./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-min.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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:28:08,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:28:09,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:28:09,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:28:09,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:28:09,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:28:09,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:28:09,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:28:09,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:28:09,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:28:09,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:28:09,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:28:09,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:28:09,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:28:09,035 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:28:09,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:28:09,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:28:09,035 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:28:09,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:28:09,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:28:09,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:28:09,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:28:09,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:28:09,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:28:09,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:28:09,037 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:28:09,037 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:28:09,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:28:09,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:28:09,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:28:09,038 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:28:09,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:28:09,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:28:09,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:28:09,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:09,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:28:09,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:28:09,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:28:09,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:28:09,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:28:09,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:28:09,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:28:09,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:28:09,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:28:09,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2024-11-10 22:28:09,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:28:09,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:28:09,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:28:09,239 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:28:09,240 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:28:09,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2024-11-10 22:28:10,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:28:10,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:28:10,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2024-11-10 22:28:10,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3fefcb4/6cbb85c1c988416b8562eef6f4321c5b/FLAG3e676c28c [2024-11-10 22:28:10,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3fefcb4/6cbb85c1c988416b8562eef6f4321c5b [2024-11-10 22:28:10,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:28:10,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:28:10,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:10,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:28:10,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:28:10,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:10" (1/1) ... [2024-11-10 22:28:10,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37740139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:10, skipping insertion in model container [2024-11-10 22:28:10,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:10" (1/1) ... [2024-11-10 22:28:10,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:28:11,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:11,213 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:28:11,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:11,254 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:28:11,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11 WrapperNode [2024-11-10 22:28:11,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:11,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:11,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:28:11,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:28:11,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,291 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 272 [2024-11-10 22:28:11,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:11,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:28:11,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:28:11,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:28:11,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,322 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-10 22:28:11,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,333 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:28:11,345 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:28:11,345 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:28:11,345 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:28:11,346 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (1/1) ... [2024-11-10 22:28:11,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:11,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:28:11,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:28:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:28:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:28:11,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:28:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:28:11,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:28:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:28:11,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:28:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:28:11,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:28:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:28:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:28:11,408 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:28:11,494 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:28:11,496 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:28:11,906 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:28:11,907 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:28:12,215 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:28:12,216 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:28:12,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:12 BoogieIcfgContainer [2024-11-10 22:28:12,217 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:28:12,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:28:12,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:28:12,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:28:12,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:10" (1/3) ... [2024-11-10 22:28:12,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43566cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:12, skipping insertion in model container [2024-11-10 22:28:12,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:11" (2/3) ... [2024-11-10 22:28:12,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43566cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:12, skipping insertion in model container [2024-11-10 22:28:12,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:12" (3/3) ... [2024-11-10 22:28:12,224 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-11-10 22:28:12,237 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:28:12,237 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-10 22:28:12,237 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:28:12,306 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:28:12,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 123 transitions, 267 flow [2024-11-10 22:28:12,365 INFO L124 PetriNetUnfolderBase]: 17/120 cut-off events. [2024-11-10 22:28:12,365 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:28:12,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 17/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 277 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-10 22:28:12,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 123 transitions, 267 flow [2024-11-10 22:28:12,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 119 transitions, 256 flow [2024-11-10 22:28:12,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:28:12,386 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;@75839deb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:28:12,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-10 22:28:12,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:28:12,403 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:28:12,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:28:12,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:12,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:28:12,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:12,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash 29145437, now seen corresponding path program 1 times [2024-11-10 22:28:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932563621] [2024-11-10 22:28:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932563621] [2024-11-10 22:28:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932563621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:12,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:12,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:12,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913792559] [2024-11-10 22:28:12,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:12,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:12,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-11-10 22:28:12,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:12,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:12,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-11-10 22:28:12,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:13,174 INFO L124 PetriNetUnfolderBase]: 1414/2476 cut-off events. [2024-11-10 22:28:13,175 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-10 22:28:13,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 2476 events. 1414/2476 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16214 event pairs, 1094 based on Foata normal form. 290/2056 useless extension candidates. Maximal degree in co-relation 4038. Up to 1947 conditions per place. [2024-11-10 22:28:13,196 INFO L140 encePairwiseOnDemand]: 99/123 looper letters, 53 selfloop transitions, 10 changer transitions 0/120 dead transitions. [2024-11-10 22:28:13,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 384 flow [2024-11-10 22:28:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2024-11-10 22:28:13,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-11-10 22:28:13,213 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 256 flow. Second operand 4 states and 320 transitions. [2024-11-10 22:28:13,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 384 flow [2024-11-10 22:28:13,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 22:28:13,225 INFO L231 Difference]: Finished difference. Result has 110 places, 120 transitions, 316 flow [2024-11-10 22:28:13,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=110, PETRI_TRANSITIONS=120} [2024-11-10 22:28:13,229 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2024-11-10 22:28:13,229 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 120 transitions, 316 flow [2024-11-10 22:28:13,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:13,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:13,230 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:28:13,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:28:13,230 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:13,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -111617957, now seen corresponding path program 1 times [2024-11-10 22:28:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371597324] [2024-11-10 22:28:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371597324] [2024-11-10 22:28:13,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371597324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395199754] [2024-11-10 22:28:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:13,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:13,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:28:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:13,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:13,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:13,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395199754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:28:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937570808] [2024-11-10 22:28:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:13,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:28:13,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-11-10 22:28:13,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 120 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:13,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:13,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-11-10 22:28:13,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:13,848 INFO L124 PetriNetUnfolderBase]: 1414/2473 cut-off events. [2024-11-10 22:28:13,848 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-10 22:28:13,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 2473 events. 1414/2473 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16108 event pairs, 1094 based on Foata normal form. 3/1766 useless extension candidates. Maximal degree in co-relation 4427. Up to 1932 conditions per place. [2024-11-10 22:28:13,862 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 43 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2024-11-10 22:28:13,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 117 transitions, 424 flow [2024-11-10 22:28:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2024-11-10 22:28:13,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2024-11-10 22:28:13,866 INFO L175 Difference]: Start difference. First operand has 110 places, 120 transitions, 316 flow. Second operand 6 states and 423 transitions. [2024-11-10 22:28:13,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 117 transitions, 424 flow [2024-11-10 22:28:13,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:13,871 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 338 flow [2024-11-10 22:28:13,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2024-11-10 22:28:13,873 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 0 predicate places. [2024-11-10 22:28:13,873 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 338 flow [2024-11-10 22:28:13,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:13,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:13,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:28:13,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:28:14,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:14,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:14,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 834811448, now seen corresponding path program 1 times [2024-11-10 22:28:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:14,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645133067] [2024-11-10 22:28:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645133067] [2024-11-10 22:28:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645133067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140725410] [2024-11-10 22:28:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:14,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:14,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:14,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:14,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:28:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:14,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:14,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:14,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140725410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:14,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:28:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163745934] [2024-11-10 22:28:14,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:14,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:14,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-11-10 22:28:14,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 338 flow. Second operand has 12 states, 12 states have (on average 61.083333333333336) internal successors, (733), 12 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:14,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:14,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-11-10 22:28:14,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:14,727 INFO L124 PetriNetUnfolderBase]: 1423/2527 cut-off events. [2024-11-10 22:28:14,727 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-10 22:28:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 conditions, 2527 events. 1423/2527 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16465 event pairs, 1094 based on Foata normal form. 9/1829 useless extension candidates. Maximal degree in co-relation 4429. Up to 1947 conditions per place. [2024-11-10 22:28:14,739 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 50 selfloop transitions, 37 changer transitions 0/144 dead transitions. [2024-11-10 22:28:14,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 144 transitions, 686 flow [2024-11-10 22:28:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 696 transitions. [2024-11-10 22:28:14,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658536585365853 [2024-11-10 22:28:14,742 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 338 flow. Second operand 10 states and 696 transitions. [2024-11-10 22:28:14,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 144 transitions, 686 flow [2024-11-10 22:28:14,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 603 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:14,748 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 553 flow [2024-11-10 22:28:14,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=553, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2024-11-10 22:28:14,750 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 7 predicate places. [2024-11-10 22:28:14,750 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 553 flow [2024-11-10 22:28:14,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.083333333333336) internal successors, (733), 12 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:14,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:14,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:14,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:14,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:28:14,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:14,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1346781728, now seen corresponding path program 1 times [2024-11-10 22:28:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313558488] [2024-11-10 22:28:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:15,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:15,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313558488] [2024-11-10 22:28:15,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313558488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968381650] [2024-11-10 22:28:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:15,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:15,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-11-10 22:28:15,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:15,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-11-10 22:28:15,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:15,310 INFO L124 PetriNetUnfolderBase]: 1424/2544 cut-off events. [2024-11-10 22:28:15,311 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-10 22:28:15,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 2544 events. 1424/2544 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16602 event pairs, 1094 based on Foata normal form. 4/1837 useless extension candidates. Maximal degree in co-relation 4614. Up to 1971 conditions per place. [2024-11-10 22:28:15,321 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 88 selfloop transitions, 13 changer transitions 0/149 dead transitions. [2024-11-10 22:28:15,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 149 transitions, 765 flow [2024-11-10 22:28:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-10 22:28:15,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 22:28:15,323 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 553 flow. Second operand 4 states and 287 transitions. [2024-11-10 22:28:15,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 149 transitions, 765 flow [2024-11-10 22:28:15,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 728 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:15,327 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 592 flow [2024-11-10 22:28:15,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-11-10 22:28:15,330 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2024-11-10 22:28:15,330 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 592 flow [2024-11-10 22:28:15,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:15,330 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:15,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:28:15,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:15,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1199440195, now seen corresponding path program 1 times [2024-11-10 22:28:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:15,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110679198] [2024-11-10 22:28:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:15,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110679198] [2024-11-10 22:28:15,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110679198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:15,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:15,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:15,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925251833] [2024-11-10 22:28:15,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:15,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:15,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-11-10 22:28:15,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:15,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-11-10 22:28:15,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:15,622 INFO L124 PetriNetUnfolderBase]: 1423/2542 cut-off events. [2024-11-10 22:28:15,622 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-10 22:28:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4733 conditions, 2542 events. 1423/2542 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16570 event pairs, 1094 based on Foata normal form. 1/1838 useless extension candidates. Maximal degree in co-relation 4626. Up to 1992 conditions per place. [2024-11-10 22:28:15,634 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 87 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-11-10 22:28:15,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 146 transitions, 766 flow [2024-11-10 22:28:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-10 22:28:15,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-10 22:28:15,636 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 592 flow. Second operand 3 states and 243 transitions. [2024-11-10 22:28:15,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 146 transitions, 766 flow [2024-11-10 22:28:15,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 766 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:15,644 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 596 flow [2024-11-10 22:28:15,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2024-11-10 22:28:15,644 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2024-11-10 22:28:15,644 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 596 flow [2024-11-10 22:28:15,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:15,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:15,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:28:15,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:15,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 461496325, now seen corresponding path program 1 times [2024-11-10 22:28:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336898208] [2024-11-10 22:28:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336898208] [2024-11-10 22:28:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336898208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:15,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:15,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:15,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888947359] [2024-11-10 22:28:15,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:15,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:15,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:15,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-11-10 22:28:15,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:15,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-11-10 22:28:15,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:16,003 INFO L124 PetriNetUnfolderBase]: 1421/2533 cut-off events. [2024-11-10 22:28:16,003 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-10 22:28:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 2533 events. 1421/2533 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16329 event pairs, 1094 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 4696. Up to 1977 conditions per place. [2024-11-10 22:28:16,020 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 75 selfloop transitions, 12 changer transitions 0/144 dead transitions. [2024-11-10 22:28:16,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 144 transitions, 757 flow [2024-11-10 22:28:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2024-11-10 22:28:16,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6321138211382114 [2024-11-10 22:28:16,022 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 596 flow. Second operand 4 states and 311 transitions. [2024-11-10 22:28:16,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 144 transitions, 757 flow [2024-11-10 22:28:16,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 144 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:16,025 INFO L231 Difference]: Finished difference. Result has 126 places, 144 transitions, 609 flow [2024-11-10 22:28:16,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=126, PETRI_TRANSITIONS=144} [2024-11-10 22:28:16,027 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 14 predicate places. [2024-11-10 22:28:16,027 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 144 transitions, 609 flow [2024-11-10 22:28:16,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:16,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:16,028 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:28:16,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:28:16,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:16,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1341238658, now seen corresponding path program 2 times [2024-11-10 22:28:16,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:16,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447437675] [2024-11-10 22:28:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:16,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447437675] [2024-11-10 22:28:16,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447437675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459209343] [2024-11-10 22:28:16,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:16,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:16,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:16,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:28:16,213 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:16,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:16,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:16,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:16,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:16,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459209343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:16,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:28:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401202196] [2024-11-10 22:28:16,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:16,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:16,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:16,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 123 [2024-11-10 22:28:16,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 144 transitions, 609 flow. Second operand has 14 states, 14 states have (on average 58.142857142857146) internal successors, (814), 14 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:16,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:16,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 123 [2024-11-10 22:28:16,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:16,855 INFO L124 PetriNetUnfolderBase]: 1424/2550 cut-off events. [2024-11-10 22:28:16,855 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-10 22:28:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4791 conditions, 2550 events. 1424/2550 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16462 event pairs, 1094 based on Foata normal form. 4/1851 useless extension candidates. Maximal degree in co-relation 4674. Up to 1950 conditions per place. [2024-11-10 22:28:16,864 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 55 selfloop transitions, 55 changer transitions 0/164 dead transitions. [2024-11-10 22:28:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 164 transitions, 934 flow [2024-11-10 22:28:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:28:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:28:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1479 transitions. [2024-11-10 22:28:16,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5010162601626016 [2024-11-10 22:28:16,867 INFO L175 Difference]: Start difference. First operand has 126 places, 144 transitions, 609 flow. Second operand 24 states and 1479 transitions. [2024-11-10 22:28:16,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 164 transitions, 934 flow [2024-11-10 22:28:16,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 164 transitions, 906 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:16,871 INFO L231 Difference]: Finished difference. Result has 148 places, 160 transitions, 815 flow [2024-11-10 22:28:16,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=815, PETRI_PLACES=148, PETRI_TRANSITIONS=160} [2024-11-10 22:28:16,873 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 36 predicate places. [2024-11-10 22:28:16,873 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 160 transitions, 815 flow [2024-11-10 22:28:16,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 58.142857142857146) internal successors, (814), 14 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:16,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:16,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:16,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:28:17,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:17,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1891208622, now seen corresponding path program 1 times [2024-11-10 22:28:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94861370] [2024-11-10 22:28:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94861370] [2024-11-10 22:28:17,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94861370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806406397] [2024-11-10 22:28:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:17,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:17,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:17,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:28:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 22:28:17,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:17,507 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 [2024-11-10 22:28:17,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:28:17,588 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:28:17,590 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 [2024-11-10 22:28:17,601 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 [2024-11-10 22:28:17,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-10 22:28:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:17,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:17,717 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 [2024-11-10 22:28:17,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:17,726 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 [2024-11-10 22:28:17,731 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 [2024-11-10 22:28:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806406397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:17,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 22:28:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193574076] [2024-11-10 22:28:17,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:17,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2024-11-10 22:28:17,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 123 [2024-11-10 22:28:17,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 160 transitions, 815 flow. Second operand has 14 states, 14 states have (on average 47.285714285714285) internal successors, (662), 14 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:17,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:17,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 123 [2024-11-10 22:28:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:18,306 INFO L124 PetriNetUnfolderBase]: 1422/2553 cut-off events. [2024-11-10 22:28:18,306 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-11-10 22:28:18,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4884 conditions, 2553 events. 1422/2553 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16431 event pairs, 1094 based on Foata normal form. 0/1848 useless extension candidates. Maximal degree in co-relation 4792. Up to 1931 conditions per place. [2024-11-10 22:28:18,319 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 103 selfloop transitions, 27 changer transitions 0/168 dead transitions. [2024-11-10 22:28:18,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 168 transitions, 1091 flow [2024-11-10 22:28:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:28:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:28:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 579 transitions. [2024-11-10 22:28:18,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4279379157427938 [2024-11-10 22:28:18,320 INFO L175 Difference]: Start difference. First operand has 148 places, 160 transitions, 815 flow. Second operand 11 states and 579 transitions. [2024-11-10 22:28:18,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 168 transitions, 1091 flow [2024-11-10 22:28:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 168 transitions, 964 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-10 22:28:18,347 INFO L231 Difference]: Finished difference. Result has 147 places, 159 transitions, 740 flow [2024-11-10 22:28:18,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=740, PETRI_PLACES=147, PETRI_TRANSITIONS=159} [2024-11-10 22:28:18,348 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 35 predicate places. [2024-11-10 22:28:18,349 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 159 transitions, 740 flow [2024-11-10 22:28:18,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.285714285714285) internal successors, (662), 14 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:18,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:18,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:18,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:28:18,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:18,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:18,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1502123863, now seen corresponding path program 1 times [2024-11-10 22:28:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913198230] [2024-11-10 22:28:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913198230] [2024-11-10 22:28:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913198230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711127776] [2024-11-10 22:28:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:18,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:18,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:18,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:18,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:28:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:18,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 22:28:18,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:18,882 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 [2024-11-10 22:28:18,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:28:18,915 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:28:18,916 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 [2024-11-10 22:28:18,924 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 [2024-11-10 22:28:18,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 22:28:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:18,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:18,963 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_127 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_127) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2024-11-10 22:28:19,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:19,007 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 [2024-11-10 22:28:19,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:19,014 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 [2024-11-10 22:28:19,017 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 [2024-11-10 22:28:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2024-11-10 22:28:19,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711127776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:19,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:19,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 22:28:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790487230] [2024-11-10 22:28:19,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:19,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 22:28:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:28:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2024-11-10 22:28:19,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 123 [2024-11-10 22:28:19,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 159 transitions, 740 flow. Second operand has 13 states, 13 states have (on average 47.23076923076923) internal successors, (614), 13 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:19,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:19,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 123 [2024-11-10 22:28:19,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:19,574 INFO L124 PetriNetUnfolderBase]: 1422/2552 cut-off events. [2024-11-10 22:28:19,574 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-11-10 22:28:19,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 2552 events. 1422/2552 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16411 event pairs, 1094 based on Foata normal form. 1/1849 useless extension candidates. Maximal degree in co-relation 4764. Up to 1935 conditions per place. [2024-11-10 22:28:19,585 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 96 selfloop transitions, 28 changer transitions 0/162 dead transitions. [2024-11-10 22:28:19,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 162 transitions, 992 flow [2024-11-10 22:28:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:28:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:28:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 571 transitions. [2024-11-10 22:28:19,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4220251293422025 [2024-11-10 22:28:19,587 INFO L175 Difference]: Start difference. First operand has 147 places, 159 transitions, 740 flow. Second operand 11 states and 571 transitions. [2024-11-10 22:28:19,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 162 transitions, 992 flow [2024-11-10 22:28:19,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 162 transitions, 964 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:28:19,590 INFO L231 Difference]: Finished difference. Result has 152 places, 158 transitions, 764 flow [2024-11-10 22:28:19,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=152, PETRI_TRANSITIONS=158} [2024-11-10 22:28:19,591 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 40 predicate places. [2024-11-10 22:28:19,591 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 158 transitions, 764 flow [2024-11-10 22:28:19,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.23076923076923) internal successors, (614), 13 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:19,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:19,592 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:19,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:28:19,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:19,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:19,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 678803629, now seen corresponding path program 1 times [2024-11-10 22:28:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670573014] [2024-11-10 22:28:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670573014] [2024-11-10 22:28:20,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670573014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519290519] [2024-11-10 22:28:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:20,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:20,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:20,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:20,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:28:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:20,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 22:28:20,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:20,149 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 [2024-11-10 22:28:20,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:28:20,190 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 22:28:20,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-10 22:28:20,205 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 [2024-11-10 22:28:20,230 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:28:20,230 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 [2024-11-10 22:28:20,246 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 [2024-11-10 22:28:20,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-10 22:28:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:20,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:20,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:20,477 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 27 treesize of output 28 [2024-11-10 22:28:20,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:20,484 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 143 treesize of output 135 [2024-11-10 22:28:20,490 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 27 treesize of output 25 [2024-11-10 22:28:20,499 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 28 treesize of output 24 [2024-11-10 22:28:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519290519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:20,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-10 22:28:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846630243] [2024-11-10 22:28:20,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:20,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:28:20,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:28:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=247, Unknown=8, NotChecked=0, Total=306 [2024-11-10 22:28:24,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:28,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:32,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:36,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:40,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:44,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:48,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:52,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:52,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 123 [2024-11-10 22:28:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 158 transitions, 764 flow. Second operand has 18 states, 18 states have (on average 42.888888888888886) internal successors, (772), 18 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 123 [2024-11-10 22:28:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:53,705 INFO L124 PetriNetUnfolderBase]: 1421/2548 cut-off events. [2024-11-10 22:28:53,705 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-11-10 22:28:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 2548 events. 1421/2548 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16398 event pairs, 1094 based on Foata normal form. 1/1848 useless extension candidates. Maximal degree in co-relation 4774. Up to 1932 conditions per place. [2024-11-10 22:28:53,717 INFO L140 encePairwiseOnDemand]: 103/123 looper letters, 98 selfloop transitions, 31 changer transitions 0/163 dead transitions. [2024-11-10 22:28:53,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 163 transitions, 1030 flow [2024-11-10 22:28:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:28:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:28:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 663 transitions. [2024-11-10 22:28:53,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38501742160278746 [2024-11-10 22:28:53,719 INFO L175 Difference]: Start difference. First operand has 152 places, 158 transitions, 764 flow. Second operand 14 states and 663 transitions. [2024-11-10 22:28:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 163 transitions, 1030 flow [2024-11-10 22:28:53,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 972 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 22:28:53,723 INFO L231 Difference]: Finished difference. Result has 156 places, 157 transitions, 776 flow [2024-11-10 22:28:53,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=776, PETRI_PLACES=156, PETRI_TRANSITIONS=157} [2024-11-10 22:28:53,724 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 44 predicate places. [2024-11-10 22:28:53,724 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 157 transitions, 776 flow [2024-11-10 22:28:53,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.888888888888886) internal successors, (772), 18 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:53,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:53,725 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:53,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:28:53,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:53,926 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:53,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -431923101, now seen corresponding path program 1 times [2024-11-10 22:28:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539139149] [2024-11-10 22:28:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539139149] [2024-11-10 22:28:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539139149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992963884] [2024-11-10 22:28:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:54,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:54,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:28:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:54,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 22:28:54,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:54,288 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 [2024-11-10 22:28:54,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:28:54,344 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 22:28:54,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-10 22:28:54,358 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 [2024-11-10 22:28:54,383 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:28:54,383 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 [2024-11-10 22:28:54,395 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 [2024-11-10 22:28:54,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 22:28:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:54,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:54,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:54,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-10 22:28:54,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:54,632 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 125 treesize of output 117 [2024-11-10 22:28:54,637 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 23 treesize of output 21 [2024-11-10 22:28:54,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-10 22:28:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992963884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:54,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-10 22:28:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552801715] [2024-11-10 22:28:54,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:54,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:28:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:28:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=317, Unknown=4, NotChecked=0, Total=380 [2024-11-10 22:28:55,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 123 [2024-11-10 22:28:55,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 157 transitions, 776 flow. Second operand has 20 states, 20 states have (on average 42.9) internal successors, (858), 20 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:55,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:55,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 123 [2024-11-10 22:28:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:56,497 INFO L124 PetriNetUnfolderBase]: 1421/2548 cut-off events. [2024-11-10 22:28:56,497 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-11-10 22:28:56,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 2548 events. 1421/2548 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16424 event pairs, 1094 based on Foata normal form. 4/1853 useless extension candidates. Maximal degree in co-relation 4803. Up to 1936 conditions per place. [2024-11-10 22:28:56,508 INFO L140 encePairwiseOnDemand]: 102/123 looper letters, 92 selfloop transitions, 35 changer transitions 1/162 dead transitions. [2024-11-10 22:28:56,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 162 transitions, 1054 flow [2024-11-10 22:28:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:28:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:28:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 779 transitions. [2024-11-10 22:28:56,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-11-10 22:28:56,512 INFO L175 Difference]: Start difference. First operand has 156 places, 157 transitions, 776 flow. Second operand 17 states and 779 transitions. [2024-11-10 22:28:56,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 162 transitions, 1054 flow [2024-11-10 22:28:56,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 994 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:56,516 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 815 flow [2024-11-10 22:28:56,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=815, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-11-10 22:28:56,516 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 53 predicate places. [2024-11-10 22:28:56,516 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 815 flow [2024-11-10 22:28:56,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 42.9) internal successors, (858), 20 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:56,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:56,517 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:56,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:28:56,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:56,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:56,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 979598099, now seen corresponding path program 1 times [2024-11-10 22:28:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616434137] [2024-11-10 22:28:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616434137] [2024-11-10 22:28:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616434137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:56,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:56,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836202365] [2024-11-10 22:28:56,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:56,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:56,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-11-10 22:28:56,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 815 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:56,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:56,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-11-10 22:28:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:57,046 INFO L124 PetriNetUnfolderBase]: 1421/2545 cut-off events. [2024-11-10 22:28:57,047 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-11-10 22:28:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 2545 events. 1421/2545 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 16316 event pairs, 1094 based on Foata normal form. 3/1853 useless extension candidates. Maximal degree in co-relation 4822. Up to 1983 conditions per place. [2024-11-10 22:28:57,058 INFO L140 encePairwiseOnDemand]: 114/123 looper letters, 93 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-11-10 22:28:57,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 157 transitions, 1003 flow [2024-11-10 22:28:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-10 22:28:57,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5589430894308943 [2024-11-10 22:28:57,060 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 815 flow. Second operand 4 states and 275 transitions. [2024-11-10 22:28:57,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 157 transitions, 1003 flow [2024-11-10 22:28:57,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 157 transitions, 929 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-10 22:28:57,063 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 743 flow [2024-11-10 22:28:57,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=743, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2024-11-10 22:28:57,064 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2024-11-10 22:28:57,064 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 743 flow [2024-11-10 22:28:57,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:57,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:57,064 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:57,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:28:57,064 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:57,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1961509092, now seen corresponding path program 1 times [2024-11-10 22:28:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326625437] [2024-11-10 22:28:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:57,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:57,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326625437] [2024-11-10 22:28:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326625437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789136901] [2024-11-10 22:28:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:57,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:57,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:57,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:28:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:57,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:28:57,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:57,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789136901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:57,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:28:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235495304] [2024-11-10 22:28:57,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:57,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:28:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:28:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:57,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 123 [2024-11-10 22:28:57,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 743 flow. Second operand has 22 states, 22 states have (on average 58.36363636363637) internal successors, (1284), 22 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:57,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:57,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 123 [2024-11-10 22:28:57,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:58,383 INFO L124 PetriNetUnfolderBase]: 2826/4999 cut-off events. [2024-11-10 22:28:58,383 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-10 22:28:58,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9365 conditions, 4999 events. 2826/4999 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 34249 event pairs, 2188 based on Foata normal form. 2/3696 useless extension candidates. Maximal degree in co-relation 9310. Up to 1957 conditions per place. [2024-11-10 22:28:58,403 INFO L140 encePairwiseOnDemand]: 110/123 looper letters, 92 selfloop transitions, 70 changer transitions 0/210 dead transitions. [2024-11-10 22:28:58,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 210 transitions, 1281 flow [2024-11-10 22:28:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 22:28:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 22:28:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 860 transitions. [2024-11-10 22:28:58,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378361475922452 [2024-11-10 22:28:58,405 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 743 flow. Second operand 13 states and 860 transitions. [2024-11-10 22:28:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 210 transitions, 1281 flow [2024-11-10 22:28:58,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 210 transitions, 1256 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:58,409 INFO L231 Difference]: Finished difference. Result has 164 places, 166 transitions, 935 flow [2024-11-10 22:28:58,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=935, PETRI_PLACES=164, PETRI_TRANSITIONS=166} [2024-11-10 22:28:58,410 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 52 predicate places. [2024-11-10 22:28:58,410 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 166 transitions, 935 flow [2024-11-10 22:28:58,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 58.36363636363637) internal successors, (1284), 22 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:58,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:58,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:58,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:58,611 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,SelfDestructingSolverStorable12 [2024-11-10 22:28:58,612 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:58,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1908606214, now seen corresponding path program 1 times [2024-11-10 22:28:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502423234] [2024-11-10 22:28:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502423234] [2024-11-10 22:28:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502423234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:58,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287236366] [2024-11-10 22:28:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:58,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:58,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-11-10 22:28:58,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 166 transitions, 935 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:58,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:58,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-11-10 22:28:58,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:59,531 INFO L124 PetriNetUnfolderBase]: 5706/9997 cut-off events. [2024-11-10 22:28:59,531 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-11-10 22:28:59,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18405 conditions, 9997 events. 5706/9997 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 76642 event pairs, 3342 based on Foata normal form. 284/7595 useless extension candidates. Maximal degree in co-relation 18352. Up to 6013 conditions per place. [2024-11-10 22:28:59,572 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 143 selfloop transitions, 4 changer transitions 0/209 dead transitions. [2024-11-10 22:28:59,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 209 transitions, 1319 flow [2024-11-10 22:28:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2024-11-10 22:28:59,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7134146341463414 [2024-11-10 22:28:59,573 INFO L175 Difference]: Start difference. First operand has 164 places, 166 transitions, 935 flow. Second operand 4 states and 351 transitions. [2024-11-10 22:28:59,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 209 transitions, 1319 flow [2024-11-10 22:28:59,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 209 transitions, 1277 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:59,577 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 922 flow [2024-11-10 22:28:59,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=922, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2024-11-10 22:28:59,578 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2024-11-10 22:28:59,578 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 922 flow [2024-11-10 22:28:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:59,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:59,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:59,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:28:59,579 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:28:59,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1005239672, now seen corresponding path program 1 times [2024-11-10 22:28:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075273772] [2024-11-10 22:28:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075273772] [2024-11-10 22:28:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075273772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794349269] [2024-11-10 22:28:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:59,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:59,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:28:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:59,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:28:59,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:59,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794349269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:59,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:59,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 22:28:59,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961114809] [2024-11-10 22:28:59,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:59,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:28:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:29:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:29:00,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 123 [2024-11-10 22:29:00,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 922 flow. Second operand has 15 states, 15 states have (on average 57.266666666666666) internal successors, (859), 15 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:00,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:00,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 123 [2024-11-10 22:29:00,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:00,845 INFO L124 PetriNetUnfolderBase]: 3464/5845 cut-off events. [2024-11-10 22:29:00,845 INFO L125 PetriNetUnfolderBase]: For 3015/3451 co-relation queries the response was YES. [2024-11-10 22:29:00,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13408 conditions, 5845 events. 3464/5845 cut-off events. For 3015/3451 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37054 event pairs, 2183 based on Foata normal form. 0/4785 useless extension candidates. Maximal degree in co-relation 13353. Up to 3360 conditions per place. [2024-11-10 22:29:00,866 INFO L140 encePairwiseOnDemand]: 106/123 looper letters, 137 selfloop transitions, 58 changer transitions 0/241 dead transitions. [2024-11-10 22:29:00,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 241 transitions, 1579 flow [2024-11-10 22:29:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:29:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:29:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2024-11-10 22:29:00,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5399728997289973 [2024-11-10 22:29:00,868 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 922 flow. Second operand 12 states and 797 transitions. [2024-11-10 22:29:00,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 241 transitions, 1579 flow [2024-11-10 22:29:00,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 241 transitions, 1567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:00,875 INFO L231 Difference]: Finished difference. Result has 179 places, 172 transitions, 1091 flow [2024-11-10 22:29:00,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1091, PETRI_PLACES=179, PETRI_TRANSITIONS=172} [2024-11-10 22:29:00,877 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 67 predicate places. [2024-11-10 22:29:00,877 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 172 transitions, 1091 flow [2024-11-10 22:29:00,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.266666666666666) internal successors, (859), 15 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:00,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:00,878 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:29:00,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:01,078 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 [2024-11-10 22:29:01,079 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:01,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2070800670, now seen corresponding path program 2 times [2024-11-10 22:29:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:01,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916551450] [2024-11-10 22:29:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:01,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916551450] [2024-11-10 22:29:01,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916551450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342517097] [2024-11-10 22:29:01,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:01,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:01,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:01,319 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:01,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:29:01,399 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:29:01,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:01,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:29:01,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:29:01,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:29:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342517097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:01,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-10 22:29:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887390207] [2024-11-10 22:29:01,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:01,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:29:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:29:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:29:01,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 123 [2024-11-10 22:29:01,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 172 transitions, 1091 flow. Second operand has 22 states, 22 states have (on average 58.27272727272727) internal successors, (1282), 22 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:01,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:01,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 123 [2024-11-10 22:29:01,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:03,170 INFO L124 PetriNetUnfolderBase]: 5028/8755 cut-off events. [2024-11-10 22:29:03,170 INFO L125 PetriNetUnfolderBase]: For 4736/5351 co-relation queries the response was YES. [2024-11-10 22:29:03,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19876 conditions, 8755 events. 5028/8755 cut-off events. For 4736/5351 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 60787 event pairs, 3899 based on Foata normal form. 4/7001 useless extension candidates. Maximal degree in co-relation 19802. Up to 3948 conditions per place. [2024-11-10 22:29:03,210 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 100 selfloop transitions, 81 changer transitions 0/230 dead transitions. [2024-11-10 22:29:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 230 transitions, 1722 flow [2024-11-10 22:29:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:29:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:29:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1338 transitions. [2024-11-10 22:29:03,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5180023228803716 [2024-11-10 22:29:03,212 INFO L175 Difference]: Start difference. First operand has 179 places, 172 transitions, 1091 flow. Second operand 21 states and 1338 transitions. [2024-11-10 22:29:03,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 230 transitions, 1722 flow [2024-11-10 22:29:03,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 230 transitions, 1598 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-10 22:29:03,220 INFO L231 Difference]: Finished difference. Result has 187 places, 183 transitions, 1234 flow [2024-11-10 22:29:03,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1234, PETRI_PLACES=187, PETRI_TRANSITIONS=183} [2024-11-10 22:29:03,220 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 75 predicate places. [2024-11-10 22:29:03,220 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 183 transitions, 1234 flow [2024-11-10 22:29:03,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 58.27272727272727) internal successors, (1282), 22 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:03,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:03,221 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:03,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:03,421 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 [2024-11-10 22:29:03,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -492821548, now seen corresponding path program 1 times [2024-11-10 22:29:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456290144] [2024-11-10 22:29:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:29:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456290144] [2024-11-10 22:29:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456290144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31236355] [2024-11-10 22:29:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:03,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:03,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:03,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:29:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:03,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:29:03,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:29:03,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:29:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31236355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:03,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:03,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 22:29:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930468244] [2024-11-10 22:29:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:03,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:29:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:29:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:29:03,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 123 [2024-11-10 22:29:03,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 183 transitions, 1234 flow. Second operand has 15 states, 15 states have (on average 58.2) internal successors, (873), 15 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:03,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:03,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 123 [2024-11-10 22:29:03,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:05,187 INFO L124 PetriNetUnfolderBase]: 6045/10063 cut-off events. [2024-11-10 22:29:05,187 INFO L125 PetriNetUnfolderBase]: For 4185/4703 co-relation queries the response was YES. [2024-11-10 22:29:05,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22120 conditions, 10063 events. 6045/10063 cut-off events. For 4185/4703 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 70690 event pairs, 3451 based on Foata normal form. 44/7914 useless extension candidates. Maximal degree in co-relation 22048. Up to 5950 conditions per place. [2024-11-10 22:29:05,235 INFO L140 encePairwiseOnDemand]: 106/123 looper letters, 133 selfloop transitions, 67 changer transitions 0/248 dead transitions. [2024-11-10 22:29:05,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 248 transitions, 1847 flow [2024-11-10 22:29:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:29:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:29:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 810 transitions. [2024-11-10 22:29:05,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2024-11-10 22:29:05,237 INFO L175 Difference]: Start difference. First operand has 187 places, 183 transitions, 1234 flow. Second operand 12 states and 810 transitions. [2024-11-10 22:29:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 248 transitions, 1847 flow [2024-11-10 22:29:05,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 248 transitions, 1652 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 22:29:05,247 INFO L231 Difference]: Finished difference. Result has 190 places, 186 transitions, 1236 flow [2024-11-10 22:29:05,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1236, PETRI_PLACES=190, PETRI_TRANSITIONS=186} [2024-11-10 22:29:05,247 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 78 predicate places. [2024-11-10 22:29:05,247 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 186 transitions, 1236 flow [2024-11-10 22:29:05,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 58.2) internal successors, (873), 15 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:05,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:05,248 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:05,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:05,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:29:05,449 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:05,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:05,449 INFO L85 PathProgramCache]: Analyzing trace with hash 797121066, now seen corresponding path program 1 times [2024-11-10 22:29:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457341627] [2024-11-10 22:29:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:05,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:29:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457341627] [2024-11-10 22:29:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457341627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895009348] [2024-11-10 22:29:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:05,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:05,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-11-10 22:29:05,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 186 transitions, 1236 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:05,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:05,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-11-10 22:29:05,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:07,240 INFO L124 PetriNetUnfolderBase]: 10268/17947 cut-off events. [2024-11-10 22:29:07,240 INFO L125 PetriNetUnfolderBase]: For 16608/17612 co-relation queries the response was YES. [2024-11-10 22:29:07,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41827 conditions, 17947 events. 10268/17947 cut-off events. For 16608/17612 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 140335 event pairs, 5103 based on Foata normal form. 284/14772 useless extension candidates. Maximal degree in co-relation 41717. Up to 9031 conditions per place. [2024-11-10 22:29:07,349 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 178 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2024-11-10 22:29:07,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 247 transitions, 1843 flow [2024-11-10 22:29:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2024-11-10 22:29:07,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7113821138211383 [2024-11-10 22:29:07,350 INFO L175 Difference]: Start difference. First operand has 190 places, 186 transitions, 1236 flow. Second operand 4 states and 350 transitions. [2024-11-10 22:29:07,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 247 transitions, 1843 flow [2024-11-10 22:29:07,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 247 transitions, 1759 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-10 22:29:07,367 INFO L231 Difference]: Finished difference. Result has 188 places, 188 transitions, 1174 flow [2024-11-10 22:29:07,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1174, PETRI_PLACES=188, PETRI_TRANSITIONS=188} [2024-11-10 22:29:07,368 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 76 predicate places. [2024-11-10 22:29:07,368 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 188 transitions, 1174 flow [2024-11-10 22:29:07,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:07,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:07,368 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:07,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 22:29:07,369 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:07,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash -547258697, now seen corresponding path program 1 times [2024-11-10 22:29:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:07,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566381035] [2024-11-10 22:29:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:07,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:29:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566381035] [2024-11-10 22:29:08,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566381035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243507027] [2024-11-10 22:29:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:08,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:08,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:08,212 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:08,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:29:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:08,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-10 22:29:08,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:08,320 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 [2024-11-10 22:29:08,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:29:08,423 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:29:08,424 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 [2024-11-10 22:29:08,437 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 [2024-11-10 22:29:08,459 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 [2024-11-10 22:29:08,510 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 22:29:08,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-10 22:29:08,601 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-10 22:29:08,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-10 22:29:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:08,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:08,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:08,820 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2024-11-10 22:29:08,825 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_5 (Array Int Int))) (or (< (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_5) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648) (< 2147483647 (select v_arrayElimArr_5 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2024-11-10 22:29:08,907 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_5 (Array Int Int)) (v_ArrVal_386 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_196| Int)) (or (< (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_386) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_196| v_arrayElimArr_5) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648) (< 2147483647 (select v_arrayElimArr_5 4)))) is different from false [2024-11-10 22:29:08,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:08,996 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 27 treesize of output 28 [2024-11-10 22:29:09,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:09,003 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 71 treesize of output 65 [2024-11-10 22:29:09,008 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 28 treesize of output 24 [2024-11-10 22:29:09,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:09,015 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 55 treesize of output 53 [2024-11-10 22:29:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2024-11-10 22:29:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243507027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:09,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2024-11-10 22:29:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279012774] [2024-11-10 22:29:09,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 22:29:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 22:29:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=594, Unknown=13, NotChecked=102, Total=812 [2024-11-10 22:29:09,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 123 [2024-11-10 22:29:09,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 188 transitions, 1174 flow. Second operand has 29 states, 29 states have (on average 54.06896551724138) internal successors, (1568), 29 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:09,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:09,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 123 [2024-11-10 22:29:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:12,839 INFO L124 PetriNetUnfolderBase]: 15390/24896 cut-off events. [2024-11-10 22:29:12,840 INFO L125 PetriNetUnfolderBase]: For 27694/30820 co-relation queries the response was YES. [2024-11-10 22:29:12,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64420 conditions, 24896 events. 15390/24896 cut-off events. For 27694/30820 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 190080 event pairs, 7192 based on Foata normal form. 545/22297 useless extension candidates. Maximal degree in co-relation 64306. Up to 11890 conditions per place. [2024-11-10 22:29:12,963 INFO L140 encePairwiseOnDemand]: 106/123 looper letters, 186 selfloop transitions, 51 changer transitions 0/281 dead transitions. [2024-11-10 22:29:12,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 281 transitions, 2044 flow [2024-11-10 22:29:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:29:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:29:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 923 transitions. [2024-11-10 22:29:12,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5002710027100271 [2024-11-10 22:29:12,965 INFO L175 Difference]: Start difference. First operand has 188 places, 188 transitions, 1174 flow. Second operand 15 states and 923 transitions. [2024-11-10 22:29:12,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 281 transitions, 2044 flow [2024-11-10 22:29:12,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 281 transitions, 2036 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:12,994 INFO L231 Difference]: Finished difference. Result has 203 places, 196 transitions, 1356 flow [2024-11-10 22:29:12,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1356, PETRI_PLACES=203, PETRI_TRANSITIONS=196} [2024-11-10 22:29:12,994 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 91 predicate places. [2024-11-10 22:29:12,994 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 196 transitions, 1356 flow [2024-11-10 22:29:12,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 54.06896551724138) internal successors, (1568), 29 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:12,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:12,995 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:13,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:29:13,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:13,200 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:13,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:13,200 INFO L85 PathProgramCache]: Analyzing trace with hash -547258701, now seen corresponding path program 2 times [2024-11-10 22:29:13,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:13,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272033928] [2024-11-10 22:29:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:13,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:13,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272033928] [2024-11-10 22:29:13,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272033928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:13,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455134533] [2024-11-10 22:29:13,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:13,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:13,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:13,772 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:13,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:29:13,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:29:13,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:13,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 22:29:13,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:13,891 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 [2024-11-10 22:29:13,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:29:13,991 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:29:13,992 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 [2024-11-10 22:29:14,003 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 [2024-11-10 22:29:14,021 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 [2024-11-10 22:29:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:29:14,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:14,133 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_428 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_428) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2024-11-10 22:29:14,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:14,197 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 [2024-11-10 22:29:14,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:14,205 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 43 treesize of output 37 [2024-11-10 22:29:14,209 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 9 [2024-11-10 22:29:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 6 not checked. [2024-11-10 22:29:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455134533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:14,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:14,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 26 [2024-11-10 22:29:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739256170] [2024-11-10 22:29:14,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:14,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 22:29:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 22:29:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=576, Unknown=1, NotChecked=48, Total=702 [2024-11-10 22:29:14,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-10 22:29:14,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 196 transitions, 1356 flow. Second operand has 27 states, 27 states have (on average 50.851851851851855) internal successors, (1373), 27 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:14,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:14,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-10 22:29:14,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:19,810 INFO L124 PetriNetUnfolderBase]: 27016/43851 cut-off events. [2024-11-10 22:29:19,810 INFO L125 PetriNetUnfolderBase]: For 49022/52306 co-relation queries the response was YES. [2024-11-10 22:29:19,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118208 conditions, 43851 events. 27016/43851 cut-off events. For 49022/52306 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 339360 event pairs, 7426 based on Foata normal form. 443/38663 useless extension candidates. Maximal degree in co-relation 118090. Up to 12600 conditions per place. [2024-11-10 22:29:20,111 INFO L140 encePairwiseOnDemand]: 101/123 looper letters, 188 selfloop transitions, 62 changer transitions 0/290 dead transitions. [2024-11-10 22:29:20,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 290 transitions, 2225 flow [2024-11-10 22:29:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:29:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:29:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1079 transitions. [2024-11-10 22:29:20,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4617030380830124 [2024-11-10 22:29:20,114 INFO L175 Difference]: Start difference. First operand has 203 places, 196 transitions, 1356 flow. Second operand 19 states and 1079 transitions. [2024-11-10 22:29:20,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 290 transitions, 2225 flow [2024-11-10 22:29:20,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 290 transitions, 2181 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:20,161 INFO L231 Difference]: Finished difference. Result has 219 places, 199 transitions, 1485 flow [2024-11-10 22:29:20,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1485, PETRI_PLACES=219, PETRI_TRANSITIONS=199} [2024-11-10 22:29:20,161 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 107 predicate places. [2024-11-10 22:29:20,161 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 199 transitions, 1485 flow [2024-11-10 22:29:20,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 50.851851851851855) internal successors, (1373), 27 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:20,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:20,162 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:20,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 22:29:20,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-10 22:29:20,362 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:20,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash -547258698, now seen corresponding path program 1 times [2024-11-10 22:29:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:20,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097747214] [2024-11-10 22:29:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:20,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:29:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097747214] [2024-11-10 22:29:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097747214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731312082] [2024-11-10 22:29:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:20,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:20,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:20,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:20,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:29:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:20,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 22:29:20,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:20,906 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 [2024-11-10 22:29:20,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:29:20,961 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:29:20,962 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 [2024-11-10 22:29:20,974 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 [2024-11-10 22:29:20,992 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 [2024-11-10 22:29:21,044 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 22:29:21,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-10 22:29:21,125 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-10 22:29:21,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-10 22:29:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:21,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:21,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:21,322 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-11-10 22:29:21,327 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_8 (Array Int Int))) (or (< (+ (select v_arrayElimArr_8 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) 0) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_8) c_~A~0.base) (+ c_~A~0.offset 4)))))) is different from false [2024-11-10 22:29:21,339 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_8 (Array Int Int))) (or (< (+ (select v_arrayElimArr_8 4) 2147483648) 0) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_8) c_~A~0.base) (+ c_~A~0.offset 4)))))) is different from false [2024-11-10 22:29:21,362 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_468 (Array Int Int)) (v_arrayElimArr_8 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_203| Int)) (or (< (+ (select v_arrayElimArr_8 4) 2147483648) 0) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_468) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_203| v_arrayElimArr_8) c_~A~0.base) (+ c_~A~0.offset 4)))))) is different from false [2024-11-10 22:29:21,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:21,450 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 29 treesize of output 30 [2024-11-10 22:29:21,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:21,457 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 81 treesize of output 75 [2024-11-10 22:29:21,462 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 32 treesize of output 28 [2024-11-10 22:29:21,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:21,470 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 65 treesize of output 63 [2024-11-10 22:29:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2024-11-10 22:29:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731312082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:21,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2024-11-10 22:29:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71018377] [2024-11-10 22:29:21,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 22:29:21,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:21,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 22:29:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=390, Unknown=3, NotChecked=126, Total=600 [2024-11-10 22:29:21,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 123 [2024-11-10 22:29:21,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 199 transitions, 1485 flow. Second operand has 25 states, 25 states have (on average 54.24) internal successors, (1356), 25 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:21,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:21,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 123 [2024-11-10 22:29:21,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:25,342 INFO L124 PetriNetUnfolderBase]: 14198/24822 cut-off events. [2024-11-10 22:29:25,342 INFO L125 PetriNetUnfolderBase]: For 41605/43168 co-relation queries the response was YES. [2024-11-10 22:29:25,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71453 conditions, 24822 events. 14198/24822 cut-off events. For 41605/43168 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 197732 event pairs, 6790 based on Foata normal form. 334/22008 useless extension candidates. Maximal degree in co-relation 71331. Up to 11890 conditions per place. [2024-11-10 22:29:25,488 INFO L140 encePairwiseOnDemand]: 108/123 looper letters, 184 selfloop transitions, 51 changer transitions 0/279 dead transitions. [2024-11-10 22:29:25,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 279 transitions, 2280 flow [2024-11-10 22:29:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:29:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:29:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 919 transitions. [2024-11-10 22:29:25,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4981029810298103 [2024-11-10 22:29:25,490 INFO L175 Difference]: Start difference. First operand has 219 places, 199 transitions, 1485 flow. Second operand 15 states and 919 transitions. [2024-11-10 22:29:25,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 279 transitions, 2280 flow [2024-11-10 22:29:25,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 279 transitions, 2214 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-10 22:29:25,528 INFO L231 Difference]: Finished difference. Result has 224 places, 198 transitions, 1517 flow [2024-11-10 22:29:25,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1517, PETRI_PLACES=224, PETRI_TRANSITIONS=198} [2024-11-10 22:29:25,529 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 112 predicate places. [2024-11-10 22:29:25,529 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 198 transitions, 1517 flow [2024-11-10 22:29:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 54.24) internal successors, (1356), 25 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:25,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:25,529 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:25,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 22:29:25,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:25,730 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:25,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash -547258700, now seen corresponding path program 1 times [2024-11-10 22:29:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397530006] [2024-11-10 22:29:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397530006] [2024-11-10 22:29:26,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397530006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008816671] [2024-11-10 22:29:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:26,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:26,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:26,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:26,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:29:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:26,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:29:26,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:26,325 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 [2024-11-10 22:29:26,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 22:29:26,410 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:29:26,410 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 [2024-11-10 22:29:26,433 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 [2024-11-10 22:29:26,444 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 [2024-11-10 22:29:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:29:26,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:26,531 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_512 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_512) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2024-11-10 22:29:26,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:26,591 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 [2024-11-10 22:29:26,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:26,598 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 37 treesize of output 31 [2024-11-10 22:29:26,601 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 7 [2024-11-10 22:29:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 6 not checked. [2024-11-10 22:29:26,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008816671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:26,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:26,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 27 [2024-11-10 22:29:26,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949810296] [2024-11-10 22:29:26,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:26,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:29:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:29:26,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=627, Unknown=1, NotChecked=50, Total=756 [2024-11-10 22:29:26,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-10 22:29:26,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 198 transitions, 1517 flow. Second operand has 28 states, 28 states have (on average 51.17857142857143) internal successors, (1433), 28 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:26,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:26,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-10 22:29:26,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:32,344 INFO L124 PetriNetUnfolderBase]: 25750/42356 cut-off events. [2024-11-10 22:29:32,345 INFO L125 PetriNetUnfolderBase]: For 68359/71079 co-relation queries the response was YES. [2024-11-10 22:29:32,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125562 conditions, 42356 events. 25750/42356 cut-off events. For 68359/71079 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 329591 event pairs, 7886 based on Foata normal form. 199/38005 useless extension candidates. Maximal degree in co-relation 125440. Up to 11802 conditions per place. [2024-11-10 22:29:32,738 INFO L140 encePairwiseOnDemand]: 100/123 looper letters, 181 selfloop transitions, 75 changer transitions 0/296 dead transitions. [2024-11-10 22:29:32,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 296 transitions, 2424 flow [2024-11-10 22:29:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:29:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:29:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1679 transitions. [2024-11-10 22:29:32,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4403356936795174 [2024-11-10 22:29:32,741 INFO L175 Difference]: Start difference. First operand has 224 places, 198 transitions, 1517 flow. Second operand 31 states and 1679 transitions. [2024-11-10 22:29:32,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 296 transitions, 2424 flow [2024-11-10 22:29:32,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 296 transitions, 2319 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-10 22:29:32,809 INFO L231 Difference]: Finished difference. Result has 243 places, 199 transitions, 1612 flow [2024-11-10 22:29:32,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1612, PETRI_PLACES=243, PETRI_TRANSITIONS=199} [2024-11-10 22:29:32,810 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 131 predicate places. [2024-11-10 22:29:32,810 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 199 transitions, 1612 flow [2024-11-10 22:29:32,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 51.17857142857143) internal successors, (1433), 28 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:32,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:32,811 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:32,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 22:29:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:33,011 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1540227391, now seen corresponding path program 2 times [2024-11-10 22:29:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415053715] [2024-11-10 22:29:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:33,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415053715] [2024-11-10 22:29:33,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415053715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225429400] [2024-11-10 22:29:33,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:33,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:33,087 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:33,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:29:33,195 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:29:33,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:33,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:33,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:33,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:29:33,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225429400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:33,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:29:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:29:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844321591] [2024-11-10 22:29:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:33,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:29:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:29:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:29:33,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-11-10 22:29:33,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 199 transitions, 1612 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:33,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:33,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-11-10 22:29:33,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:35,642 INFO L124 PetriNetUnfolderBase]: 10681/20494 cut-off events. [2024-11-10 22:29:35,642 INFO L125 PetriNetUnfolderBase]: For 45021/46121 co-relation queries the response was YES. [2024-11-10 22:29:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66270 conditions, 20494 events. 10681/20494 cut-off events. For 45021/46121 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 178373 event pairs, 2813 based on Foata normal form. 855/19439 useless extension candidates. Maximal degree in co-relation 66150. Up to 5555 conditions per place. [2024-11-10 22:29:35,767 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 222 selfloop transitions, 9 changer transitions 0/300 dead transitions. [2024-11-10 22:29:35,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 300 transitions, 2750 flow [2024-11-10 22:29:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:29:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:29:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2024-11-10 22:29:35,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7005420054200542 [2024-11-10 22:29:35,768 INFO L175 Difference]: Start difference. First operand has 243 places, 199 transitions, 1612 flow. Second operand 6 states and 517 transitions. [2024-11-10 22:29:35,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 300 transitions, 2750 flow [2024-11-10 22:29:35,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 300 transitions, 2601 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-10 22:29:35,828 INFO L231 Difference]: Finished difference. Result has 234 places, 198 transitions, 1501 flow [2024-11-10 22:29:35,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1501, PETRI_PLACES=234, PETRI_TRANSITIONS=198} [2024-11-10 22:29:35,829 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 122 predicate places. [2024-11-10 22:29:35,829 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 198 transitions, 1501 flow [2024-11-10 22:29:35,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:35,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:35,829 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:35,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 22:29:36,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-10 22:29:36,030 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:36,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1929564100, now seen corresponding path program 1 times [2024-11-10 22:29:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611433072] [2024-11-10 22:29:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:36,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611433072] [2024-11-10 22:29:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611433072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:36,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:36,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:29:36,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932831644] [2024-11-10 22:29:36,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:36,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:36,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:36,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:36,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-11-10 22:29:36,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 198 transitions, 1501 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:36,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:36,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-11-10 22:29:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:38,592 INFO L124 PetriNetUnfolderBase]: 12261/23002 cut-off events. [2024-11-10 22:29:38,592 INFO L125 PetriNetUnfolderBase]: For 62205/62975 co-relation queries the response was YES. [2024-11-10 22:29:38,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74058 conditions, 23002 events. 12261/23002 cut-off events. For 62205/62975 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 192861 event pairs, 6305 based on Foata normal form. 586/21947 useless extension candidates. Maximal degree in co-relation 73945. Up to 13708 conditions per place. [2024-11-10 22:29:38,931 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 158 selfloop transitions, 10 changer transitions 0/235 dead transitions. [2024-11-10 22:29:38,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 235 transitions, 2023 flow [2024-11-10 22:29:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-11-10 22:29:38,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6808943089430894 [2024-11-10 22:29:38,932 INFO L175 Difference]: Start difference. First operand has 234 places, 198 transitions, 1501 flow. Second operand 4 states and 335 transitions. [2024-11-10 22:29:38,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 235 transitions, 2023 flow [2024-11-10 22:29:38,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 235 transitions, 1966 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-10 22:29:38,973 INFO L231 Difference]: Finished difference. Result has 235 places, 199 transitions, 1519 flow [2024-11-10 22:29:38,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1519, PETRI_PLACES=235, PETRI_TRANSITIONS=199} [2024-11-10 22:29:38,974 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, 123 predicate places. [2024-11-10 22:29:38,974 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 199 transitions, 1519 flow [2024-11-10 22:29:38,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:38,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:38,974 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:38,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 22:29:38,974 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-10 22:29:38,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash 502409777, now seen corresponding path program 1 times [2024-11-10 22:29:38,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:38,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339105822] [2024-11-10 22:29:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:38,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:39,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339105822] [2024-11-10 22:29:39,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339105822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21609644] [2024-11-10 22:29:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:39,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:39,031 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:29:39,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 22:29:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:39,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:29:39,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:39,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:29:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21609644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:39,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:39,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:29:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521152812] [2024-11-10 22:29:39,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:39,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:29:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:39,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:29:39,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:29:39,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-11-10 22:29:39,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 199 transitions, 1519 flow. Second operand has 12 states, 12 states have (on average 66.25) internal successors, (795), 12 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:39,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:39,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-11-10 22:29:39,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand