./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:00:28,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:00:28,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:00:28,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:00:28,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:00:28,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:00:28,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:00:28,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:00:28,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:00:28,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:00:28,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:00:28,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:00:28,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:00:28,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:00:28,918 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:00:28,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:00:28,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:00:28,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:00:28,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:00:28,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:00:28,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:00:28,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:00:28,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:00:28,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:00:28,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:00:28,923 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:00:28,923 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:00:28,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:00:28,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:00:28,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:00:28,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:00:28,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:00:28,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:00:28,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:00:28,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:28,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:00:28,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:00:28,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:00:28,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:00:28,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:00:28,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:00:28,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:00:28,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:00:28,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:00:28,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2024-11-23 02:00:29,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:00:29,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:00:29,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:00:29,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:00:29,164 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:00:29,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-23 02:00:30,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:00:30,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:00:30,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-23 02:00:30,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec303559/46c1c46876c74b258ba504f395c8eac0/FLAG31c963b11 [2024-11-23 02:00:30,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec303559/46c1c46876c74b258ba504f395c8eac0 [2024-11-23 02:00:30,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:00:30,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:00:30,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:30,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:00:30,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:00:30,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:30" (1/1) ... [2024-11-23 02:00:30,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f7f511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:30, skipping insertion in model container [2024-11-23 02:00:30,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:30" (1/1) ... [2024-11-23 02:00:30,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:00:31,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:31,238 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:00:31,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:00:31,297 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:00:31,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31 WrapperNode [2024-11-23 02:00:31,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:00:31,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:31,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:00:31,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:00:31,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,340 INFO L138 Inliner]: procedures = 24, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-11-23 02:00:31,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:00:31,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:00:31,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:00:31,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:00:31,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,373 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-23 02:00:31,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:00:31,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:00:31,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:00:31,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:00:31,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (1/1) ... [2024-11-23 02:00:31,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:00:31,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:31,419 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) [2024-11-23 02:00:31,423 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 [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 02:00:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 02:00:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 02:00:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:00:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:00:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 02:00:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 02:00:31,460 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:00:31,549 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:00:31,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:00:31,774 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:00:31,774 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:00:31,920 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:00:31,920 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 02:00:31,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:31 BoogieIcfgContainer [2024-11-23 02:00:31,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:00:31,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:00:31,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:00:31,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:00:31,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:00:30" (1/3) ... [2024-11-23 02:00:31,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79060afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:31, skipping insertion in model container [2024-11-23 02:00:31,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:31" (2/3) ... [2024-11-23 02:00:31,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79060afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:00:31, skipping insertion in model container [2024-11-23 02:00:31,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:31" (3/3) ... [2024-11-23 02:00:31,930 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2024-11-23 02:00:31,945 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:00:31,945 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-23 02:00:31,945 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:00:31,993 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 02:00:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 41 transitions, 103 flow [2024-11-23 02:00:32,040 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-23 02:00:32,040 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 02:00:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 4/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-23 02:00:32,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 41 transitions, 103 flow [2024-11-23 02:00:32,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 87 flow [2024-11-23 02:00:32,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:00:32,061 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;@1d595bcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:00:32,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-23 02:00:32,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:00:32,064 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 02:00:32,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:00:32,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:32,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 02:00:32,066 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:32,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 414209, now seen corresponding path program 1 times [2024-11-23 02:00:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685075049] [2024-11-23 02:00:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685075049] [2024-11-23 02:00:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685075049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256905184] [2024-11-23 02:00:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:32,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:32,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:32,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:32,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:32,612 INFO L124 PetriNetUnfolderBase]: 431/766 cut-off events. [2024-11-23 02:00:32,612 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-23 02:00:32,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 766 events. 431/766 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3489 event pairs, 306 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 1298. Up to 625 conditions per place. [2024-11-23 02:00:32,619 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 25 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-23 02:00:32,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 151 flow [2024-11-23 02:00:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-23 02:00:32,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2024-11-23 02:00:32,630 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 87 flow. Second operand 4 states and 83 transitions. [2024-11-23 02:00:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 151 flow [2024-11-23 02:00:32,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 142 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:32,634 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 107 flow [2024-11-23 02:00:32,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-23 02:00:32,638 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-23 02:00:32,638 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 107 flow [2024-11-23 02:00:32,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:32,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 02:00:32,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:00:32,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:32,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -544808502, now seen corresponding path program 1 times [2024-11-23 02:00:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178639700] [2024-11-23 02:00:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178639700] [2024-11-23 02:00:32,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178639700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864021229] [2024-11-23 02:00:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:32,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:32,781 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) [2024-11-23 02:00:32,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 02:00:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:32,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:32,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:32,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864021229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 02:00:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070241501] [2024-11-23 02:00:32,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:32,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:00:32,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:32,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:32,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:32,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:32,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,094 INFO L124 PetriNetUnfolderBase]: 431/765 cut-off events. [2024-11-23 02:00:33,094 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-23 02:00:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 765 events. 431/765 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3477 event pairs, 306 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 1416. Up to 620 conditions per place. [2024-11-23 02:00:33,103 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 21 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2024-11-23 02:00:33,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 159 flow [2024-11-23 02:00:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-23 02:00:33,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-11-23 02:00:33,105 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 107 flow. Second operand 6 states and 107 transitions. [2024-11-23 02:00:33,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 159 flow [2024-11-23 02:00:33,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:33,106 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 114 flow [2024-11-23 02:00:33,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-11-23 02:00:33,107 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-11-23 02:00:33,108 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 114 flow [2024-11-23 02:00:33,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 02:00:33,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 02:00:33,309 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 [2024-11-23 02:00:33,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:33,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash -542129103, now seen corresponding path program 1 times [2024-11-23 02:00:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728075262] [2024-11-23 02:00:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728075262] [2024-11-23 02:00:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728075262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:33,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:33,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197959896] [2024-11-23 02:00:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:33,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:33,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:33,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:33,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:33,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,566 INFO L124 PetriNetUnfolderBase]: 865/1456 cut-off events. [2024-11-23 02:00:33,566 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-23 02:00:33,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 1456 events. 865/1456 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7136 event pairs, 466 based on Foata normal form. 42/1152 useless extension candidates. Maximal degree in co-relation 2746. Up to 947 conditions per place. [2024-11-23 02:00:33,574 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 54 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-23 02:00:33,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 294 flow [2024-11-23 02:00:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-23 02:00:33,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6646341463414634 [2024-11-23 02:00:33,580 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 114 flow. Second operand 4 states and 109 transitions. [2024-11-23 02:00:33,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 294 flow [2024-11-23 02:00:33,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 272 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:33,583 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 121 flow [2024-11-23 02:00:33,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-11-23 02:00:33,584 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-11-23 02:00:33,584 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 121 flow [2024-11-23 02:00:33,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 02:00:33,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 02:00:33,585 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:33,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash 290806018, now seen corresponding path program 1 times [2024-11-23 02:00:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:33,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973531643] [2024-11-23 02:00:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973531643] [2024-11-23 02:00:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973531643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255393166] [2024-11-23 02:00:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:33,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:33,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:33,664 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) [2024-11-23 02:00:33,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 02:00:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:33,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:33,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:33,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255393166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:33,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:00:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934717929] [2024-11-23 02:00:33,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:33,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:33,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:33,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 121 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:33,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:33,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:33,956 INFO L124 PetriNetUnfolderBase]: 672/1231 cut-off events. [2024-11-23 02:00:33,956 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-23 02:00:33,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 1231 events. 672/1231 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6642 event pairs, 466 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 2679. Up to 949 conditions per place. [2024-11-23 02:00:33,962 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 27 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2024-11-23 02:00:33,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 231 flow [2024-11-23 02:00:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-11-23 02:00:33,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-11-23 02:00:33,963 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 121 flow. Second operand 10 states and 170 transitions. [2024-11-23 02:00:33,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 231 flow [2024-11-23 02:00:33,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:33,965 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 192 flow [2024-11-23 02:00:33,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-23 02:00:33,966 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-11-23 02:00:33,966 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 192 flow [2024-11-23 02:00:33,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:33,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:33,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:33,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 02:00:34,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-23 02:00:34,171 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:34,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1308116497, now seen corresponding path program 1 times [2024-11-23 02:00:34,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:34,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358808335] [2024-11-23 02:00:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:34,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:34,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358808335] [2024-11-23 02:00:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358808335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:34,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:34,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585019587] [2024-11-23 02:00:34,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:34,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:34,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:34,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:34,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:34,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:34,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:34,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:34,397 INFO L124 PetriNetUnfolderBase]: 1384/2224 cut-off events. [2024-11-23 02:00:34,399 INFO L125 PetriNetUnfolderBase]: For 706/778 co-relation queries the response was YES. [2024-11-23 02:00:34,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 2224 events. 1384/2224 cut-off events. For 706/778 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11400 event pairs, 724 based on Foata normal form. 64/1871 useless extension candidates. Maximal degree in co-relation 4952. Up to 1472 conditions per place. [2024-11-23 02:00:34,413 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-23 02:00:34,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 444 flow [2024-11-23 02:00:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-23 02:00:34,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2024-11-23 02:00:34,414 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 192 flow. Second operand 4 states and 107 transitions. [2024-11-23 02:00:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 444 flow [2024-11-23 02:00:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 83 transitions, 433 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:34,419 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 210 flow [2024-11-23 02:00:34,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-23 02:00:34,421 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-11-23 02:00:34,421 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 210 flow [2024-11-23 02:00:34,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:34,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:34,422 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:34,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 02:00:34,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:34,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1490647680, now seen corresponding path program 1 times [2024-11-23 02:00:34,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:34,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180769386] [2024-11-23 02:00:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:34,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:34,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:34,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180769386] [2024-11-23 02:00:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180769386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188925440] [2024-11-23 02:00:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:34,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:34,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-11-23 02:00:34,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:34,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:34,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-11-23 02:00:34,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:34,742 INFO L124 PetriNetUnfolderBase]: 1522/2784 cut-off events. [2024-11-23 02:00:34,742 INFO L125 PetriNetUnfolderBase]: For 1573/1591 co-relation queries the response was YES. [2024-11-23 02:00:34,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6935 conditions, 2784 events. 1522/2784 cut-off events. For 1573/1591 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17293 event pairs, 928 based on Foata normal form. 62/2477 useless extension candidates. Maximal degree in co-relation 6897. Up to 1469 conditions per place. [2024-11-23 02:00:34,757 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 74 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2024-11-23 02:00:34,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 493 flow [2024-11-23 02:00:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-23 02:00:34,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6536585365853659 [2024-11-23 02:00:34,759 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 210 flow. Second operand 5 states and 134 transitions. [2024-11-23 02:00:34,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 493 flow [2024-11-23 02:00:34,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:00:34,764 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 236 flow [2024-11-23 02:00:34,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-23 02:00:34,765 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-23 02:00:34,765 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 236 flow [2024-11-23 02:00:34,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:34,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:34,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:34,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:00:34,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:34,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1316662909, now seen corresponding path program 1 times [2024-11-23 02:00:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339897420] [2024-11-23 02:00:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339897420] [2024-11-23 02:00:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339897420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873215703] [2024-11-23 02:00:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:34,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:34,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:34,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:34,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:34,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:34,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:35,040 INFO L124 PetriNetUnfolderBase]: 1838/3004 cut-off events. [2024-11-23 02:00:35,041 INFO L125 PetriNetUnfolderBase]: For 2895/2999 co-relation queries the response was YES. [2024-11-23 02:00:35,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 3004 events. 1838/3004 cut-off events. For 2895/2999 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16344 event pairs, 572 based on Foata normal form. 122/2673 useless extension candidates. Maximal degree in co-relation 8088. Up to 1139 conditions per place. [2024-11-23 02:00:35,058 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 74 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-23 02:00:35,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 580 flow [2024-11-23 02:00:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-23 02:00:35,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551219512195122 [2024-11-23 02:00:35,060 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 236 flow. Second operand 5 states and 113 transitions. [2024-11-23 02:00:35,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 580 flow [2024-11-23 02:00:35,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:35,064 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 247 flow [2024-11-23 02:00:35,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-11-23 02:00:35,064 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-11-23 02:00:35,065 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 247 flow [2024-11-23 02:00:35,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:35,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:35,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 02:00:35,066 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:35,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2133122337, now seen corresponding path program 1 times [2024-11-23 02:00:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014050190] [2024-11-23 02:00:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:35,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014050190] [2024-11-23 02:00:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014050190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:35,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:00:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511725236] [2024-11-23 02:00:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:35,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:35,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:35,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:35,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:35,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:35,361 INFO L124 PetriNetUnfolderBase]: 1740/2919 cut-off events. [2024-11-23 02:00:35,361 INFO L125 PetriNetUnfolderBase]: For 2953/3051 co-relation queries the response was YES. [2024-11-23 02:00:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 2919 events. 1740/2919 cut-off events. For 2953/3051 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16044 event pairs, 1160 based on Foata normal form. 43/2648 useless extension candidates. Maximal degree in co-relation 8278. Up to 1766 conditions per place. [2024-11-23 02:00:35,382 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 65 selfloop transitions, 5 changer transitions 6/85 dead transitions. [2024-11-23 02:00:35,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 521 flow [2024-11-23 02:00:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-23 02:00:35,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902439024390244 [2024-11-23 02:00:35,384 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 247 flow. Second operand 5 states and 121 transitions. [2024-11-23 02:00:35,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 521 flow [2024-11-23 02:00:35,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 495 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:35,390 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 254 flow [2024-11-23 02:00:35,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-11-23 02:00:35,392 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-11-23 02:00:35,392 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 254 flow [2024-11-23 02:00:35,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:35,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:35,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 02:00:35,393 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:35,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1859851735, now seen corresponding path program 1 times [2024-11-23 02:00:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734468489] [2024-11-23 02:00:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734468489] [2024-11-23 02:00:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734468489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:00:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987240053] [2024-11-23 02:00:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:35,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 02:00:35,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 02:00:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 02:00:35,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-11-23 02:00:35,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:35,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-11-23 02:00:35,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:35,663 INFO L124 PetriNetUnfolderBase]: 1244/2154 cut-off events. [2024-11-23 02:00:35,663 INFO L125 PetriNetUnfolderBase]: For 2036/2105 co-relation queries the response was YES. [2024-11-23 02:00:35,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5985 conditions, 2154 events. 1244/2154 cut-off events. For 2036/2105 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11612 event pairs, 824 based on Foata normal form. 34/2047 useless extension candidates. Maximal degree in co-relation 5943. Up to 1469 conditions per place. [2024-11-23 02:00:35,673 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 39 selfloop transitions, 2 changer transitions 27/78 dead transitions. [2024-11-23 02:00:35,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 467 flow [2024-11-23 02:00:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-23 02:00:35,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2024-11-23 02:00:35,675 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 254 flow. Second operand 5 states and 129 transitions. [2024-11-23 02:00:35,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 467 flow [2024-11-23 02:00:35,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:35,678 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 224 flow [2024-11-23 02:00:35,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-11-23 02:00:35,679 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-11-23 02:00:35,679 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 224 flow [2024-11-23 02:00:35,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:35,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:35,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 02:00:35,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:35,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 176446089, now seen corresponding path program 1 times [2024-11-23 02:00:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:35,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013285206] [2024-11-23 02:00:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013285206] [2024-11-23 02:00:35,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013285206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559294273] [2024-11-23 02:00:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:35,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:35,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:35,743 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) [2024-11-23 02:00:35,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 02:00:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:35,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:35,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:35,822 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559294273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 02:00:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724005432] [2024-11-23 02:00:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:35,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:35,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:00:35,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:35,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:35,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:36,067 INFO L124 PetriNetUnfolderBase]: 1215/1924 cut-off events. [2024-11-23 02:00:36,068 INFO L125 PetriNetUnfolderBase]: For 1643/1753 co-relation queries the response was YES. [2024-11-23 02:00:36,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 1924 events. 1215/1924 cut-off events. For 1643/1753 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9373 event pairs, 228 based on Foata normal form. 62/1783 useless extension candidates. Maximal degree in co-relation 5521. Up to 537 conditions per place. [2024-11-23 02:00:36,078 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 99 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2024-11-23 02:00:36,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 114 transitions, 676 flow [2024-11-23 02:00:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-23 02:00:36,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-23 02:00:36,079 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 224 flow. Second operand 6 states and 159 transitions. [2024-11-23 02:00:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 114 transitions, 676 flow [2024-11-23 02:00:36,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 114 transitions, 614 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-11-23 02:00:36,085 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 212 flow [2024-11-23 02:00:36,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-23 02:00:36,086 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-11-23 02:00:36,086 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 212 flow [2024-11-23 02:00:36,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:36,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:36,086 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:36,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 02:00:36,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:36,288 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:36,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1174861893, now seen corresponding path program 1 times [2024-11-23 02:00:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356148288] [2024-11-23 02:00:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356148288] [2024-11-23 02:00:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356148288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305870164] [2024-11-23 02:00:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:36,348 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) [2024-11-23 02:00:36,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 02:00:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:36,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:36,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:36,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305870164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:36,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:36,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 02:00:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043436162] [2024-11-23 02:00:36,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:36,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:36,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:36,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 212 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:36,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:36,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:36,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:36,898 INFO L124 PetriNetUnfolderBase]: 2337/3687 cut-off events. [2024-11-23 02:00:36,899 INFO L125 PetriNetUnfolderBase]: For 2786/2936 co-relation queries the response was YES. [2024-11-23 02:00:36,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 3687 events. 2337/3687 cut-off events. For 2786/2936 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18221 event pairs, 536 based on Foata normal form. 186/3321 useless extension candidates. Maximal degree in co-relation 10307. Up to 1439 conditions per place. [2024-11-23 02:00:36,914 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 166 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-11-23 02:00:36,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 187 transitions, 1032 flow [2024-11-23 02:00:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-11-23 02:00:36,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6682926829268293 [2024-11-23 02:00:36,915 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 212 flow. Second operand 10 states and 274 transitions. [2024-11-23 02:00:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 187 transitions, 1032 flow [2024-11-23 02:00:36,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 187 transitions, 986 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:36,921 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 264 flow [2024-11-23 02:00:36,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-23 02:00:36,921 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-11-23 02:00:36,922 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 264 flow [2024-11-23 02:00:36,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:36,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:36,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:36,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 02:00:37,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:37,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:37,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2078811736, now seen corresponding path program 1 times [2024-11-23 02:00:37,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:37,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613843355] [2024-11-23 02:00:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:37,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:37,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613843355] [2024-11-23 02:00:37,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613843355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:37,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187797755] [2024-11-23 02:00:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:37,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:37,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:37,198 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) [2024-11-23 02:00:37,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 02:00:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:37,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 02:00:37,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:37,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187797755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:37,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-23 02:00:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715564563] [2024-11-23 02:00:37,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:37,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 02:00:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 02:00:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-23 02:00:37,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-23 02:00:37,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 264 flow. Second operand has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:37,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:37,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-23 02:00:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:38,619 INFO L124 PetriNetUnfolderBase]: 8468/13279 cut-off events. [2024-11-23 02:00:38,619 INFO L125 PetriNetUnfolderBase]: For 14299/14778 co-relation queries the response was YES. [2024-11-23 02:00:38,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36863 conditions, 13279 events. 8468/13279 cut-off events. For 14299/14778 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 82530 event pairs, 4404 based on Foata normal form. 0/11659 useless extension candidates. Maximal degree in co-relation 36829. Up to 3698 conditions per place. [2024-11-23 02:00:38,741 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 207 selfloop transitions, 20 changer transitions 3/237 dead transitions. [2024-11-23 02:00:38,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 237 transitions, 1544 flow [2024-11-23 02:00:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 02:00:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 02:00:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 266 transitions. [2024-11-23 02:00:38,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49906191369606 [2024-11-23 02:00:38,743 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 264 flow. Second operand 13 states and 266 transitions. [2024-11-23 02:00:38,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 237 transitions, 1544 flow [2024-11-23 02:00:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 237 transitions, 1467 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:38,761 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 338 flow [2024-11-23 02:00:38,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=338, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-11-23 02:00:38,761 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-11-23 02:00:38,761 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 338 flow [2024-11-23 02:00:38,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:38,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:38,762 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:38,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 02:00:38,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 02:00:38,967 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:38,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1805541134, now seen corresponding path program 1 times [2024-11-23 02:00:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:38,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898679607] [2024-11-23 02:00:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:38,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:00:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898679607] [2024-11-23 02:00:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898679607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63176134] [2024-11-23 02:00:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:39,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:39,011 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) [2024-11-23 02:00:39,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 02:00:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:39,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:00:39,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:00:39,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63176134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:39,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:39,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 20 [2024-11-23 02:00:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161554079] [2024-11-23 02:00:39,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:39,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 02:00:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 02:00:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-23 02:00:39,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-23 02:00:39,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 338 flow. Second operand has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:39,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:39,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-23 02:00:39,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:40,826 INFO L124 PetriNetUnfolderBase]: 8503/12873 cut-off events. [2024-11-23 02:00:40,826 INFO L125 PetriNetUnfolderBase]: For 14663/15193 co-relation queries the response was YES. [2024-11-23 02:00:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39839 conditions, 12873 events. 8503/12873 cut-off events. For 14663/15193 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 76880 event pairs, 1464 based on Foata normal form. 298/11922 useless extension candidates. Maximal degree in co-relation 39796. Up to 2270 conditions per place. [2024-11-23 02:00:40,886 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 254 selfloop transitions, 23 changer transitions 25/308 dead transitions. [2024-11-23 02:00:40,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 308 transitions, 2065 flow [2024-11-23 02:00:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 02:00:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 02:00:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 319 transitions. [2024-11-23 02:00:40,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186991869918699 [2024-11-23 02:00:40,889 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 338 flow. Second operand 15 states and 319 transitions. [2024-11-23 02:00:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 308 transitions, 2065 flow [2024-11-23 02:00:41,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 308 transitions, 2056 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 02:00:41,013 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 393 flow [2024-11-23 02:00:41,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=393, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2024-11-23 02:00:41,014 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-11-23 02:00:41,014 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 393 flow [2024-11-23 02:00:41,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:41,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:41,015 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 02:00:41,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 02:00:41,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,216 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:41,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1246613739, now seen corresponding path program 2 times [2024-11-23 02:00:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861290915] [2024-11-23 02:00:41,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:41,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:41,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861290915] [2024-11-23 02:00:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861290915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078525391] [2024-11-23 02:00:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:41,254 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) [2024-11-23 02:00:41,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 02:00:41,297 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:41,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:41,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:00:41,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 02:00:41,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078525391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:41,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 02:00:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324856899] [2024-11-23 02:00:41,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:41,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:41,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:41,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:41,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:41,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:41,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:42,156 INFO L124 PetriNetUnfolderBase]: 7666/12463 cut-off events. [2024-11-23 02:00:42,156 INFO L125 PetriNetUnfolderBase]: For 19706/19800 co-relation queries the response was YES. [2024-11-23 02:00:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40831 conditions, 12463 events. 7666/12463 cut-off events. For 19706/19800 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 80677 event pairs, 5465 based on Foata normal form. 1/11574 useless extension candidates. Maximal degree in co-relation 40792. Up to 10471 conditions per place. [2024-11-23 02:00:42,228 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 48 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-11-23 02:00:42,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 70 transitions, 509 flow [2024-11-23 02:00:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-23 02:00:42,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-11-23 02:00:42,229 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 393 flow. Second operand 4 states and 77 transitions. [2024-11-23 02:00:42,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 70 transitions, 509 flow [2024-11-23 02:00:42,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 443 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-23 02:00:42,274 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 347 flow [2024-11-23 02:00:42,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-11-23 02:00:42,275 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-11-23 02:00:42,275 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 347 flow [2024-11-23 02:00:42,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:42,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:42,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:42,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 02:00:42,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:42,477 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:42,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 215263564, now seen corresponding path program 1 times [2024-11-23 02:00:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574993223] [2024-11-23 02:00:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574993223] [2024-11-23 02:00:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574993223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034166187] [2024-11-23 02:00:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:42,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:42,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:42,551 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) [2024-11-23 02:00:42,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 02:00:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:42,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:42,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:42,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:00:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034166187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:42,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:42,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 02:00:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910776794] [2024-11-23 02:00:42,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:42,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:42,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:42,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 347 flow. Second operand has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:42,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:42,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:42,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:44,025 INFO L124 PetriNetUnfolderBase]: 14419/21912 cut-off events. [2024-11-23 02:00:44,026 INFO L125 PetriNetUnfolderBase]: For 27331/28249 co-relation queries the response was YES. [2024-11-23 02:00:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65629 conditions, 21912 events. 14419/21912 cut-off events. For 27331/28249 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 136073 event pairs, 3838 based on Foata normal form. 894/20514 useless extension candidates. Maximal degree in co-relation 60023. Up to 8861 conditions per place. [2024-11-23 02:00:44,140 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 291 selfloop transitions, 18 changer transitions 0/315 dead transitions. [2024-11-23 02:00:44,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 315 transitions, 2128 flow [2024-11-23 02:00:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-11-23 02:00:44,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6487804878048781 [2024-11-23 02:00:44,141 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 347 flow. Second operand 10 states and 266 transitions. [2024-11-23 02:00:44,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 315 transitions, 2128 flow [2024-11-23 02:00:44,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 315 transitions, 2098 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:00:44,204 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 404 flow [2024-11-23 02:00:44,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-23 02:00:44,204 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-11-23 02:00:44,204 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 404 flow [2024-11-23 02:00:44,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:44,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:44,205 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:44,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 02:00:44,405 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,SelfDestructingSolverStorable14 [2024-11-23 02:00:44,405 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:44,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash 395542088, now seen corresponding path program 2 times [2024-11-23 02:00:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:44,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34378462] [2024-11-23 02:00:44,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:44,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:44,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 02:00:44,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34378462] [2024-11-23 02:00:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34378462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:44,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:44,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99610006] [2024-11-23 02:00:44,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:44,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:44,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:44,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:44,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:44,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:44,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:44,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:45,961 INFO L124 PetriNetUnfolderBase]: 13582/21148 cut-off events. [2024-11-23 02:00:45,961 INFO L125 PetriNetUnfolderBase]: For 34112/34166 co-relation queries the response was YES. [2024-11-23 02:00:46,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69460 conditions, 21148 events. 13582/21148 cut-off events. For 34112/34166 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 135983 event pairs, 6770 based on Foata normal form. 0/19813 useless extension candidates. Maximal degree in co-relation 64524. Up to 13766 conditions per place. [2024-11-23 02:00:46,121 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 103 selfloop transitions, 7 changer transitions 2/118 dead transitions. [2024-11-23 02:00:46,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 832 flow [2024-11-23 02:00:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-23 02:00:46,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-11-23 02:00:46,123 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 404 flow. Second operand 4 states and 88 transitions. [2024-11-23 02:00:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 832 flow [2024-11-23 02:00:46,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 800 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:46,216 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 393 flow [2024-11-23 02:00:46,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-11-23 02:00:46,217 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-11-23 02:00:46,217 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 393 flow [2024-11-23 02:00:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:46,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:46,217 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:46,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 02:00:46,218 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:46,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1199886810, now seen corresponding path program 2 times [2024-11-23 02:00:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801383664] [2024-11-23 02:00:46,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:46,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:46,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 02:00:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801383664] [2024-11-23 02:00:46,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801383664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114195155] [2024-11-23 02:00:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:46,254 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) [2024-11-23 02:00:46,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 02:00:46,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:46,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:46,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:00:46,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 02:00:46,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 02:00:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114195155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:46,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 02:00:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616745765] [2024-11-23 02:00:46,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:46,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:00:46,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:00:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:00:46,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:46,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:46,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:46,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:46,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:47,776 INFO L124 PetriNetUnfolderBase]: 13556/21201 cut-off events. [2024-11-23 02:00:47,778 INFO L125 PetriNetUnfolderBase]: For 39270/39270 co-relation queries the response was YES. [2024-11-23 02:00:47,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68796 conditions, 21201 events. 13556/21201 cut-off events. For 39270/39270 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 135782 event pairs, 5378 based on Foata normal form. 368/20894 useless extension candidates. Maximal degree in co-relation 63061. Up to 11405 conditions per place. [2024-11-23 02:00:47,892 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 69 selfloop transitions, 11 changer transitions 29/114 dead transitions. [2024-11-23 02:00:47,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 114 transitions, 798 flow [2024-11-23 02:00:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-23 02:00:47,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2024-11-23 02:00:47,894 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 393 flow. Second operand 4 states and 89 transitions. [2024-11-23 02:00:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 114 transitions, 798 flow [2024-11-23 02:00:48,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 762 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-23 02:00:48,015 INFO L231 Difference]: Finished difference. Result has 83 places, 61 transitions, 307 flow [2024-11-23 02:00:48,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=83, PETRI_TRANSITIONS=61} [2024-11-23 02:00:48,015 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-11-23 02:00:48,015 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 61 transitions, 307 flow [2024-11-23 02:00:48,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:48,016 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:48,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:48,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 02:00:48,216 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-23 02:00:48,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 556888454, now seen corresponding path program 2 times [2024-11-23 02:00:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122201089] [2024-11-23 02:00:48,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:48,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:48,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:48,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:00:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122201089] [2024-11-23 02:00:48,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122201089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462864005] [2024-11-23 02:00:48,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:00:48,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:48,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:48,264 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) [2024-11-23 02:00:48,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 02:00:48,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:00:48,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:00:48,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:48,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:00:48,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 02:00:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462864005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:48,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 4 [2024-11-23 02:00:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428326940] [2024-11-23 02:00:48,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:48,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:00:48,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-23 02:00:48,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 61 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:48,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:48,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-23 02:00:48,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:49,385 INFO L124 PetriNetUnfolderBase]: 9275/14690 cut-off events. [2024-11-23 02:00:49,385 INFO L125 PetriNetUnfolderBase]: For 27152/27152 co-relation queries the response was YES. [2024-11-23 02:00:49,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46832 conditions, 14690 events. 9275/14690 cut-off events. For 27152/27152 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 92512 event pairs, 3600 based on Foata normal form. 298/14434 useless extension candidates. Maximal degree in co-relation 44616. Up to 6927 conditions per place. [2024-11-23 02:00:49,432 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2024-11-23 02:00:49,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 608 flow [2024-11-23 02:00:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:00:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 02:00:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-11-23 02:00:49,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-11-23 02:00:49,433 INFO L175 Difference]: Start difference. First operand has 83 places, 61 transitions, 307 flow. Second operand 5 states and 100 transitions. [2024-11-23 02:00:49,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 608 flow [2024-11-23 02:00:49,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 544 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-23 02:00:49,490 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2024-11-23 02:00:49,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2024-11-23 02:00:49,490 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-11-23 02:00:49,490 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2024-11-23 02:00:49,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:49,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2024-11-23 02:00:49,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-23 02:00:49,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-23 02:00:49,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-23 02:00:49,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 02:00:49,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 02:00:49,699 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:49,705 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-23 02:00:49,705 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 02:00:49,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:00:49 BasicIcfg [2024-11-23 02:00:49,709 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 02:00:49,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:00:49,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:00:49,710 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:00:49,710 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:00:31" (3/4) ... [2024-11-23 02:00:49,712 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-23 02:00:49,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-23 02:00:49,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-23 02:00:49,714 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-23 02:00:49,720 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-23 02:00:49,721 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-23 02:00:49,721 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-23 02:00:49,721 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-23 02:00:49,790 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-23 02:00:49,791 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-23 02:00:49,791 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:00:49,792 INFO L158 Benchmark]: Toolchain (without parser) took 18825.62ms. Allocated memory was 142.6MB in the beginning and 7.4GB in the end (delta: 7.3GB). Free memory was 72.1MB in the beginning and 6.4GB in the end (delta: -6.3GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-23 02:00:49,792 INFO L158 Benchmark]: CDTParser took 1.42ms. Allocated memory is still 142.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:00:49,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.36ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 72.0MB in the beginning and 181.3MB in the end (delta: -109.4MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-11-23 02:00:49,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.19ms. Allocated memory is still 209.7MB. Free memory was 181.3MB in the beginning and 179.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:00:49,792 INFO L158 Benchmark]: Boogie Preprocessor took 46.47ms. Allocated memory is still 209.7MB. Free memory was 179.2MB in the beginning and 176.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:00:49,793 INFO L158 Benchmark]: RCFGBuilder took 532.93ms. Allocated memory is still 209.7MB. Free memory was 176.9MB in the beginning and 139.4MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-23 02:00:49,793 INFO L158 Benchmark]: TraceAbstraction took 17786.58ms. Allocated memory was 209.7MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 138.4MB in the beginning and 6.4GB in the end (delta: -6.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-23 02:00:49,793 INFO L158 Benchmark]: Witness Printer took 81.35ms. Allocated memory is still 7.4GB. Free memory was 6.4GB in the beginning and 6.4GB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-23 02:00:49,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42ms. Allocated memory is still 142.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.36ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 72.0MB in the beginning and 181.3MB in the end (delta: -109.4MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.19ms. Allocated memory is still 209.7MB. Free memory was 181.3MB in the beginning and 179.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.47ms. Allocated memory is still 209.7MB. Free memory was 179.2MB in the beginning and 176.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.93ms. Allocated memory is still 209.7MB. Free memory was 176.9MB in the beginning and 139.4MB in the end (delta: 37.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17786.58ms. Allocated memory was 209.7MB in the beginning and 7.4GB in the end (delta: 7.2GB). Free memory was 138.4MB in the beginning and 6.4GB in the end (delta: -6.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 81.35ms. Allocated memory is still 7.4GB. Free memory was 6.4GB in the beginning and 6.4GB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.7s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1281 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1221 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 627 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4263 IncrementalHoareTripleChecker+Invalid, 4299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 56 mSDtfsCounter, 4263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 218 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=15, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 376 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 1491 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1021 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 36 InterpolantComputations, 10 PerfectInterpolantSequences, 261/371 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-23 02:00:49,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE