:56:00,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 07:56:00,806 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:00,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891294, now seen corresponding path program 1 times [2024-11-17 07:56:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:00,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209226165] [2024-11-17 07:56:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:56:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:00,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209226165] [2024-11-17 07:56:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209226165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:00,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:56:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755049277] [2024-11-17 07:56:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:00,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:00,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:00,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:00,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-11-17 07:56:00,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-11-17 07:56:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:02,613 INFO L124 PetriNetUnfolderBase]: 9102/16478 cut-off events. [2024-11-17 07:56:02,613 INFO L125 PetriNetUnfolderBase]: For 3824/3824 co-relation queries the response was YES. [2024-11-17 07:56:02,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33403 conditions, 16478 events. 9102/16478 cut-off events. For 3824/3824 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 153040 event pairs, 3468 based on Foata normal form. 0/10225 useless extension candidates. Maximal degree in co-relation 33306. Up to 7419 conditions per place. [2024-11-17 07:56:02,698 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 100 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-17 07:56:02,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 699 flow [2024-11-17 07:56:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-11-17 07:56:02,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-11-17 07:56:02,700 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 434 flow. Second operand 3 states and 180 transitions. [2024-11-17 07:56:02,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 699 flow [2024-11-17 07:56:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 675 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:02,707 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 412 flow [2024-11-17 07:56:02,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-11-17 07:56:02,708 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 7 predicate places. [2024-11-17 07:56:02,708 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 412 flow [2024-11-17 07:56:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:02,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:02,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:02,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:56:02,709 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:02,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891289, now seen corresponding path program 1 times [2024-11-17 07:56:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477588282] [2024-11-17 07:56:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477588282] [2024-11-17 07:56:03,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477588282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973897495] [2024-11-17 07:56:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:03,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:03,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:03,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:56:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:03,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-17 07:56:03,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:03,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 07:56:03,213 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 [2024-11-17 07:56:03,250 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:56:03,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 07:56:03,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 07:56:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:03,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:03,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:56:03,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-17 07:56:03,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:56:03,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-17 07:56:03,470 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 9 treesize of output 7 [2024-11-17 07:56:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973897495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:03,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-17 07:56:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915735318] [2024-11-17 07:56:03,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:03,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:56:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:56:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=189, Unknown=3, NotChecked=0, Total=240 [2024-11-17 07:56:03,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 104 [2024-11-17 07:56:03,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 412 flow. Second operand has 16 states, 16 states have (on average 31.1875) internal successors, (499), 16 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:03,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:03,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 104 [2024-11-17 07:56:03,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:06,416 INFO L124 PetriNetUnfolderBase]: 11812/19098 cut-off events. [2024-11-17 07:56:06,416 INFO L125 PetriNetUnfolderBase]: For 3759/3759 co-relation queries the response was YES. [2024-11-17 07:56:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40172 conditions, 19098 events. 11812/19098 cut-off events. For 3759/3759 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 163351 event pairs, 6657 based on Foata normal form. 222/11437 useless extension candidates. Maximal degree in co-relation 40075. Up to 10577 conditions per place. [2024-11-17 07:56:06,625 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 123 selfloop transitions, 19 changer transitions 2/168 dead transitions. [2024-11-17 07:56:06,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 168 transitions, 860 flow [2024-11-17 07:56:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:56:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:56:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2024-11-17 07:56:06,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-11-17 07:56:06,628 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 412 flow. Second operand 11 states and 440 transitions. [2024-11-17 07:56:06,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 168 transitions, 860 flow [2024-11-17 07:56:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:06,640 INFO L231 Difference]: Finished difference. Result has 115 places, 103 transitions, 438 flow [2024-11-17 07:56:06,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=438, PETRI_PLACES=115, PETRI_TRANSITIONS=103} [2024-11-17 07:56:06,641 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2024-11-17 07:56:06,642 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 103 transitions, 438 flow [2024-11-17 07:56:06,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 31.1875) internal successors, (499), 16 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:06,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:06,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:06,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:06,846 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 [2024-11-17 07:56:06,847 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:06,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891286, now seen corresponding path program 1 times [2024-11-17 07:56:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:06,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763602687] [2024-11-17 07:56:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763602687] [2024-11-17 07:56:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763602687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920806750] [2024-11-17 07:56:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:07,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:07,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:56:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:07,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 07:56:07,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:07,322 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 [2024-11-17 07:56:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:07,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:07,426 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 [2024-11-17 07:56:07,430 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 [2024-11-17 07:56:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920806750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:07,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:07,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-17 07:56:07,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984028577] [2024-11-17 07:56:07,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:07,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 07:56:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 07:56:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-17 07:56:07,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-11-17 07:56:07,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 103 transitions, 438 flow. Second operand has 13 states, 13 states have (on average 35.76923076923077) internal successors, (465), 13 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-11-17 07:56:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:09,446 INFO L124 PetriNetUnfolderBase]: 8018/14642 cut-off events. [2024-11-17 07:56:09,447 INFO L125 PetriNetUnfolderBase]: For 5906/5906 co-relation queries the response was YES. [2024-11-17 07:56:09,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30666 conditions, 14642 events. 8018/14642 cut-off events. For 5906/5906 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 134136 event pairs, 2657 based on Foata normal form. 0/9404 useless extension candidates. Maximal degree in co-relation 30570. Up to 4584 conditions per place. [2024-11-17 07:56:09,544 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 99 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2024-11-17 07:56:09,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 154 transitions, 794 flow [2024-11-17 07:56:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:56:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:56:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 377 transitions. [2024-11-17 07:56:09,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-11-17 07:56:09,546 INFO L175 Difference]: Start difference. First operand has 115 places, 103 transitions, 438 flow. Second operand 8 states and 377 transitions. [2024-11-17 07:56:09,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 154 transitions, 794 flow [2024-11-17 07:56:09,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 765 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-17 07:56:09,561 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 482 flow [2024-11-17 07:56:09,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2024-11-17 07:56:09,562 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 17 predicate places. [2024-11-17 07:56:09,562 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 482 flow [2024-11-17 07:56:09,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.76923076923077) internal successors, (465), 13 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:09,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:09,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:09,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:09,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:09,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:09,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1115891285, now seen corresponding path program 1 times [2024-11-17 07:56:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455404908] [2024-11-17 07:56:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455404908] [2024-11-17 07:56:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455404908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574838181] [2024-11-17 07:56:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:09,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:09,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:09,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:56:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:10,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 07:56:10,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:10,133 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 [2024-11-17 07:56:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:10,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:10,235 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 [2024-11-17 07:56:10,238 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 [2024-11-17 07:56:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:10,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574838181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:10,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-17 07:56:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658443696] [2024-11-17 07:56:10,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:10,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 07:56:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 07:56:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-17 07:56:10,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-11-17 07:56:10,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 482 flow. Second operand has 13 states, 13 states have (on average 35.76923076923077) internal successors, (465), 13 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:10,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:10,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-11-17 07:56:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:12,080 INFO L124 PetriNetUnfolderBase]: 7476/12806 cut-off events. [2024-11-17 07:56:12,080 INFO L125 PetriNetUnfolderBase]: For 13086/13086 co-relation queries the response was YES. [2024-11-17 07:56:12,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32269 conditions, 12806 events. 7476/12806 cut-off events. For 13086/13086 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 106284 event pairs, 1441 based on Foata normal form. 222/8514 useless extension candidates. Maximal degree in co-relation 32170. Up to 4584 conditions per place. [2024-11-17 07:56:12,127 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 98 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2024-11-17 07:56:12,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 830 flow [2024-11-17 07:56:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:56:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:56:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 376 transitions. [2024-11-17 07:56:12,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-11-17 07:56:12,129 INFO L175 Difference]: Start difference. First operand has 116 places, 104 transitions, 482 flow. Second operand 8 states and 376 transitions. [2024-11-17 07:56:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 830 flow [2024-11-17 07:56:12,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 153 transitions, 769 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-17 07:56:12,142 INFO L231 Difference]: Finished difference. Result has 115 places, 103 transitions, 467 flow [2024-11-17 07:56:12,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=115, PETRI_TRANSITIONS=103} [2024-11-17 07:56:12,143 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2024-11-17 07:56:12,143 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 103 transitions, 467 flow [2024-11-17 07:56:12,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.76923076923077) internal successors, (465), 13 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:12,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:12,144 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:56:12,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:56:12,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 07:56:12,349 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:12,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1933423262, now seen corresponding path program 2 times [2024-11-17 07:56:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:12,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860198485] [2024-11-17 07:56:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860198485] [2024-11-17 07:56:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860198485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336692939] [2024-11-17 07:56:12,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:12,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:12,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:12,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:12,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:56:12,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:12,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:12,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:12,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:12,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336692939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:12,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:56:12,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688938517] [2024-11-17 07:56:12,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:12,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:56:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:56:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:56:12,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 104 [2024-11-17 07:56:12,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 103 transitions, 467 flow. Second operand has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:12,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:12,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 104 [2024-11-17 07:56:12,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:14,243 INFO L124 PetriNetUnfolderBase]: 7478/12706 cut-off events. [2024-11-17 07:56:14,243 INFO L125 PetriNetUnfolderBase]: For 11950/11950 co-relation queries the response was YES. [2024-11-17 07:56:14,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31540 conditions, 12706 events. 7478/12706 cut-off events. For 11950/11950 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 107240 event pairs, 6657 based on Foata normal form. 4/8170 useless extension candidates. Maximal degree in co-relation 31396. Up to 10589 conditions per place. [2024-11-17 07:56:14,326 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 52 selfloop transitions, 39 changer transitions 1/117 dead transitions. [2024-11-17 07:56:14,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 117 transitions, 716 flow [2024-11-17 07:56:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:56:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:56:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 762 transitions. [2024-11-17 07:56:14,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30528846153846156 [2024-11-17 07:56:14,330 INFO L175 Difference]: Start difference. First operand has 115 places, 103 transitions, 467 flow. Second operand 24 states and 762 transitions. [2024-11-17 07:56:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 117 transitions, 716 flow [2024-11-17 07:56:14,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 117 transitions, 679 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-17 07:56:14,338 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 573 flow [2024-11-17 07:56:14,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=573, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-11-17 07:56:14,339 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 35 predicate places. [2024-11-17 07:56:14,339 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 573 flow [2024-11-17 07:56:14,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:14,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:14,339 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:14,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:56:14,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:14,541 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:14,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2129705911, now seen corresponding path program 1 times [2024-11-17 07:56:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:14,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843457369] [2024-11-17 07:56:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843457369] [2024-11-17 07:56:14,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843457369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:14,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357162134] [2024-11-17 07:56:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:14,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:14,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:14,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:56:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:14,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:56:14,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:14,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:15,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357162134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:15,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-17 07:56:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870435848] [2024-11-17 07:56:15,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:15,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:56:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:56:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:56:15,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 104 [2024-11-17 07:56:15,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 573 flow. Second operand has 17 states, 17 states have (on average 27.823529411764707) internal successors, (473), 17 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:15,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:15,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 104 [2024-11-17 07:56:15,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:17,365 INFO L124 PetriNetUnfolderBase]: 11675/19302 cut-off events. [2024-11-17 07:56:17,366 INFO L125 PetriNetUnfolderBase]: For 15668/15668 co-relation queries the response was YES. [2024-11-17 07:56:17,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47782 conditions, 19302 events. 11675/19302 cut-off events. For 15668/15668 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 162053 event pairs, 8454 based on Foata normal form. 2/12811 useless extension candidates. Maximal degree in co-relation 47678. Up to 11644 conditions per place. [2024-11-17 07:56:17,503 INFO L140 encePairwiseOnDemand]: 90/104 looper letters, 144 selfloop transitions, 51 changer transitions 4/222 dead transitions. [2024-11-17 07:56:17,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 222 transitions, 1499 flow [2024-11-17 07:56:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 07:56:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 07:56:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 461 transitions. [2024-11-17 07:56:17,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36939102564102566 [2024-11-17 07:56:17,505 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 573 flow. Second operand 12 states and 461 transitions. [2024-11-17 07:56:17,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 222 transitions, 1499 flow [2024-11-17 07:56:17,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 222 transitions, 1394 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-11-17 07:56:17,514 INFO L231 Difference]: Finished difference. Result has 144 places, 129 transitions, 792 flow [2024-11-17 07:56:17,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=792, PETRI_PLACES=144, PETRI_TRANSITIONS=129} [2024-11-17 07:56:17,515 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 45 predicate places. [2024-11-17 07:56:17,515 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 129 transitions, 792 flow [2024-11-17 07:56:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.823529411764707) internal successors, (473), 17 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:17,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:17,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:17,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:17,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:17,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:17,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1370250974, now seen corresponding path program 1 times [2024-11-17 07:56:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105569159] [2024-11-17 07:56:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:56:17,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:17,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105569159] [2024-11-17 07:56:17,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105569159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:17,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:17,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:17,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88332956] [2024-11-17 07:56:17,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:17,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:17,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:17,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:17,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 104 [2024-11-17 07:56:17,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 129 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:17,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:17,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 104 [2024-11-17 07:56:17,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:20,106 INFO L124 PetriNetUnfolderBase]: 12184/20367 cut-off events. [2024-11-17 07:56:20,106 INFO L125 PetriNetUnfolderBase]: For 15682/15682 co-relation queries the response was YES. [2024-11-17 07:56:20,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50725 conditions, 20367 events. 12184/20367 cut-off events. For 15682/15682 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 174801 event pairs, 3958 based on Foata normal form. 580/14683 useless extension candidates. Maximal degree in co-relation 50623. Up to 14530 conditions per place. [2024-11-17 07:56:20,251 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 148 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2024-11-17 07:56:20,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 184 transitions, 1238 flow [2024-11-17 07:56:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-17 07:56:20,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 07:56:20,253 INFO L175 Difference]: Start difference. First operand has 144 places, 129 transitions, 792 flow. Second operand 4 states and 228 transitions. [2024-11-17 07:56:20,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 184 transitions, 1238 flow [2024-11-17 07:56:20,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 184 transitions, 1186 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-17 07:56:20,277 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 761 flow [2024-11-17 07:56:20,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=761, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2024-11-17 07:56:20,278 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 40 predicate places. [2024-11-17 07:56:20,278 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 761 flow [2024-11-17 07:56:20,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:20,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:20,278 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:20,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:56:20,278 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:20,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash -391898231, now seen corresponding path program 1 times [2024-11-17 07:56:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338085245] [2024-11-17 07:56:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338085245] [2024-11-17 07:56:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338085245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119469468] [2024-11-17 07:56:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:20,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:20,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:56:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:20,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 07:56:20,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:20,834 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 [2024-11-17 07:56:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:20,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:21,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:56:21,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:56:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119469468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:21,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:21,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-17 07:56:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38997203] [2024-11-17 07:56:21,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:21,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:56:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:56:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:56:21,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 104 [2024-11-17 07:56:21,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 761 flow. Second operand has 22 states, 22 states have (on average 28.09090909090909) internal successors, (618), 22 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:21,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:21,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 104 [2024-11-17 07:56:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:25,016 INFO L124 PetriNetUnfolderBase]: 15332/25245 cut-off events. [2024-11-17 07:56:25,017 INFO L125 PetriNetUnfolderBase]: For 34603/34603 co-relation queries the response was YES. [2024-11-17 07:56:25,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70397 conditions, 25245 events. 15332/25245 cut-off events. For 34603/34603 co-relation queries the response was YES. Maximal size of possible extension queue 1762. Compared 222819 event pairs, 6307 based on Foata normal form. 0/18158 useless extension candidates. Maximal degree in co-relation 70290. Up to 6700 conditions per place. [2024-11-17 07:56:25,244 INFO L140 encePairwiseOnDemand]: 84/104 looper letters, 223 selfloop transitions, 73 changer transitions 8/329 dead transitions. [2024-11-17 07:56:25,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 329 transitions, 2399 flow [2024-11-17 07:56:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:56:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:56:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 735 transitions. [2024-11-17 07:56:25,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37196356275303644 [2024-11-17 07:56:25,246 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 761 flow. Second operand 19 states and 735 transitions. [2024-11-17 07:56:25,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 329 transitions, 2399 flow [2024-11-17 07:56:25,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 329 transitions, 2345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:25,272 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 999 flow [2024-11-17 07:56:25,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=999, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-11-17 07:56:25,274 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 59 predicate places. [2024-11-17 07:56:25,274 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 999 flow [2024-11-17 07:56:25,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 28.09090909090909) internal successors, (618), 22 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:25,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:25,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:25,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:56:25,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 07:56:25,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:25,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -391898230, now seen corresponding path program 1 times [2024-11-17 07:56:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425449991] [2024-11-17 07:56:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:25,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425449991] [2024-11-17 07:56:25,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425449991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928896437] [2024-11-17 07:56:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:25,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:25,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:25,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:25,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:56:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:25,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 07:56:26,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:26,058 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 [2024-11-17 07:56:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:26,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:26,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-17 07:56:26,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-17 07:56:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928896437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:26,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-17 07:56:26,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783421888] [2024-11-17 07:56:26,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:26,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:56:26,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:56:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:56:26,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 104 [2024-11-17 07:56:26,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 999 flow. Second operand has 22 states, 22 states have (on average 28.09090909090909) internal successors, (618), 22 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:26,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:26,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 104 [2024-11-17 07:56:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:30,217 INFO L124 PetriNetUnfolderBase]: 15151/24978 cut-off events. [2024-11-17 07:56:30,218 INFO L125 PetriNetUnfolderBase]: For 32098/32098 co-relation queries the response was YES. [2024-11-17 07:56:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74700 conditions, 24978 events. 15151/24978 cut-off events. For 32098/32098 co-relation queries the response was YES. Maximal size of possible extension queue 1762. Compared 220571 event pairs, 6307 based on Foata normal form. 0/18977 useless extension candidates. Maximal degree in co-relation 74581. Up to 6700 conditions per place. [2024-11-17 07:56:30,478 INFO L140 encePairwiseOnDemand]: 84/104 looper letters, 222 selfloop transitions, 73 changer transitions 8/328 dead transitions. [2024-11-17 07:56:30,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 328 transitions, 2538 flow [2024-11-17 07:56:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:56:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:56:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 734 transitions. [2024-11-17 07:56:30,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3714574898785425 [2024-11-17 07:56:30,480 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 999 flow. Second operand 19 states and 734 transitions. [2024-11-17 07:56:30,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 328 transitions, 2538 flow [2024-11-17 07:56:30,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 328 transitions, 2469 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-17 07:56:30,587 INFO L231 Difference]: Finished difference. Result has 169 places, 156 transitions, 1080 flow [2024-11-17 07:56:30,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1080, PETRI_PLACES=169, PETRI_TRANSITIONS=156} [2024-11-17 07:56:30,588 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 70 predicate places. [2024-11-17 07:56:30,588 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 156 transitions, 1080 flow [2024-11-17 07:56:30,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 28.09090909090909) internal successors, (618), 22 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:30,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:30,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:30,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:30,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:56:30,794 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:30,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -391898227, now seen corresponding path program 1 times [2024-11-17 07:56:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908171326] [2024-11-17 07:56:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908171326] [2024-11-17 07:56:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908171326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166490488] [2024-11-17 07:56:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:31,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:31,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:56:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:31,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 07:56:31,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:31,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 07:56:31,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:56:31,652 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 07:56:31,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 07:56:31,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 07:56:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:31,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:32,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:56:32,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-17 07:56:32,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:56:32,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-17 07:56:32,299 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 13 treesize of output 7 [2024-11-17 07:56:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166490488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:32,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:32,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-17 07:56:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184661388] [2024-11-17 07:56:32,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:32,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 07:56:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 07:56:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=576, Unknown=3, NotChecked=0, Total=650 [2024-11-17 07:56:33,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 104 [2024-11-17 07:56:33,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 1080 flow. Second operand has 26 states, 26 states have (on average 21.192307692307693) internal successors, (551), 26 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:33,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:33,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 104 [2024-11-17 07:56:33,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:46,875 INFO L124 PetriNetUnfolderBase]: 54107/85909 cut-off events. [2024-11-17 07:56:46,875 INFO L125 PetriNetUnfolderBase]: For 97128/97128 co-relation queries the response was YES. [2024-11-17 07:56:47,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253157 conditions, 85909 events. 54107/85909 cut-off events. For 97128/97128 co-relation queries the response was YES. Maximal size of possible extension queue 3009. Compared 741985 event pairs, 32724 based on Foata normal form. 292/65042 useless extension candidates. Maximal degree in co-relation 253009. Up to 19779 conditions per place. [2024-11-17 07:56:47,750 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 298 selfloop transitions, 74 changer transitions 0/389 dead transitions. [2024-11-17 07:56:47,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 389 transitions, 3006 flow [2024-11-17 07:56:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-17 07:56:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-17 07:56:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 910 transitions. [2024-11-17 07:56:47,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2734375 [2024-11-17 07:56:47,752 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 1080 flow. Second operand 32 states and 910 transitions. [2024-11-17 07:56:47,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 389 transitions, 3006 flow [2024-11-17 07:56:48,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 389 transitions, 2913 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-17 07:56:48,089 INFO L231 Difference]: Finished difference. Result has 189 places, 181 transitions, 1422 flow [2024-11-17 07:56:48,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1422, PETRI_PLACES=189, PETRI_TRANSITIONS=181} [2024-11-17 07:56:48,090 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 90 predicate places. [2024-11-17 07:56:48,090 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 181 transitions, 1422 flow [2024-11-17 07:56:48,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 21.192307692307693) internal successors, (551), 26 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:48,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:48,091 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:48,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:48,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 07:56:48,292 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-17 07:56:48,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash -391898222, now seen corresponding path program 1 times [2024-11-17 07:56:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:48,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713253450] [2024-11-17 07:56:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:56:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:48,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713253450] [2024-11-17 07:56:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713253450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:48,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:56:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596761875] [2024-11-17 07:56:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:48,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:48,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-11-17 07:56:48,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 181 transitions, 1422 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:48,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:48,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-11-17 07:56:48,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand